Impact of surface albedo and vegetation on the response of the LLN climate model to the astranomical forcing

Abstract

The main purpose and aim of this study is to simúlate the climate impacts of land surface albedo change induced by anthropogenic activity between 0 AD and pre-industrial Era, using LLN 2D climate model - MoBidiC. The reason why this topic was chosen is that first, human activities have changed the land surface significantly. Theoretically, by switching between different vegetation and land use forms, Earth’s surface radiation balance (land surface albedo) henee the energy received by the Earth can be altered significantly, which results Earth’s climate change. Second, the climatic effect of the vegetation has long been proposed, but its importance in climate formation and in climate change has not been fully understood (Otterman, 1977; Sagatí et al, 1979; Potter et al, 1981; Showstack, 2001). Third, vegetation clearing for agriculture practice is the only discemable anthropogenic impact on natural environment before Industrial Revolution.Doctorat en sciences (sciences géographiques) (GEOG 3)--UCL, 200