Michigan Tech Research Data最新文献

筛选

英文中文

Effects of the Large-Scale Circulation on Temperature and WaterVapor Distributions in the Π Chamber 大尺度环流对Π室内温度和水汽分布的影响

Michigan Tech Research Data Pub Date : 2021-02-16 DOI: 10.5194/AMT-14-5473-2021

Jesse C. Anderson, Subin Thomas, Prasanth Prabhakaran, R. Shaw, W. Cantrell

{"title":"Effects of the Large-Scale Circulation on Temperature and Water\u0000Vapor Distributions in the Π Chamber","authors":"Jesse C. Anderson, Subin Thomas, Prasanth Prabhakaran, R. Shaw, W. Cantrell","doi":"10.5194/AMT-14-5473-2021","DOIUrl":"https://doi.org/10.5194/AMT-14-5473-2021","url":null,"abstract":"Abstract. Microphysical processes are important for the development of clouds and thus Earth's climate. For example, turbulent fluctuations in the water vapor concentration, r, and temperature, T, cause fluctuations in the saturation ratio, S. Because S is the driving factor in the condensational growth of droplets, fluctuations may broaden the cloud droplet size distribution due to individual droplets experiencing different growth rates. The small scale turbulent fluctuations in the atmosphere that are relevant to cloud droplets are difficult to quantify through field measurements. We investigate these processes in the laboratory, using Michigan Tech's Π Chamber. The Π Chamber utilizes Rayleigh-Benard convection (RBC) to create the turbulent conditions inherent in clouds. In RBC it is common for a large scale circulation (LSC) to form. As a consequence of the LSC, the temperature field of the chamber is not spatially uniform. In this paper, we characterize the LSC in the Π chamber and show how it affects the shape of the distributions of r, T and S. The LSC was found to follow a single roll with an updraft and downdraft along opposing walls of the chamber. Near the updraft (downdraft), the distributions of T and r were positively (negatively) skewed. S consistently had a negatively skewed distribution, with the downdraft being the most negative.\u0000","PeriodicalId":164303,"journal":{"name":"Michigan Tech Research Data","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131078499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8