What caused the cool summer over northern Central Asia, East Asia and central North America during 2009?
Abstract Cool and wet weather conditions hit northern Central Asia, East Asia and central North America during the 2009 summer in concert with a strong jet stream and a prominent meandering upper-level circulation in the Northern Hemisphere mid-latitudes despite the fact that the year 2009 is the fi...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.1089.9226 2023-05-15T15:07:14+02:00 What caused the cool summer over northern Central Asia, East Asia and central North America during 2009? Kyung-Ja Ha Jung-Eun Chu June-Yi Lee Bin Wang Saji N Hameed Masahiro Watanabe The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1089.9226 http://iprc.soest.hawaii.edu/users/jylee/publication/3.%20Ha%20et%20al.%202012%20ERL.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1089.9226 http://iprc.soest.hawaii.edu/users/jylee/publication/3.%20Ha%20et%20al.%202012%20ERL.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://iprc.soest.hawaii.edu/users/jylee/publication/3.%20Ha%20et%20al.%202012%20ERL.pdf text ftciteseerx 2020-05-24T00:21:08Z Abstract Cool and wet weather conditions hit northern Central Asia, East Asia and central North America during the 2009 summer in concert with a strong jet stream and a prominent meandering upper-level circulation in the Northern Hemisphere mid-latitudes despite the fact that the year 2009 is the fifth warmest year globally in the modern record. It is found that the conspicuous atmospheric variability in the entire Northern Hemisphere mid-latitudes during the summer of 2009 was caused by a combination of teleconnections associated with significant tropical thermal forcings, strong polar forcing, and interaction between high-frequency weather events and climate anomalies. The strong negative circumglobal teleconnection pattern associated with the deficient Indian summer monsoon rainfall and developing El Niño condition was the major contributor to the cool and wet summer in June. On the other hand, the July weather conditions were attributable to the high-latitude impact of the unprecedented negative Arctic Oscillation, together with the Rossby wave response to the subtropical heating generated by convective activities over the Western North Pacific summer monsoon region. It is also noted that enhanced storm track activity and frequent cold surges from high-latitudes may have played a role in the cool and wet summer over the regions of interest. Text Arctic Unknown Arctic Indian Pacific |
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English |
description |
Abstract Cool and wet weather conditions hit northern Central Asia, East Asia and central North America during the 2009 summer in concert with a strong jet stream and a prominent meandering upper-level circulation in the Northern Hemisphere mid-latitudes despite the fact that the year 2009 is the fifth warmest year globally in the modern record. It is found that the conspicuous atmospheric variability in the entire Northern Hemisphere mid-latitudes during the summer of 2009 was caused by a combination of teleconnections associated with significant tropical thermal forcings, strong polar forcing, and interaction between high-frequency weather events and climate anomalies. The strong negative circumglobal teleconnection pattern associated with the deficient Indian summer monsoon rainfall and developing El Niño condition was the major contributor to the cool and wet summer in June. On the other hand, the July weather conditions were attributable to the high-latitude impact of the unprecedented negative Arctic Oscillation, together with the Rossby wave response to the subtropical heating generated by convective activities over the Western North Pacific summer monsoon region. It is also noted that enhanced storm track activity and frequent cold surges from high-latitudes may have played a role in the cool and wet summer over the regions of interest. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Kyung-Ja Ha Jung-Eun Chu June-Yi Lee Bin Wang Saji N Hameed Masahiro Watanabe |
spellingShingle |
Kyung-Ja Ha Jung-Eun Chu June-Yi Lee Bin Wang Saji N Hameed Masahiro Watanabe What caused the cool summer over northern Central Asia, East Asia and central North America during 2009? |
author_facet |
Kyung-Ja Ha Jung-Eun Chu June-Yi Lee Bin Wang Saji N Hameed Masahiro Watanabe |
author_sort |
Kyung-Ja Ha |
title |
What caused the cool summer over northern Central Asia, East Asia and central North America during 2009? |
title_short |
What caused the cool summer over northern Central Asia, East Asia and central North America during 2009? |
title_full |
What caused the cool summer over northern Central Asia, East Asia and central North America during 2009? |
title_fullStr |
What caused the cool summer over northern Central Asia, East Asia and central North America during 2009? |
title_full_unstemmed |
What caused the cool summer over northern Central Asia, East Asia and central North America during 2009? |
title_sort |
what caused the cool summer over northern central asia, east asia and central north america during 2009? |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1089.9226 http://iprc.soest.hawaii.edu/users/jylee/publication/3.%20Ha%20et%20al.%202012%20ERL.pdf |
geographic |
Arctic Indian Pacific |
geographic_facet |
Arctic Indian Pacific |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
http://iprc.soest.hawaii.edu/users/jylee/publication/3.%20Ha%20et%20al.%202012%20ERL.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1089.9226 http://iprc.soest.hawaii.edu/users/jylee/publication/3.%20Ha%20et%20al.%202012%20ERL.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766338785473200128 |