The Linkage between the Eastern Pacific Teleconnection Pattern and Convective Heating over the Tropical Western Pacific
The eastern Pacific (EP) pattern is a recently detected atmospheric teleconnection pattern that frequently occurs during late winter. Through analysis of daily ERA-Interim data and outgoing longwave radiation data for the period of 1979-2011, it is shown here that the formation of the EP is preceded...
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ftpekinguniv:oai:localhost:20.500.11897/418736 2023-05-15T18:49:01+02:00 The Linkage between the Eastern Pacific Teleconnection Pattern and Convective Heating over the Tropical Western Pacific Tan, Benkui Yuan, Jiacan Dai, Ying Feldstein, Steven B. Lee, Sukyoung Tan, BK (reprint author), Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Yiheyuan Rd 5, Beijing 100871, Peoples R China. Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Beijing 100871, Peoples R China. Penn State Univ, Dept Meteorol, University Pk, PA 16802 USA. Seoul Natl Univ, Sch Earth & Environm Sci, Seoul, South Korea. Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Yiheyuan Rd 5, Beijing 100871, Peoples R China. 2015 https://hdl.handle.net/20.500.11897/418736 https://doi.org/10.1175/JCLI-D-14-00568.1 en eng JOURNAL OF CLIMATE JOURNAL OF CLIMATE.2015,28,(14),5783-5794. 1299997 0894-8755 http://hdl.handle.net/20.500.11897/418736 1520-0442 doi:10.1175/JCLI-D-14-00568.1 WOS:000359637800016 EI SCI NORTHERN-HEMISPHERE WINTER MADDEN-JULIAN OSCILLATION ATMOSPHERIC CIRCULATION WAVE-PROPAGATION STORM TRACKS VARIABILITY FLOW CONTINUUM IMPACT JET Journal 2015 ftpekinguniv https://doi.org/20.500.11897/418736 https://doi.org/10.1175/JCLI-D-14-00568.1 2021-08-01T10:37:06Z The eastern Pacific (EP) pattern is a recently detected atmospheric teleconnection pattern that frequently occurs during late winter. Through analysis of daily ERA-Interim data and outgoing longwave radiation data for the period of 1979-2011, it is shown here that the formation of the EP is preceded by an anomalous tropical convection dipole, with one extremum located over the eastern Indian Ocean-Maritime Continent and the other over the central Pacific. This is followed by the excitation of two quasi-stationary Rossby wave trains. Departing from the subtropics, north of the region of anomalous convection, one Rossby wave train propagates eastward along the East Asian jet from southern China toward the eastern Pacific. The second wave train propagates northward from east of Japan toward eastern Siberia and then turns southeastward to the Gulf of Alaska. Both wave trains are associated with wave activity flux convergence where the EP pattern develops. The results from an examination of the E vector suggest that the EP undergoes further growth with the aid of positive feedback from high-frequency transient eddies. The frequency of occurrence of the dipole convection anomaly increases significantly from early to late winter, a finding that suggests that it is the seasonal change in the convection anomaly that accounts for the EP being more dominant in late winter. Chinese NSF [41130962, 41375060]; China Postdoctoral Science Foundation [2013M540014]; National Science Foundation [AGS-1139970, AGS-1036858, AGS-1401220]; National Oceanic and Atmospheric Administration Grant [NA14OAR4310190] SCI(E) EI ARTICLE bktan@pku.edu.cn 14 5783-5794 28 Journal/Newspaper Alaska Siberia Peking University Institutional Repository (PKU IR) Gulf of Alaska Indian Pacific Journal of Climate 28 14 5783 5794 |
institution |
Open Polar |
collection |
Peking University Institutional Repository (PKU IR) |
op_collection_id |
ftpekinguniv |
language |
English |
topic |
NORTHERN-HEMISPHERE WINTER MADDEN-JULIAN OSCILLATION ATMOSPHERIC CIRCULATION WAVE-PROPAGATION STORM TRACKS VARIABILITY FLOW CONTINUUM IMPACT JET |
spellingShingle |
NORTHERN-HEMISPHERE WINTER MADDEN-JULIAN OSCILLATION ATMOSPHERIC CIRCULATION WAVE-PROPAGATION STORM TRACKS VARIABILITY FLOW CONTINUUM IMPACT JET Tan, Benkui Yuan, Jiacan Dai, Ying Feldstein, Steven B. Lee, Sukyoung The Linkage between the Eastern Pacific Teleconnection Pattern and Convective Heating over the Tropical Western Pacific |
