Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.5420 |
West Africa climate extremes and climate change indices | |
Barry, A. A.1; Caesar, J.2; Tank, A. M. G. Klein3; Aguilar, E.1; McSweeney, Carol2; Cyrille, Ahmed M.4; Nikiema, M. P.5; Narcisse, K. B.6; Sima, F.7; Stafford, G.7; Touray, L. M.7; Ayilari-Naa, J. A.8; Mendes, C. L.9; Tounkara, M.10; Gar-Glahn, Eugene V. S.11; Coulibaly, M. S.12; Dieh, M. F.13; Mouhaimouni, M.14; Oyegade, J. A.15; Sambou, E.16; Laogbessi, E. T.17 | |
2018-04-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2018 |
卷号 | 38页码:E921-E938 |
文章类型 | Article |
语种 | 英语 |
国家 | Spain; England; Netherlands; Benin; Burkina Faso; Cote Ivoire; Gambia; Ghana; Guinea Bissau; Liberia; Mali; Mauritania; Niger; Nigeria; Senegal; Togo |
英文摘要 | Observational analyses of changing climate extremes over the West Africa region have been limited by the availability of long and high-quality datasets. To help address this gap, a climate extremes indices workshop was held in the Gambia in December 2011 with participants from 14 West African countries. The resulting analysis utilized 15 annual indices derived from observed daily temperatures and 10 annual indices derived from observed daily precipitation. The analysis was conducted for 166 meteorological stations in 13 countries for 2 periods: 1960-2010 and 1981-2010. The analyses of trends in the annual mean temperature indices have identified statistically significant increases of 0.16 degrees C/decade and 0.28 degrees C/decade for mean annual maximum and mean annual minimum temperatures, respectively, averaged over all available land stations in the region during the last 50 years. The seasonal-temperature-related indices show significant patterns of warming in all seasons. The annual mean of daily minimum temperature has increased more than the annual mean of daily maximum temperature leading to a decreasing trend in the diurnal temperature range. Warm days and warm nights have become more frequent, and cold days and cold nights have become less frequent. The analyses of precipitation-based indices indicate spatially non-coherent changes throughout the study area with few statistically significant trends over the longer period. Exceptions to this are the simple daily intensity index and maximum 5-day precipitation, which show significant increasing regional trends over both the shorter and longer periods. Additionally, over the recent period (1981-2010) most of the precipitation related indices show significant trends towards wetter conditions. However, this period of increased rainfall follows a decade of significantly drier conditions in the region - it is not clear whether the recent upward trends reflect the 'recovery' from this long drought period or represents a long-term response to warming. |
英文关键词 | climate extremes West Africa indices trends climate change daily temperature daily precipitation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000431999600062 |
WOS关键词 | MONITORING CHANGES ; SAHEL RAINFALL ; PACIFIC REGION ; TEMPERATURE ; PRECIPITATION ; 20TH-CENTURY ; TRENDS ; VARIABILITY ; SOUTHERN ; NORTHERN |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/37655 |
专题 | 气候变化 |
作者单位 | 1.Univ Rovira & Virgili, Ctr Climate Change C3, Tarragona, Spain; 2.Met Off Hadley Ctr, Exeter, Devon, England; 3.Royal Netherlands Meteorol Inst, De Bilt, Netherlands; 4.DNM, Cotonou, Benin; 5.DGM, Ouagadougou, Burkina Faso; 6.DMN, Abidjan, Cote Ivoire; 7.DWR, Banjul, Gambia; 8.Ghana Meteorol Agcy GMet, Accra, Ghana; 9.INM, Bissau, Guinea Bissau; 10.DNM, Conakry, Guinea; 11.Div Meteorol, Arthington, Liberia; 12.DNM, Bamako, Mali; 13.ONM, Nouakchott, Mauritania; 14.DMN, Niamey, Niger; 15.NIMET, Lagos, Nigeria; 16.Agence Natl Meteorol Senegal ANAMS, Dakar, Senegal; 17.DGMN, Lome, Togo |
推荐引用方式 GB/T 7714 | Barry, A. A.,Caesar, J.,Tank, A. M. G. Klein,et al. West Africa climate extremes and climate change indices[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2018,38:E921-E938. |
APA | Barry, A. A..,Caesar, J..,Tank, A. M. G. Klein.,Aguilar, E..,McSweeney, Carol.,...&Laogbessi, E. T..(2018).West Africa climate extremes and climate change indices.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38,E921-E938. |
MLA | Barry, A. A.,et al."West Africa climate extremes and climate change indices".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38(2018):E921-E938. |
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