Table 2-9 Table 2-9: Cloud-radiative interactions. The table lists the treatment of shortwave and longwave cloud-radiative interactions, whether these depend on (prognostic, diagnostic, or prescribed) cloud liquid water (CLW), and the assumption of cloud vertical overlap used in the radiation calculations (random, full, or mixed--both random and full, depending on cloud type or other factors). Hyperlinks connect to the summary report for each AMIP model version.

Model Version	Shortwave Interactions	Longwave Interactions	Function of CLW	Vertical Overlap
BMRC BMRC2.3 (R31 L9) 1990	optics prescribed by cloud height	all clouds are blackbody emitters		random
BMRC BMRC3.7 (R31 L17) 1995	optics prescribed by cloud height	all clouds are blackbody emitters		random
BMRC BMRC3.7.1 (R31 L17) 1995	optics prescribed by cloud height	all clouds are blackbody emitters		random
CCC GCMII (T32 L10) 1990	delta-Eddington	emissivity depends on optical depth	x	mixed
CCSR/NIES AGCM (T21 L20) 1995	optics depend on optical depth	emissivity depends on optical depth	x	mixed
CNRM EMERAUDE (T42 L30) 1992	delta-two-stream	delta-two-stream	x	random
CNRM ARPEGE Cy11 (T42 L30) 1995	delta-two-stream	delta-two-stream	x	random
COLA COLA1.1 (R40 L18) 1993	delta-Eddington	emissivity depends on optical depth	x	mixed
CSIRO CSIRO9 Mark 1 (R21 L9) 1992	optics prescribed by cloud height	all clouds are blackbody emitters		random
CSU CSU91 (4x5 L17) 1991	delta-Eddington	emissivity depends on optical depth	x	full
CSU CSU95 (4x5 L17) 1995	delta-Eddington, optics depend on CLW	emissivity depends on CLW	x	full
DERF GFDLSM392.2 (T42 L18) 1993	delta-Eddington	emissivity depends on optical depth	x	random
DERF GFDLSM195 (T42 L18) 1995	delta-Eddington	emissivity depends on optical depth	x	random
DNM A5407.V1 (4x5 L7) 1991	optics prescribed	emissivity < 1 for high cloud only		random
DNM A5407.V2 (4x5 L7) 1995	optics prescribed	emissivity < 1 for high cloud only		random
ECMWF ECMWF Cy36 (T42 L19) 1990	delta-Eddington	emissivity depends on CLW	x	mixed
GFDL CDG1 (R30 L14) 1992	optics depend on cloud height/depth	emissivity < 1 for high cloud only		full
GISS Model II Prime (4x5 L9)	application of Mie theory	self-consistent with Mie theory	x	full
GLA GCM-01.0 AMIP-01 (4x5 L17) 1992	delta-Eddington	emissivity depends on optical depth		random
GSFC GEOS-1 (4x5 L20) 1993	delta-Eddington	all clouds are blackbody emitters		mixed
IAP IAP-2L (4x5 L2) 1993	delta-Eddington	emissivity < 1 for cirrus cloud only		mixed
JMA GSM8911 (T42 L21) 1993	delta-Eddington	emissivity < 1 for cirrus cloud only		random
LLNL LLNL/UCLA MPP1 (4x5 L15) 1995	optics depend on cloud height/depth	emissivity depends on optical depth	x	full
LMD LMD5 (3.6x5.6 L11) 1991	delta-Eddington and two-stream	emissivity depends on CLW	x	random
LMD LMD6b (3.6x5.6 L11) 1995	delta-Eddington and two-stream	emissivity depends (differently) on CLW	x	random
LMD LMD6s (3.6x5.6 L11) 1995	delta-Eddington and two-stream	emissivity depends (differently) on CLW	x	random
MGO AMIP92 (T30 L14) 1992	optics prescribed	emissivity depends on temperature		mixed
MPI ECHAM3 (T42 L19) 1992	two-stream	emissivity depends on CLW	x	mixed
MPI ECHAM4 (T42 L19) 1995	application of Mie theory	emissivity depends on CLW	x	mixed
MRI GCM-II (4x5 L15) 1993	delta-Eddington	emissivity depends on optical depth		random
MRI GCM-IIb (4x5 L15) 1995	delta-Eddington	emissivity depends on optical depth		random
NCAR CCM2 (T42 L18) 1992	delta-Eddington	emissivity depends on fixed CLW	x	random
NMC MRF (T40 L18) 1992	optics prescribed by cloud height	emissivity < 1 for high cloud only		random
NRL NOGAPS3.2 (T47 L18) 1993	delta-Eddington	emissivity depends on temperature	x	mixed
NRL NOGAPS3.4 (T47 L18) 1995	delta-Eddington, increased single scattering albedo	emissivity depends on temperature	x	full
NTU GCM (T42 L13) 1995	optics prescribed by cloud type/height, CLW	emissivity of high cloud depends on CLW	x	random
RPN NWP-D40P29 (T63 L23) 1993	delta-Eddington	all clouds are blackbody emitters	x	full
SUNYA CCM1-TG (R15 L12) 1990	delta-Eddington	emissivity depends on CLW	x	random
SUNYA/NCAR GENESIS1.5 (T31 L18) 1994	delta-Eddington	emissivity depends on CLW	x	random
SUNYA/NCAR GENESIS1.5A (T31 L18) 1995	delta-Eddington (different from GENESIS1.5)	emissivity depends on CLW (different from GENESIS1.5)	x	random
UCLA AGCM6.4 (4x5 L15) 1992	optics depend on cloud height/depth	emissivity depends on optical depth	x	full
UGAMP UGCM1.3 (T42 L19) 1993	delta-Eddington	emissivity depends on CLW	x	mixed
UIUC MLAM-AMIP (4x5 L7) 1993	two-stream and delta-Eddington	emissivity depends on CLW	x	mixed
UKMO HADAM1 (2.5x3.75 L19) 1993	Practical Improved Flux Method	emissivity depends on CLW	x	mixed
YONU Tr5.1 (4x5 L5) 1994	two-stream and delta-Eddington	emissivity depends on CLW	x	mixed
YONU Tr7.1 (4x5 L7) 1995	two-stream and delta-Eddington	emissivity depends on CLW	x	mixed

Last update November 7, 1996. For further information, contact: Tom Phillips (phillips@tworks.llnl.gov)

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