GIEMS-MethaneCentric v1.1

The Global Inundation Extent from Multi-Satellites-MethaneCentric (GIEMS-MC) provides two harmonized times series maps at 0.25°x0.25° and monthly time step of wetland surfaces from 1992 to 2020: one representing inundated and saturated wetlands, and the other covering all wetlands, including peatlands. In addition, GIEMS-MC provides consistent 0.25°x0.25° maps of rice paddies (from MIRCA2000) and open permanent water categories (from GLWDv2) used in its production. Information on the dominant vegetation type and wetland type per pixel is also provided. GIEMS-MC v1.1 is the version used in related publication :Bernard, J., Prigent, C., Jimenez, C., Fluet-Chouinard, E., Lehner, B., Salmon, E., Ciais, P., Zhang, Z., Peng, S., and Saunois, M.: The GIEMS-MethaneCentric database: a dynamic and comprehensive global product of methane-emitting aquatic areas, Earth Syst. Sci. Data, 17, 2985–3008, https://doi.org/10.5194/essd-17-2985-2025, 2025. The differences between GIEMS-MC v1.1 and v1.0 are minor. These include the inclusion of Deltas in ancillary information and the correction of typos.多卫星甲烷中心全球淹没范围（Global Inundation Extent from Multi-Satellites-MethaneCentric，简称GIEMS-MC）提供了两套空间分辨率为0.25°×0.25°、时间步长为月度的经统一协调的湿地地表时间序列地图，时间跨度为1992年至2020年：其中一套表征淹没与饱和湿地，另一套覆盖包括泥炭地在内的所有湿地。此外，GIEMS-MC还提供了其生产过程中所用的稻田（源自MIRCA2000）与永久性开阔水域类别（源自GLWDv2）的一致0.25°×0.25°分辨率地图，同时还提供了每个像元的优势植被类型与湿地类型相关信息。 GIEMS-MC v1.1为相关发表文献所采用的版本：Bernard, J., Prigent, C., Jimenez, C., Fluet-Chouinard, E., Lehner, B., Salmon, E., Ciais, P., Zhang, Z., Peng, S., and Saunois, M.：《GIEMS-甲烷中心数据库：动态且全面的全球甲烷排放水生区域产品》，《地球系统科学数据》（Earth Syst. Sci. Data），17卷，2985–3008页，https://doi.org/10.5194/essd-17-2985-2025，2025年。 GIEMS-MC v1.1与v1.0之间的差异极小，仅在辅助信息中新增了三角洲相关内容并修正了排版错误。