| Autor: |
Hall, Joanne V., Argueta, Fernanda, Zubkova, Maria, Chen, Yang, Randerson, James T., Giglio, Louis |
| Předmět: |
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| Zdroj: |
Earth System Science Data Discussions; 6/14/2023, p1-27, 27p |
| Abstrakt: |
Burned area estimates are an essential component of inventory-based fire emission calculations, and any inaccuracies in those estimates propagate into the final emission outputs. While satellite-based global burned area and fire emission datasets (e.g. GFED, FireCCI51, and MCD64A1) are frequently cited within the scientific literature and used by a range of users from atmospheric and carbon modelers to policy-makers, they are generally not optimized for cropland burning -- a quintessential small-fire type. Here we describe a new dataset (GloCAB; Global Cropland Area Burned) which 10 represents the first attempt at a global cropland-focused burned area product. The GloCAB dataset provides global, monthly cropland burned area at 0.25° spatial resolution from July 2002 -- December 2020. Crop-specific burned area conversion factors for several widespread burnable crops (winter wheat, spring wheat, maize, rice, and sugarcane) were calculated from extensively-mapped cropland reference regions spanning 190,650 fields over 5 different countries. We found global annual cropland burned area (2003 -- 2020) ranged between 64 Mha (2018) and 102 Mha (2008) with an average of 81 Mha using 15 our lower-bound estimates which are substantially higher than the annual average of 32 Mha in the MCD64A1 C6 product. Region-specific trend analysis found some areas with significant increasing trends (northwest India), while the heterogeneity of many other regions found no burned area trends. This cropland-focused burned area methodology is the first step toward improving the representation of global crop-residue burning emissions -- an often overlooked small-fire source of trace gas and aerosol emissions within global fire emission inventories. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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