DOI: 10.1007/s00382-016-3017-7
Scopus记录号: 2-s2.0-84959449829
论文题名: Annual variations in wet-deposition chemistry related to changes in climate
作者: Wetherbee G.A. ; Mast M.A.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2016
卷: 47, 期: 2017-09-10 起始页码: 3141
结束页码: 3155
语种: 英语
英文关键词: Climate
; NADP
; Precipitation
; Snow
; Wet deposition
英文摘要: National Atmospheric Deposition Program (NADP)/National Trends Network precipitation type, snow-season duration, and annual timing of selected chemical wet-deposition maxima vary with latitude and longitude within a 35-year (1979–2013) data record for the contiguous United States and Alaska. From the NADP data collected within the region bounded by 35.6645°–48.782° north latitude and 124°–68° west longitude, similarities in latitudinal and longitudinal patterns of changing snow-season duration, fraction of annual precipitation recorded as snow, and the timing of chemical wet-deposition maxima, suggest that the chemical climate of the atmosphere is linked to physical changes in climate. Total annual precipitation depth has increased 4–6 % while snow season duration has decreased from approximately 7 to 21 days across most of the USA, except in higher elevation regions where it has increased by as much as 21 days. Snow-season precipitation is increasingly comprised of snow, but annually total precipitation is increasingly comprised of liquid precipitation. Meanwhile, maximum ammonium deposition occurs as much as 27 days earlier, and the maximum nitrate: sulfate concentration ratio in wet-deposition occurs approximately 10–21 days earlier in the year. The maximum crustal (calcium + magnesium + potassium) cation deposition occurs 2–35 days earlier in the year. The data suggest that these shifts in the timing of atmospheric wet deposition are linked to a warming climate, but the ecological consequences are uncertain. © 2016, Springer-Verlag (outside the USA). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53470
Appears in Collections: 过去全球变化的重建
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作者单位: U.S. Geological Survey, Office of Water Quality, Branch of Quality Systems, Denver Federal Center, Mail Stop 401, Bldg. 95, Box 25046, Denver, CO, United States; U.S. Geological Survey, Colorado Water Science Center, Denver Federal Center, Mail Stop 415, Bldg. 53, Box 25046, Denver, CO, United States
Recommended Citation:
Wetherbee G.A.,Mast M.A.. Annual variations in wet-deposition chemistry related to changes in climate[J]. Climate Dynamics,2016-01-01,47(2017-09-10)