Global distribution of tropospheric ozone from satellite measurements using the empirically corrected tropospheric ozone residual technique: Identification of the regional aspects of air pollution

[摘要] Using coincident observations of total ozone from the Total Ozone MappingSpectrometer (TOMS) and stratospheric ozone profiles from the Solar BackscatteredUltraviolet (SBUV) instruments, detailed maps of tropospheric ozone have been derivedon a daily basis over a time period spanning more than two decades. The resultantclimatological seasonal depictions of the tropospheric ozone residual (TOR) show muchmore detail than an earlier analysis that had used coincident TOMS and StratosphericAerosol and Gas Experiment (SAGE) ozone profiles, although there are many similaritiesbetween the TOMS/SAGE TOR and the TOMS/SBUV TOR climatologies.In particular,both TOR seasonal depictions show large enhancements in the southern tropics andsubtropics in austral spring and at northern temperate latitudes during the summer.Themuch greater detail in this new data set clearly defines the regional aspect of troposphericozone pollution in northeastern India, eastern United States, eastern China, and west andsouthern Africa.Being able to define monthly climatologies for each year of the datarecord provides enough temporal resolution to illustrate significant interannual variabilityin some of these regions.

[学科分类] 大气科学