Relations between geological characteristics and satellite‐derived infrared and microwave emissivities over deserts in northern Africa and the Arabian Peninsula
Identifieur interne : 000290 ( Istex/Corpus ); précédent : 000289; suivant : 000291Relations between geological characteristics and satellite‐derived infrared and microwave emissivities over deserts in northern Africa and the Arabian Peninsula
Auteurs : Carlos Jiménez ; Julie Catherinot ; Catherine Prigent ; Jack RogerSource :
- Journal of Geophysical Research: Atmospheres [ 0148-0227 ] ; 2010-10-27.
English descriptors
- KwdEn :
- Arabian, Arabian peninsula, Argillaceous, Argillaceous rocks, Arid, Arid regions, Aster, Carbonate, Carbonate minerals, Carbonate outcrops, Carbonate rocks, Chemical composition, Common land model, Different outcrops, Emissivities, Emissivity, Emissivity data sets, Emissivity values, Evaporite, Evaporite rocks, Geological information, Geological maps, Geological structures, Geophys, Histogram, Igneous, Igneous rocks, Indurated siliceous rocks, Infrared emissivities, Laboratory measurements, Land surface emissivity, Large scales, Lithology, Lithology information, Lithology types, Lithostratigraphic columns, Loose siliceous rocks, Metamorphic, Microwave, Microwave emissivities, More details, Northeast africa, Northern africa, Null hypothesis, Other surface parameters, Outcrop, Outcrop type, Permittivity, Pixel, Polarization difference, Precambrian, Precambrian shield, Prigent, Remote sens, Rock type, Sand dunes, Satellite observations, Sedimentary rocks, Seemann, Siliceous, Siliceous argillaceous, Siliceous rocks, Spatial resolution, Spatial variability, Standard deviation, Surface properties, Variability, Variance.
- Teeft :
- Arabian, Arabian peninsula, Argillaceous, Argillaceous rocks, Arid, Arid regions, Aster, Carbonate, Carbonate minerals, Carbonate outcrops, Carbonate rocks, Chemical composition, Common land model, Different outcrops, Emissivities, Emissivity, Emissivity data sets, Emissivity values, Evaporite, Evaporite rocks, Geological information, Geological maps, Geological structures, Geophys, Histogram, Igneous, Igneous rocks, Indurated siliceous rocks, Infrared emissivities, Laboratory measurements, Land surface emissivity, Large scales, Lithology, Lithology information, Lithology types, Lithostratigraphic columns, Loose siliceous rocks, Metamorphic, Microwave, Microwave emissivities, More details, Northeast africa, Northern africa, Null hypothesis, Other surface parameters, Outcrop, Outcrop type, Permittivity, Pixel, Polarization difference, Precambrian, Precambrian shield, Prigent, Remote sens, Rock type, Sand dunes, Satellite observations, Sedimentary rocks, Seemann, Siliceous, Siliceous argillaceous, Siliceous rocks, Spatial resolution, Spatial variability, Standard deviation, Surface properties, Variability, Variance.
Abstract
Infrared and microwave emissivities have been previously calculated over the globe from satellite observations to estimate the longwave radiative budget of the planet in global circulation models (GCM) or to facilitate the assimilation of surface‐sensitive satellite observations over land in numerical weather prediction (NWP) models. This study examines the relationship between these emissivities and the soil lithology over the deserts in northern Africa and the Arabian Peninsula at large scales. For this purpose, a lithology map of the area has been carefully derived from combining several geological maps and in situ lithostratigraphic columns. Infrared and microwave emissivities show large spatial variability, much more than often assumed in GCM or in NWP models, that relate well to the surface properties, especially the lithology. Changes in the lithology explain ∼40% and up to 50% of the emissivities variability at the considered frequencies in the infrared and in the microwaves. In particular, siliceous and carbonate outcrops have specific signatures that can be identify in these wavelength ranges, with a surprisingly good sensitivity of the microwaves to the presence of carbonates. This study clearly indicates that geological information is necessary for emissivity modeling, not only in the infrared but also in the microwaves, for GCM and NWP applications. The lithology maps created from the geological maps for this study is available under request. Our study also suggests that the combination of infrared and microwave emissivities has some potential for lithology mapping at large scales, especially for land surface models.
