A5029582558- Atmospheric chemistry and aerosols
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Air Quality and Health Impacts
- Air Quality Monitoring and Forecasting
- Atmospheric aerosols and clouds
- Climate Change and Health Impacts
- Impact of Light on Environment and Health
- COVID-19 impact on air quality
- Cryospheric studies and observations
- Vehicle emissions and performance
- Urban Transport and Accessibility
- Winter Sports Injuries and Performance
- Urban Heat Island Mitigation
- Spacecraft Design and Technology
- Fire effects on ecosystems
- Meteorological Phenomena and Simulations
- Distributed and Parallel Computing Systems
- Arctic and Antarctic ice dynamics
- Remote Sensing in Agriculture
- Health and Medical Studies
- Geophysics and Gravity Measurements
- Remote Sensing and Land Use
- Lightning and Electromagnetic Phenomena
- Climate change and permafrost
Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)
2009-2024
Royal Belgian Institute for Space Aeronomy
2008
Abstract During spring 2020, the COVID-19 pandemic caused massive reductions in emissions from industry and ground airborne transportation. To explore resulting atmospheric composition changes, we conducted BLUESKY campaign with two research aircraft measured trace gases, aerosols, cloud properties boundary layer to lower stratosphere. From 16 May 9 June performed 20 flights early lockdown phase over Europe Atlantic Ocean. We found up 50% nitrogen dioxide concentrations urban areas GOME-2B...
Compared to surface in-situ observations, satellite data on aerosol optical depth (AOD) enables area-wide monitoring of tropospheric aerosols. However, coverage and reliability products depend atmospheric conditions concentrations have be retrieved from AOD. This study investigates the potential produce reliable maps PM2.5 for Germany parts surrounding countries using AOD based observations by three different sensors. For first time, retrievals Sea Land Surface Temperature Radiometer (SLSTR)...
Abstract Background The negative effect of air pollution on human health is widely reported in recent literature. It typically involves urbanized areas where the population concentrated and most primary pollutants are produced. A comprehensive risk assessment therefore strategic importance for authorities. Methods In this study we propose a methodology to perform an indirect retrospective all-cause mortality associated with long-term exposure particulate matter less than 2.5 microns (PM ),...
Satellite-based remote sensing measurements of volcanic sulfur dioxide (SO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> ) provide critical information for reducing hazards. This paper describes the use SO from thermal infrared sounder IASI and UV-VIS instrument GOME-2 in services related to aviation hazard early warning unrest. The high sensitivity both instruments allows detection global tracking eruption plumes makes them a valuable...
Abstract. On 4 June 2011 an eruption of the Chilean volcano complex Puyehue–Cordón Caulle injected large amounts volcanic ash into atmosphere and affected local life as well hemisphere-wide air traffic. Observations Infrared Atmospheric Sounding Interferometer (IASI) flown on board MetOp satellite have been exploited to analyze evolution plume around Southern Hemisphere. A novel singular vector-based retrieval methodology, originally developed for observation desert dust over land ocean, has...
To assess and mitigate PM2.5 pollution, it is imperative to accurately characterize its spatiotemporal variability distribution. As station measurements are spatially selective, additional data sources such as satellite observations or chemical transport models (CTMs) indispensable for providing essential complementary information. With the increasing accessibility of high-quality reanalysis datasets on air pollutants from CTMs, use satellite-based with their limited spatial temporal...
The latest epidemiological studies have revealed that the adverse health effects of PM2.5 impacts beyond respiratory and cardio-vascular diseases also affect development brain metabolic diseases. need for accurate spatio-temporally resolved data has thus been substantiated. While selective information provided by station measurements is mostly insufficient area-wide monitoring, satellite increasingly applied to comprehensively monitor distributions. Although accuracy reliability...
On 8 and 9 July 2018 extensive observations were conducted under fair-weather conditions in the German city of Stuttgart its surroundings.This intensive observation period, part four weeks Urban Climate Under Change (UC) 2 campaign, intended to provide a comprehensive data set understand complex interactions thermally induced wind systems, vertical turbulent mixing air pollutant concentration distribution atmospheric boundary layer city.Stuttgart has very special topography with center...
An evaluation is made of ozone profiles retrieved from measurements the nadir‐viewing Global Ozone Monitoring Experiment (GOME) instrument. Currently, four different approaches are used to retrieve profile information GOME measurements, which differ in use external and a priori constraints. In total nine algorithms will be evaluated exploiting optimal estimation (Royal Netherlands Meteorological Institute, Rutherford Appleton Laboratory, University Bremen, National Oceanic Atmospheric...
Abstract Background Influenza seasonality has been frequently studied, but its mechanisms are not clear. Urban in-situ studies have linked influenza to meteorological or pollutant stressors. Few investigated rural and less polluted areas in temperate climate zones. Objectives We examined influences of medium-term residential exposure fine particulate matter (PM 2.5 ), NO 2 , SO air temperature precipitation on incidence. Methods To obtain complete spatial coverage Baden-Württemberg, we...
