Effect of oceans to spring surface sensible heat flux over Tobetan Plateau and its influence to East China preciptation

Jin Rui; Qi Li; He Jinhai

doi:10.3969/j.issn.0253-4193.2016.05.008

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Jin Rui, Qi Li, He Jinhai. Effect of oceans to spring surface sensible heat flux over Tobetan Plateau and its influence to East China preciptation[J]. Haiyang Xuebao, 2016, 38(5): 83-95. doi: 10.3969/j.issn.0253-4193.2016.05.008

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Jin Rui, Qi Li, He Jinhai. Effect of oceans to spring surface sensible heat flux over Tobetan Plateau and its influence to East China preciptation[J]. Haiyang Xuebao, 2016, 38(5): 83-95. doi: 10.3969/j.issn.0253-4193.2016.05.008

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Effect of oceans to spring surface sensible heat flux over Tobetan Plateau and its influence to East China preciptation

doi: 10.3969/j.issn.0253-4193.2016.05.008

Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Joint International Research Laboratory of Climate and Environment Change, Key Laboratory of Meteorological Disaster, Ministry of EducationNanjing, University of Information Science and Technology, Nanjing 210044, China

Received Date: 2015-07-29

Abstract

Abstract

By using the surface sensible heat flux data of ERA-interim reanalysis,we researched the inter-annual variability of spring Tibetan Plateau (TP) surface sensible heat flux (TPSH) during the period of 1981 to 2010 as well as its connection to the sea surface temperature over different oceans, and such connection may affect the precipitation of East China. The main conclusions are as follows: (1) the two main modes of TPSH inter-annual variability are well associated with Pacific and India Ocean sea surface temperature (SST) separately. The middle and eastern tropical Pacific SST anomaly are affected by winter (DJF) ENSO signal which can stimulate a westward and poleward wave train to change the precipitation anomaly over the southern TP. Through this process,a zonal dipole SH distribution is formed as the first mode with a periodicity of 5 a. On the other hand, an across equator wave train was excited by the spring India Ocean SSTA tripole pattern. It may cause the east wind anomaly over TP, weakening the Background Westerly, causing an opposite SH distribution between body region of TP and the surrounding area with a periodicity of 5 a to 7 a. (2) The influence of ENSO SSTA over Pacific Ocean and the SSTA tripole pattern over spring India Ocean combined with the two modes of TP spring SH to the precipitation of East China are synergistic and it is found that TP spring SH have greater effect to spring precipitation at middle and higher latitudes.
- Tibetan Plateau,
- surface sensible heat flux,
- SST forcing response,
- Eastern Asian spring precipitation

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References(44)

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