Recent Climatic Change in the World's Drylands

摘要: Precipitation and temperature trends in nine dryland regions are analysed for the period 1900 to 1994. No widespread desiccation climates is found, African Sahel being only region demonstrate a significant drying trend. All have warmed, however, with majority of warming probably unrelated regional effects. This may contributed worsening P/PE ratio many these regions. Three alone showing negative correlation between precipitation temperature, contrasting relationship global land areas warmer years/decades also wetter years/decades. The relative lack noted increased atmospheric dust resulting from suggested as possible explanation.