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Advances in Meteorology
Volume 2016, Article ID 6439276, 12 pages
http://dx.doi.org/10.1155/2016/6439276
Research Article

Cooling and Wetting Effects of Agricultural Development on Near-Surface Atmosphere over Northeast China

1State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
2Institute of Wetland Research, Chinese Academy of Forestry, No. 1 Dongxiaofu Road, Haidian District, Beijing 100091, China
3National Center of Efficient Irrigation Engineering and Technology Research, Beijing 100048, China

Received 16 August 2016; Revised 27 October 2016; Accepted 3 November 2016

Academic Editor: Zhenghui Xie

Copyright © 2016 Nana Zhao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The effects of agricultural development on observed changes in near-surface atmospheric temperature and moisture from 1960 to 2014 over Northeast China are evaluated using data from 109 meteorological stations. Cultivated land fraction (CF) within a 3 km radius of the meteorological station is used as a quantitative indicator of agricultural intensity. Stations with large CFs experience a less significant increase in air temperature, especially in daily maximum temperature () and a more rapid increase in vapor pressure () and relative humidity (RH) than stations with small CFs, especially during the main growing season (from May to September). Compared with the reference station group with , cooling effects during May to September in terms of daily mean, maximum, and minimum temperature by −0.067°C, −0.081°C, and −0.069°C per decade and wetting effects of May to September regarding by 0.075 hPa and RH by 0.56% per decade exist for the station group with . The cooling and wetting effects can be attributed to the agricultural development and thus should be considered when analyzing the near-surface atmospheric temperature and moisture records in Northeast China.