Integrated pan‐Arctic melt onset detection from satellite active and passive microwave measurements, 2000–2009
Identifieur interne : 002060 ( Istex/Corpus ); précédent : 002059; suivant : 002061Integrated pan‐Arctic melt onset detection from satellite active and passive microwave measurements, 2000–2009
Auteurs : L. Wang ; G. J. Wolken ; M. J. Sharp ; S. E. L. Howell ; C. Derksen ; R. D. Brown ; T. Markus ; J. ColeSource :
- Journal of Geophysical Research: Atmospheres [ 0148-0227 ] ; 2011-11-27.
Abstract
An integrated pan‐Arctic melt onset data set is generated for the first time by combining estimates derived from active and passive microwave satellite data using algorithms developed for the northern high‐latitude land surface, ice caps, large lakes, and sea ice. The data set yields new insights into the spatial and temporal patterns of mean melt onset date (MMOD) and the associated geographic and topographic controls. For example, in the terrestrial Arctic, tree fraction and latitude explain more than 60% of the variance in MMOD, with the former exerting a stronger influence on MMOD than the latter. Elevation is also found to be an important factor controlling MMOD, with most of the Arctic exhibiting significant positive relationships between MMOD and elevation, with a mean value of 24.5 m d−1. Melt onset progresses fastest over land areas of uniform cover or elevation (40–80 km d−1) or both and slows down in mountainous areas, on ice caps, and in the forest‐tundra ecotones. Over sea ice, melt onset advances very slowly in the marginal seas, while in the central Arctic the rate of advance can exceed 100 km d−1. Comparison of the observed MMOD with simulated values from the third version of the Canadian Coupled Global Climate Model showed good agreement over land areas but weaker agreement over sea ice, particularly in the central Arctic, where simulated MMOD is about 2–3 weeks later than observed because of a cold bias in simulated surface air temperatures over sea ice.
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DOI: 10.1029/2011JD016256
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The data set yields new insights into the spatial and temporal patterns of mean melt onset date (MMOD) and the associated geographic and topographic controls. For example, in the terrestrial Arctic, tree fraction and latitude explain more than 60% of the variance in MMOD, with the former exerting a stronger influence on MMOD than the latter. Elevation is also found to be an important factor controlling MMOD, with most of the Arctic exhibiting significant positive relationships between MMOD and elevation, with a mean value of 24.5 m d−1. Melt onset progresses fastest over land areas of uniform cover or elevation (40–80 km d−1) or both and slows down in mountainous areas, on ice caps, and in the forest‐tundra ecotones. Over sea ice, melt onset advances very slowly in the marginal seas, while in the central Arctic the rate of advance can exceed 100 km d−1. Comparison of the observed MMOD with simulated values from the third version of the Canadian Coupled Global Climate Model showed good agreement over land areas but weaker agreement over sea ice, particularly in the central Arctic, where simulated MMOD is about 2–3 weeks later than observed because of a cold bias in simulated surface air temperatures over sea ice.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>L. Wang</name><affiliations><json:string>Climate Research Division, Atmospheric Science and Technology Directorate, Environment Canada, Toronto, Ontario, Canada</json:string><json:string>E-mail: Libo.Wang@ec.gc.ca</json:string></affiliations></json:item><json:item><name>G. J. 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The data set yields new insights into the spatial and temporal patterns of mean melt onset date (MMOD) and the associated geographic and topographic controls. For example, in the terrestrial Arctic, tree fraction and latitude explain more than 60% of the variance in MMOD, with the former exerting a stronger influence on MMOD than the latter. Elevation is also found to be an important factor controlling MMOD, with most of the Arctic exhibiting significant positive relationships between MMOD and elevation, with a mean value of 24.5 m d−1. Melt onset progresses fastest over land areas of uniform cover or elevation (40–80 km d−1) or both and slows down in mountainous areas, on ice caps, and in the forest‐tundra ecotones. Over sea ice, melt onset advances very slowly in the marginal seas, while in the central Arctic the rate of advance can exceed 100 km d−1. Comparison of the observed MMOD with simulated values from the third version of the Canadian Coupled Global Climate Model showed good agreement over land areas but weaker agreement over sea ice, particularly in the central Arctic, where simulated MMOD is about 2–3 weeks later than observed because of a cold bias in simulated surface air temperatures over sea ice.