Increasing frequency, intensity and duration of observed global heatwaves and warm spells
Using the latest HadGHCND daily temperature dataset, global trends in observed summertime heatwaves and annually calculated warm spells for 1950–2011 are analysed via a multi‐index, multi‐aspect framework. Three indices that separately focus on maximum temperature (TX90pct), minimum temperature (TN9...
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| Veröffentlicht in: | Geophysical research letters 2012-10, Vol.39 (20), p.n/a |
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| creator | Perkins, S. E. Alexander, L. V. Nairn, J. R. |
| description | Using the latest HadGHCND daily temperature dataset, global trends in observed summertime heatwaves and annually calculated warm spells for 1950–2011 are analysed via a multi‐index, multi‐aspect framework. Three indices that separately focus on maximum temperature (TX90pct), minimum temperature (TN90pct) and average temperature (EHF) were studied with respect to five characteristics of event intensity, frequency and duration. Despite which index is employed, increases in heatwave/warm spell intensity, frequency and duration are found. Furthermore, TX90pct and TN90pct trends are larger and exhibit more significance for warm spells, implying that non‐summer events are driving annual trends over some regions. Larger increases in TN90pct aspects relative to EHF and TX90pct are also observed. While qualitative information on event trends is similar across the indices, quantitative values vary. This result highlights the importance of employing the most appropriate index when assessing the impact of sustained extreme temperature events.
Key Points
Global heatwaves have increased in frequency, intensity and duration
Non‐summer events are driving annual changes
Nighttime heatwaves have increased faster than daytime and daily‐average events |
| doi_str_mv | 10.1029/2012GL053361 |
| format | Article |
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Key Points
Global heatwaves have increased in frequency, intensity and duration
Non‐summer events are driving annual changes
Nighttime heatwaves have increased faster than daytime and daily‐average events</description><identifier>ISSN: 0094-8276</identifier><identifier>EISSN: 1944-8007</identifier><identifier>DOI: 10.1029/2012GL053361</identifier><identifier>CODEN: GPRLAJ</identifier><language>eng</language><publisher>Washington, DC: Blackwell Publishing Ltd</publisher><subject>Atmosphere ; Climate change ; Driving ; Earth ; Earth sciences ; Earth, ocean, space ; EHF ; Exact sciences and technology ; Extreme values ; Geophysics ; global ; Heat waves ; heatwaves ; Mathematical analysis ; observations ; Scientific apparatus & instruments ; Trends ; warm spells</subject><ispartof>Geophysical research letters, 2012-10, Vol.39 (20), p.n/a</ispartof><rights>2012. American Geophysical Union. All Rights Reserved.</rights><rights>2014 INIST-CNRS</rights><rights>Copyright American Geophysical Union 2012</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c5168-343b7f6bacb15c9d5fabb1708bbf4a11cbf736f01a601a6b690f50adbc9398233</citedby><cites>FETCH-LOGICAL-c5168-343b7f6bacb15c9d5fabb1708bbf4a11cbf736f01a601a6b690f50adbc9398233</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1029%2F2012GL053361$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1029%2F2012GL053361$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,778,782,1414,1430,11503,27913,27914,45563,45564,46398,46457,46822,46881</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=26635727$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Perkins, S. E.</creatorcontrib><creatorcontrib>Alexander, L. V.</creatorcontrib><creatorcontrib>Nairn, J. R.</creatorcontrib><title>Increasing frequency, intensity and duration of observed global heatwaves and warm spells</title><title>Geophysical research letters</title><addtitle>Geophys. Res. Lett</addtitle><description>Using the latest HadGHCND daily temperature dataset, global trends in observed summertime heatwaves and annually calculated warm spells for 1950–2011 are analysed via a multi‐index, multi‐aspect framework. Three indices that separately focus on maximum temperature (TX90pct), minimum temperature (TN90pct) and average temperature (EHF) were studied with respect to five characteristics of event intensity, frequency and duration. Despite which index is employed, increases in heatwave/warm spell intensity, frequency and duration are found. Furthermore, TX90pct and TN90pct trends are larger and exhibit more significance for warm spells, implying that non‐summer events are driving annual trends over some regions. Larger increases in TN90pct aspects relative to EHF and TX90pct are also observed. While qualitative information on event trends is similar across the indices, quantitative values vary. This result highlights the importance of employing the most appropriate index when assessing the impact of sustained extreme temperature events.