topic_facet |
NORTHERN-HEMISPHERE WINTER MADDEN-JULIAN OSCILLATION ATMOSPHERIC CIRCULATION WAVE-PROPAGATION STORM TRACKS VARIABILITY FLOW CONTINUUM IMPACT JET |
description |
The eastern Pacific (EP) pattern is a recently detected atmospheric teleconnection pattern that frequently occurs during late winter. Through analysis of daily ERA-Interim data and outgoing longwave radiation data for the period of 1979-2011, it is shown here that the formation of the EP is preceded by an anomalous tropical convection dipole, with one extremum located over the eastern Indian Ocean-Maritime Continent and the other over the central Pacific. This is followed by the excitation of two quasi-stationary Rossby wave trains. Departing from the subtropics, north of the region of anomalous convection, one Rossby wave train propagates eastward along the East Asian jet from southern China toward the eastern Pacific. The second wave train propagates northward from east of Japan toward eastern Siberia and then turns southeastward to the Gulf of Alaska. Both wave trains are associated with wave activity flux convergence where the EP pattern develops. The results from an examination of the E vector suggest that the EP undergoes further growth with the aid of positive feedback from high-frequency transient eddies. The frequency of occurrence of the dipole convection anomaly increases significantly from early to late winter, a finding that suggests that it is the seasonal change in the convection anomaly that accounts for the EP being more dominant in late winter. Chinese NSF [41130962, 41375060]; China Postdoctoral Science Foundation [2013M540014]; National Science Foundation [AGS-1139970, AGS-1036858, AGS-1401220]; National Oceanic and Atmospheric Administration Grant [NA14OAR4310190] SCI(E) EI ARTICLE bktan@pku.edu.cn 14 5783-5794 28 |
author2 |
Tan, BK (reprint author), Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Yiheyuan Rd 5, Beijing 100871, Peoples R China. Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Beijing 100871, Peoples R China. Penn State Univ, Dept Meteorol, University Pk, PA 16802 USA. Seoul Natl Univ, Sch Earth & Environm Sci, Seoul, South Korea. Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Yiheyuan Rd 5, Beijing 100871, Peoples R China. |
format |
Journal/Newspaper |
author |
Tan, Benkui Yuan, Jiacan Dai, Ying Feldstein, Steven B. Lee, Sukyoung |
author_facet |
Tan, Benkui Yuan, Jiacan Dai, Ying Feldstein, Steven B. Lee, Sukyoung |
author_sort |
Tan, Benkui |
title |
The Linkage between the Eastern Pacific Teleconnection Pattern and Convective Heating over the Tropical Western Pacific |
title_short |
The Linkage between the Eastern Pacific Teleconnection Pattern and Convective Heating over the Tropical Western Pacific |
title_full |
The Linkage between the Eastern Pacific Teleconnection Pattern and Convective Heating over the Tropical Western Pacific |
title_fullStr |
The Linkage between the Eastern Pacific Teleconnection Pattern and Convective Heating over the Tropical Western Pacific |
title_full_unstemmed |
The Linkage between the Eastern Pacific Teleconnection Pattern and Convective Heating over the Tropical Western Pacific |
title_sort |
linkage between the eastern pacific teleconnection pattern and convective heating over the tropical western pacific |
publisher |
JOURNAL OF CLIMATE |
publishDate |
2015 |
url |
https://hdl.handle.net/20.500.11897/418736 https://doi.org/10.1175/JCLI-D-14-00568.1 |
geographic |
Gulf of Alaska Indian Pacific |
geographic_facet |
Gulf of Alaska Indian Pacific |
genre |
Alaska Siberia |
genre_facet |
Alaska Siberia |
op_source |
EI SCI |
op_relation |
JOURNAL OF CLIMATE.2015,28,(14),5783-5794. 1299997 0894-8755 http://hdl.handle.net/20.500.11897/418736 1520-0442 doi:10.1175/JCLI-D-14-00568.1 WOS:000359637800016 |
op_doi |
https://doi.org/20.500.11897/418736 https://doi.org/10.1175/JCLI-D-14-00568.1 |
container_title |
Journal of Climate |
container_volume |
28 |
container_issue |
14 |
container_start_page |
5783 |
op_container_end_page |
5794 |
_version_ |
1766242450729336832 |