The existence of supraglacial lakes influences debris-covered glaciers in two ways. absorption solar radiation the water leads to a higher ice ablation, and draining through glacier its bed velocity. Rising air temperatures changes precipitation patterns provoke an increase number total area. However, seasonal evolution thus their potential for influencing mass balance dynamics have not yet been sufficiently analyzed. We present summertime series lake on Baltoro Glacier Karakoram from 2016...
Abstract. Lightning, one of the major sources nitrogen oxides (NOx) in atmosphere, contributes to tropospheric concentration ozone and oxidizing capacity atmosphere. Lightning produces between 2 8 Tg N yr−1 globally on average about 250 ± 150 mol NOx per flash. In this work, we estimate moles produced flash (LNOx production efficiency) Pyrenees (Spain, France Andorra) Ebro Valley (Spain) by using dioxide (NO2) cloud properties from TROPOspheric Monitoring Instrument (TROPOMI) as well...
Abstract When analyzing health data in relation to environmental stressors, it is crucial identify which variables include the statistical model exclude dependencies among variables. Four meteorological parameters: temperature, ultraviolet radiation, precipitation, and vapor pressure four outdoor air pollution ozone ( $$\text{O}_3$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mtext>O</mml:mtext> <mml:mn>3</mml:mn> </mml:msub> </mml:math> ), nitrogen dioxide...
Abstract. Volcanic eruptions can emit large amounts of rock fragments and fine particles (ash) into the atmosphere, as well several gases, including sulphur dioxide (SO2). These ejecta emissions are a major natural hazard, not only to local population, but also infrastructure in vicinity volcanoes aviation. Here, we describe methodology retrieve quantitative information about volcanic SO2 plumes from satellite-borne measurements UV/Visible spectral range. The combination satellite-based...
This paper examines the role of environmental taxes in reducing air pollution. Using unique satellite data to observe area-wide levels nitrogen dioxide (NO2), we leverage an emission tax introduction 2013 Comunidad Valenciana. We find that this reduced NO2 only modestly by 1.2%. While effect does not depend on prevalence dirty versus clean firms area, burden decreased more substantially areas with a higher density and innovative large firms. Overall, our results imply are very effective
Abstract. During the 2003 SAGE (Stratospheric Aerosol and Gas Experiment) III Ozone Loss Validation Experiment (SOLVE) II, fourteen-channel NASA Ames Airborne Tracking Sunphotometer (AATS-14) was mounted on DC-8 aircraft measured spectra of total aerosol optical depth (TOD AOD) during sunlit portions eight science flights. Values ozone column content above have been derived from AATS-14 measurements by using a linear least squares method that exploits differential absorption in seven...
Abstract. Glacial meltwater directly influences glacier dynamics. However, in the case of debris-covered glaciers, drivers velocity and influence supraglacial lakes have not yet been sufficiently analysed understood. We present a spatio-temporal analysis key characteristics for Baltoro Glacier Karakoram from October 2016 to September 2022 based on Earth observation data climate parameters extracted High Asia Refined (HAR) set. For variables, we used surface velocity, lake extent, melt snow...
Megacities have become global centers of industrial production, trade and innovation, but also energy consumption, atmospheric emissions air pollution. Despite several studies on NO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> changes in megacities, a systematic analysis relation to settlement growth is still pending. In addition, previous do not refer consistent spatial city concepts which distorts statistics the comparison. this...
An analysis of the severe weather event in November 2001 over western Mediterranean is presented focusing on satellite-based trace gas measurements from Global Ozone Monitoring Experiment (GOME) board European Remote Sensing Satellite (ERS-2).This study supplemented by a synoptic and simulations three-dimensional stratospheric chemical transport model ROSE.Arctic air masses moved rapidly Scandinavia to Iberian peninsula were mixed with subtropical still warm Sea.This caused thunderstorms...
Abstract MIPAS observations are assimilated using a modified version of the chemistry‐transport model ROSE to derive consistent global chemical analyses stratosphere. Due different retrieval schemes applied, available datasets expected differ in quality and coverage. In this study we investigate sensitivity data assimilation scheme two sample datasets. ENVISAT/MIPAS baseline H 2 O,O 3 ,HNO ,CH 4 ,N O NO , covering October–November 2003, considered. Sequential is performed an optimum...
Atmospheric sulfur dioxide is an important indicator of volcanic activity. Space based atmospheric sensors like GOME-2 on MetOp and OMI EOS-Aura make it possible to detect the emissions SO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> monitor activity eruptions a global scale. With GOME-2, track eruption plumes from passive degassing in near-real time (NRT). This particularly for early warning services, as increases fluxes are new...
Abstract. This paper presents the design and results of a novel approach to predict air pollutants in urban environments. The objective is create an artificial intelligence (AI)-based system support planning actors taking effective adequate short-term measures against unfavourable quality situations. In general, European cities has improved over past decades. Nevertheless, reductions particulate matter (PM), nitrogen dioxide (NO2) ground-level ozone (O3), particular, are essential ensure...
Abstract The total ozone column (TOC) is the most significant quantity for estimating erythemally effective UV radiation under clear sky conditions. Uncertainties in TOC measurements and a limited spatial temporal resolution therefore influence quality of calculated radiation. Index, internationally accepted measure radiation, used public media to inform about current levels builds base sun protection. Thus, accuracy promoted values essential. While preceding study we estimated measurement...