Isolating the Temperature Feedback Loop and Its Effects on Surface Temperature
Climate feedback processes are known to substantially amplify the surface warming response to an increase of greenhouse gases. When the forcing and feedbacks modify the temperature response they trigger temperature feedback loops that amplify the direct temperature changes due to the forcing and non...
Published in: | Journal of the Atmospheric Sciences |
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Online Access: | https://doi.org/10.1175/JAS-D-15-0287.1 http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000380764400018 http://fsu.digital.flvc.org/islandora/object/fsu%3A405711/datastream/TN/view/Isolating%20the%20Temperature%20Feedback%20Loop%20and%20Its%20Effects%20on%20Surface%20Temperature.jpg |
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ftfloridastunidc:oai:fsu.digital.flvc.org:fsu_405711 2023-05-15T13:11:08+02:00 Isolating the Temperature Feedback Loop and Its Effects on Surface Temperature Sejas, Sergio A. (authoraut) Cai, Ming (authoraut) 1 online resource computer application/pdf https://doi.org/10.1175/JAS-D-15-0287.1 http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000380764400018 http://fsu.digital.flvc.org/islandora/object/fsu%3A405711/datastream/TN/view/Isolating%20the%20Temperature%20Feedback%20Loop%20and%20Its%20Effects%20on%20Surface%20Temperature.jpg English eng eng Journal of the Atmospheric Sciences--0022-4928 Text ftfloridastunidc https://doi.org/10.1175/JAS-D-15-0287.1 2020-08-10T18:24:45Z Climate feedback processes are known to substantially amplify the surface warming response to an increase of greenhouse gases. When the forcing and feedbacks modify the temperature response they trigger temperature feedback loops that amplify the direct temperature changes due to the forcing and nontemperature feedbacks through the thermal-radiative coupling between the atmosphere and surface. This study introduces a new feedback-response analysis method that can isolate and quantify the effects of the temperature feedback loops of individual processes on surface temperature from their corresponding direct surface temperature responses. The authors analyze a 1% yr 21 increase of CO2 simulation of the NCAR CCSM4 at the time of CO2 doubling to illustrate the new method. The Planck sensitivity parameter, which indicates colder regions experience stronger surface temperature responses given the same change in surface energy flux, is the inherent factor that leads to polar warming amplification (PWA). This effect explains the PWA in the Antarctic, while the direct temperature response to the albedo and cloud feedbacks further explains the greater PWA of the Arctic. Temperature feedback loops, particularly the one associated with the albedo feedback, further amplify the Arctic surface warming relative to the tropics. In the tropics, temperature feedback loops associated with the CO2 forcing and water vapor feedback cause most of the surface warming. Overall, the temperature feedback is responsible for most of the surface warming globally, accounting for nearly 76% of the global-mean surface warming. This is 3 times larger than the next largest warming contribution, indicating that the temperature feedback loop is the preeminent contributor to the surface warming. arctic amplification, climate feedbacks, co2, framework, gcm, general-circulation model The publisher’s version of record is available at http://www.dx.doi.org/10.1175/JAS-D-15-0287.1 Text albedo Antarc* Antarctic Arctic Florida State University Digital Library (FSUDL) Antarctic Arctic The Antarctic Journal of the Atmospheric Sciences 73 8 3287 3303 |
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Open Polar |
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Florida State University Digital Library (FSUDL) |
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ftfloridastunidc |
language |
English |
description |
Climate feedback processes are known to substantially amplify the surface warming response to an increase of greenhouse gases. When the forcing and feedbacks modify the temperature response they trigger temperature feedback loops that amplify the direct temperature changes due to the forcing and nontemperature feedbacks through the thermal-radiative coupling between the atmosphere and surface. This study introduces a new feedback-response analysis method that can isolate and quantify the effects of the temperature feedback loops of individual processes on surface temperature from their corresponding direct surface temperature responses. The authors analyze a 1% yr 21 increase of CO2 simulation of the NCAR CCSM4 at the time of CO2 doubling to illustrate the new method. The Planck sensitivity parameter, which indicates colder regions experience stronger surface temperature responses given the same change in surface energy flux, is the inherent factor that leads to polar warming amplification (PWA). This effect explains the PWA in the Antarctic, while the direct temperature response to the albedo and cloud feedbacks further explains the greater PWA of the Arctic. Temperature feedback loops, particularly the one associated with the albedo feedback, further amplify the Arctic surface warming relative to the tropics. In the tropics, temperature feedback loops associated with the CO2 forcing and water vapor feedback cause most of the surface warming. Overall, the temperature feedback is responsible for most of the surface warming globally, accounting for nearly 76% of the global-mean surface warming. This is 3 times larger than the next largest warming contribution, indicating that the temperature feedback loop is the preeminent contributor to the surface warming. arctic amplification, climate feedbacks, co2, framework, gcm, general-circulation model The publisher’s version of record is available at http://www.dx.doi.org/10.1175/JAS-D-15-0287.1 |
author2 |
Sejas, Sergio A. (authoraut) Cai, Ming (authoraut) |
format |
Text |
title |
Isolating the Temperature Feedback Loop and Its Effects on Surface Temperature |
spellingShingle |
Isolating the Temperature Feedback Loop and Its Effects on Surface Temperature |
title_short |
Isolating the Temperature Feedback Loop and Its Effects on Surface Temperature |
title_full |
Isolating the Temperature Feedback Loop and Its Effects on Surface Temperature |
title_fullStr |
Isolating the Temperature Feedback Loop and Its Effects on Surface Temperature |
title_full_unstemmed |
Isolating the Temperature Feedback Loop and Its Effects on Surface Temperature |
title_sort |
isolating the temperature feedback loop and its effects on surface temperature |
url |
https://doi.org/10.1175/JAS-D-15-0287.1 http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000380764400018 http://fsu.digital.flvc.org/islandora/object/fsu%3A405711/datastream/TN/view/Isolating%20the%20Temperature%20Feedback%20Loop%20and%20Its%20Effects%20on%20Surface%20Temperature.jpg |
geographic |
Antarctic Arctic The Antarctic |
geographic_facet |
Antarctic Arctic The Antarctic |
genre |
albedo Antarc* Antarctic Arctic |
genre_facet |
albedo Antarc* Antarctic Arctic |
op_relation |
Journal of the Atmospheric Sciences--0022-4928 |
op_doi |
https://doi.org/10.1175/JAS-D-15-0287.1 |
container_title |
Journal of the Atmospheric Sciences |
container_volume |
73 |
container_issue |
8 |
container_start_page |
3287 |
op_container_end_page |
3303 |
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1766246056988770304 |