Goddard Space Flight Center. Mesoscale Dynamics and Modeling Group. Implementation of the Updated Goddard Longwave and Shortwave Radiation Packages in WRF. Toshi Matsui, Wei-Kuo Tao, and Roger Shi representing Goddard Mesoscale Dynamics and Modeling (GMDM) Group. WRF Dynamic Core.
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Mesoscale Dynamics and Modeling Group
Implementation of the Updated Goddard Longwave and Shortwave Radiation Packages in WRF
Toshi Matsui, Wei-Kuo Tao, and Roger Shi
Goddard Mesoscale Dynamics and Modeling (GMDM) Group
Diabatic Heating (dT/dt)
Goddard Chemistry and Aerosol Radiation Transport (GOCART)
Goddard Land Information System
Surface emission and albedo
Aerosol direct effect
Aerosol indirect effect
Cloud radiative forcing
Goddard MicrophysicsRole of Goddard Radiation in WRF
Chou M.-D., and M. J. Suarez, 1999: A solar radiation parameterization for atmospheric studies.
NASA Tech. Rep. NASA/TM-1999-10460, vol. 15, 38 pp
Chou M.-D., and M. J. Suarez, 2001: A thermal infrared radiation parameterization for atmospheric
studies. NASA/TM-2001-104606, vol. 19, 55pp
1) Optical depths for condensates (1st-order effect)
2) Radiative Transfer (2nd-ordereffect)
3) Molecular absorption (3rd-ordereffect)
Fast, Faster, Fastest!
i) 1-dimensionalized radiative transfer to skip nighttime computation, ii) removed redundant routines, and iii) added a new logical option (fast_overcast), and “fast_overcast =.true.” that uses a pre-computed look-up table for Fcloud/Fclear as a function of cloud albedo.
Goddard LW logical options
Each option (high or trace) costs about 0.6sec, thus the no-options experiment (R) save 1.2sec CPU time in comparison with the full-option experiment (RHT).
module_gocart_online.F (1997) Goddard SW radiation in WRFAerosol Direct Effect
GOCART global aerosol masses
Driver & Interface Module
ICESAT, and ground-based LIDAR
AVHRR,TRMM VIRS, MODIS, GOES, Multifilter Rotating Shadowband Radiometer (MFRSR), and etc.
TRMM PR, GPM DPR, CloudSat CPR, Millimeter Wavelength Cloud Radar (MMCR), W-Band (95 GHz) ARM Cloud Radar (WACR), and etc.
SSM/I, TRMM Microwave Imager, AMSR-E, AMSU, and MHS, ground-based Microwave Radiometer (MWR), Microwave Radiometer Profiler (MWRP), and etc.