Url:
DOI: 10.1029/2010JD013959
Links to Exploration step
ISTEX:C0FEF55D04F16E702E7A867B03966A6DA60E47FFLe document en format XML
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dunes</term><term>Satellite observations</term><term>Sedimentary rocks</term><term>Seemann</term><term>Siliceous</term><term>Siliceous argillaceous</term><term>Siliceous rocks</term><term>Spatial resolution</term><term>Spatial variability</term><term>Standard deviation</term><term>Surface properties</term><term>Variability</term><term>Variance</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Arabian</term><term>Arabian peninsula</term><term>Argillaceous</term><term>Argillaceous rocks</term><term>Arid</term><term>Arid regions</term><term>Aster</term><term>Carbonate</term><term>Carbonate minerals</term><term>Carbonate outcrops</term><term>Carbonate rocks</term><term>Chemical composition</term><term>Common land model</term><term>Different outcrops</term><term>Emissivities</term><term>Emissivity</term><term>Emissivity data sets</term><term>Emissivity values</term><term>Evaporite</term><term>Evaporite rocks</term><term>Geological information</term><term>Geological maps</term><term>Geological structures</term><term>Geophys</term><term>Histogram</term><term>Igneous</term><term>Igneous rocks</term><term>Indurated siliceous rocks</term><term>Infrared emissivities</term><term>Laboratory measurements</term><term>Land surface emissivity</term><term>Large scales</term><term>Lithology</term><term>Lithology information</term><term>Lithology types</term><term>Lithostratigraphic columns</term><term>Loose siliceous rocks</term><term>Metamorphic</term><term>Microwave</term><term>Microwave emissivities</term><term>More details</term><term>Northeast africa</term><term>Northern africa</term><term>Null hypothesis</term><term>Other surface parameters</term><term>Outcrop</term><term>Outcrop type</term><term>Permittivity</term><term>Pixel</term><term>Polarization difference</term><term>Precambrian</term><term>Precambrian shield</term><term>Prigent</term><term>Remote sens</term><term>Rock type</term><term>Sand dunes</term><term>Satellite observations</term><term>Sedimentary rocks</term><term>Seemann</term><term>Siliceous</term><term>Siliceous argillaceous</term><term>Siliceous rocks</term><term>Spatial resolution</term><term>Spatial variability</term><term>Standard deviation</term><term>Surface properties</term><term>Variability</term><term>Variance</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract">Infrared and microwave emissivities have been previously calculated over the globe from satellite observations to estimate the longwave radiative budget of the planet in global circulation models (GCM) or to facilitate the assimilation of surface‐sensitive satellite observations over land in numerical weather prediction (NWP) models. This study examines the relationship between these emissivities and the soil lithology over the deserts in northern Africa and the Arabian Peninsula at large scales. For this purpose, a lithology map of the area has been carefully derived from combining several geological maps and in situ lithostratigraphic columns. Infrared and microwave emissivities show large spatial variability, much more than often assumed in GCM or in NWP models, that relate well to the surface properties, especially the lithology. Changes in the lithology explain ∼40% and up to 50% of the emissivities variability at the considered frequencies in the infrared and in the microwaves. In particular, siliceous and carbonate outcrops have specific signatures that can be identify in these wavelength ranges, with a surprisingly good sensitivity of the microwaves to the presence of carbonates. This study clearly indicates that geological information is necessary for emissivity modeling, not only in the infrared but also in the microwaves, for GCM and NWP applications. The lithology maps created from the geological maps for this study is available under request. Our study also suggests that the combination of infrared and microwave emissivities has some potential for lithology mapping at large scales, especially for land surface models.