For the first time, sulfur dioxide concentration was monitored between 2005 and 2016 over Iran which is among the countries with a high SO2 emission rate in the world. To that end, SO2 column concentration at Planetary Boundary Layer (PBL) from Ozone Monitoring Instrument (OMI) was analyzed. OMI is a sensor onboard the Aura satellite which can measure daily SO2 concentration on the global scale...

We discuss collection 2 SO2 data from the DutchFinnish Ozone Monitoring Instrument (OMI) on board NASA EOS/Aura spacecraft and show examples of detected volcanic and anthropogenic SO2 emissions. Quantification of anthropogenic SO2 emissions requires collection 3 reprocessing available in the fall 2007.

Formaldehyde (HCHO) column data from satellites are widely used as a proxy for emissions of volatile organic compounds (VOCs) but validation of the data has been extremely limited. Here we use highly accurate HCHO aircraft observations from the NASA SEAC4RS campaign over the Southeast US in August-September 2013 to validate and intercompare six retrievals of HCHO columns from four different sat...

Glyoxal (CHOCHO) is produced in the atmosphere by oxidation of volatile organic compounds (VOCs). It is measurable from space by solar backscatter along with formaldehyde (HCHO), another oxidation product of VOCs. Isoprene emitted by vegetation is the dominant source of CHOCHO and HCHO in most of the world. We use aircraft observations of CHOCHO and HCHO from the SENEX campaign over the Southea...

Various indices have been defined to characterize the phase and amplitude of Madden-Julian oscillation (MJO). One widely used index is outgoing longwave radiation (OLR) based MJO (OMI), which calculated using spatial pattern 30–96-day eastward-filtered OLR. The empirical orthogonal functions (EOFs) calculate OMI in observations are prone degeneracy exhibit oscillations on order 10–20 days, desp...

We use the OMI-QA4ECV-v1.1 NO2 tropospheric columns over 10-year 2008–2017 period to confront satellite-based trends in concentrations those from state-of-the-art regional chemistry-transport model CHIMERE and evaluate bottom-up anthropogenic biogenic NOx emissions Europe. A focus is made for 30 most populated urban areas Over Western Europe, except coastal cities, OMI confirms drop simulated b...

[1] We investigate rapid around-the-world transport of a smoke aerosol plume released by intense forest fires in southeastern Australia in December 2006. During the first half of December 2006, southeastern Australia suffered from severe drought and exceptionally high temperatures. On 14 December 2006, a passing cold front in combination with the intense heat from the fires causing pyro-convect...