</p></abstract><abstract style="short"><p>First integrated pan‐Arctic melt onset data set First map of melt progression rate Unique data set for GCM validation</p></abstract><textClass><keywords scheme="keyword"><list><head>keywords</head><item><term>active microwave</term></item><item><term>cryosphere</term></item><item><term>melt onset</term></item><item><term>pan‐Arctic</term></item><item><term>passive microwave</term></item></list></keywords></textClass><textClass><keywords scheme="Journal Subject"><list><head>index-terms</head><item><term>Climate and Dynamics</term></item><item><term>CRYOSPHERE</term></item><item><term>Glaciers</term></item><item><term>Snow</term></item><item><term>Snowmelt</term></item><item><term>Remote sensing</term></item><item><term>GLOBAL CHANGE</term></item><item><term>Global climate models</term></item><item><term>HYDROLOGY</term></item><item><term>Glaciology</term></item><item><term>Snow and ice</term></item><item><term>ATMOSPHERIC PROCESSES</term></item><item><term>Global climate models</term></item><item><term>PALEOCEANOGRAPHY</term></item><item><term>Global climate models</term></item></list></keywords></textClass><textClass><keywords scheme="Journal Subject"><list><head>article-category</head><item><term>Climate and Dynamics</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="2011-05-16">Received</change><change when="2011-08-31">Registration</change><change when="2011-11-27">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api-v5.istex.fr/document/40F31A0714765BD30B628DA036ACF6598DBD9373/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="jgrd17397"><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. 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J.</givenNames> <familyName>Wolken</familyName></author>, <author><givenNames>M. J.</givenNames> <familyName>Sharp</familyName></author>, <author><givenNames>S. E. L.</givenNames> <familyName>Howell</familyName></author>, <author><givenNames>C.</givenNames> <familyName>Derksen</familyName></author>, <author><givenNames>R. D.</givenNames> <familyName>Brown</familyName></author>, <author><givenNames>T.</givenNames> <familyName>Markus</familyName></author>, and <author><givenNames>J.</givenNames> <familyName>Cole</familyName></author> (<pubYear year="2011">2011</pubYear>), <articleTitle>Integrated pan‐Arctic melt onset detection from satellite active and passive microwave measurements, 2000–2009</articleTitle>, <journalTitle>J. Geophys. Res.</journalTitle>, <vol>116</vol>, D22103, doi:<accessionId ref="info:doi/10.1029/2011JD016256">10.1029/2011JD016256</accessionId>.</citation></selfCitationGroup><linkGroup><link type="toTypesetVersion" href="file:JGRD.JGRD17397.pdf"></link></linkGroup></publicationMeta><contentMeta><countGroup><count type="wordTotal" number="11000"></count><count type="figureTotal" number="10"></count><count type="tableTotal" number="4"></count></countGroup><titleGroup><title type="main">Integrated pan‐Arctic melt onset detection from satellite active and passive microwave measurements, 2000–2009</title><title type="short">INTEGRATED PAN‐ARCTIC MELT ONSET</title><title type="shortAuthors">Wang <i>et al</i>.</title></titleGroup><creators><creator creatorRole="author" xml:id="jgrd17397-cr-0001" affiliationRef="#jgrd17397-aff-0001"><personName><givenNames>L.</givenNames> <familyName>Wang</familyName></personName><contactDetails><email normalForm="Libo.Wang@ec.gc.ca">Libo.Wang@ec.gc.ca</email></contactDetails></creator><creator creatorRole="author" xml:id="jgrd17397-cr-0002" affiliationRef="#jgrd17397-aff-0002 #jgrd17397-aff-0003"><personName><givenNames>G. J.</givenNames> <familyName>Wolken</familyName></personName></creator><creator creatorRole="author" xml:id="jgrd17397-cr-0003" affiliationRef="#jgrd17397-aff-0003"><personName><givenNames>M. J.</givenNames> <familyName>Sharp</familyName></personName></creator><creator creatorRole="author" xml:id="jgrd17397-cr-0004" affiliationRef="#jgrd17397-aff-0001"><personName><givenNames>S. E. L.</givenNames> <familyName>Howell</familyName></personName></creator><creator creatorRole="author" xml:id="jgrd17397-cr-0005" affiliationRef="#jgrd17397-aff-0001"><personName><givenNames>C.</givenNames> <familyName>Derksen</familyName></personName></creator><creator creatorRole="author" xml:id="jgrd17397-cr-0006" affiliationRef="#jgrd17397-aff-0004"><personName><givenNames>R. D.</givenNames> <familyName>Brown</familyName></personName></creator><creator creatorRole="author" xml:id="jgrd17397-cr-0007" affiliationRef="#jgrd17397-aff-0005"><personName><givenNames>T.</givenNames> <familyName>Markus</familyName></personName></creator><creator creatorRole="author" xml:id="jgrd17397-cr-0008" affiliationRef="#jgrd17397-aff-0001"><personName><givenNames>J.