Observations of tropospheric trace gases and meteorology in rural Virginia using an unattended monitoring system: Hurricane Hugo (1989), A case study

摘要: Tropospheric trace gases such as ozone and reactive nitrogen compounds exert a strong influence on global climate, but observations of these species are limited by the necessity having trained observer site to monitor instruments. A technique using modern communications technology has been developed transport review data collected at remote site. The was equipped with PAM II station satellite link so that raw, real-time equipment status were available for inspection readily workstation University Maryland campus through combination wide local area networks. CO, NO, NOy, O3, UV radiative flux, meteorological parameters measured in rural Virginia full year. cleanest air observed over year associated passage Hurricane Hugo mid-Atlantic region September 22, 1989. Hourly average concentrations O3 during this particular case study low 90 ppbv, 570 pptv, 11 respectively. Within period, daytime NO highly variable, ranging between detection limit instrument, ∼ 20 2.4 ppbv. These well below hourly concentration Equivalent potential temperature, θe, conjunction gas geostrophic back-trajectories, illustrates how hurricane influenced parcel history; CO NOy increased time spent land. Observations consistent current models based mean soundings aircraft flights. Hurricanes land also appear redistribute vertically throughout troposphere, creating substantial post-storm tropospheric column increase.