Knowledge Resource Center for Ecological Environment in Arid Area
Recent trends in the climate of Namaqualand, a megadiverse arid region of South Africa | |
Davis, Claire L.1; Hoffman, M. Timm2; Roberts, Wesley3 | |
通讯作者 | Davis, Claire L. |
来源期刊 | SOUTH AFRICAN JOURNAL OF SCIENCE
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ISSN | 0038-2353 |
EISSN | 1996-7489 |
出版年 | 2016 |
卷号 | 112期号:3-4页码:89-97 |
英文摘要 | Namaqualand is especially vulnerable to future climate change impacts. Using a high-resolution (0.5 degrees x0.5 degrees) gridded data set (CRU TS 3.1) and individual weather station data, we demonstrated that temperatures as well as frequency of hot extremes have increased across this region. Specifically, minimum temperatures have increased by 1.4 degrees C and maximum temperatures by 1.1 degrees C over the last century. Of the five weather stations analysed, two showed evidence of a significant increase in the duration of warm spells of up to 5 days per decade and a reduction in the number of cool days (TX10P) by up to 3 days per decade. In terms of rainfall, we found no clear evidence for a significant change in annual totals or the frequency or intensity of rainfall events. Seasonal trends in rainfall did, however, demonstrate some spatial variability across the region. Spatial trends in evapotranspiration obtained from the 8-day MOD16 ET product were characterised by a steepening inland-coastal gradient where areas along the coastline showed a significant increase in evapotranspiration of up to 30 mm per decade, most notably in spring and summer. The increase in temperature linked with the increases in evapotranspiration pose significant challenges for water availability in the region, but further research into changes in coastal fog is required in order for a more reliable assessment to be made. Overall, the results presented in this study provide evidence-based information for the management of climate change impacts as well as the development of appropriate adaptation responses at a local scale. |
英文关键词 | climate extreme trend analysis temperature rainfall evapotranspiration |
类型 | Article |
语种 | 英语 |
国家 | South Africa ; Zambia |
收录类别 | SCI-E |
WOS记录号 | WOS:000373680800014 |
WOS关键词 | DAILY PRECIPITATION ; TEMPERATURE TRENDS ; SUCCULENT KAROO ; DYNAMICS ; VULNERABILITY ; MAXIMUM |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/196526 |
作者单位 | 1.CSIR, Nat Resources & Environm, POB 320, ZA-7599 Stellenbosch, South Africa; 2.Univ Cape Town, Dept Biol Sci, ZA-7925 Cape Town, South Africa; 3.BioCarbon Partners, Lusaka, Zambia |
推荐引用方式 GB/T 7714 | Davis, Claire L.,Hoffman, M. Timm,Roberts, Wesley. Recent trends in the climate of Namaqualand, a megadiverse arid region of South Africa[J],2016,112(3-4):89-97. |
APA | Davis, Claire L.,Hoffman, M. Timm,&Roberts, Wesley.(2016).Recent trends in the climate of Namaqualand, a megadiverse arid region of South Africa.SOUTH AFRICAN JOURNAL OF SCIENCE,112(3-4),89-97. |
MLA | Davis, Claire L.,et al."Recent trends in the climate of Namaqualand, a megadiverse arid region of South Africa".SOUTH AFRICAN JOURNAL OF SCIENCE 112.3-4(2016):89-97. |
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文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
Recent trends in the(1539KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 |
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