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Smallest 2019 ozone hole ever recorded by IASI over Antarctica

While sudden stratospheric warming (SSW) events are more common in the Northern Hemisphere, Safieddine et al. (2020) investigated the rare SSW event in the Southern Hemisphere that occurred in 2019 […]

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Contribution of ammonia to the formation of fine particulate matter over Paris

The Paris megacity faces frequent fine particulate matter (PM2.5) pollution episodes in spring. At this period of the year, large numbers of the particles consist of ammonium sulfate and nitrate […]

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Spaceborne Measurements of Formic and Acetic Acid: A Global View of the Regional Sources

Formic (HCOOH) and acetic (CH3COOH) acids are the most abundant carboxylic acids in the Earth’s atmosphere and contribute to the acidity of rainwater and cloud. Current knowledge is however unable […]

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Industrial and agricultural ammonia point sources exposed

A high-resolution map (~1km²) of the global atmospheric distribution of ammonia was generated combining almost a decade of IASI measurements (Van Damme et al., 2018). From it, they identify, categorize […]

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First quantification of the photochemical production of lowermost tropospheric ozone from satellite observations

The photochemical production of lowermost tropospheric ozone (located below 3 km of altitude) was quantified for the first time only using satellite data (Cuesta et al., 2018). This is the […]

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Decrease in tropospheric O3 levels of the Northern Hemisphere

Wespes et al. (2018) present the global fingerprints of recent changes in the tropospheric O3 levels measured by IASI over 2008 – 2017. Using appropriate multivariate regression methods, we discriminate […]

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O3 variability in the troposphere as observed by IASI

A study by Wespes et al. (2017) presents global patterns of the main geophysical drivers of IASI O3 variations, obtained by applying appropriate annual and seasonal multivariate regression models on […]

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Influence of the Saharan heat low on the North Atlantic humidity budget deduced from IASI isotopic observations

δD (isotopic ratio of HDO to H2O) observations derived from IASI measurements above the North Atlantic reveal the influence of the surface heating over Sahara in controlling the humidity budget […]

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IASI-derived ER[NH3/CO] in tropical biomass burning regions

A recent study by Whitburn et al. (2017) investigates the spatial and temporal variability in the biome-specific NH3 enhancement ratios relative to CO (ER_NH3/CO). They suggest a revision of the […]

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Improved NH3 retrievals from IASI

Van Damme et al. (2017) just published a paper presenting an improved version (v2.1) of the neural-network-based algorithm for retrieving atmospheric ammonia (NH3) columns from IASI satellite observations. Two datasets […]