气候变化领域集成服务门户(CCPortal): The role of declining snow cover in the desiccation of the Great Salt Lake, Utah, using MODIS data

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DOI	10.1016/j.rse.2020.112106
	The role of declining snow cover in the desiccation of the Great Salt Lake, Utah, using MODIS data
	Hall D.K.; O'Leary D.S.; III; DiGirolamo N.E.; Miller W.; Kang D.H.
发表日期	2021
ISSN	00344257
卷号	252
英文摘要	The Great Salt Lake (GSL) in Utah has been shrinking since the middle of the 19th Century, leading to decreased area and volume, and increased salinity. We use satellite data products from the Terra and Aqua MODerate-resolution Imaging Spectroradiometer (MODIS) and the Landsat-7 and -8 satellites, along with meteorological and streamflow data, and modeled data products to study the relationship between changing snow-cover conditions and the decline of the GSL since 2000 in the context of the historical record of lake levels. The GSL basin includes much of the snow-dominated Wasatch and Uinta mountain ranges to the east of the lake. Snowmelt feeds the Bear, Jordan, and Weber rivers which are the three main rivers that flow into the lake. Snowmelt-timing maps, derived from a new MODIS standard snow-cover product, MOD10A1F, show that snow melted ~9.5 days earlier in the GSL basin during the study period, extending from 2000 to 2018. Air temperatures derived from 26 meteorological stations and surface temperatures measured by the Aqua MODIS land-surface temperature (LST) products, MYD21A1D and MYD21A1N, show trends of increasing temperature of ~0.94 °C (α = 0.05), and ~ 2.18 °C, respectively, with most of the LST trends in the GSL basin being statistically significant (α = 0.05). Increasing air temperatures in the basin have led to less precipitation falling as snow, lower snow depth (by ~34.5 mm (α = 0.01)) and snow-water equivalent (0.02 mm (α = 0.01)), and earlier snowmelt. Also during the study period, Global Land surface Evaporation Amsterdam Model data show evaporation increasing by ~3.2 mm/yr, with trends in much of the basin being statistically significant (α = 0.05). Trends calculated from the various products are generally in agreement indicating higher temperatures, greater evaporation, less snowfall and snow-on-the ground, and earlier snowmelt. Earlier snowmelt contributes to increasing evaporative loss from water flowing toward the lake. Furthermore, a lower mountain snowpack and less precipitation falling as snow (versus rain) is associated with lower stream discharge even if overall precipitation stays the same. The surface-water temperature of the GSL also increased over the study period by ~0.69 °C, according to the MODIS LST data products, the surface-water elevation of the lake dropped by ~1.7 m between 2000 and 2018, and the areal extent of the lake decreased by ~901 km2 as measured using Landsat imagery. Desiccation of the lake is associated with deleterious effects on wildlife, recreational activities, and some local industries. And, importantly, an expanding lake bed can also fuel dust storms that promote dangerous air quality along the Wasatch Front. This work elucidates the key role that satellite remote sensing can play in documenting earlier snowmelt and other changes in the GSL basin that influence the ongoing decline of the Great Salt Lake. © 2020 The Authors
英文关键词	Earlier snowmelt; Great Salt Lake; Landsat; MODIS Aqua; MODIS Terra; Snow cover; Snowmelt timing; Uinta Mountains; Wasatch Mountains
语种	英语
scopus关键词	Air quality; Atmospheric temperature; Chloride minerals; Driers (materials); Evaporation; Lakes; Land surface temperature; Radiometers; Rain; Remote sensing; Rivers; Satellites; Snow melting systems; Storms; Surface measurement; Surface properties; Increasing temperatures; Meteorological station; Moderate resolution imaging spectroradiometer; Recreational activities; Satellite remote sensing; Snow water equivalent; Surface temperatures; Surface water temperature; Snow; air quality; discharge; historical record; Landsat; MODIS; remote sensing; satellite data; snow cover; snowmelt; snowpack; streamflow; Amsterdam [North Holland]; Great Salt Lake; United States; Utah; Wasatch Front
来源期刊	Remote Sensing of Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/179092
作者单位	Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD 20740, United States; NASA / Goddard Space Flight Center, Greenbelt, MD 20771, United States; Department of Geographical Sciences, University of Maryland, College Park, MD 20742, United States; SSAI, Lanham, MD 20706, United States; Civil and Environmental Engineering, Brigham Young University, Provo, UT 84602, United States
推荐引用方式 GB/T 7714	Hall D.K.,O'Leary D.S.,III,et al. The role of declining snow cover in the desiccation of the Great Salt Lake, Utah, using MODIS data[J],2021,252.
APA	Hall D.K.,O'Leary D.S.,III,DiGirolamo N.E.,Miller W.,&Kang D.H..(2021).The role of declining snow cover in the desiccation of the Great Salt Lake, Utah, using MODIS data.Remote Sensing of Environment,252.
MLA	Hall D.K.,et al."The role of declining snow cover in the desiccation of the Great Salt Lake, Utah, using MODIS data".Remote Sensing of Environment 252(2021).