Characterization of ozone profiles derived from Aura TES and OMI radiances

摘要: Abstract. We present satellite based ozone profile estimates derived by combining radiances measured at thermal infrared (TIR) wavelengths from the Aura Tropospheric Emission Spectrometer (TES) and ultraviolet (UV) Ozone Monitoring Instrument (OMI). The advantage of using these combined instruments for sounding over either instrument alone is improved sensitivity near surface as well capability to consistently resolve lower troposphere, upper stratosphere scenes with varying geophysical states. For example, vertical resolution TES or OMI varies strongly albedo temperature. Typically, provides 1.6 degrees freedom signal (DOFS) less than 1 DOFS in troposphere. combination 2 troposphere approximately 0.4 (surface 700 hPa). evaluated new ozonesonde measurements found that calculated errors joint are reasonable agreement actual root-mean-square (RMS) difference between ozonesondes TES/OMI estimates. also used a common priori retrievals order evaluate different retrieval approaches on capturing near-surface variability. shows significant improvements quantifying variations RMS differences 49.9% correlation coefficient R = 0.58 compared 67.2% 0.33 115.8% 0.09 OMI. This comparison removes impacts climatological retrievals. However, it results artificially large sonde/retrieval differences. profiles production code will use therefore have more realistic those volume mixing ratio profile.