Seasonal Dependence of the Effect of Arctic Greening on Tropical Precipitation
This paper examines the seasonal dependence of the effect of Arctic greening on tropical precipitation. In CAM3/CLM3 coupled to a mixed layer ocean, shrub and grasslands poleward of 60 degrees N are replaced with boreal forests. With darker Arctic vegetation, the absorption of solar energy increases...
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AMER METEOROLOGICAL SOC
2015
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Online Access: | https://scholarworks.unist.ac.kr/handle/201301/16867 https://doi.org/10.1175/JCLI-D-15-0079.1 http://journals.ametsoc.org/doi/abs/10.1175/JCLI-D-15-0079.1 |
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ftuisanist:oai:scholarworks.unist.ac.kr:201301/16867 2023-05-15T14:31:24+02:00 Seasonal Dependence of the Effect of Arctic Greening on Tropical Precipitation Kang, Sarah M. Kim, Baek-Min Frierson, Dargan M. W. Jeong, Su-Jong Seo, Jeongbin Chae, Yoojeong 2015-08 https://scholarworks.unist.ac.kr/handle/201301/16867 https://doi.org/10.1175/JCLI-D-15-0079.1 http://journals.ametsoc.org/doi/abs/10.1175/JCLI-D-15-0079.1 ?????? unknown AMER METEOROLOGICAL SOC JOURNAL OF CLIMATE, v.28, no.15, pp.6086 - 6095 0894-8755 https://scholarworks.unist.ac.kr/handle/201301/16867 1107 23013 2-s2.0-84942858739 000359532800013 doi:10.1175/JCLI-D-15-0079.1 http://journals.ametsoc.org/doi/abs/10.1175/JCLI-D-15-0079.1 ARTICLE ART 2015 ftuisanist https://doi.org/10.1175/JCLI-D-15-0079.1 2022-05-15T05:25:02Z This paper examines the seasonal dependence of the effect of Arctic greening on tropical precipitation. In CAM3/CLM3 coupled to a mixed layer ocean, shrub and grasslands poleward of 60 degrees N are replaced with boreal forests. With darker Arctic vegetation, the absorption of solar energy increases, but primarily in boreal spring and summer since little insolation reaches the Arctic in boreal winter. The net energy input into the northern extratropics is partly balanced by southward atmospheric energy transport across the equator by an anomalous Hadley circulation, resulting in a northward shift of the tropical precipitation. In contrast, in boreal fall, the slight increase in insolation over the Arctic is more than offset by increased outgoing longwave radiation and reduced surface turbulent fluxes in midlatitudes, from the warmer atmosphere. As a result, the Northern Hemisphere atmosphere loses energy, which is compensated by a northward cross-equatorial atmospheric energy transport, leading to a southward shift of the tropical precipitation in boreal fall. Thus, although Arctic vegetation is changed throughout the year, its effect on tropical precipitation exhibits substantial seasonal variations. close 0 0 0 Article in Journal/Newspaper Arctic Greening Arctic ScholarWorks@UNIST (Ulsan National Institute of Science and Technology) Arctic Journal of Climate 28 15 6086 6095 |
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ScholarWorks@UNIST (Ulsan National Institute of Science and Technology) |
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language |
unknown |
description |
This paper examines the seasonal dependence of the effect of Arctic greening on tropical precipitation. In CAM3/CLM3 coupled to a mixed layer ocean, shrub and grasslands poleward of 60 degrees N are replaced with boreal forests. With darker Arctic vegetation, the absorption of solar energy increases, but primarily in boreal spring and summer since little insolation reaches the Arctic in boreal winter. The net energy input into the northern extratropics is partly balanced by southward atmospheric energy transport across the equator by an anomalous Hadley circulation, resulting in a northward shift of the tropical precipitation. In contrast, in boreal fall, the slight increase in insolation over the Arctic is more than offset by increased outgoing longwave radiation and reduced surface turbulent fluxes in midlatitudes, from the warmer atmosphere. As a result, the Northern Hemisphere atmosphere loses energy, which is compensated by a northward cross-equatorial atmospheric energy transport, leading to a southward shift of the tropical precipitation in boreal fall. Thus, although Arctic vegetation is changed throughout the year, its effect on tropical precipitation exhibits substantial seasonal variations. close 0 0 0 |
format |
Article in Journal/Newspaper |
author |
Kang, Sarah M. Kim, Baek-Min Frierson, Dargan M. W. Jeong, Su-Jong Seo, Jeongbin Chae, Yoojeong |
spellingShingle |
Kang, Sarah M. Kim, Baek-Min Frierson, Dargan M. W. Jeong, Su-Jong Seo, Jeongbin Chae, Yoojeong Seasonal Dependence of the Effect of Arctic Greening on Tropical Precipitation |
author_facet |
Kang, Sarah M. Kim, Baek-Min Frierson, Dargan M. W. Jeong, Su-Jong Seo, Jeongbin Chae, Yoojeong |
author_sort |
Kang, Sarah M. |
title |
Seasonal Dependence of the Effect of Arctic Greening on Tropical Precipitation |
title_short |
Seasonal Dependence of the Effect of Arctic Greening on Tropical Precipitation |
title_full |
Seasonal Dependence of the Effect of Arctic Greening on Tropical Precipitation |
title_fullStr |
Seasonal Dependence of the Effect of Arctic Greening on Tropical Precipitation |
title_full_unstemmed |
Seasonal Dependence of the Effect of Arctic Greening on Tropical Precipitation |
title_sort |
seasonal dependence of the effect of arctic greening on tropical precipitation |
publisher |
AMER METEOROLOGICAL SOC |
publishDate |
2015 |
url |
https://scholarworks.unist.ac.kr/handle/201301/16867 https://doi.org/10.1175/JCLI-D-15-0079.1 http://journals.ametsoc.org/doi/abs/10.1175/JCLI-D-15-0079.1 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Greening Arctic |
genre_facet |
Arctic Greening Arctic |
op_relation |
JOURNAL OF CLIMATE, v.28, no.15, pp.6086 - 6095 0894-8755 https://scholarworks.unist.ac.kr/handle/201301/16867 1107 23013 2-s2.0-84942858739 000359532800013 doi:10.1175/JCLI-D-15-0079.1 http://journals.ametsoc.org/doi/abs/10.1175/JCLI-D-15-0079.1 |
op_doi |
https://doi.org/10.1175/JCLI-D-15-0079.1 |
container_title |
Journal of Climate |
container_volume |
28 |
container_issue |
15 |
container_start_page |
6086 |
op_container_end_page |
6095 |
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1766305053043326976 |