Terrestrial Sciences

Net Eco System productivity –GIMMS

The Carnegie-Ames-Stanford Approach (CASA) terrestrial ecosystem model is implemented for simulating long-term monthly Net Primary Productivity (NPP), Net Ecosystem Productivity (NEP), Soil Respiration, Soil Organic Content and associated CO2 exchange parameters between India terrestrial ecosystem and atmosphere at 5 km grids during 1981-2006.

This model is driven by time varying normalized difference vegetation index (NDVI), climate parameters (air-temperature, precipitation, solar radiation) and land cover and soil attribute maps. Besides that a number biome-specific parameters (such as Light Use Efficiency, C/N ratio) in the model are tuned to the values for accounting regional heterogeneity of the ecosystem response accurately. NPP and NEP products were analyzed for understanding seasonal, inter-annual and climatic variability of these parameters over India and published in the following references.

Net Ecosystem Productivity derived from GIMMS datasets is hosted on Bhuvan-NEP-GIMMS

Select NICES Project – Terrestrial Sciences – Net Ecosystem productivity –GIMMS .Technical Document(hyper link :Net Productivity)