Longterm monthly means of cloud fractional cover 1971-2000

Maps of longterm mean monthly mean values of cloud fractional cover derived from ISCCP-DX data, SYNOP-data, SHIP-data and climate observations on a 0.25x0.25 degree grid, reference period 1971-2000, provided by WMO Regional Climate Centre (RCC) on Climate Monitoring该数据集为0.25°×0.25°格点分辨率下的云分数覆盖长期逐月平均值分布图，数据源自ISCCP-DX数据、SYNOP地面气象报告数据、SHIP船舶观测数据及气候观测资料，参考时段为1971-2000年，由世界气象组织（WMO）区域气候中心（RCC）通过气候监测项目提供。