Two gas-phase formaldehyde (HCHO) measurement techniques, a modified commercial wet-chemical instrument based on Hantzsch fluorimetry and a custombuilt instrument based on fiber laser-induced fluorescence (FILIF), were deployed at the atmospheric simulation chamber SAPHIR (Simulation of Atmospheric PHotochemistry In a large Reaction Chamber) to compare the instruments’ performances under a rang...

Atmospheric aerosols affect human health, alter cloud optical properties, influence the climate and radiative balance, contribute to cooling of atmosphere. Aerosol climatology based on aerosol robotic network (AERONET) ozone monitoring instrument (OMI) data from two locations (Urban Dhaka coastal Bhola Island) over Bangladesh was conducted for 8 years (2012–2019), focusing characterization sche...

This work presents a new high-resolution NO2 dataset derived from the NASA Ozone Monitoring Instrument (OMI) NO2 version 3.0 retrieval that can be used to estimate surface level concentrations. The standard 15 NASA product uses NO2 vertical profile shape factors from a 1.25° × 1° (~110 × 110 km) resolution Global Model Initiative (GMI) model simulation to calculate air mass factors, a critical ...

Using daily Goddard Chemistry Aerosol Radiation and Transport (GOCART) model simulations and columnar retrievals of 0.55 μm aerosol optical thickness (AOT) and fine mode fraction (FMF) from the Moderate Resolution Imaging Spectroradiometer (MODIS), we estimate the satellite-derived aerosol properties over the global oceans between June 2006 and May 2007 due to black carbon (BC), organic carbon ...

The Nanjing Government applied temporary environmental regulations to guarantee good air quality during the Youth Olympic Games (YOG) in 2014. We study the effect of those regulations by applying the emission estimate algorithm DECSO (Daily Emission estimates Constrained by Satellite Observations) to measurements of the Ozone Monitoring Instrument (OMI). We improved DECSO by updating the chemic...

[1] On 5 April 2005, during the East Asian Study of Tropospheric Aerosols: An International Regional Experiment (EAST-AIRE) aircraft campaign, heavy loadings of SO2 (20 ppb near ground, 1–3 ppb at 2 km altitude) and dust with aerosol optical depth of 1 were measured over Shenyang, an industrialized city 600 km NE of Beijing. In this study, Ozone Monitoring Instrument (OMI) and MODIS satellite s...

[1] The brightness temperature difference (BTD) between two thermal infrared bands is a common index for dust detection. However, the BTD is sensitive to the observed temperature, which hinders its use in automatic dust detection, especially over desert land surfaces. In this paper, a dynamic reference brightness temperature differences (DRBTD) algorithm was developed to detect dust by removing...

Abstract. Free tropospheric ozone (O3) trends in the Central East China (CEC) and export regions are investigated for 2008–2017 using IASI (Infrared Atmospheric Sounding Interferometer) O3 observations LMDZ-OR-INCA model simulations, including most recent Chinese emission inventory. The observed modelled CEC region ?0.07 ± 0.02 ?0.08 DU yr?1, respectively, lower free troposphere (3–6 km column)...