</div></front></TEI><istex><corpusName>wiley</corpusName><keywords><teeft><json:string>emissivities</json:string><json:string>emissivity</json:string><json:string>lithology</json:string><json:string>siliceous</json:string><json:string>outcrop</json:string><json:string>carbonate</json:string><json:string>prigent</json:string><json:string>carbonate rocks</json:string><json:string>microwave emissivities</json:string><json:string>pixel</json:string><json:string>outcrop type</json:string><json:string>arabian peninsula</json:string><json:string>microwave</json:string><json:string>satellite observations</json:string><json:string>land surface emissivity</json:string><json:string>evaporite</json:string><json:string>geophys</json:string><json:string>arid regions</json:string><json:string>argillaceous</json:string><json:string>northern africa</json:string><json:string>large scales</json:string><json:string>aster</json:string><json:string>precambrian</json:string><json:string>seemann</json:string><json:string>siliceous rocks</json:string><json:string>loose siliceous rocks</json:string><json:string>igneous rocks</json:string><json:string>histogram</json:string><json:string>evaporite rocks</json:string><json:string>permittivity</json:string><json:string>geological maps</json:string><json:string>different outcrops</json:string><json:string>indurated siliceous rocks</json:string><json:string>infrared emissivities</json:string><json:string>standard deviation</json:string><json:string>spatial resolution</json:string><json:string>precambrian shield</json:string><json:string>variance</json:string><json:string>arid</json:string><json:string>more details</json:string><json:string>siliceous argillaceous</json:string><json:string>remote sens</json:string><json:string>laboratory measurements</json:string><json:string>lithostratigraphic columns</json:string><json:string>geological structures</json:string><json:string>emissivity values</json:string><json:string>carbonate outcrops</json:string><json:string>sand dunes</json:string><json:string>metamorphic</json:string><json:string>igneous</json:string><json:string>arabian</json:string><json:string>carbonate minerals</json:string><json:string>chemical composition</json:string><json:string>lithology information</json:string><json:string>surface properties</json:string><json:string>argillaceous rocks</json:string><json:string>spatial variability</json:string><json:string>sedimentary rocks</json:string><json:string>geological information</json:string><json:string>emissivity data sets</json:string><json:string>lithology types</json:string><json:string>other surface parameters</json:string><json:string>polarization difference</json:string><json:string>common land model</json:string><json:string>null hypothesis</json:string><json:string>rock type</json:string><json:string>northeast africa</json:string><json:string>variability</json:string></teeft></keywords><author><json:item><name>Carlos Jiménez</name><affiliations><json:string>Laboratoire d'Etudes du Rayonnement et de la Matière en Astrophysique, CNRS, Observatoire de Paris, Paris, France</json:string><json:string>E-mail: carlos.jimenez@obspm.fr</json:string></affiliations></json:item><json:item><name>Julie Catherinot</name><affiliations><json:string>Laboratoire d'Etudes du Rayonnement et de la Matière en Astrophysique, CNRS, Observatoire de Paris, Paris, France</json:string></affiliations></json:item><json:item><name>Catherine Prigent</name><affiliations><json:string>Laboratoire d'Etudes du Rayonnement et de la Matière en Astrophysique, CNRS, Observatoire de Paris, Paris, France</json:string></affiliations></json:item><json:item><name>Jack Roger</name><affiliations><json:string>Bureau des Ressources Géologiques et Minières, Orléans, France</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>land surface emissivity</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>arid regions</value></json:item></subject><articleId><json:string>2010JD013959</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>Infrared and microwave emissivities have been previously calculated over the globe from satellite observations to estimate the longwave radiative budget of the planet in global circulation models (GCM) or to facilitate the assimilation of surface‐sensitive satellite observations over land in numerical weather prediction (NWP) models. This study examines the relationship between these emissivities and the soil lithology over the deserts in northern Africa and the Arabian Peninsula at large scales. For this purpose, a lithology map of the area has been carefully derived from combining several geological maps and in situ lithostratigraphic columns. Infrared and microwave emissivities show large spatial variability, much more than often assumed in GCM or in NWP models, that relate well to the surface properties, especially the lithology. Changes in the lithology explain ∼40% and up to 50% of the emissivities variability at the considered frequencies in the infrared and in the microwaves. In particular, siliceous and carbonate outcrops have specific signatures that can be identify in these wavelength ranges, with a surprisingly good sensitivity of the microwaves to the presence of carbonates. This study clearly indicates that geological information is necessary for emissivity modeling, not only in the infrared but also in the microwaves, for GCM and NWP applications. The lithology maps created from the geological maps for this study is available under request. Our study also suggests that the combination of infrared and microwave emissivities has some potential for lithology mapping at large scales, especially for land surface models.