Title :
Impact of 500hPa height field anomaly on precipitation and temperature change over arid central Asia over the past 100 years
Author :
Wang, Jinsong ; Wei, Feng
Author_Institution :
Key Lab. of Arid Climatic, Change & Reducing Disaster of Gansu Province, China Meteorol. Adm., Lanzhou, China
Abstract :
Based on the gridded monthly precipitation and temperature data, and the monthly 500hPa height field data, the influence of 500hPa height change on precipitation and temperature over arid central Asia is analyzed. The results show that the summer rainfall and temperature anomaly in arid central Asia relates largely to those of large-scale meridional circulation. The winter precipitation and temperature anomaly over arid central Asia is related mainly to the singularities of zonal circulations at extra-tropic area. The main large scale synoptic systems to influence the climate change of arid central Asia include Ural Mountains trough (ridge), west Pacific sub-tropic high and Arabia trough (ridge).
Keywords :
atmospheric movements; atmospheric temperature; climatology; rain; Arabia trough; Ural Mountains trough; arid central Asia; climate change; extratropic area; gridded monthly precipitation data; gridded monthly temperature data; height change; height field anomaly; height field data; large scale synoptic systems; large-scale meridional circulation; precipitation change; summer rainfall; temperature anomaly; temperature change; west Pacific subtropic high; winter precipitation; zonal circulations; Asia; Meteorology; Ocean temperature; Temperature distribution; Vectors; The anomaly of 500hPa height field; arid central Asia; change of precipitation and temperature; the past 100 years;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International
Conference_Location :
Munich
Print_ISBN :
978-1-4673-1160-1
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2012.6351423
