This paper concerns the improvements of NO2 forecast due to satellite data assimilation. The Ozone Monitoring Instrument (OMI) aboard NASA Aura satellite provides observations of NO2 columns for air quality study. These satellite observations are assimilated, with the optimal-interpolation method, in an air quality model from Polyphemus, in order to improve NO2 forecasts in Europe. Good consist...

The ‘Black Saturday’ fires were a series of devastating bushfires that burned across Victoria, Australia, during February 2009. The smoke plume from Saturday the 7th February, the worst day of the fires, separated from subsequent emissions and persisted for several weeks, providing the opportunity to track the changing composition of the smoke plume as it aged. In this study we have used satell...

Large sulfur dioxide plumes were measured in the Mexico City Metropolitan Area (MCMA) during the MILAGRO field campaign. This paper seeks to identify the sources of these plumes and the meteorological processes that affect their dispersion in a complex mountain basin. Surface measurements of SO2 and winds are analysed in combination with radar wind profiler data to identify transport directions...

The Match method quantifies chemical ozone loss in the polar stratosphere. The basic idea consists in calculating the forward trajectory of an air parcel that has been probed by an ozone measurement (e.g., by an ozonesonde or satellite instrument) and finding a second ozone measurement close to this trajectory. Such an event is called a “match”. A rate of chemical ozone destruction can be obtai...

Abstract. While substantial progress has been made to improve our understanding of biogenic isoprene emissions under unstressed conditions, large uncertainties remain with respect stressed conditions. Here, we use the US Drought Monitor (USDM) as a weekly drought severity index and tropospheric columns formaldehyde (HCHO), key product oxidation, retrieved from Ozone Monitoring Instrument (OMI) ...

Abstract. Sulfur dioxide (SO2) measurements from the Ozone Monitoring Instrument (OMI), Mapping and Profiler Suite (OMPS), TROPOspheric (TROPOMI) satellite spectrometers were used to update extend previously developed global catalogue of large SO2 emission sources. This version 2 covers period 2005–2021 includes a total 759 continuously emitting point sources releasing about 10 kt yr−1 more tha...

The elevated layers of absorbing smoke aerosols from western African (e.g., Gabon and Congo) biomass burning activities have been frequently observed above low-level stratocumulus clouds off the African coast, which presents an excellent natural laboratory for studying the effects of aerosols above clouds (AAC) on regional energy balance in tropical and subtropical environments. Using spatially...

We investigated long-term observations of the tropospheric nitrogen dioxide vertical column density (NO2 TropVCD) from Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) network in Russia and ASia (MADRAS) 2007 to 2017 at urban (Yokosuka Gwangju) remote (Fukue Cape Hedo) sites East Asia. The monthly mean NO2 TropVCD MAX-DOAS measured ~13:30 local time, which is Ozone Monitoring ...

The tropospheric vertical column density of NO2 (Trop VCD) can be obtained using satellite remote sensing, but it has been discovered that the Trop VCD is affected by uncertainties such as cloud fraction, terrain reflectivity, and aerosol optical depth. A certain error occurs in terms data inversion accuracy, necessitating additional ground observation verification. This study uses surface mass...

The present study is the first attempt to examine temporal and spatial characteristics of aerosol properties and classify their modes over Iran. The data used in this study include the records of Aerosol Optical Depth (AOD) and Angstrom Exponent (AE) from MODerate Resolution Imaging Spectroradiometer (MODIS) and Aerosol Index (AI) from the Ozone Monitoring Instrument (OMI), obtained from 2005 t...