Dust Constraints from joint Observational-Modelling-experiMental analysis – DustCOMM Version 2 Authors: Adeyemi A. Adebiyi, Jasper F. Kok, Yang Wang, Akinori Ito, David A. Ridley, Pierre Nabat, Chun Zhao ------------------------ Correspondng Authors: Adeyemi Adebiyi and Jasper Kok Department of Atmospheric and Oceanic Sciences, University of California Los Angeles, CA, USA Email: aadebiyi@ucla.edu and jfkok@ucla.edu ------------------------ Citations for this dataset: 1. Adebiyi, A. A. and Kok, J. F.: Climate models miss most of the coarse dust in the atmosphere, Sci. Adv., 6(15), eaaz9507, doi:10.1126/sciadv.aaz9507, 2020. 2. Adebiyi, A. A., Kok, J. F., Wang, Y., Ito, A., Ridley, D. A., Nabat, P., and Zhao, C.: Dust Constraints from joint Observational-Modelling-experiMental analysis (DustCOMM): comparison with measurements and model simulations, Atmos. Chem. Phys., 20, 829–863, https://doi.org/10.5194/acp-20-829-2020, 2020. ------------------------ This is the version-2 of DustCOMM dataset, containing seasonal climatologies of constrained dust aerosol properties, including spatially-varying dust size distribution, mass extinction efficiency, and atmospheric dust loading. Please be aware that there will be future versions of DustCOMM that incorporates more observational, modeling and experimental constraints. Please send an email to the corresponding authors if you have any question or would like to receive update of DustCOMM's future developments. This folder includes the constraints on dust properties for globally-averaged datasets (Adebiyi & Kok 2020) and those that vary spatially and seasonally. ------------------------ Global Constraints The dimensions are denoted as: Constrained_Atmospheric_dust_properties.nc - Dimension: [nboot, nD] D [202] -- Dust Geometric Diameter. Unit of microns. From 0.2-20 microns. nboot [10000] -- The different realizations calculated using Bootstrapping method ------------------------ Seasonally- and Spatially-varying Constraints In each of these files, we have included the mean, median, 1 and 2 sigma uncertainty estimates as a function of location. These uncertainty estimates are derived from probability distributions that describe the fields over each location. Please contact the corresponding authors if you are interested in the full dataset. The dimensions are denoted as: lon [144] -- Longitude. Unit of degrees_east. Global - 2.5 deg resolution. lat [96] -- Latitude. Unit of degrees_north. Global - ~2 deg resolution lev [35] -- Pressure levels. Unit of hPa. ~900 hPa to 100 hPa. Lower resolution in the boundary layer and higher resolution in the free troposphere. D [202] -- Dust Geometric Diameter. Unit of microns. From 0.2-20 microns. nseas [4] -- Seasons. They are DJF, MAM, JJA, and SON corresponding to December-January-February, March-April-May, June-July-August, and September-October-December respectively. -------- Dust_Size_Distr_dVdD_seasonal.nc - Dimension: [nseas, lon, lat, lev, D] -- DustCOMM seasonal climatologies of 3-D normalized dust (volume) size distribution. Fields include: -> dVdD_mean -- Mean Normalized Dust Volume Size Distribution -> dVdD_median -- Median Normalized Dust Volume Size Distribution -> dVdD_Pos1sig -- +1 Sigma Normalized Dust Volume Size Distribution -> dVdD_Neg1sig -- -1 Sigma Normalized Dust Volume Size Distribution -> dVdD_Pos2sig -- +2 Sigma Normalized Dust Volume Size Distribution -> dVdD_Neg2sig -- -2 Sigma Normalized Dust Volume Size Distribution -------- Dust_3D_MEE_seasonal.nc - Dimension: [nseas, lon, lat, lev] -- DustCOMM seasonal climatologies of 3-D dust mass extinction efficiency (m2/g). Fields include: -> MEE_mean -- Mean Dust 3D Mass Extinction Efficiency -> MEE_median -- Median Dust 3D Mass Extinction Efficiency -> MEE_Pos1sig -- +1 Sigma Dust 3D Mass Extinction Efficiency -> MEE_Neg1sig -- -1 Sigma Dust 3D Mass Extinction Efficiency -> MEE_Pos2sig -- +2 Sigma Dust 3D Mass Extinction Efficiency -> MEE_Neg2sig -- -2 Sigma Dust 3D Mass Extinction Efficiency -------- Dust_2D_MEE_seasonal.nc - Dimension: [nseas, lon, lat] -- DustCOMM seasonal climatologies of 2-D dust mass extinction efficiency (m2/g). Fields include: -> MEE_mean -- Mean Dust 2D Mass Extinction Efficiency -> MEE_median -- Median Dust 2D Mass Extinction Efficiency -> MEE_Pos1sig -- +1 Sigma Dust 2D Mass Extinction Efficiency -> MEE_Neg1sig -- -1 Sigma Dust 2D Mass Extinction Efficiency -> MEE_Pos2sig -- +2 Sigma Dust 2D Mass Extinction Efficiency -> MEE_Neg2sig -- -2 Sigma Dust 2D Mass Extinction Efficiency -------- Dust_Load_seasonal.nc - Dimension: [nseas, lon, lat] -- DustCOMM seasonal climatologies of 2-D atmospheric dust loading (g/m2). Fields include: -> Load_mean -- Mean Atmospheric Dust Loading -> Load_median -- Median Atmospheric Dust Loading -> Load_Pos1sig -- +1 Sigma Atmospheric Dust Loading -> Load_Neg1sig -- -1 Sigma Atmospheric Dust Loading -> Load_Pos2sig -- +2 Sigma Atmospheric Dust Loading -> Load_Neg2sig -- -2 Sigma Atmospheric Dust Loading ==========================