</givenNames> <familyName>Cole</familyName></personName></creator></creators><affiliationGroup><affiliation countryCode="CA" type="organization" xml:id="jgrd17397-aff-0001"><orgName>Climate Research Division, Atmospheric Science and Technology Directorate, Environment Canada</orgName><address><city>Toronto, Ontario</city><country>Canada</country></address></affiliation><affiliation countryCode="US" type="organization" xml:id="jgrd17397-aff-0002"><orgName>Alaska Division of Geological and Geophysical Surveys</orgName><address><city>Fairbanks</city><countryPart>Alaska</countryPart><country>USA</country></address></affiliation><affiliation countryCode="CA" type="organization" xml:id="jgrd17397-aff-0003"><orgDiv>Department of Earth and Atmospheric Sciences</orgDiv><orgName>University of Alberta</orgName><address><city>Edmonton, Alberta</city><country>Canada</country></address></affiliation><affiliation countryCode="CA" type="organization" xml:id="jgrd17397-aff-0004"><orgName>Climate Research Division, Ouranos, Environment Canada</orgName><address><city>Montreal, Quebec</city><country>Canada</country></address></affiliation><affiliation countryCode="US" type="organization" xml:id="jgrd17397-aff-0005"><orgDiv>Cryospheric Sciences Branch</orgDiv><orgName>NASA Goddard Space Flight Center</orgName><address><city>Greenbelt</city><countryPart>Maryland</countryPart><country>USA</country></address></affiliation></affiliationGroup><keywordGroup type="author"><keyword xml:id="jgrd17397-kwd-0001">active microwave</keyword><keyword xml:id="jgrd17397-kwd-0002">cryosphere</keyword><keyword xml:id="jgrd17397-kwd-0003">melt onset</keyword><keyword xml:id="jgrd17397-kwd-0004">pan‐Arctic</keyword><keyword xml:id="jgrd17397-kwd-0005">passive microwave</keyword></keywordGroup><supportingInformation><supportingInfoItem><mediaResource alt="supplementary data" mimeType="text/plain" href="urn-x:wiley:01480227:media:jgrd17397:jgrd17397-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:jgrd17397:jgrd17397-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:jgrd17397:jgrd17397-sup-0003-t03"></mediaResource><caption>Tab‐delimited Table 3.</caption></supportingInfoItem><supportingInfoItem><mediaResource alt="supplementary data" mimeType="text/plain" href="urn-x:wiley:01480227:media:jgrd17397:jgrd17397-sup-0004-t04"></mediaResource><caption>Tab‐delimited Table 4.</caption></supportingInfoItem></supportingInformation><abstractGroup><abstract type="main"><p xml:id="jgrd17397-para-0001" label="1">An integrated pan‐Arctic melt onset data set is generated for the first time by combining estimates derived from active and passive microwave satellite data using algorithms developed for the northern high‐latitude land surface, ice caps, large lakes, and sea ice. The data set yields new insights into the spatial and temporal patterns of mean melt onset date (MMOD) and the associated geographic and topographic controls. For example, in the terrestrial Arctic, tree fraction and latitude explain more than 60% of the variance in MMOD, with the former exerting a stronger influence on MMOD than the latter. Elevation is also found to be an important factor controlling MMOD, with most of the Arctic exhibiting significant positive relationships between MMOD and elevation, with a mean value of 24.5 m d<sup>−1</sup>. Melt onset progresses fastest over land areas of uniform cover or elevation (40–80 km d<sup>−1</sup>) or both and slows down in mountainous areas, on ice caps, and in the forest‐tundra ecotones. Over sea ice, melt onset advances very slowly in the marginal seas, while in the central Arctic the rate of advance can exceed 100 km d<sup>−1</sup>. Comparison of the observed MMOD with simulated values from the third version of the Canadian Coupled Global Climate Model showed good agreement over land areas but weaker agreement over sea ice, particularly in the central Arctic, where simulated MMOD is about 2–3 weeks later than observed because of a cold bias in simulated surface air temperatures over sea ice.</p></abstract><abstract type="short"><title type="main">Key Points</title><p xml:id="jgrd17397-para-0002"><list style="bulleted"><listItem>First integrated pan‐Arctic melt onset data set</listItem><listItem>First map of melt progression rate</listItem><listItem>Unique data set for GCM validation</listItem></list></p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Integrated pan‐Arctic melt onset detection from satellite active and passive microwave measurements, 2000–2009</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>INTEGRATED PAN‐ARCTIC MELT ONSET</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Integrated pan‐Arctic melt onset detection from satellite active and passive microwave measurements, 2000–2009</title></titleInfo><name type="personal"><namePart type="given">L.</namePart><namePart type="family">Wang</namePart><affiliation>Climate Research Division, Atmospheric Science and Technology Directorate, Environment Canada, Toronto, Ontario, Canada</affiliation><affiliation>E-mail: Libo.Wang@ec.gc.ca</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">G. J.</namePart><namePart type="family">Wolken</namePart><affiliation>Alaska Division of Geological and Geophysical Surveys, Fairbanks, Alaska, USA</affiliation><affiliation>Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">M. J.</namePart><namePart type="family">Sharp</namePart><affiliation>Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">S. E. L.</namePart><namePart type="family">Howell</namePart><affiliation>Climate Research Division, Atmospheric Science and Technology Directorate, Environment Canada, Toronto, Ontario, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">C.</namePart><namePart type="family">Derksen</namePart><affiliation>Climate Research Division, Atmospheric Science and Technology Directorate, Environment Canada, Toronto, Ontario, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">R. D.