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Atmosphere 2017, 8(3), 54;

Opposite Trends in Light Rain Days over Western and Eastern China from 1960 to 2014

State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
College of Grassland and Environment Sciences, Xinjiang Agricultural University, Urumqi 830052, China
University of Chinese Academy of Sciences, Beijing 100049, China
Author to whom correspondence should be addressed.
Academic Editor: Robert W. Talbot
Received: 22 December 2016 / Revised: 27 February 2017 / Accepted: 11 March 2017 / Published: 14 March 2017
(This article belongs to the Section Climatology and Meteorology)
View Full-Text   |   Download PDF [2672 KB, uploaded 14 March 2017]   |  


In this work, we examined spatial and temporal trends for light rain days based on daily precipitation measurements, obtained from 1960 to 2014, from 590 meteorological stations in China. For the analyzed time interval, light rain days over eastern China were determined to decrease by 0.23 days·year−1. In western China, they increased by 0.3 days·year−1. To detect underlying causes for changes in light rain days, lower-tropospheric relative humidity was set as a proxy for light rain days. We then calculated the respective impacts of lower-tropospheric temperature and specific humidity on changes in light rain days. A comparison of the contributions of temperature and specific humidity resulted in the identification of the main cause of changes. Our results indicated that increases in lower-tropospheric temperatures reduced light rain days over the entire country, while variations in specific humidity dominated regional differences for light rain day trends. View Full-Text
Keywords: warming; light rain; trends; relative humidity; specific humidity; China warming; light rain; trends; relative humidity; specific humidity; China

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Song, S.; Jing, C.; Hu, Z. Opposite Trends in Light Rain Days over Western and Eastern China from 1960 to 2014. Atmosphere 2017, 8, 54.

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