Arid
项目编号0004265
Snowfall Rate Reduction by Pollution Aerosols
Randolph Borys
主持机构Nevada System of Higher Education, Desert Research Institute
开始日期2000-12-01
结束日期2004-11-30
资助经费411135(USD)
项目类别Continuing Grant
资助机构US-NSF(美国国家科学基金会)
项目所属计划PHYSICAL METEOROLOGY, ATMOSPHERIC CHEMISTRY
语种英语
国家美国
英文简介The hypothesis of this research is that anthropogenic aerosols increase the concentration of cloud droplets but decrease their average size, thus reducing the snowfall rate by decreasing the efficiency with which falling ice crystals sweep out the supercooled droplets. The approach is to monitor the chemical and physical properties of clouds and aerosols and the snowfall rate at the Storm Peak Observatory, a laboratory operated by the Desert Research Institute at an elevation of 3210 meters near Steamboat Springs, Colorado. At this altitude, the Observatory is frequently above cloud base during snow. The measured quantities include the size distributions of cloud droplets, ice crystals, and aerosol particles, the chemical composition of cloud water and snow, and the snowfall rate. A radar wind profiler and balloon sounding system complement the measurements at the ground by providing vertical profiles of wind, temperature, humidity, radar reflectivity, and Doppler spectra. This work has significant economic and demographic implications. If pollution aerosols are significantly reducing snowfall rates, this will decrease the amount of water available from snow pack, which in the West is an important source.
来源学科分类Geosciences
URLhttps://www.nsf.gov/awardsearch/showAward?AWD_ID=0004265
资源类型项目
条目标识符http://119.78.100.177/qdio/handle/2XILL650/342225
推荐引用方式
GB/T 7714
Randolph Borys.Snowfall Rate Reduction by Pollution Aerosols.2000.
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