Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/gcb.12888 |
Characterizing differences in precipitation regimes of extreme wet and dry years: implications for climate change experiments | |
Knapp, Alan K.1; Hoover, David L.1; Wilcox, Kevin R.1; Avolio, Meghan L.2; Koerner, Sally E.1; La Pierre, Kimberly J.3; Loik, Michael E.4; Luo, Yiqi5; Sala, Osvaldo E.6; Smith, Melinda D.1 | |
通讯作者 | Knapp, Alan K. |
来源期刊 | GLOBAL CHANGE BIOLOGY
![]() |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2015 |
卷号 | 21期号:7页码:2624-2633 |
英文摘要 | Climate change is intensifying the hydrologic cycle and is expected to increase the frequency of extreme wet and dry years. Beyond precipitation amount, extreme wet and dry years may differ in other ways, such as the number of precipitation events, event size, and the time between events. We assessed 1614 long-term (100year) precipitation records from around the world to identify key attributes of precipitation regimes, besides amount, that distinguish statistically extreme wet from extreme dry years. In general, in regions where mean annual precipitation (MAP) exceeded 1000mm, precipitation amounts in extreme wet and dry years differed from average years by similar to 40% and 30%, respectively. The magnitude of these deviations increased to >60% for dry years and to >150% for wet years in arid regions (MAP<500mm). Extreme wet years were primarily distinguished from average and extreme dry years by the presence of multiple extreme (large) daily precipitation events (events >99th percentile of all events); these occurred twice as often in extreme wet years compared to average years. In contrast, these large precipitation events were rare in extreme dry years. Less important for distinguishing extreme wet from dry years were mean event size and frequency, or the number of dry days between events. However, extreme dry years were distinguished from average years by an increase in the number of dry days between events. These precipitation regime attributes consistently differed between extreme wet and dry years across 12 major terrestrial ecoregions from around the world, from deserts to the tropics. Thus, we recommend that climate change experiments and model simulations incorporate these differences in key precipitation regime attributes, as well as amount into treatments. This will allow experiments to more realistically simulate extreme precipitation years and more accurately assess the ecological consequences. |
英文关键词 | climate change experiments climate extremes drought ecoregions global patterns precipitation rainfall patterns |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000356422500014 |
WOS关键词 | GLOBAL WATER CYCLE ; INTENSE PRECIPITATION ; ECOSYSTEM DYNAMICS ; EVENTS ; TRENDS ; VARIABILITY ; GRASSLANDS ; FREQUENCY ; CARBON ; INTENSIFICATION |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
来源机构 | Arizona State University ; University of California, Berkeley ; Colorado State University |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/187593 |
作者单位 | 1.Colorado State Univ, Grad Degree Program Ecol, Dept Biol, Ft Collins, CO 80526 USA; 2.Univ Utah, Dept Biol, Salt Lake City, UT 84112 USA; 3.Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA; 4.Univ Calif Santa Cruz, Dept Environm Studies, Santa Cruz, CA 95064 USA; 5.Univ Oklahoma, Dept Microbiol & Plant Biol, Norman, OK 73019 USA; 6.Arizona State Univ, Sch Life Sci, Tempe, AZ 85287 USA |
推荐引用方式 GB/T 7714 | Knapp, Alan K.,Hoover, David L.,Wilcox, Kevin R.,et al. Characterizing differences in precipitation regimes of extreme wet and dry years: implications for climate change experiments[J]. Arizona State University, University of California, Berkeley, Colorado State University,2015,21(7):2624-2633. |
APA | Knapp, Alan K..,Hoover, David L..,Wilcox, Kevin R..,Avolio, Meghan L..,Koerner, Sally E..,...&Smith, Melinda D..(2015).Characterizing differences in precipitation regimes of extreme wet and dry years: implications for climate change experiments.GLOBAL CHANGE BIOLOGY,21(7),2624-2633. |
MLA | Knapp, Alan K.,et al."Characterizing differences in precipitation regimes of extreme wet and dry years: implications for climate change experiments".GLOBAL CHANGE BIOLOGY 21.7(2015):2624-2633. |
条目包含的文件 | ||||||
文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
Characterizing diffe(867KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。