A5091659615- Air Quality Monitoring and Forecasting
- Air Quality and Health Impacts
- Atmospheric chemistry and aerosols
- Atmospheric and Environmental Gas Dynamics
- Hydrology and Watershed Management Studies
- Urban Heat Island Mitigation
- Climate variability and models
- Hydrology and Sediment Transport Processes
- Atmospheric Ozone and Climate
- Climate change and permafrost
- Impact of Light on Environment and Health
- Vehicle emissions and performance
- Landslides and related hazards
- Neonatal Respiratory Health Research
- Groundwater flow and contamination studies
- Advanced Chemical Sensor Technologies
- Fish Ecology and Management Studies
- Pleural and Pulmonary Diseases
- Atmospheric aerosols and clouds
- Arctic and Antarctic ice dynamics
- Aquatic Ecosystems and Phytoplankton Dynamics
- Soil erosion and sediment transport
- Hepatitis B Virus Studies
- Cryospheric studies and observations
- Blood donation and transfusion practices
NILU
2016-2025
DRK Kliniken Berlin
2012-2024
Kjeller Innovasjon (Norway)
2014-2024
Universität Hamburg
2024
University Medical Center Hamburg-Eppendorf
2024
University Cancer Center Hamburg
2024
Nordic Institute for Studies in Innovation, Research and Education
2023
German Center for Lung Research
2023
Karlsruhe Institute of Technology
2022
University Hospital Heidelberg
2022
Abstract In this first worldwide synthesis of in situ and satellite‐derived lake data, we find that summer surface water temperatures rose rapidly (global mean = 0.34°C decade −1 ) between 1985 2009. Our analyses show warming rates are dependent on combinations climate local characteristics, rather than just location, leading to the counterintuitive result regional consistency is exception, rule. The most lakes widely geographically distributed, their associated with interactions among...
The emergence of low-cost, user-friendly and very compact air pollution platforms enable observations at high spatial resolution in near-real-time provide new opportunities to simultaneously enhance existing monitoring systems, as well engage citizens active environmental monitoring. This provides a whole set capabilities the assessment human exposure pollution. However, data generated by these are often questionable quality. We have conducted an exhaustive evaluation 24 identical units...
Surface temperatures were extracted from nighttime thermal infrared imagery of 167 large inland water bodies distributed worldwide beginning in 1985 for the months July through September and January March. Results indicate that mean surface temperature has been rapidly warming period 1985–2009 with an average rate 0.045 ± 0.011°C yr −1 rates as high 0.10 0.01°C . Worldwide data show far greater mid‐ latitudes northern hemisphere than low southern hemisphere. The analysis provides a new...
The recent emergence of low-cost microsensors measuring various air pollutants has significant potential for carrying out high-resolution mapping quality in the urban environment. However, data obtained by such sensors are generally less reliable than that from standard equipment and they subject to gaps both space time. In order overcome this issue, we present here a fusion method based on geostatistics allows merging observations network with spatial information an urban-scale model....
The 1st EuNetAir Air Quality Joint Intercomparison Exercise organized in Aveiro (Portugal) from 13th–27th October 2014, focused on the evaluation and assessment of environmental gas, particulate matter (PM) meteorological microsensors, versus standard air quality reference methods through an experimental urban monitoring campaign. IDAD-Institute Environment Development Mobile Laboratory was placed at traffic location city centre to conduct continuous measurements with equipment analysers for...
Abstract Global environmental change has influenced lake surface temperatures, a key driver of ecosystem structure and function. Recent studies have suggested significant warming water temperatures in individual lakes across many different regions around the world. However, spatial temporal coherence associated with magnitude these trends remains unclear. Thus, global data set temperature is required to understand synthesize global, long-term inland bodies water. We assembled database summer...
The very low-cost Nova particulate matter (PM) sensor SDS011 has recently drawn attention for its use measuring PM mass concentration, which is frequently used as an indicator of air quality. However, this not been thoroughly evaluated in real-world conditions and data quality well documented. In study, three sensors were by co-locating them at official, monitoring station equipped with reference-equivalent instrumentation Oslo, Norway. sensors’ measurement results PM2.5 compared generated...
The assumption that vegetation improves air quality is prevalent in scientific, popular, and political discourse. However, experimental modeling studies show the effect of green space on pollutant concentrations urban settings highly variable context specific. We revisited link between using satellite-derived changes from 2,615 established monitoring stations over Europe United States. Between 2010 2019, recorded declines ambient NO 2 , (particulate matter) PM 10 2.5 (average −3.14% y −1 ),...