</namePart><namePart type="family">Brown</namePart><affiliation>Climate Research Division, Ouranos, Environment Canada, Montreal, Quebec, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">T.</namePart><namePart type="family">Markus</namePart><affiliation>Cryospheric Sciences Branch, NASA Goddard Space Flight Center, Maryland, Greenbelt, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.</namePart><namePart type="family">Cole</namePart><affiliation>Climate Research Division, Atmospheric Science and Technology Directorate, Environment Canada, Toronto, Ontario, Canada</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">2011-11-27</dateIssued><dateCaptured encoding="w3cdtf">2011-05-16</dateCaptured><dateValid encoding="w3cdtf">2011-08-31</dateValid><edition>Wang, L., G. J. Wolken, M. J. Sharp, S. E. L. Howell, C. Derksen, R. D. Brown, T. Markus, and J. Cole (2011), Integrated pan‐Arctic melt onset detection from satellite active and passive microwave measurements, 2000–2009, J. Geophys. Res., 116, D22103, doi:10.1029/2011JD016256.</edition><copyrightDate encoding="w3cdtf">2011</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">10</extent><extent unit="tables">4</extent><extent unit="words">11000</extent></physicalDescription><abstract>An integrated pan‐Arctic melt onset data set is generated for the first time by combining estimates derived from active and passive microwave satellite data using algorithms developed for the northern high‐latitude land surface, ice caps, large lakes, and sea ice. The data set yields new insights into the spatial and temporal patterns of mean melt onset date (MMOD) and the associated geographic and topographic controls. For example, in the terrestrial Arctic, tree fraction and latitude explain more than 60% of the variance in MMOD, with the former exerting a stronger influence on MMOD than the latter. Elevation is also found to be an important factor controlling MMOD, with most of the Arctic exhibiting significant positive relationships between MMOD and elevation, with a mean value of 24.5 m d−1. Melt onset progresses fastest over land areas of uniform cover or elevation (40–80 km d−1) or both and slows down in mountainous areas, on ice caps, and in the forest‐tundra ecotones. Over sea ice, melt onset advances very slowly in the marginal seas, while in the central Arctic the rate of advance can exceed 100 km d−1. Comparison of the observed MMOD with simulated values from the third version of the Canadian Coupled Global Climate Model showed good agreement over land areas but weaker agreement over sea ice, particularly in the central Arctic, where simulated MMOD is about 2–3 weeks later than observed because of a cold bias in simulated surface air temperatures over sea ice.</abstract><abstract type="short">First integrated pan‐Arctic melt onset data set First map of melt progression rate Unique data set for GCM validation</abstract><note type="additional physical form">Tab‐delimited Table 1.Tab‐delimited Table 2.Tab‐delimited Table 3.Tab‐delimited Table 4.</note><subject><genre>keywords</genre><topic>active microwave</topic><topic>cryosphere</topic><topic>melt onset</topic><topic>pan‐Arctic</topic><topic>passive microwave</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/ACL">Climate and Dynamics</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0700">CRYOSPHERE</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0720">Glaciers</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0736">Snow</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0740">Snowmelt</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0758">Remote sensing</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1600">GLOBAL CHANGE</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1626">Global climate models</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1800">HYDROLOGY</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1827">Glaciology</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1863">Snow and ice</topic><topic authorityURI="http://psi.agu.org/taxonomy5/3300">ATMOSPHERIC PROCESSES</topic><topic authorityURI="http://psi.agu.org/taxonomy5/3337">Global climate models</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4900">PALEOCEANOGRAPHY</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4928">Global climate models</topic></subject><subject><genre>article-category</genre><topic>Climate and Dynamics</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>2011</date><detail type="volume"><caption>vol.</caption><number>116</number></detail><detail type="issue"><caption>no.</caption><number>D22</number></detail><extent unit="pages"><start>n/a</start><end>n/a</end><total>15</total></extent></part></relatedItem><identifier type="istex">40F31A0714765BD30B628DA036ACF6598DBD9373</identifier><identifier type="DOI">10.1029/2011JD016256</identifier><identifier type="ArticleID">2011JD016256</identifier><accessCondition type="use and reproduction" contentType="copyright">Copyright 2011 by the American Geophysical Union.</accessCondition><recordInfo><recordContentSource>WILEY</recordContentSource></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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