Abstract Radiative transfer models are widely applied in climate to simulate vertical temperature perturbations caused by external radiative forcings. A large part of is the infrared gaseous spectral transmittance scheme, which quantifies longwave atmospheric absorption. rapid called Optimized alternate Mapping Correlated K‐Distribution model (OMCKD), introduced this paper. To improve accuracy ...

Increases in anthropogenic aerosols in the atmosphere tend to increase the reflectance of solar (shortwave) radiation from water clouds, which can lead to lower surface temperatures. Here an opposing effect whereby aerosols increase the longwave emissivity of thin clouds that adds to the warming of the earth’s surface, is discussed. The latter effect may be particularly important in the Arctic,...

The purpose of this study is to propose a new outdoor thermal index that simultaneously indicates universal and separate effects. The value indicating universal effect in this index consists of the summation of air temperature and the effective temperature differences by air velocity, longwave radiation, solar radiation, and humidity. This paper describes the theoretical construction of this ne...

Solitons are ubiquitous and exist in almost every area from sky to bottom. For solitons to appear, the relevant equation of motion must be nonlinear. In the present study, we deal with the Korteweg-deVries (KdV), Modied Korteweg-de Vries (mKdV) and Regularised LongWave (RLW) equations using Homotopy Perturbation method (HPM). The algorithm makes use of the HPM to determine the initial expansion...

The results from the Intercomparison of Radiation Codes Used in Climate Models (ICRCCM) (Ellingson et al. 1991) showed about ±2% differences in flux calculations between the narrowband models and line-by-bine models. Narrowband and broadband model calculations of downwelling radiance showed similar discrepancies with observations from the SPECTral Radiation Experiment (SPECTRE, see Ellingson an...

Several authors have suggested the possibility of utilizing measurements of spectrally resolved outgoing longwave radiation (OLR) to monitor the climatic state (e.g. Goody et al., 1998). The idea is attractive since even a moderate degree of spectral resolution allows the assignation of changes seen in the OLR to a particular cause. However, its practical implementation has been hampered by a l...

Marine boundary layer (BL) clouds profoundly influence the global shortwave (SW) radiation budget through their effect on albedo, but a significant source of turbulent energy to the BL and the clouds themselves is longwave (LW) cloud top cooling. Cloudy regions can be thought of as radiating as blackbodies in the LW, with a net radiative flux of nearly zero inside the cloud itself and a signifi...