Key Points
Global heatwaves have increased in frequency, intensity and duration
Non‐summer events are driving annual changes
Nighttime heatwaves have increased faster than daytime and daily‐average events</description><subject>Atmosphere</subject><subject>Climate change</subject><subject>Driving</subject><subject>Earth</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>EHF</subject><subject>Exact sciences and technology</subject><subject>Extreme values</subject><subject>Geophysics</subject><subject>global</subject><subject>Heat waves</subject><subject>heatwaves</subject><subject>Mathematical analysis</subject><subject>observations</subject><subject>Scientific apparatus & instruments</subject><subject>Trends</subject><subject>warm spells</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNp9kE1rVDEUhoMoONbu_AEBEVz0aj5ukpulDM5YGSxUS9FNOMlNauqd3Glyp-P8e1OnFOnCxeGcxfO8vByEXlHyjhKm3zNC2XJFBOeSPkEzqtu26QhRT9GMEF1vpuRz9KKUa0IIJ5zO0PfT5LKHEtMVDtnfbH1y-xMc0-RTidMeQ-pxv80wxTHhMeDRFp9vfY-vhtHCgH96mHZw68tfcgd5jcvGD0N5iZ4FGIo_vt9H6GLx8dv8U7M6W57OP6waJ6jsGt5yq4K04CwVTvcigLVUkc7a0AKlzgbFZSAU5N1YqUkQBHrrNNcd4_wIvT3kbvJY65fJrGNxtQEkP26LoYzRTmkqZEVfP0Kvx21OtZ2htAKia5Wo1MmBcnksJftgNjmuIe8NJebuz-bfP1f8zX0oFAdDyJBcLA8Ok5ILxVTl2IHbxcHv_5tplucrpqXqqtQcpFgm__tBgvzLSMWVMJdflubzZbeYn3_9YRb8DwfzmqY</recordid><startdate>20121028</startdate><enddate>20121028</enddate><creator>Perkins, S. 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E. ; Alexander, L. V. ; Nairn, J. R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5168-343b7f6bacb15c9d5fabb1708bbf4a11cbf736f01a601a6b690f50adbc9398233</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Atmosphere</topic><topic>Climate change</topic><topic>Driving</topic><topic>Earth</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>EHF</topic><topic>Exact sciences and technology</topic><topic>Extreme values</topic><topic>Geophysics</topic><topic>global</topic><topic>Heat waves</topic><topic>heatwaves</topic><topic>Mathematical analysis</topic><topic>observations</topic><topic>Scientific apparatus & instruments</topic><topic>Trends</topic><topic>warm spells</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Perkins, S. E.</creatorcontrib><creatorcontrib>Alexander, L. 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E.</au><au>Alexander, L. V.</au><au>Nairn, J. R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Increasing frequency, intensity and duration of observed global heatwaves and warm spells</atitle><jtitle>Geophysical research letters</jtitle><addtitle>Geophys. Res. Lett</addtitle><date>2012-10-28</date><risdate>2012</risdate><volume>39</volume><issue>20</issue><epage>n/a</epage><issn>0094-8276</issn><eissn>1944-8007</eissn><coden>GPRLAJ</coden><abstract>Using the latest HadGHCND daily temperature dataset, global trends in observed summertime heatwaves and annually calculated warm spells for 1950–2011 are analysed via a multi‐index, multi‐aspect framework. Three indices that separately focus on maximum temperature (TX90pct), minimum temperature (TN90pct) and average temperature (EHF) were studied with respect to five characteristics of event intensity, frequency and duration. Despite which index is employed, increases in heatwave/warm spell intensity, frequency and duration are found. Furthermore, TX90pct and TN90pct trends are larger and exhibit more significance for warm spells, implying that non‐summer events are driving annual trends over some regions. Larger increases in TN90pct aspects relative to EHF and TX90pct are also observed. While qualitative information on event trends is similar across the indices, quantitative values vary. This result highlights the importance of employing the most appropriate index when assessing the impact of sustained extreme temperature events.
Key Points
Global heatwaves have increased in frequency, intensity and duration
Non‐summer events are driving annual changes
Nighttime heatwaves have increased faster than daytime and daily‐average events</abstract><cop>Washington, DC</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/2012GL053361</doi><tpages>5</tpages></addata></record> |
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| ispartof | Geophysical research letters, 2012-10, Vol.39 (20), p.n/a |
| issn | 0094-8276 1944-8007 |
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| source | Wiley Online Library Journals Frontfile Complete; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Wiley Free Content; Wiley-Blackwell AGU Digital Library |
| subjects | Atmosphere Climate change Driving Earth Earth sciences Earth, ocean, space EHF Exact sciences and technology Extreme values Geophysics global Heat waves heatwaves Mathematical analysis observations Scientific apparatus & instruments Trends warm spells |
| title | Increasing frequency, intensity and duration of observed global heatwaves and warm spells |
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