Trends in Total Cloud Amount Over China (1951 - 1994)

These total cloud amount time series for China are derived from the work of Kaiser (1998). The cloud data were extracted from a database of 6-hourly weather observations provided by the National Climate Center of the China Meteorological Administration (CMA) to the U.S. Department of Energy's Carbon Dioxide Information Analysis Center (CDIAC) through a bilateral research agreement. Surface-observed (visual) six-hourly observations [0200, 0800, 1400, and 2000 Beijing Time (BT)] of cloud amount (0-10 tenths of sky cover) were available from 196 Chinese stations covering the period 1954-94. Data from 1951-1953 were also available; however, they only included 0800, 1400, and 2000 BT observations. For access to the data files, click this link to the CDIAC data transition website: http://cdiac.ess-dive.lbl.gov/trends/clouds/kaiser/kaiser98.html

本套中国区域总云量时间序列数据集源自Kaiser（1998）的研究工作。
本云量数据提取自一套逐6小时气象观测数据库，该数据库由中国气象局（China Meteorological Administration, CMA）国家气候中心通过双边科研合作协议，移交至美国能源部二氧化碳信息分析中心（Carbon Dioxide Information Analysis Center, CDIAC）。
1954年至1994年间，196个中国地面气象站可提供地面人工目视观测的逐6小时云量数据，观测时刻为北京时间（Beijing Time, BT）0200、0800、1400及2000时，云量以天空覆盖比例的0至10成进行量化。
1951年至1953年的观测数据同样可获取，但仅包含0800、1400及2000 BT三个时刻的观测记录。
如需获取数据文件，请点击以下链接跳转至CDIAC数据发布网站：http://cdiac.ess-dive.lbl.gov/trends/clouds/kaiser/kaiser98.html