Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/2015WR017031 |
On the assessment of aridity with changes in atmospheric CO2 | |
Roderick, Michael L.1,2,3; Greve, Peter4; Farquhar, Graham D.2,3 | |
通讯作者 | Roderick, Michael L. |
来源期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2015 |
卷号 | 51期号:7页码:5450-5463 |
英文摘要 | A recent interpretation of climate model projections concluded that warmer is more arid. In contrast, dust records and other evidence have led the geoscience community to conclude that warmer is less arid leading to an aridity paradox. The warmer is more arid interpretation is based on a projected increase in the vapour pressure deficit (approximate to 7-9% K-1) that results in a projected increase in potential evaporation that greatly exceeds the projected increase in precipitation. However, the increase in potential evaporation does not result in an increase in (actual) evaporation which remains more or less constant in the model output. Projected changes in the long-term aridity can be assessed by directly interrogating the climate model output. To that end, we equate lack of precipitation with meteorological aridity and lack of runoff with hydrologic aridity. A third perspective, agro-ecological aridity, is not directly related to the water lost but rather to the carbon gain and is equated with the reduction in photosynthetic uptake of CO2. We reexamine the same climate model output and conclude that warmer is less arid from all perspectives and in agreement with the geological records. Future research will need to add the critical regional and seasonal perspectives to the aridity assessments described here. |
英文关键词 | aridity climate change ecohydrology potential evaporation |
类型 | Article |
语种 | 英语 |
国家 | Australia ; Switzerland |
收录类别 | SCI-E |
WOS记录号 | WOS:000360080200031 |
WOS关键词 | LAST GLACIAL MAXIMUM ; CARBON-DIOXIDE ; CLIMATE-CHANGE ; POTENTIAL EVAPOTRANSPIRATION ; AUSTRALIAN VEGETATION ; PLANT-RESPONSES ; PAN EVAPORATION ; WATER CYCLE ; SOIL-WATER ; PHOTOSYNTHESIS |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/190790 |
作者单位 | 1.Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT, Australia; 2.Australian Natl Univ, Res Sch Biol, Canberra, ACT, Australia; 3.Australian Res Council Ctr Excellence Climate Sys, Canberra, ACT, Australia; 4.ETH, Inst Atmospher & Climate Sci, Zurich, Switzerland |
推荐引用方式 GB/T 7714 | Roderick, Michael L.,Greve, Peter,Farquhar, Graham D.. On the assessment of aridity with changes in atmospheric CO2[J],2015,51(7):5450-5463. |
APA | Roderick, Michael L.,Greve, Peter,&Farquhar, Graham D..(2015).On the assessment of aridity with changes in atmospheric CO2.WATER RESOURCES RESEARCH,51(7),5450-5463. |
MLA | Roderick, Michael L.,et al."On the assessment of aridity with changes in atmospheric CO2".WATER RESOURCES RESEARCH 51.7(2015):5450-5463. |
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