Investigation of mixing and stratifications of boundary layer passive tracer after evening transition period

Nicholas Clark, Sandip Pal

Research output: Contribution to conferencePaper

Abstract

The aim of this study is to examine the vertical mixing and stratifications of passive tracer like atmospheric carbon dioxide mixing ratio (CO2) in the convective boundary Layer (CBL) and Residue Layer (RL). We used hourly time series of CO2 concentrations measured atop a 400 m tower located in northern Wisconsin forest for a 4-year time period (2012-2016). Previous studies of boundary layer mixing processes led to hypothesize that the concentration of CO2 at this height in the CBL and RL are approximately equivalent. Using the aforementioned observations, we will investigate whether or not this assumption is strictly applicable for diverse meteorological conditions in all seasons. We hypothesize that the RL-CO2 mixing ratio would differ due to the vertical stability conditions, stratifications and synoptic controls. Through analysis of CO2 concentrations, we will provide detailed statistics that reflect the accuracy, frequency, and validity of the hypothesis. This study will analyze
Original languageEnglish
StatePublished - Apr 11 2019

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