DOI: 10.18738/t8/pnei6t
title: Absence of Aerosol Indirect Effect Dependence on Background Climate State in NCAR CESM2

description: This directory contains metadata utilized in [cication] Absence of Aerosol Indirect Effect Dependence on Background Climate State in CESM2.

Questions can be directed to the corresponding author at kaylaw@utexas.edu


Structure of F (ATMOSPHERE-ONLY SIMULATION) file names:

[Variable].b.e21.F1850.f19.f19.mg17.001.mon.001-60.nc = 1850 SSTs with all forcings set at 1850 levels

[Variable].b.e21.F1850.f19.f19.mg17.001.aerosol2000.mon.001-60.nc = 1850 SSTs with all other forcings set at 1850 levels, and 2000 aerosol emissions

[Variable].b.e21.F2000.f19.f19.mg17.001.mon.001-60.nc = 2000 SSTs with all forcings set at 2000 levels

[Variable].b.e21.F2000.f19.f19.mg17.001.aerosol1850.mon.001-60.nc = 2000 SSTs with all other forcings set at 2000 levels, and 1850 aerosol emissions

[Variable].b.e21.F2000.f19.f19.mg17.001.aerosol1850.add4k.mon.001-60.nc = 2000+4K SSTs with all other forcings set at 2000 levels, and 1850 aerosol emissions

[Variable].b.e21.F2000.f19.f19.mg17.001.add4k.mon.001-60.nc = 2000+4K SSTs with all other forcings set at 2000 levels, and 2000 aerosol emissions



Files contain the monthly, 60-year time-series for a single variable. For analysis, the first 20 years are considered to be the model equilibrated period. Years 20-60 are used for the equilibrated signal.

Variables:
AODABSdn = 2D Aerosol absorption optical depth 550 nm, day night
AODVISdn = 2D Aerosol optical depth 550 nm, day night
AREL = 3D Average droplet effective radius
BURDENBCdn = 2D Black carbon aerosol burden, day night
BURDENDUSTdn = 2D Dust aerosol burden, day night
BURDENPOMdn = 2D POM aerosol burden, day night
BURDENSEASALTdn = 2D Seasalt aerosol burden, day night
BURDENSO4dn = 2D Sulfate aerosol burden, day night
BURDENSOAdn = 2D SOA aerosol burden, day night
CAPE = 2D Convectively available potential energy
CCN3 = 3D CCN concentration at S=0.1%
CDNUMC = 2D Vertically-integrated droplet concentration
CLDHGH = 2D Vertically-integrated high cloud
CLDLOW = 2D Vertically-integrated low cloud
CLDMED = 2D Vertically-integrated mid-level cloud
CLDTOT = 2D Vertically-integrated total cloud
CLOUD = 3D Cloud fraction
FLNT = 2D Net longwave flux at top of model
FLNTC = 2D Clearsky net longwave flux at top of model
FREQS = 3D Fractional occurrence of snow
FSDS = 2D Downwelling solar flux at surface
FSNS = 2D Net solar flux at surface
FSNT = 2D Net solar flux at top of model
FSNTC = 2D Clearsky net solar flux at top of model
FSUTOA = 2D Upwelling solar flux at top of atmosphere
ICEFRAC = 2D Fraction of sfc area covered by sea-ice
LHFLX = 2D Surface latent heat flux
LWCF = 2D Longwave cloud forcing
OMEGA = 3D Vertical velocity (pressure)
PRECC = 2D Convective precipitation rate (liq + ice)
PRECL = 2D Large-scale (stable) precipitation rate (liq + ice)
PRECSC = 2D Convective snow rate (water equivalent)
PRECSL = 2D Large-scale (stable) snow rate (water equivalent)
PS = 2D Surface pressure
Q = 3D Specific humidity
RELHUM = 3D Relative humidity
SHFLX = 2D Surface sensible heat flux
SSAVIS = 2D Aerosol single-scatter albedo, day only
SST = 2D Sea surface temperature
SWCF = 2D Shortwave cloud forcing
T = 3D Temperature
TGCLDCWP = 2D Total grid-box cloud water path (liquid and ice)
TGCLDIWP = 2D Total grid-box cloud ice water path
TGCLDLWP = 2D Total grid-box cloud liquid water path
TREFHT = 2D Reference height temperature
Z3 = 3D Geopotential Height (above sea level)


Background climate simulations with 2-dimensional variables are grouped by variable type and uploaded in a .tar file that contains all 4 background climate simulations for the given variable

Background climate simulations with 3-dimensional variables are uploaded individually due to size.