Influence of Sea Level Pressure on Inter-Annual Rainfall Variability in Northern Senegal in the Context of Climate Change  

作　　者：Aichetou Dia-Diop Malick Wade Sinclaire Zebaze Abdoulaye Bouya Diop Eric Efon Andre Lenouo Bouya Diop Aichetou Dia-Diop;Malick Wade;Sinclaire Zebaze;Abdoulaye Bouya Diop;Eric Efon;Andre Lenouo;Bouya Diop(Laboratoire des Sciences de l’Atmosphère et des Océans—Matériaux-énergie-Dispositifs (LSAO-MED), Université Gaston Berger, Saint-Louis, Sénégal;Department of Physics, Faculty of Science, University of Yaoundé 1, Yaoundé, Cameroon;Department of Physics, Faculty of Science, University of Bamenda, Bamenda, Cameroon)

机构地区：[1]Laboratoire des Sciences de l’Atmosphère et des Océans—Matériaux-énergie-Dispositifs (LSAO-MED), Université Gaston Berger, Saint-Louis, Sénégal [2]Department of Physics, Faculty of Science, University of Yaoundé 1, Yaoundé, Cameroon [3]Department of Physics, Faculty of Science, University of Bamenda, Bamenda, Cameroon

出　　处：《Atmospheric and Climate Sciences》2022年第1期113-131,共19页大气和气候科学（英文）

摘　　要：This study examines the inter-annual variability of rainfall and Mean Sea Level Pressure (</span><span style="font-family:Verdana;">M</span><span style="font-family:Verdana;">SLP) over west Africa based on analysis of the Global Precipitation</span><span style="font-family:""><span style="font-family:Verdana;"> Climatology Project (GPCP) and National Center for Environmental Prediction/National Center for Atmospheric Research (NCEP/NCAR) Reanalysis respectively. An interconnection is found in this region, between Mean Sea Level Pressure (MSLP) anomaly (over Azores and St. Helena High) and monthly mean precipitation during summer (June to September: JJAS). We also found that over northern Senegal (15</span><span style="white-space:nowrap;font-family:Verdana;">&#176;</span><span style="font-family:Verdana;">N</span></span><span style="font-family:""> </span><span style="font-family:Verdana;">-</span><span style="font-family:""> </span><span style="font-family:""><span style="font-family:Verdana;">17</span><span style="white-space:nowrap;font-family:Verdana;">&#176;</span><span style="font-family:Verdana;">N;17</span><span style="white-space:nowrap;font-family:Verdana;">&#176;</span><span style="font-family:Verdana;">W</span></span><span style="font-family:""> </span><span style="font-family:Verdana;">-</span><span style="font-family:""> </span><span style="font-family:""><span style="font-family:Verdana;">13</span><span style="white-space:nowrap;font-family:Verdana;">&#176;</span><span style="font-family:Verdana;"></span><span style="font-family:Verdana;">W) the SLP to the north is strong;the wind converges at 200</span></span><span style="font-family:""> </span><span style="font-family:Verdana;">hPa corresponding to the position of the African Easterly Jet (AEJ) the rotational wind 700</span><span style="font-family:""> </span><span style="font-family:""><span style="font-family:Verdana;">hPa (corresponding to the position of the African Easterly Jet (AEJ) coming from the north-east is negative. In this region, thThis study examines the inter-annual variability of rainfall and Mean Sea Level Pressure (</span><span style="font-family:Verdana;">M</span><span style="font-family:Verdana;">SLP) over west Africa based on analysis of the Global Precipitation</span><span style="font-family:""><span style="font-family:Verdana;"> Climatology Project (GPCP) and National Center for Environmental Prediction/National Center for Atmospheric Research (NCEP/NCAR) Reanalysis respectively. An interconnection is found in this region, between Mean Sea Level Pressure (MSLP) anomaly (over Azores and St. Helena High) and monthly mean precipitation during summer (June to September: JJAS). We also found that over northern Senegal (15</span><span style="white-space:nowrap;font-family:Verdana;">&#176;</span><span style="font-family:Verdana;">N</span></span><span style="font-family:""> </span><span style="font-family:Verdana;">-</span><span style="font-family:""> </span><span style="font-family:""><span style="font-family:Verdana;">17</span><span style="white-space:nowrap;font-family:Verdana;">&#176;</span><span style="font-family:Verdana;">N;17</span><span style="white-space:nowrap;font-family:Verdana;">&#176;</span><span style="font-family:Verdana;">W</span></span><span style="font-family:""> </span><span style="font-family:Verdana;">-</span><span style="font-family:""> </span><span style="font-family:""><span style="font-family:Verdana;">13</span><span style="white-space:nowrap;font-family:Verdana;">&#176;</span><span style="font-family:Verdana;"></span><span style="font-family:Verdana;">W) the SLP to the north is strong;the wind converges at 200</span></span><span style="font-family:""> </span><span style="font-family:Verdana;">hPa corresponding to the position of the African Easterly Jet (AEJ) the rotational wind 700</span><span style="font-family:""> </span><span style="font-family:""><span style="font-family:Verdana;">hPa (corresponding to the position of the African Easterly Jet (AEJ) coming from the north-east is negative. In this region, th

关 键 词：Global Precipitation Climatology Project (GPCP) West Africa monsoon Inter-Tropical Convergence Zone African Easterly Jet (AEJ) Tropical Easterly Jet (TEJ) Sea Level Pressure (SLP) 

分 类 号：O17[理学—数学]