37.1 annual_surface_pm25_concentrations_1998_2018

	metadata_field
shortname	annual_surface_pm25_concentrations_1998_2018
title	annual_surface_pm25_concentrations_1998_2018
creator	Atmospheric Composition Analysis Group
contact_email	car.data@sydney.edu.au
abstract	Estimated global annual surface fine particulate matter (PM2.5) concentrations for 1998-2018. Aerosol optical depth (AOD) from the NASA MODIS C6.1, MISR v23, MAIAC C6, and SeaWiFS satellite products are combined and related to surface PM2.5 concentrations using geophysical relationships between surface (PM2.5) and AOD simulated by the GEOS-Chem chemical transport model. These estimates are subsequently calibrated to global ground-based observations of (PM2.5) from the World Health Organization using Geographically Weighted Regression (GWR). These estimates identify significant regional trends, as detailed in the reference below. These data are specifically associated with the publication Hammer, M. S.; van Donkelaar, A.; Li, C.; Lyapustin, A.; Sayer, A. M.; Hsu, N. C.; Levy, R. C.; Garay, M. J.; Kalashnikova, O. V.; Kahn, R. A.; Brauer, M.; Apte, J. S.; Henze, D. K.; Zhang, L.; Zhang, Q.; Ford, B.; Pierce, J. R.; and Martin, R. V., 2020, Global Estimates and Long-Term Trends of Fine Particulate Matter Concentrations (1998-2018)., Environ. Sci. Technol, doi: 10.1021/acs.est.0c01764. https://pubs.acs.org/doi/full/10.1021/acs.est.0c01764 For more information see http://fizz.phys.dal.ca/~atmos/martin/?page_id=140#V4.GL.03. As of 2021-12-03, moved to https://sites.wustl.edu/acag/datasets/surface-pm2-5/
additional_metadata	/home/public_share_data/ResearchData_CAR/Environment_General/Atmospheric_Composition_Analysis_Group/annual_surface_pm25_concentrations_1998_2018
alternate_identifier	https://cloud.car-dat.org/index.php/apps/files/?dir=/Environment_General/Atmospheric_Composition_Analysis_Group/annual_surface_pm25_concentrations_1998_2018
associated_party
access_rules	Access by request. Data are available to all members of CAR.
Recommended Citation	Atmospheric Composition Analysis Group (2020): Estimated global annual surface fine particulate matter (PM2.5) concentrations for other regions, 1998-2018. Washington University in St.Louis. (Dataset). https://sites.wustl.edu/acag/datasets/surface-pm2-5/ [accessed on 2023-12-01]. Downloaded from CARDAT https://cloud.car-dat.org/index.php/apps/files/?dir=/Environment_General/Atmospheric_Composition_Analysis_Group/annual_surface_pm25_concentrations_1998_2018
licence_code	other
accessibility	CAR