ISSN 1002-1027  CN 11-2952/G2

Acta scientiarum naturalium Universitatis Pekinensis

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Characteristics of Temperature and Humidity Profiles in the Boundary-Layer over Baiyangdian Wet Land in Late Summer Season

LIU Xinjian1, ZHANG Hongsheng1,2,3, SONG Xingzhuo1, KANG Ling1, CHEN Jiayi1, LI Aiguo2, HU Fei2   

  • Received:2006-03-27 Online:2007-01-20 Published:2007-01-20

Abstract: An experiment on heterogeneous underlying surface was conducted by Peking University and the Institute of Atmospheric Physics, Chinese Academy of Science (CAS), in Baiyangdian in September of 2005. High-precision humidity and temperature measurements were made at two different sites with underlying surfaces of land and water, respectively. Profiles of temperature and humidity were also studied. The results indicate that the structures of the atmospheric boundary layer (ABL) over Baiyangdian Wetland are different from that in other places, such as humidity and temperature inversion appears frequent. It is found that the ABL over the land surface has a lower temperature, shallower ABL depth, but higher humidity, compared with that over the lake site. The possible factors are the prevailing winds, energy budget and land-air interaction. This experiment also provide an opportunity to test the quality of humidity sensor and temperature sensor designed by Peking University.