Assessment of Biogenic Terpenoid Emission Inventories in Asia using Remotely Sensed Spatial and Temporal Surrogate Data

Abstract:

Among biogenic volatile organic compound (BVOC) species, the most comprehensively studied species are isoprene and monoterpene (terpenoid) due to their significant impacts on global and regional total VOC emission budget and ozone and aerosol formation mechanisms. Biogenic terpenoid emission inventories have been often assessed on a global basis and consistently available on model grid system units to support climate and chemical transport modeling. However, little of these have been assessed based on the political units such as countries and provinces. On the basis of political boundaries in Asia, we assembled and compared a large number of terpenoid emission estimates including currently published or reported sources. We assessed these terpenoid emission estimates in the context of the spatial and temporal consistency. Since the biogenic terpenoid emission inventories commonly use leaf biomass density, solar radiation and temperature as driving variables, we used the MODIS Gross Primary Productivity (GPP) and Land Surface Temperature (LST) datasets as surrogates to correlate with the terpenoid emission estimates in Asia. Based on our current assessment, we will discuss about the current status of the biogenic terpenoid emission inventories in Asia.