Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.5099 |
Future projections of streamflow magnitude and timing differ across coastal watersheds of the western United States | |
Burke, William D.1; Ficklin, Darren L.2 | |
2017-11-15 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2017 |
卷号 | 37期号:13 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Climate change has and will continue to impact the magnitude and timing of streamflow throughout the world. While streamflow timing of western United States watersheds has shifted earlier in mountainous snow-dominated watersheds due to earlier snowmelt, timing for rain-dominated coastal watersheds has shifted to later in the year. Despite these dissimilarities, coastal watersheds have received little attention in the literature. This research assesses changes in projected climate and hydrology for five small coastal basins (42-718km(2)) in Washington, Oregon, and California. Projections of temperature and precipitation from General Circulation Models (GCMs) for Representative Concentration Pathways 4.5 and 8.5 are coupled with the Soil and Water Assessment Tool hydrologic model to simulate future hydrology for each watershed. The response of climate, streamflow discharge, and timing was analysed for each watershed by comparing the projected mid-21st century (2035-2064) and late-21st century (2070-2099) to the historical period (1970-1999). While temperature is projected to increase at each watershed from 1 to 6 degrees C by the end of the 21st century, precipitation varies widely with the median and mean change across all watersheds and GCMs being close to zero (just 2.0 and 3.6%, respectively). Changes in the magnitude of peak winter streamflow discharge differ across the region compared to the historical period. Streamflow timing also features latitudinal divergence, with the southern California watershed projecting later timing by 13days and all other watersheds indicating smaller shifts (0-7days) for the end of the 21st century compared to the historical time period, largely from corresponding shifts in precipitation timing. The projected decreases in peak winter streamflow magnitude, particularly in central and southern California, have critical implications for water supply, which is already strained from extensive drought and high demand. This research makes strides to assess new trends across coastal watersheds. |
英文关键词 | climate change coastal watershed streamflow timing streamflow magnitude SWAT General Circulation Models |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000414329800001 |
WOS关键词 | HYDROLOGICALLY BASED DATASET ; LAND-SURFACE FLUXES ; CLIMATE-CHANGE ; GRIDDED PRECIPITATION ; SWAT MODEL ; RUNOFF ; TEMPERATURE ; TRENDS ; RIVER ; UNCERTAINTY |
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/36820 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif Santa Barbara, Bren Sch Environm Sci & Management, Santa Barbara, CA 93106 USA; 2.Indiana Univ, Dept Geog, 701 E Kirkwood Ave, Bloomington, IN 47405 USA |
推荐引用方式 GB/T 7714 | Burke, William D.,Ficklin, Darren L.. Future projections of streamflow magnitude and timing differ across coastal watersheds of the western United States[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2017,37(13). |
APA | Burke, William D.,&Ficklin, Darren L..(2017).Future projections of streamflow magnitude and timing differ across coastal watersheds of the western United States.INTERNATIONAL JOURNAL OF CLIMATOLOGY,37(13). |
MLA | Burke, William D.,et al."Future projections of streamflow magnitude and timing differ across coastal watersheds of the western United States".INTERNATIONAL JOURNAL OF CLIMATOLOGY 37.13(2017). |
条目包含的文件 | 条目无相关文件。 |
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。
修改评论