Search Results - "Szeląg, Monika E."

Global Ozone Loss Following Extreme Solar Proton Storms Based on the July 2012 Coronal Mass Ejection by Kalakoski, Niilo, Verronen, Pekka T., Szelag, Monika E., Jackman, Charles H.

“…Large solar coronal mass ejections pose a threat in the near-Earth space. As a cause of extreme periods of space weather, they can damage satellite-based…”
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Simulated seasonal impact on middle atmospheric ozone from high-energy electron precipitation related to pulsating aurorae by Verronen, Pekka T., Kero, Antti, Partamies, Noora, Szeląg, Monika E., Oyama, Shin-Ichiro, Miyoshi, Yoshizumi, Turunen, Esa

“…Recent simulation studies have provided evidence that a pulsating aurora (PsA) associated with high-energy electron precipitation is having a clear local…”
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Statistical response of middle atmosphere composition to solar proton events in WACCM-D simulations: the importance of lower ionospheric chemistry by Kalakoski, Niilo, Verronen, Pekka T, Seppälä, Annika, SzelÄg, Monika E, Kero, Antti, Marsh, Daniel R

“…Atmospheric effects of solar proton events (SPEs) have been studied for decades, because their drastic impact can be used to test our understanding of upper…”
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Building a bridge: characterizing major anthropogenic point sources in the South African Highveld region using OCO-3 carbon dioxide snapshot area maps and Sentinel-5P/TROPOMI nitrogen dioxide columns by Hakkarainen, Janne, Ialongo, Iolanda, Oda, Tomohiro, Szeląg, Monika E, O’Dell, Christopher W, Eldering, Annmarie, Crisp, David

“…Abstract In this paper, we characterize major anthropogenic point sources in the South African Highveld region using Orbiting Carbon Observatory-3 (OCO-3)…”
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Magnetic-local-time dependency of radiation belt electron precipitation: impact on ozone in the polar middle atmosphere by Verronen, Pekka T., Marsh, Daniel R., Szeląg, Monika E., Kalakoski, Niilo

“…The radiation belts are regions in the near-Earth space where solar wind electrons are captured by the Earth's magnetic field. A portion of these electrons is…”
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Analyzing nitrogen oxides to carbon dioxide emission ratios from space: A case study of Matimba Power Station in South Africa by Hakkarainen, Janne, Szeląg, Monika E., Ialongo, Iolanda, Retscher, Christian, Oda, Tomohiro, Crisp, David

“…We describe a new methodology for deriving source-specific emission ratios of nitrogen oxides (NOx) to carbon dioxide (CO2) from space-based TROPOspheric…”
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Analyzing Local Carbon Dioxide and Nitrogen Oxide Emissions From Space Using the Divergence Method: An Application to the Synthetic SMARTCARB Dataset by Hakkarainen, Janne, Ialongo, Iolanda, Koene, Erik, Szeląg, Monika E., Tamminen, Johanna, Kuhlmann, Gerrit, Brunner, Dominik

“…Since the Paris Agreement was adopted in 2015, the role of space-based observations for monitoring anthropogenic greenhouse gas (GHG) emissions has increased…”
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Seasonal stratospheric ozone trends over 2000–2018 derived from several merged data sets by SzelÄg, Monika E, Sofieva, Viktoria F, Degenstein, Doug, Roth, Chris, Davis, Sean, Froidevaux, Lucien

“…In this work, we analyze the seasonal dependence of ozone trends in the stratosphere using four long-term merged data sets, SAGE-CCI-OMPS, SAGE-OSIRIS-OMPS,…”
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Ozone impact from solar energetic particles cools the polar stratosphere by Szela̧g, Monika E., Marsh, Daniel R., Verronen, Pekka T., Seppälä, Annika, Kalakoski, Niilo

“…Understanding atmospheric impacts of solar energetic particle precipitation (EPP) remains challenging, from quantification of the response in ozone, to…”
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Is there a direct solar proton impact on lower-stratospheric ozone? by Jia, Jia, Kero, Antti, Kalakoski, Niilo, SzelÄg, Monika E, Verronen, Pekka T

“…We investigate Arctic polar atmospheric ozone responses to solar proton events (SPEs) using MLS (Microwave Limb Sounder) satellite measurements (2004–now) and…”
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Odd hydrogen response thresholds for indication of solar proton and electron impact in the mesosphere and stratosphere by Häkkilä, Tuomas, Verronen, Pekka T., Millán, Luis, Szeląg, Monika E., Kalakoski, Niilo, Kero, Antti

“…Understanding the atmospheric forcing from energetic particle precipitation (EPP) is important for climate simulations on decadal time scales. However,…”
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