GSTDTAP  > 资源环境科学
DOI10.1029/2021WR030039
Stable isotopes in precipitation and meteoric water: Sourcing and tracing the North American monsoon in Arizona, New Mexico, and Utah
C.L. Tulley-Cordova; A.L. Putman; G.J. Bowen
2021-11-29
发表期刊Water Resources Research
出版年2021
英文摘要

The North American monsoon (NAM) is an important source of precipitation across the southwestern United States. The approximate northern boundary of this feature crosses the Navajo Nation, in the Four Corners region, where NAM rains have long been important to the livelihoods of Native Americans. Relatively little is known about the characteristics and hydrological significance of the NAM in this region. Here we report a new 4-year record of stable H and O isotope ratios in monsoon-season rainfall and water resources across the Navajo Nation. Monthly precipitation samples collected at 39 sites document a characteristic pattern of 2H- and 18O-enrichment associated with monsoonal precipitation. These changes are weakly correlated with local precipitation amount, however, and the correlation that does exist is dominated by sub-cloud evaporation effects. In contrast to precipitation amount, monsoon-season isotopic values exhibited little spatial variability across the region, and after correction for sub-cloud evaporation Navajo Nation values were similar to those from a site in southern Arizona. Airmass back-trajectory analysis suggests that the uniformly high NAM precipitation water isotope ratios across the region may reflect 1) a region-wide shift from mid-latitude to low-latitude moisture sources at the onset of the peak monsoon, and 2) substantial land-surface recycling of NAM moisture in upwind regions. Comparison of precipitation water isotope data with surface and groundwater values implies that, despite its hydroclimatic significance, monsoon rainfall contributes little to subsurface water resources. This highlights the monsoon's importance for warm-season land-surface ecology and hydrology critical to residents in the Four Corners region.

领域资源环境
URL查看原文
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/343074
专题资源环境科学
推荐引用方式
GB/T 7714
C.L. Tulley-Cordova,A.L. Putman,G.J. Bowen. Stable isotopes in precipitation and meteoric water: Sourcing and tracing the North American monsoon in Arizona, New Mexico, and Utah[J]. Water Resources Research,2021.
APA C.L. Tulley-Cordova,A.L. Putman,&G.J. Bowen.(2021).Stable isotopes in precipitation and meteoric water: Sourcing and tracing the North American monsoon in Arizona, New Mexico, and Utah.Water Resources Research.
MLA C.L. Tulley-Cordova,et al."Stable isotopes in precipitation and meteoric water: Sourcing and tracing the North American monsoon in Arizona, New Mexico, and Utah".Water Resources Research (2021).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[C.L. Tulley-Cordova]的文章
[A.L. Putman]的文章
[G.J. Bowen]的文章
百度学术
百度学术中相似的文章
[C.L. Tulley-Cordova]的文章
[A.L. Putman]的文章
[G.J. Bowen]的文章
必应学术
必应学术中相似的文章
[C.L. Tulley-Cordova]的文章
[A.L. Putman]的文章
[G.J. Bowen]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

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。