</abstract><qualityIndicators><score>9.44</score><pdfVersion>1.6</pdfVersion><pdfPageSize>612 x 792 pts (letter)</pdfPageSize><refBibsNative>true</refBibsNative><abstractCharCount>1657</abstractCharCount><pdfWordCount>6366</pdfWordCount><pdfCharCount>39997</pdfCharCount><pdfPageCount>11</pdfPageCount><abstractWordCount>245</abstractWordCount></qualityIndicators><title>Relations between geological characteristics and satellite‐derived infrared and microwave emissivities over deserts in northern Africa and the Arabian Peninsula</title><genre><json:string>article</json:string></genre><host><title>Journal of Geophysical Research: Atmospheres</title><language><json:string>unknown</json:string></language><doi><json:string>10.1002/(ISSN)2156-2202d</json:string></doi><issn><json:string>0148-0227</json:string></issn><eissn><json:string>2156-2202</json:string></eissn><publisherId><json:string>JGRD</json:string></publisherId><volume>115</volume><issue>D20</issue><pages><first>n/a</first><last>n/a</last><total>11</total></pages><genre><json:string>journal</json:string></genre><subject><json:item><value>Composition and Chemistry</value></json:item><json:item><value>GEODESY AND GRAVITY</value></json:item><json:item><value>Mass balance</value></json:item><json:item><value>Global change from geodesy</value></json:item><json:item><value>GLOBAL CHANGE</value></json:item><json:item><value>Earth system modeling</value></json:item><json:item><value>Land/atmosphere interactions</value></json:item><json:item><value>HYDROLOGY</value></json:item><json:item><value>Land/atmosphere interactions</value></json:item><json:item><value>ATMOSPHERIC PROCESSES</value></json:item><json:item><value>Land/atmosphere interactions</value></json:item><json:item><value>NATURAL HAZARDS</value></json:item><json:item><value>Atmospheric</value></json:item><json:item><value>Physical modeling</value></json:item><json:item><value>Composition and Chemistry</value></json:item></subject></host><categories><wos><json:string>science</json:string><json:string>geosciences, multidisciplinary</json:string></wos><scienceMetrix><json:string>natural sciences</json:string><json:string>earth & environmental sciences</json:string><json:string>meteorology & atmospheric 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type="first">Carlos</forename><surname>Jiménez</surname></persName><email>carlos.jimenez@obspm.fr</email><affiliation><orgName>Laboratoire d'Etudes du Rayonnement et de la Matière en Astrophysique</orgName><orgName>CNRS, Observatoire de Paris</orgName><address><settlement type="city">Paris</settlement><country key="FR">France</country></address></affiliation></author><author xml:id="author-0001"><persName><forename type="first">Julie</forename><surname>Catherinot</surname></persName><affiliation><orgName>Laboratoire d'Etudes du Rayonnement et de la Matière en Astrophysique</orgName><orgName>CNRS, Observatoire de Paris</orgName><address><settlement type="city">Paris</settlement><country key="FR">France</country></address></affiliation></author><author xml:id="author-0002"><persName><forename type="first">Catherine</forename><surname>Prigent</surname></persName><affiliation><orgName>Laboratoire d'Etudes du Rayonnement et de la Matière en Astrophysique</orgName><orgName>CNRS, Observatoire de Paris</orgName><address><settlement type="city">Paris</settlement><country key="FR">France</country></address></affiliation></author><author xml:id="author-0003"><persName><forename type="first">Jack</forename><surname>Roger</surname></persName><affiliation><orgName>Bureau des Ressources Géologiques et Minières</orgName><address><settlement type="city">Orléans</settlement><country key="FR">France</country></address></affiliation></author><idno type="istex">C0FEF55D04F16E702E7A867B03966A6DA60E47FF</idno><idno type="DOI">10.1029/2010JD013959</idno><idno type="editorialOffice">2010JD013959</idno><idno type="society">D20311</idno><idno type="unit">JGRD16418</idno><idno type="toTypesetVersion">file:JGRD.JGRD16418.pdf</idno></analytic><monogr><title level="j" type="main">Journal of Geophysical Research: Atmospheres</title><title level="j" type="alt">JOURNAL OF GEOPHYSICAL RESEARCH: ATMOSPHERES</title><idno type="pISSN">0148-0227</idno><idno type="eISSN">2156-2202</idno><idno type="book-DOI">10.1002/(ISSN)2156-2202d</idno><idno type="book-part-DOI">10.1002/jgrd.v115.D20</idno><idno