| Changes in Seasonal Patterns of Temperature and Precipitation in China During 1971-2000 |
| |
| 作者姓名： | 宋连春 |
| |
| 作者单位： | [1]Institue of Arid Meteorology, China Meteorological Administration, Lanzhou 730000 [2]Department of Earth and Ocean Sciences, University of British Columbia, Vancouver, British Columbia V6T 1Z2, Canada [3]Meteorological Service of Canada, Environment Canada, #201 401 Burrard Street, Vancouver, British Columbia V6C 3S5, Canada |
| |
| 摘 要： | Many studies have shown evidence for significant changes in surface climate in different regions of the world and during different seasons over the past 100 years. Based on daily temperature and precipitation data from 720 climate stations in China, cluster analysis was used to identify regions in China that have experienced similar changes in the seasonal cycle of temperature and precipitation during the 1971-2000 climate normal period. Differences in 11-day averages of daily mean temperature and total precipitation between the first （1971-1985） and second （1986-2000） halves of the record were analyzed using the Mann- Whitney U test and the global κ-means clustering algorithm. Results show that most parts of China experienced significant increases in temperature between the two periods, especially in winter, although some of this warming may be attributable to the urban heat island effect in large cities. Most of western China experienced more precipitation in 1986-2000, while precipitation decreased in the Yellow River valley. Changes in the summer monsoon were also evident, with decreases in precipitation during the onset and decay phases, and increases during the wettest period.
|
| 关 键 词： | 20世纪末叶 中国 温度 降水 季节性模式 变化趋势 |
| 收稿时间： | 2005-08-04 |
| 修稿时间： | 2006-09-27 |
Changes in seasonal patterns of temperature and precipitation in China during 1971–2000 |
| |
| Song?Lianchun,A.?J.?Cannon,P.?H.?Whitfield.Changes in Seasonal Patterns of Temperature and Precipitation in China During 1971-2000[J].Advances in Atmospheric Sciences,2007,24(3):459-473. |
| |
| Authors: | Song Lianchun A J Cannon P H Whitfield |
| |
| Institution: | Institue of Arid Meteorology, China Meteorological Administration, Lanzhou 730000,Department of Earth and Ocean Sciences, University of British Columbia,
Vancouver, British Columbia V6T 1Z2, Canada; Meteorological Service of Canada, Environment Canada, 201--401 Burrard Street, Vancouver,
British Columbia V6C 3S5, Canada,Meteorological Service of Canada, Environment Canada, 201--401 Burrard Street, Vancouver,
British Columbia V6C 3S5, Canada |
| |
| Abstract: | Many studies have shown evidence for significant changes in surface climate in different regions of the world and during different seasons over the past 100 years. Based on daily temperature and precipitation data from 720 climate stations in China, cluster analysis was used to identify regions in China that have experienced similar changes in the seasonal cycle of temperature and precipitation during the 1971-2000 climate normal period. Differences in 11-day averages of daily mean temperature and total precipitation between the first (1971-1985) and second (1986-2000) halves of the record were analyzed using the MannWhitney U test and the global k-means clustering algorithm. Results show that most parts of China experienced significant increases in temperature between the two periods, especially in winter, although some of this warming may be attributable to the urban heat island effect in large cities. Most of western China experienced more precipitation in 1986-2000, while precipitation decreased in the Yellow River valley.Changes in the summer monsoon were also evident, with decreases in precipitation during the onset and decay phases, and increases during the wettest period. |
| |
| Keywords: | k-means clustering seasonality trends temperature precipitation China |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ |
| 点击此处可从《大气科学进展》浏览原始摘要信息 |
| 点击此处可从《大气科学进展》下载免费的PDF全文 |
|