Large lake temperatures are excellent indicators of climate change; however, their usefulness is limited by the paucity in situ measurements and lack long‐term data records. Thermal infrared satellite imagery has potential to provide frequent accurate retrievals surface spanning several decades on a global scale. Analysis seventeen years from Along‐Track Scanning Radiometer series sensors Moderate Resolution Imaging Spectroradiometer shows that six lakes situated California Nevada have...
Abstract. Trends in tropospheric nitrogen dioxide (NO2) columns over 66 large urban agglomerations worldwide have been computed using data from the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) instrument onboard Envisat platform period August 2002 to March 2012. A seasonal model including a linear trend was fitted satellite-based time series each site. The results indicate distinct spatial patterns trends. While Europe, North America, and some locations...
In Norway, children in kindergartens spend significant time outdoors under all weather conditions, and there is thus a natural concern about the quality of outdoor air. It well known that air pollution associated with wide variety adverse health impacts for children, greater impact on asthma. Especially during winter spring, Oslo are situated close to streets busy traffic, or areas where wood burning used house heating, can experience many days bad quality. During these periods, updated...
The increased availability of commercially-available low-cost air quality sensors combined with interest in their use by citizen scientists, community groups, and professionals is resulting rapid adoption, despite data concerns. We have characterized three out-the-box PM sensor systems under different environmental conditions, using field colocation against reference equipment. integrate Plantower 5003, Sensirion SPS30 Alphasense OCP-N3 sensors. first two photometry as a measuring technique,...
In this paper, the effect of lockdown measures on nitrogen dioxide (NO2) in Europe is analysed by a statistical model approach based generalised additive (GAM). The GAM designed to find relationships between various meteorological parameters and temporal metrics (day week, season, etc.) one hand level pollutants other. first trained measurement data from almost 2000 monitoring stations during 2015–2019 then applied same 2020, providing predictions expected concentrations absence lockdown....
Research communities, engagement campaigns, and administrative agents are increasingly valuing low-cost air-quality monitoring technologies, despite data quality concerns. Mobile sensors have already been used for delivering a spatial representation of pollutant concentrations, though less attention is given to their uncertainty quantification. Here, we perform static/on-bike inter-comparison tests assess the performance Snifferbike sensor kit in measuring outdoor PM2.5 (Particulate Matter <...
Satellite observations from instruments such as the TROPOspheric Monitoring Instrument (TROPOMI) show significant potential for monitoring spatiotemporal variability of NO2, however they typically provide vertically integrated measurements over tropospheric column. In this study, we introduce a machine learning approach entitled 'S-MESH' (Satellite and ML-based Estimation Surface air quality at High resolution) that allows estimating daily surface NO2 concentrations Europe 1 km spatial...
A global nine‐year archive of monthly tropospheric NO 2 data acquired by the SCanning Imaging Absorption spectroMeter for Atmospheric CartograpHY (SCIAMACHY) instrument was analyzed with respect to trends between August 2002 and 2011. In past, similar studies relied on combining from multiple sensors; however, length SCIAMACHY set now first time allows utilization a consistent series just single sensor mapping at comparatively high horizontal resolution (0.25°). This study provides an...
Abstract. River restoration has become a common measure to repair anthropogenically-induced alteration of fluvial ecosystems. The inherent complexity ecohydrologic systems leads limitations in understanding the response such over time. Therefore, significant effort been dedicated recent years worldwide document efficiency actions and produce new effective guidelines that may help overcoming existing deficiencies. At same time little attention was paid illustrate reasons use certain...
Abstract Over water, infrared radiometers on satellites measure radiation leaving from the surface skin layer and therefore retrieved temperature is representative of layer. This slightly different bulk deeper in water where various floating thermometers take measurements to validate satellite measurements. The difference between (skin effect) must be understood properly schemes that use infer temperatures. Further temperatures over inland waters may show patterns those oceans due...
Abstract. River restoration can enhance river dynamics, environmental heterogeneity and biodiversity, but the underlying processes governing dynamic changes need to be understood ensure that projects meet their goals, adverse effects are prevented. In particular, we comprehend how hydromorphological variability quantitatively relates ecosystem functioning services, biodiversity as well ground- surface water quality in restored corridors. This involves (i) physical structural properties,...