type="product">JGRD</idno><idno type="coden">JGREA2</idno><imprint><biblScope unit="vol">115</biblScope><biblScope unit="issue">D20</biblScope><biblScope unit="page-count">11</biblScope><date type="published" when="2010-10-27"></date></imprint></monogr></biblStruct></sourceDesc></fileDesc><profileDesc><abstract style="main"><p xml:id="jgrd16418-para-0001">Infrared and microwave emissivities have been previously calculated over the globe from satellite observations to estimate the longwave radiative budget of the planet in global circulation models (GCM) or to facilitate the assimilation of surface‐sensitive satellite observations over land in numerical weather prediction (NWP) models. This study examines the relationship between these emissivities and the soil lithology over the deserts in northern Africa and the Arabian Peninsula at large scales. For this purpose, a lithology map of the area has been carefully derived from combining several geological maps and in situ lithostratigraphic columns. Infrared and microwave emissivities show large spatial variability, much more than often assumed in GCM or in NWP models, that relate well to the surface properties, especially the lithology. Changes in the lithology explain ∼40% and up to 50% of the emissivities variability at the considered frequencies in the infrared and in the microwaves. In particular, siliceous and carbonate outcrops have specific signatures that can be identify in these wavelength ranges, with a surprisingly good sensitivity of the microwaves to the presence of carbonates. This study clearly indicates that geological information is necessary for emissivity modeling, not only in the infrared but also in the microwaves, for GCM and NWP applications. The lithology maps created from the geological maps for this study is available under request. Our study also suggests that the combination of infrared and microwave emissivities has some potential for lithology mapping at large scales, especially for land surface models.</p></abstract><textClass><keywords><term xml:id="jgrd16418-kwd-0001">land surface emissivity</term><term xml:id="jgrd16418-kwd-0002">arid regions</term></keywords><classCode scheme="http://psi.agu.org/subset/ACH">Composition and Chemistry</classCode><classCode scheme="http://psi.agu.org/taxonomy5/1200">GEODESY AND GRAVITY</classCode><classCode scheme="http://psi.agu.org/taxonomy5/1600">GLOBAL CHANGE</classCode><classCode scheme="http://psi.agu.org/taxonomy5/1800">HYDROLOGY</classCode><classCode scheme="http://psi.agu.org/taxonomy5/3300">ATMOSPHERIC PROCESSES</classCode><classCode scheme="http://psi.agu.org/taxonomy5/4300">NATURAL HAZARDS</classCode><classCode scheme="articleCategory">Composition and Chemistry</classCode><classCode scheme="tocHeading1">Composition and Chemistry</classCode></textClass><langUsage><language ident="EN"></language></langUsage></profileDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/C0FEF55D04F16E702E7A867B03966A6DA60E47FF/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component type="serialArticle" version="2.0" xml:lang="en" xml:id="jgrd16418"><header><publicationMeta level="product"><doi>10.1002/(ISSN)2156-2202d</doi><issn type="print">0148-0227</issn><issn type="electronic">2156-2202</issn><idGroup><id type="product" value="JGRD"></id><id type="coden" value="JGREA2"></id></idGroup><titleGroup><title type="main" xml:lang="en" sort="JOURNAL OF GEOPHYSICAL RESEARCH: ATMOSPHERES">Journal of Geophysical Research: Atmospheres</title><title type="short">J. Geophys. Res.</title></titleGroup></publicationMeta><publicationMeta level="part" position="200"><doi>10.1002/jgrd.v115.D20</doi><idGroup><id type="focusSection" value="4"></id></idGroup><titleGroup><title type="focusSection" xml:lang="en">Journal of Geophysical Research: Atmospheres</title></titleGroup><numberingGroup><numbering type="journalVolume" number="115">115</numbering><numbering type="journalIssue">D20</numbering></numberingGroup><coverDate startDate="2010-10-27">27 October 2010</coverDate></publicationMeta><publicationMeta level="unit" position="340" type="article" status="forIssue"><doi>10.1029/2010JD013959</doi><idGroup><id type="editorialOffice" value="2010JD013959"></id><id type="society" value="D20311"></id><id type="unit" value="JGRD16418"></id></idGroup><countGroup><count type="pageTotal" number="11"></count></countGroup><titleGroup><title type="articleCategory">Composition and Chemistry</title><title type="tocHeading1">Composition and Chemistry</title></titleGroup><copyright ownership="thirdParty">Copyright 2010 by the American Geophysical Union.