A5006371239- Atmospheric aerosols and clouds
- Atmospheric chemistry and aerosols
- Aeolian processes and effects
- Atmospheric Ozone and Climate
- Climate variability and models
- Transboundary Water Resource Management
- Soil and Environmental Studies
- Health disparities and outcomes
- Marine and environmental studies
- Health, Environment, Cognitive Aging
- Geophysics and Gravity Measurements
- Solar Radiation and Photovoltaics
- Atmospheric and Environmental Gas Dynamics
- Solar Thermal and Photovoltaic Systems
- Air Quality Monitoring and Forecasting
- Earthquake Detection and Analysis
- Air Traffic Management and Optimization
- Bioinformatics and Genomic Networks
- Particle Dynamics in Fluid Flows
- Infrared Target Detection Methodologies
- Advanced Measurement and Detection Methods
- Ethics in Clinical Research
- Soil erosion and sediment transport
- Mental Health Research Topics
- Oil, Gas, and Environmental Issues
Leibniz Institute for Tropospheric Research
2016-2024
Drexel University
2024
Freie Universität Berlin
2022-2023
Imperial College London
2012-2017
Leibniz Association
2016
University of Oxford
2010
Abstract. New in-situ aircraft measurements of Saharan dust originating from Mali, Mauritania and Algeria taken during the Fennec 2011 campaign over a remote part Sahara Desert are presented. Size distributions extending to 300 μm shown, representing further into coarse mode than previously published for airborne dust. A significant was present in size distribution with effective diameter (deff) 2.3 19.4 volume median (dvc) 5.8 45.3 μm. The mean had larger relative proportion particles...
Abstract Urban-living individuals are exposed to many environmental factors that may combine and interact influence mental health. While individual of an urban environment have been investigated in isolation, no attempt has made model how complex, real-life exposure living the city relates brain health, this is moderated by genetic factors. Using data 156,075 participants from UK Biobank, we carried out sparse canonical correlation analyses investigate relationships between environments...
Abstract We describe observations from the Fennec supersite at Bordj Badji Mokhtar (BBM) made during June 2011 Intensive Observation Period. These are first detailed in situ of meteorology and dust central Sahara, close to center Saharan heat low summertime maximum. Historically, a shortage such has created problems for evaluating processes, models, remote sensing. There was monsoon influence BBM before 8 after 12 June, with dry Harmattan winds between. A split boundary layer, generated by...
Abstract. The Fennec climate programme aims to improve understanding of the Saharan system through a synergy observations and modelling. We present description airborne during 2011 2012 over remote Sahara (Mauritania Mali) advances in mineral dust boundary layer processes they have provided. Aircraft instrumentation aboard UK FAAM BAe146 French SAFIRE (Service des Avions Français Instrumentés pour la Recherche en Environnement) Falcon 20 is described, with specific focus on specially...
Four aerosol optical depth retrieval algorithms over the Sahara Desert during June 2011 from IASI, MISR, MODIS, and SEVIRI satellite instruments are compared against each other in order to understand strengths weaknesses of approach. Particular attention is paid effects meteorological conditions, land surface properties, magnitude dust loading. The period study corresponds time first Fennec intensive measurement campaign, which provides new ground-based aircraft measurements characteristics...
Abstract. The inter-annual variability of the dust aerosol presence over Red Sea and Persian Gulf is analysed period 2005–2015. Particular attention paid to variation in loading across Sea, which has previously been shown have a strong, seasonally dependent latitudinal gradient. Over 11 years considered, July mean 630 nm optical depth (AOD) derived from Spinning Enhanced Visible InfraRed Imager (SEVIRI) varies between 0.48 1.45 southern half Sea. In north, equivalent 0.22 0.66. temporal...
Abstract The formation of the Aralkum (Aral Desert), following severe desiccation former Aral Sea since 1960s, has created what may be regarded as one world's most significant anthropogenic dust sources. In this paper, focusing on emission and transport patterns from Aralkum, life‐cycle been simulated over Central Asia using aerosol model COSMO‐MUSCAT (COnsortium for Small‐scale MOdelling‐MUltiScale Chemistry Aerosol Transport Model), making use Global Surface Water data set to take into...
Abstract. In this study we attempted to better quantify radiative effects of dust over the Arabian Peninsula and their dependence on input parameters. For purpose have developed a stand-alone column radiation transport model coupled with Mie, T-matrix geometric optics calculations driven by reanalysis meteorological fields atmospheric composition. Numerical experiments were carried out for wide range aerosol optical depths, including extreme values during storm 18–20 March 2012....
