Abstract
We present the Fire Inventory from National Center for Atmospheric Research (NCAR) version 2.5 (FINNv2.5), a fire emissions inventory that provides publicly available emissions of trace gases and aerosols for various applications, including use in global and regional atmospheric chemistry modeling. FINNv2.5 includes numerous updates to the FINN version 1 framework to better represent burned area, vegetation burned, and chemicals emitted. Major changes include the use of active fire detections from the Visible Infrared Imaging Radiometer Suite (VIIRS) at 375m spatial resolution, which allows smaller fires to be included in the emissions processing. The calculation of burned area has been updated such that a more rigorous approach is used to aggregate fire detections, which better accounts for larger fires and enables using multiple satellite products simultaneously for emissions estimates. Fuel characterization and emissions factors have also been updated in FINNv2.5. Daily fire emissions for many trace gases and aerosols are determined for 2002-2019 (Moderate Resolution Imaging Spectroradiometer (MODIS)-only fire detections) and 2012-2019 (MODIS+VIIRS fire detections). The non-methane organic gas emissions are allocated to the species of several commonly used chemical mechanisms. We compare FINNv2.5 emissions against other widely used fire emissions inventories. The performance of FINNv2.5 emissions as inputs to a chemical transport model is assessed with satellite observations. Uncertainties in the emissions estimates remain, particularly in Africa and South America during August-October and in southeast and equatorial Asia in March and April. Recommendations for future evaluation and use are given.
| Original language | English |
|---|---|
| Pages (from-to) | 3873-3891 |
| Number of pages | 19 |
| Journal | Geoscientific Model Development |
| Volume | 16 |
| Issue number | 13 |
| DOIs | |
| State | Published - Jul 12 2023 |
Funding
The development of the FINNv2.5 model framework, the estimates, and the evaluation have been supported through several different funding sources, including the NOAA Climate Program Office (CPO; grant no. NA17OAR4310103), U.S. National Science Foundation (NSF; grant no. 1822406), and NASA (grant no. 80NSSC18K0681). Funding has also been provided by the Texas Air Quality Research Program (AQRP; project nos. 14-011 and 18-022) at The University of Texas at Austin through the Texas Emission Reduction Program and the Texas Commission on Environmental Quality (TCEQ). Support for most Cooperative Institute for Research in Environmental Sciences (CIRES) employees is from NOAA (grant nos. NA17OAR4320101 and NA22OAR4320151). Support for Kelley C. Barsanti was also from NOAA CPO (grant no. NA17OAR4310007). Robert Yokelson has been supported by the NSF (grant nos. AGS-1748266 and AGS-1349976), NOAA CPO (grant no. NA16OAR4310100), and NASA (grant no. NNX14AP45G). This material is based upon work supported by the National Center for Atmospheric Research, which is a major facility sponsored by the NSF (grant no. 1852977).
| Funders | Funder number |
|---|---|
| NNX14AP45G, AGS-1349976, NA17OAR4310007, NA16OAR4310100, AGS-1748266 | |
| 1822406 | |
| National Aeronautics and Space Administration | 14-011, 80NSSC18K0681, 18-022 |
| National Oceanic and Atmospheric Administration | NA17OAR4310103 |
| National Center for Atmospheric Research | 1852977 |
| University of Texas at Austin | |
| Cooperative Institute for Research in Environmental Sciences | NA22OAR4320151, NA17OAR4320101 |
