Solar Radiative Transfer and Global Climate Modelling
| dc.contributor.advisor | Elfagd, Yitagesu (PhD) | |
| dc.contributor.author | Dagnaw, Habtam | |
| dc.date.accessioned | 2022-01-26T07:51:59Z | |
| dc.date.accessioned | 2023-11-09T11:26:41Z | |
| dc.date.available | 2022-01-26T07:51:59Z | |
| dc.date.available | 2023-11-09T11:26:41Z | |
| dc.date.issued | 2021-12-10 | |
| dc.description.abstract | In this project we have studied Solar radiative transfer and global climate modelling. We consider a parallel beam of electromagnetic radiation incident on a slab of thickness ds. As this radiation passes through the atmosphere it interacts and is being absorbed by the atmospheric gases, the continental lands and oceans and large water bodies. In this project work, we describe the optical depth or optical thickness, the intensity or spectral radiance, absorption, reflection, scattering of particles by applying Beer’s law or Lambert’s law. The intensity of the incident radiation decreases exponentially as a function of solar zenith angle, fraction of absorbers in the atmosphere, the scattering coefficient, scale height, altitude and density of the atmosphere. The absorption and emission of radiation by the atmospheric gases causes climate changes. More over the major climate system components (atmosphere, land surface, ocean, and sea ice), and their interactions are described using the basic equations that govern the atmosphere. These can be formulated as a set of seven equations with seven unknowns such as the three velocity components (u, v, w), the pressure p, the temperature T, the specific humidity q and the density _. These equations, solved numerically by computers, are used to produce our weather forecasts. While there are details about these equations which are uncertain (for example, how we parameterize processes smaller than the grid size of the models), the equations for the most part are accepted as fact. The radiation that passes through the atmosphere is absorbed by the lands and ocean surfaces and is re-emitted as infrared back into the atmosphere so as to heat it and this causes climatic changes. | en_US |
| dc.identifier.uri | http://10.90.10.223:4000/handle/123456789/29683 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Solar | en_US |
| dc.subject | Radiative Transfer | en_US |
| dc.subject | Global | en_US |
| dc.subject | Climate Modelling | en_US |
| dc.title | Solar Radiative Transfer and Global Climate Modelling | en_US |
| dc.type | Thesis | en_US |