</copyright><eventGroup><event type="manuscriptReceived" date="2010-01-27"></event><event type="manuscriptRevised" date="2010-05-04"></event><event type="manuscriptAccepted" date="2010-07-12"></event><event type="firstOnline" date="2010-10-30"></event><event type="publishedOnlineFinalForm" date="2010-10-30"></event><event type="xmlConverted" agent="SPi Global Converter:AGUv3.44_TO_WileyML3Gv1.0.3 version:1.2; WileyML 3G Packaging Tool v1.0; AGU2WileyML3G Final Clean Up v1.0" date="2012-12-18"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.8.8" date="2014-01-30"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-10-30"></event></eventGroup><numberingGroup><numbering type="pageFirst">n/a</numbering><numbering type="pageLast">n/a</numbering></numberingGroup><subjectInfo><subject href="http://psi.agu.org/subset/ACH">Composition and Chemistry</subject><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/1200">GEODESY AND GRAVITY</subject><subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/1218">Mass balance</subject><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/1225">Global change from geodesy</subject></subjectInfo><subject href="http://psi.agu.org/taxonomy5/1600">GLOBAL CHANGE</subject><subjectInfo><subject href="http://psi.agu.org/taxonomy5/1622">Earth system modeling</subject><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/1631">Land/atmosphere interactions</subject></subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/1800">HYDROLOGY</subject><subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/1843">Land/atmosphere interactions</subject></subjectInfo><subject href="http://psi.agu.org/taxonomy5/3300">ATMOSPHERIC PROCESSES</subject><subjectInfo><subject href="http://psi.agu.org/taxonomy5/3322">Land/atmosphere interactions</subject></subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/4300">NATURAL HAZARDS</subject><subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/4301">Atmospheric</subject><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/4316">Physical modeling</subject></subjectInfo></subjectInfo><selfCitationGroup><citation xml:id="jgrd16418-cit-0000" type="self"><author><familyName>Jiménez</familyName>, <givenNames>C.</givenNames></author>, <author><givenNames>J.</givenNames> <familyName>Catherinot</familyName></author>, <author><givenNames>C.</givenNames> <familyName>Prigent</familyName></author>, and <author><givenNames>J.</givenNames> <familyName>Roger</familyName></author> (<pubYear year="2010">2010</pubYear>), <articleTitle>Relations between geological characteristics and satellite‐derived infrared and microwave emissivities over deserts in northern Africa and the Arabian Peninsula</articleTitle>, <journalTitle>J. Geophys. Res.</journalTitle>, <vol>115</vol>, D20311, doi:<accessionId ref="info:doi/10.1029/2010JD013959">10.1029/2010JD013959</accessionId>.</citation></selfCitationGroup><linkGroup><link type="toTypesetVersion" href="file:JGRD.JGRD16418.pdf"></link></linkGroup></publicationMeta><contentMeta><countGroup><count type="wordTotal" number="2500"></count><count type="figureTotal" number="7"></count><count type="tableTotal" number="3"></count></countGroup><titleGroup><title type="main">Relations between geological characteristics and satellite‐derived infrared and microwave emissivities over deserts in northern Africa and the Arabian Peninsula</title><title type="short">LAND SURFACE EMISSIVITY IN ARID REGIONS</title><title type="shortAuthors">Jiménez <i>et al</i>.</title></titleGroup><creators><creator creatorRole="author" xml:id="jgrd16418-cr-0001" affiliationRef="#jgrd16418-aff-0001"><personName><givenNames>Carlos</givenNames> <familyName>Jiménez</familyName></personName><contactDetails><email normalForm="carlos.jimenez@obspm.fr">carlos.jimenez@obspm.fr</email></contactDetails></creator><creator creatorRole="author" xml:id="jgrd16418-cr-0002" affiliationRef="#jgrd16418-aff-0001"><personName><givenNames>Julie</givenNames> <familyName>Catherinot</familyName></personName></creator><creator creatorRole="author" xml:id="jgrd16418-cr-0003" affiliationRef="#jgrd16418-aff-0001"><personName><givenNames>Catherine</givenNames> <familyName>Prigent</familyName></personName></creator><creator creatorRole="author" xml:id="jgrd16418-cr-0004" affiliationRef="#jgrd16418-aff-0002"><personName><givenNames>Jack</givenNames> <familyName>Roger</familyName></personName></creator></creators><affiliationGroup><affiliation countryCode="FR" type="organization" xml:id="jgrd16418-aff-0001"><orgDiv>Laboratoire d'Etudes du Rayonnement et de la Matière en Astrophysique</orgDiv><orgName>CNRS, Observatoire de Paris</orgName><address><city>Paris</city><country>France</country></address></affiliation><affiliation countryCode="FR" type="organization" xml:id="jgrd16418-aff-0002"><orgName>Bureau des Ressources Géologiques et Minières</orgName><address><city>Orléans</city><country>France</country></address></affiliation></affiliationGroup><keywordGroup type="author"><keyword xml:id="jgrd16418-kwd-0001">land surface emissivity</keyword><keyword xml:id="jgrd16418-kwd-0002">arid regions</keyword></keywordGroup><supportingInformation><supportingInfoItem><mediaResource alt="supplementary data" mimeType="text/plain" href="urn-x:wiley:01480227:media:jgrd16418:jgrd16418-sup-0001-t01"></mediaResource><caption>Tab‐delimited Table 1.