Dominance of climate warming effects on recent drying trends over wet monsoon regions
Understanding changes in background dryness over land is key information for adapting to climate change because of its critical socioeconomic consequences. However, causes of continental dryness changes remain uncertain because various climate parameters control dryness. Here, we verify dominant...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2017-09-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://www.atmos-chem-phys.net/17/10467/2017/acp-17-10467-2017.pdf |
| _version_ | 1811326879348555776 |
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| author | C.-E. Park S.-J. Jeong C.-H. Ho H. Park S. Piao S. Piao S. Piao J. Kim S. Feng |
| author_facet | C.-E. Park S.-J. Jeong C.-H. Ho H. Park S. Piao S. Piao S. Piao J. Kim S. Feng |
| author_sort | C.-E. Park |
| collection | DOAJ |
| description | Understanding changes in background dryness over land is key information for
adapting to climate change because of its critical socioeconomic
consequences. However, causes of continental dryness changes remain uncertain
because various climate parameters control dryness. Here, we verify dominant
climate variables determining dryness trends over continental eastern Asia,
which is characterized by diverse hydroclimate regimes ranging from arid to
humid, by quantifying the relative effects of changes in precipitation, solar
radiation, wind speed, surface air temperature, and relative humidity on
trends in the aridity index based on observed data from 189 weather stations
for the period of 1961–2010. Before the early 1980s (1961–1983), change in
precipitation is a primary condition for determining aridity trends. In the
later period (1984–2010), the dominant climate parameter for aridity trends
varies according to the hydroclimate regime. Drying trends in arid regions
are mostly explained by reduced precipitation. In contrast, the increase in
potential evapotranspiration due to increased atmospheric water-holding
capacity, a secondary impact of warming, works to increase aridity over the
humid monsoon region despite an enhanced water supply and relatively less
warming. Our results show significant drying effects of warming over the
humid monsoon region in recent decades; this also supports the drying trends
over warm and water-sufficient regions in future climate. |
| first_indexed | 2024-04-13T14:57:10Z |
| format | Article |
| id | doaj.art-581d92b2237843cd9c94876ac64e471e |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-04-13T14:57:10Z |
| publishDate | 2017-09-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-581d92b2237843cd9c94876ac64e471e2022-12-22T02:42:24ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242017-09-0117104671047610.5194/acp-17-10467-2017Dominance of climate warming effects on recent drying trends over wet monsoon regionsC.-E. Park0S.-J. Jeong1C.-H. Ho2H. Park3S. Piao4S. Piao5S. Piao6J. Kim7S. Feng8School of Environmental Science and Engineering, South University of Science and Technology of China, Shenzhen 518055, ChinaSchool of Environmental Science and Engineering, South University of Science and Technology of China, Shenzhen 518055, ChinaSchool of Earth and Environmental Sciences, Seoul National University, Seoul, 08826, South KoreaSchool of Earth and Environmental Sciences, Seoul National University, Seoul, 08826, South KoreaKey Laboratory of Alpine Ecology and Biodiversity, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, ChinaSino-French Institute for Earth System Science, College of Urban and Environmental Sciences, Peking University, Beijing 100871, ChinaCenter for Excellence in Tibetan Earth Science, Chinese Academy of Sciences, Beijing 100085, ChinaDepartment of Atmospheric and Oceanic Sciences, University of California, Los Angeles, CA 90024, USADepartment of Geosciences, University of Arkansas, Fayetteville, AR 72701, USAUnderstanding changes in background dryness over land is key information for adapting to climate change because of its critical socioeconomic consequences. However, causes of continental dryness changes remain uncertain because various climate parameters control dryness. Here, we verify dominant climate variables determining dryness trends over continental eastern Asia, which is characterized by diverse hydroclimate regimes ranging from arid to humid, by quantifying the relative effects of changes in precipitation, solar radiation, wind speed, surface air temperature, and relative humidity on trends in the aridity index based on observed data from 189 weather stations for the period of 1961–2010. Before the early 1980s (1961–1983), change in precipitation is a primary condition for determining aridity trends. In the later period (1984–2010), the dominant climate parameter for aridity trends varies according to the hydroclimate regime. Drying trends in arid regions are mostly explained by reduced precipitation. In contrast, the increase in potential evapotranspiration due to increased atmospheric water-holding capacity, a secondary impact of warming, works to increase aridity over the humid monsoon region despite an enhanced water supply and relatively less warming. Our results show significant drying effects of warming over the humid monsoon region in recent decades; this also supports the drying trends over warm and water-sufficient regions in future climate.https://www.atmos-chem-phys.net/17/10467/2017/acp-17-10467-2017.pdf |
| spellingShingle | C.-E. Park S.-J. Jeong C.-H. Ho H. Park S. Piao S. Piao S. Piao J. Kim S. Feng Dominance of climate warming effects on recent drying trends over wet monsoon regions Atmospheric Chemistry and Physics |
| title | Dominance of climate warming effects on recent drying trends over wet monsoon regions |
| title_full | Dominance of climate warming effects on recent drying trends over wet monsoon regions |
| title_fullStr | Dominance of climate warming effects on recent drying trends over wet monsoon regions |
| title_full_unstemmed | Dominance of climate warming effects on recent drying trends over wet monsoon regions |
| title_short | Dominance of climate warming effects on recent drying trends over wet monsoon regions |
| title_sort | dominance of climate warming effects on recent drying trends over wet monsoon regions |
| url | https://www.atmos-chem-phys.net/17/10467/2017/acp-17-10467-2017.pdf |
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