GLOBAL2014-2017-final.zip

Using the MODIS 8-day surface reflectance data (MOD09Q1, MYD09Q1) from 2014 to 2017 and the improved global 30-meter FROM-GLC water layer in 2010, we have produced the data set for the typical global lakes (including Poyang Lake, Aral Sea, Lake Victoria and Lake Venant, the Great Lakes, Lake Titicaca and Lake Eyre) with 500 m resolution every 8 days from 2014 to 2017 by using the spectral characteristics of water body. The data range of this data set is 1-46. 1 indicates that the area has been flooded for 8 days in a year, 2 indicates that the area has been flooded for 16 days in a year and 46 indicates that the area has been flooded for the whole year. Larger data value indicates more flooded days.

本研究利用2014至2017年的MODIS 8日地表反射率数据（MOD09Q1、MYD09Q1）以及2010年改进的全球30米分辨率FROM-GLC水体图层，结合水体光谱特征，生成了2014-2017年每8日更新、分辨率500米的全球典型湖泊水体淹没数据集，涵盖鄱阳湖、咸海、维多利亚湖、韦南特湖、北美五大湖、的的喀喀湖与艾尔湖。该数据集的数值取值范围为1至46：其中1代表该像元年内累计被水淹没8天，2代表年内累计被淹16天，46则代表该像元全年均处于淹没状态；数值越大，代表年内累计被水淹没的天数越多。