</caption></supportingInfoItem><supportingInfoItem><mediaResource alt="supplementary data" mimeType="text/plain" href="urn-x:wiley:01480227:media:jgrd16418:jgrd16418-sup-0002-t02"></mediaResource><caption>Tab‐delimited Table 2.</caption></supportingInfoItem><supportingInfoItem><mediaResource alt="supplementary data" mimeType="text/plain" href="urn-x:wiley:01480227:media:jgrd16418:jgrd16418-sup-0003-t03"></mediaResource><caption>Tab‐delimited Table 3.</caption></supportingInfoItem></supportingInformation><abstractGroup><abstract type="main"><p xml:id="jgrd16418-para-0001" label="1">Infrared and microwave emissivities have been previously calculated over the globe from satellite observations to estimate the longwave radiative budget of the planet in global circulation models (GCM) or to facilitate the assimilation of surface‐sensitive satellite observations over land in numerical weather prediction (NWP) models. This study examines the relationship between these emissivities and the soil lithology over the deserts in northern Africa and the Arabian Peninsula at large scales. For this purpose, a lithology map of the area has been carefully derived from combining several geological maps and in situ lithostratigraphic columns. Infrared and microwave emissivities show large spatial variability, much more than often assumed in GCM or in NWP models, that relate well to the surface properties, especially the lithology. Changes in the lithology explain ∼40% and up to 50% of the emissivities variability at the considered frequencies in the infrared and in the microwaves. In particular, siliceous and carbonate outcrops have specific signatures that can be identify in these wavelength ranges, with a surprisingly good sensitivity of the microwaves to the presence of carbonates. This study clearly indicates that geological information is necessary for emissivity modeling, not only in the infrared but also in the microwaves, for GCM and NWP applications. The lithology maps created from the geological maps for this study is available under request. Our study also suggests that the combination of infrared and microwave emissivities has some potential for lithology mapping at large scales, especially for land surface models.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Relations between geological characteristics and satellite‐derived infrared and microwave emissivities over deserts in northern Africa and the Arabian Peninsula</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>LAND SURFACE EMISSIVITY IN ARID REGIONS</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Relations between geological characteristics and satellite‐derived infrared and microwave emissivities over deserts in northern Africa and the Arabian Peninsula</title></titleInfo><name type="personal"><namePart type="given">Carlos</namePart><namePart type="family">Jiménez</namePart><affiliation>Laboratoire d'Etudes du Rayonnement et de la Matière en Astrophysique, CNRS, Observatoire de Paris, Paris, France</affiliation><affiliation>E-mail: carlos.jimenez@obspm.fr</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Julie</namePart><namePart type="family">Catherinot</namePart><affiliation>Laboratoire d'Etudes du Rayonnement et de la Matière en Astrophysique, CNRS, Observatoire de Paris, Paris, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Catherine</namePart><namePart type="family">Prigent</namePart><affiliation>Laboratoire d'Etudes du Rayonnement et de la Matière en Astrophysique, CNRS, Observatoire de Paris, Paris, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Jack</namePart><namePart type="family">Roger</namePart><affiliation>Bureau des Ressources Géologiques et Minières, Orléans, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><dateIssued encoding="w3cdtf">2010-10-27</dateIssued><dateCaptured encoding="w3cdtf">2010-01-27</dateCaptured><dateValid encoding="w3cdtf">2010-07-12</dateValid><edition>Jiménez, C., J. Catherinot, C. Prigent, and J. Roger (2010), Relations between geological characteristics and satellite‐derived infrared and microwave emissivities over deserts in northern Africa and the Arabian Peninsula, J. Geophys. Res., 115, D20311, doi:10.1029/2010JD013959.