ESA-CCI Driven Vertical Soil Moisture Profile (Root zone) Database (EDVSMPD) for Indian Mainland

The ‘ESA-CCI Driven Vertical Soil Moisture Profile (Root zone) Database (EDVSMPD) for Indian Mainland (EDVSMP)’ is soil moisture profile database at surface (~0-5 cm), 10, 20, 51 and 102 cm depths for Indian Mainland. It is developed by applying Statistical Soil Moisture Profile (SSMP) model (Pal et al., 2016; Pal and Maity, 2020) using the surface Soil Moisture (SM) product developed by Climate Change Initiative (CCI) program of the European Space Agency (ESA) (ESA-CCI) (Liu et al., 2012; Wagner et al., 2012, http://www.esa-soilmoisture-cci.org). The SSMP model is a spatially varying statistical framework that couples the memory and forcing of SM from the overlying layers and utilizes the information of Hydrologic Soil Groups (HSGs) that makes it spatially transferable. The model estimates SM at four depths i.e. 10, 20, 51 and 102 cm using the surface SM information (~ 0-5 cm) at daily scale for the time period of November 1, 1978 to December 31, 2014. The gridded, volumetric SM data (m3/m3) is available at 0.25×0.25° spatial resolution and the spatial extent of the data is 6°N to 38°N and 66°E to 98°E (latitude and longitude wise respectively).

《面向印度大陆的ESA-CCI驱动垂直土壤水分剖面（根区）数据库（EDVSMPD，简称EDVSMP）》是针对印度大陆的土壤水分剖面数据库，涵盖地表（约0~5 cm）、10 cm、20 cm、51 cm及102 cm深度的土壤水分数据。该数据库依托欧洲空间局（European Space Agency, ESA）气候变化倡议（Climate Change Initiative, CCI）项目（ESA-CCI，Liu等，2012；Wagner等，2012，http://www.esa-soilmoisture-cci.org）研发的地表土壤水分（Soil Moisture, SM）产品，结合统计土壤水分剖面（Statistical Soil Moisture Profile, SSMP）模型（Pal等，2016；Pal与Maity，2020）开发完成。SSMP模型属于空间变化的统计框架，耦合了上层土壤水分的记忆效应与强迫驱动项，并引入了水文土壤组（Hydrologic Soil Groups, HSGs）的相关信息，使得该模型具备空间可迁移性。该模型以日尺度为基准，基于地表（约0~5 cm）的土壤水分数据，估算得到10 cm、20 cm、51 cm及102 cm四个深度的土壤水分，数据时间跨度为1978年11月1日至2014年12月31日。该数据集为格点化体积土壤水分数据，单位为m³/m³，空间分辨率为0.25°×0.25°，空间覆盖范围为北纬6°至38°、东经66°至98°（分别对应纬度与经度范围）。