We have developed an advanced chemical data assimilation system to combine observations of chemical compounds from multiple satellites. NO2, O3, CO, and HNO3 measurements from the Ozone Monitoring Instrument (OMI), Tropospheric Emission Spectrometer (TES), Measurement of Pollution in the Troposphere (MOPITT), and Microwave Limb Sounder (MLS) satellite instruments are assimilated into the global...

Abstract. Stratospheric aerosols are an important component of the climate system. They not only change radiative budget Earth but also play essential role in ozone depletion. These impacts particularly noticeable after volcanic eruptions when SO2 injected with eruption reaches stratosphere, oxidizes, and forms stratospheric aerosol. There have been several studies which a plume associated forc...

Abstract. Using the Vector LInearized Discrete Ordinate Radiative Transfer (VLIDORT) code as main driver for forward model simulations, a first-of-its-kind data assimilation scheme has been developed assimilating Ozone Monitoring Instrument (OMI) aerosol index (AI) measurements into Naval Aerosol Analysis and Predictive System (NAAPS). This study suggests that both root mean square error (RMSE)...

32 33 We present a global data set of free tropospheric ozone-CO correlations with 2 o × 2.5 o 34 spatial resolution from the OMI and AIRS satellite instruments for each season of 2008. 35 OMI (ozone) and AIRS (CO) have near daily global coverage and observe coincident 36 scenes with similar vertical sensitivities. The resulting ozone-CO correlations are highly 37 statistically significant (pos...

Observations of ozone from satellite platform is a key source of information to monitor and understand processes that may have a relevant impact on public health, air quality and climate. To achieve at the same time a reasonable spatial resolutions and a sufficient sensitivity, nadir UV/VIS sensor may be exploited. The topic of the PhD thesis work summarized here is the use of neural networks (...

The total ozone measurements by Belsk’s Dobson spectrophotometer have been compared with the satellite total ozone taken during the OMI (on board of Aura spacecraft) overpasses for the period August 2004 – July 2006. The agreement between both data sets is much better if the results of the recent (June 2005) calibration campaign of Belsk’s Dobson at Hohenpeissenberg are incorporated to the stan...

The eastern region is an important economic hinterland and energy of China; however, the rapid development decoupling environmental pressure have resulted in a significant increase volatile organic compound (VOC) emissions, facing air pollution problem high-concentration formaldehyde accumulation. Aura/Ozone Monitoring Instrument (OMI) remote sensing satellite can perform long-term large-scale ...

In this work, we present the development of a 4D-Ensemble-Variational (4DEnVar) data assimilation technique to estimate NOx top-down emissions using regional chemical transport model LOTOS-EUROS with NO2 observations from TROPOspheric Monitoring Instrument (TROPOMI). The was performed for domain in northwest South America centered over Colombia, and includes regions Panama, Venezuela Ecuador. 4...

Ultraviolet radiation (UVR) plays a key role in the photochemistry of atmosphere, through absorption or dispersion processes by its constituents (ozone, cloudiness, aerosols, and pollutants troposphere). Quantifying UVR spatial-temporal way knowing relationships with modulating variables is important for Rio Grande do Sul State, region one highest skin neoplasms rates Brazil. data region, acqui...