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Proceedings Paper

A study on sleet and freezing disaster at the beginning of 2008 with meteorological satellite data
Author(s): Xiaojing Wu; Ronghui Cai; Zhiqiang Cao; Deming Jiang
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Paper Abstract

At the beginning of 2008, South of China experienced a disastrous low temperature, rain, snow, ice and sleet weather that is rare in the history. There are characteristics of abnormal circulation background and inevitable rule in this event, with the satellite data we try to find out the weather and climate reasons. This low temperature, rain, snow, ice and sleet event happened in the background of warm winter. Since the 1980s, the global temperature rose 0.6+0.2°C[1], while China has continuously witnessed 21 warm winters since the winter of 1986/1987 and the trend of cold wave showed a decrease situation. Since last summer, La Nina enhanced gradually, in Jan 2008, SST of mid east Pacific was 2°C higher than the average and La Nina hit its climax. The low temperature, rain, snow, ice and sleet event is an abnormal weather occurred in the abnormal climate background. According to the statistics of observation conducted by National Climate Center, during this event (Jan. 10- Feb. 3, 2008), the precipitation anomaly was 50% higher than the normal in mid and east part of south to Yangtze River, most part of south China, east and south part of southwest China, and that is 20% higher than the normal in mid and west part of south China, mid and north of Yunnan province, south of Sichuan province, while in the areas of north Guizhou province, northwest Hunan province, southwest Hubei province and Chongqing autonomous region, the precipitation was less than the average. The temperature in the areas such as mid and west of south to Yangtze River, mid and west of south China, east of southwest China was 2°C lower than the average and that in mid and east of Hubei province, most of Hunan and Guizhou provinces, north of Guangxi autonomous region was more than 4°C lower than the average. The freezing in the regions such as most of Hunan and Guizhou provinces, northwest of Jiangxi 10 lasted days, and in some parts exceeded 15 days, all above are extraordinary in the history. Using the data of Chinese FY2C meteorological satellite, with the products of NCEP, the satellite image features were investigated in this paper.

Paper Details

Date Published: 3 December 2008
PDF: 10 pages
Proc. SPIE 7148, Remote Sensing and Modeling of the Atmosphere, Oceans, and Interactions II, 714805 (3 December 2008); doi: 10.1117/12.804718
Show Author Affiliations
Xiaojing Wu, National Satellite Meteorological Ctr. (China)
Ronghui Cai, Hunan Meteorological Bureau (China)
Zhiqiang Cao, National Satellite Meteorological Ctr. (China)
Deming Jiang, Hunan Meteorological Bureau (China)


Published in SPIE Proceedings Vol. 7148:
Remote Sensing and Modeling of the Atmosphere, Oceans, and Interactions II
Tiruvalam N. Krishnamurti; B. N. Goswami; Akiyo Yatagai, Editor(s)

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