</edition><copyrightDate encoding="w3cdtf">2010</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="figures">7</extent><extent unit="tables">3</extent><extent unit="words">2500</extent></physicalDescription><abstract>Infrared and microwave emissivities have been previously calculated over the globe from satellite observations to estimate the longwave radiative budget of the planet in global circulation models (GCM) or to facilitate the assimilation of surface‐sensitive satellite observations over land in numerical weather prediction (NWP) models. This study examines the relationship between these emissivities and the soil lithology over the deserts in northern Africa and the Arabian Peninsula at large scales. For this purpose, a lithology map of the area has been carefully derived from combining several geological maps and in situ lithostratigraphic columns. Infrared and microwave emissivities show large spatial variability, much more than often assumed in GCM or in NWP models, that relate well to the surface properties, especially the lithology. Changes in the lithology explain ∼40% and up to 50% of the emissivities variability at the considered frequencies in the infrared and in the microwaves. In particular, siliceous and carbonate outcrops have specific signatures that can be identify in these wavelength ranges, with a surprisingly good sensitivity of the microwaves to the presence of carbonates. This study clearly indicates that geological information is necessary for emissivity modeling, not only in the infrared but also in the microwaves, for GCM and NWP applications. The lithology maps created from the geological maps for this study is available under request. Our study also suggests that the combination of infrared and microwave emissivities has some potential for lithology mapping at large scales, especially for land surface models.</abstract><note type="additional physical form">Tab‐delimited Table 1.Tab‐delimited Table 2.Tab‐delimited Table 3.</note><subject><genre>keywords</genre><topic>land surface emissivity</topic><topic>arid regions</topic></subject><relatedItem type="host"><titleInfo><title>Journal of Geophysical Research: Atmospheres</title></titleInfo><titleInfo type="abbreviated"><title>J. Geophys. Res.</title></titleInfo><genre type="journal">journal</genre><subject><genre>index-terms</genre><topic authorityURI="http://psi.agu.org/subset/ACH">Composition and Chemistry</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1200">GEODESY AND GRAVITY</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1218">Mass balance</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1225">Global change from geodesy</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1600">GLOBAL CHANGE</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1622">Earth system modeling</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1631">Land/atmosphere interactions</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1800">HYDROLOGY</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1843">Land/atmosphere interactions</topic><topic authorityURI="http://psi.agu.org/taxonomy5/3300">ATMOSPHERIC PROCESSES</topic><topic authorityURI="http://psi.agu.org/taxonomy5/3322">Land/atmosphere interactions</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4300">NATURAL HAZARDS</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4301">Atmospheric</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4316">Physical modeling</topic></subject><subject><genre>article-category</genre><topic>Composition and Chemistry</topic></subject><identifier type="ISSN">0148-0227</identifier><identifier type="eISSN">2156-2202</identifier><identifier type="DOI">10.1002/(ISSN)2156-2202d</identifier><identifier type="CODEN">JGREA2</identifier><identifier type="PublisherID">JGRD</identifier><part><date>2010</date><detail type="volume"><caption>vol.</caption><number>115</number></detail><detail type="issue"><caption>no.</caption><number>D20</number></detail><extent unit="pages"><start>n/a</start><end>n/a</end><total>11</total></extent></part></relatedItem><identifier type="istex">C0FEF55D04F16E702E7A867B03966A6DA60E47FF</identifier><identifier type="DOI">10.1029/2010JD013959</identifier><identifier type="ArticleID">2010JD013959</identifier><accessCondition type="use and reproduction" contentType="copyright">Copyright 2010 by the American Geophysical Union.</accessCondition><recordInfo><recordContentSource>WILEY</recordContentSource></recordInfo></mods><json:item><extension>json</extension><original>false</original><mimetype>application/json</mimetype><uri>https://api.istex.fr/document/C0FEF55D04F16E702E7A867B03966A6DA60E47FF/metadata/json</uri></json:item></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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