Published December 8, 2020 | Version v1
Dataset

Merikanto et al: How Asian aerosols impact regional surface temperatures across the globe, submitted to ACP; NorESM1 and ECHAM6.1 data

  • 1. Finnish Meteorological Institute

Description

Monthly gridded netcdf data from ECHAM6.1 and NorESM1 models using MacSP-v2 anthropogenic aerosol descriptions, including all nine anthropogenic aerosol plumes (files named "SP2005") or with South and East Asian aerosol plumes turned off (files named "NOASIA"). Both models used their intrinsic slab ocean configurations and background aerosols. Files contain last 60 years of climate model data from a 100-year equilibrium climate model run for current day climate. T_DECOMPOSITION -files contain calculated surface temperature responses associated with each energetic pathway (see original publication describing the method). The data has been regridded to the same resolution for both models, with 47 hybrid sigma pressure levels and, 144 latitudes and 96 longitudes (see mygrid -file). Variable names follow standard CMIP5 naming protocol in "RENAMED" files, which contain the energetic flux and temperature (+precipitation) data. "FORCING" files contain the top-of-atmosphere total (direct+indirect), direct and indirect forcing components due to removal of Asian aerosols, calculated online with double radiation calls during the climate runs.. Also, a python code "RY15" for the calculation of Taylor decomposition is included (the code works only for SW components, a more complete code for the full decomposition will be available shortly from Kalle Nordling!). Mantras with cdo commands for the calculation of LW, CONV and SURF components are provided in "mantras" file, which is meant to be used with separately available ECHAM radiative kernels (see mantras -file).

Main reference where data will be published and described: Merikanto, J., Nordling, K., Räisänen, P., Räisänen, J., O'Donnell, D., Partanen, A.I., and Korhonen, K.: How Asian aerosols impact regional surface temperatures across the globe, submitted to Atmos. Chem. Phys., 2020.

Additional references describing methods and climate model runs: Nordling, K., Korhonen, H., Räisänen, P., Alper, M. E., Uotila, P., O'Donnell, D., and Merikanto, J.: Role of climate model dynamics in estimated climate responses to anthropogenic aerosols, Atmos. Chem. Phys., 19, 9969–9987, https://doi.org/10.5194/acp-19-9969-2019, 2019. Räisänen, J.: An energy balance perspective on regional CO2-induced temperature changes in CMIP5 models. Clim. Dyn. 48:3441–3454, 2017.

Additional details

Identifiers

URL
https://etsin.fairdata.fi/dataset/2523d692-465b-435e-9411-27027016549c
B2SHARE Legacy Record ID
aa3085799bff4be798342e4c0d66caa3

FMI metadata

Geolocation
POLYGON ((0,0,360,180))
Coordinate reference system
latlon, 144 lons * 96 lats (see mygrid file)
Resolution
-1
Geolocation place
Global
Topic category
climatologyMeteorologyAtmosphere
Source data
ECHAM6.1 and NorESM1 climate models
Data levels (meter, hectoPascal, degree, sigma pressure levels, other) in vertical direction(+/-) for example 1500 m or 850 hPa
Level : 47
Level unit : sigma pressure levels (from toa to surface)
Parameter
Parameter name : tas
Parameter unit : K
Depiction : surface temperature
Parameter name : rsdt
Parameter unit : W/m**2
Depiction : top incoming solar radiation
Parameter name : rsut
Parameter unit : W/m**2
Depiction : top solar radiation upward
Parameter name : rlut
Parameter unit : W/m**2
Depiction : net top thermal radiation upward
Parameter name : rsds
Parameter unit : W/m**2
Depiction : surface solar radiation downward
Parameter name : rsus
Parameter unit : W/m**2
Depiction : surface solar radiation upward
Parameter name : rlds
Parameter unit : W/m**2
Depiction : surface thermal radiation downward
Parameter name : rlus
Parameter unit : W/m**2
Depiction : surface thermal radiation upward
Parameter name : hfls
Parameter unit : W/m**2
Depiction : latent heat flux
Parameter name : hfss
Parameter unit : W/m**2
Depiction : sensible heat flux
Parameter name : rsutcs
Parameter unit : W/m**2
Depiction : top solar radiation upward (clear sky)
Parameter name : rlutcs
Parameter unit : W/m**2
Depiction : net top thermal radiation upward (clear sky)
Parameter name : rsdscs
Parameter unit : W/m**2
Depiction : surface solar radiation downward (clear sky)
Parameter name : rsuscs
Parameter unit : W/m**2
Depiction : surface solar radiation upward (clear sky)
Parameter name : clt
Parameter unit : 1
Depiction : total cloud cover
Parameter name : pr
Parameter unit : kg/m**2s
Depiction : convective precipitation
Parameter name : prsn
Parameter unit : kg/m**2s
Depiction : snow fall
Parameter name : lnq
Parameter unit : kg/kg
Depiction : Natural logarithm of specific humidity
Parameter name : st
Parameter unit : K
Depiction : atmospheric temperature
Parameter name : aps
Parameter unit : Pa
Depiction : surface pressure
Parameter name : IRF_total
Parameter unit : W/m**2
Depiction : Instantaneous total aerosol radiative forcing due to removal of Asian aerosols
Parameter name : IRF_dir
Parameter unit : W/m**2
Depiction : Instantaneous direct aerosol forcing due to removal of Asian aerosols
Parameter name : IRF_indir
Parameter unit : W/m**2
Depiction : Instantaneous indirect aerosol forcing due to removal of Asian aerosols
Parameter name : DeltaT
Parameter unit : K
Depiction : 2m air temperature response to Asian aerosol removal
Parameter name : DeltaT_ALBEDO
Parameter unit : K
Depiction : 2m air temperature response due to change in surface albedo change
Parameter name : DeltaT_CONV
Parameter unit : K
Depiction : 2m air temperature response due to change in energy flux convergence
Parameter name : DeltaT_LW
Parameter unit : K
Depiction : 2m air temperature response due to change in total longwave radiation
Parameter name : DeltaT_LW_clr
Parameter unit : K
Depiction : 2m air temperature response due to change in clear-sky longwave radiation
Parameter name : DeltaT_LW_cld
Parameter unit : K
Depiction : 2m air temperature response due to change in cloud longwave radiation
Parameter name : DeltaT_LW_cor
Parameter unit : K
Depiction : Kernel correction to LW_cld and LW_clr
Parameter name : DeltaT_SW
Parameter unit : K
Depiction : 2m air temperature response due to change in total shortwave radiation
Parameter name : DeltaT_SW_clr
Parameter unit : K
Depiction : 2m air temperature response due to change in clear sky shortwave radiation
Parameter name : DeltaT_SW_cld
Parameter unit : K
Depiction : 2m air temperature response due to change cloud shortwave radiation
Parameter name : DeltaT_SW_nl
Parameter unit : K
Depiction : 2m air temperature response due to change residual shortwave radiation
Parameter name : D
Parameter unit : W/m**2/K
Depiction : Räisänen parameter