Abstract. Infrared “Desert Dust” composite imagery taken by the Spinning Enhanced Visible and InfraRed Imager (SEVIRI), onboard Meteosat Second Generation (MSG) series of satellites above equatorial East Atlantic, has been widely used for more than a decade to identify track presence dust storms from over Sahara Desert, Middle East, southern Africa. Dust is characterised distinctive pink colours in Desert false-colour imagery; however, precise colour influenced numerous environmental...
Abstract. In the aerosol–climate model ECHAM6-HAM2, dust source activation (DSA) observations from Meteosat Second Generation (MSG) satellite are proposed to replace original area parameterization over Sahara Desert. The new setup is tested in nudged simulations for period 2007 2008. evaluation based on comparisons emission events inferred MSG index imagery, Aerosol Robotic Network (AERONET) sun photometer observations, and retrievals of aerosol optical thickness (AOT).The results agree well...
Ground-based and satellite observations are used in conjunction with the Rapid Radiative Transfer Model (RRTM) to assess climatological aerosol loading associated cloud-free direct radiative effect (DRE) over Red Sea. Aerosol optical depth (AOD) retrievals from Moderate Resolution Imaging Spectroradiometer Spinning Enhanced Visible InfraRed Imager (SEVIRI) instruments first evaluated via comparison ship-based observations. Correlations typically better than 0.9 very small root-mean-square...
Abstract. The summertime Sahara heat low (SHL) is a key component of the West African monsoon (WAM) system. Considerable uncertainty remains over relative roles water vapour and dust aerosols in controlling radiation budget therefore our ability to explain variability trends SHL, turn, WAM. Here, new observations from Fennec supersite-1 central during June 2011 2012, together with satellite retrievals GERB, are used quantify how total column (TCWV) (from aerosol optical depth, AOD) control...
Abstract. Satellite imagery of atmospheric mineral dust is sensitive to the optical properties dust, governed by refractive indices, particle size, and shape. In infrared channels also layer height surface environment. Simulations in Desert Dust from Spinning Enhanced Visible InfraRed Imager (SEVIRI) have been performed, using COSMO-MUSCAT (COSMO: COnsortium for Small-scale MOdelling; MUSCAT: MUltiScale Chemistry Aerosol Transport Model) transport model Radiative Transfer TOVS (RTTOV)...
We investigate mineral dust emission from alluvial sediments within the upland region in northern Mauritania vicinity of a decaying nocturnal low‐level jet (LLJ). For first time, impact valleys that are embedded rather homogeneous surrounding is investigated with regard to their role as source. Measures for local atmospheric burden were retrieved airborne observations, satellite and model simulations analyzed order provide complementary information at different horizontal scales....
Abstract. New in-situ aircraft measurements of Saharan dust originating from Mali, Mauritania and Algeria taken during the Fennec 2011 campaign over a remote part Sahara Desert are presented. Size distributions extending to 300 μm shown, representing further into coarse mode than previously published for airborne dust. A significant was present in size distribution with effective diameter (deff) 2.3 19.4 volume median (dvc) 5.8 45.3 μm. The mean had larger relative proportion particles...
Abstract The direct clear‐sky radiative effect (DRE) of atmospheric mineral dust is diagnosed over the Bordj Badji Mokhtar (BBM) supersite in central Sahara during Fennec campaign June 2011. During this period, thick events were observed, with aerosol optical depth values peaking at 3.5. Satellite observations from Meteosat‐9 are combined ground‐based flux measurements to obtain estimates DRE surface, top‐of‐atmosphere (TOA), and within atmosphere. At TOA, there a distinct daytime cycle net...
Abstract. The Fennec climate program aims to improve understanding of the Saharan system through a synergy observations and modelling. We present description airborne during 2011 2012 over remote Sahara (Mauritania Mali) advances in mineral dust boundary layer processes they have provided. Aircraft instrumentation aboard UK FAAM BAe146 French SAFIRE Falcon 20 is described, with specific focus on specially developed relevant meteorology dust. Flight locations, associated are described....
Solar cookers have the potential to help many of world's poorest people, but availability sunshine is critical, with clouds or heavy atmospheric dust loads preventing cooking. Using wood for cooking leads deforestation and air pollution that can cause exacerbate health problems. For poor obtaining either time-consuming expensive. Where conflicts led displaced shortages become acute, leading often violent clashes between locals refugees. refugee women, this makes collecting a high-risk...
Abstract. The inter-annual variability of dust aerosol presence over the Red Sea is analysed, with respect to summer-time latitudinal gradient in loading, which at a maximum far south and minimum north. Two satellite optical depth (AOD) products from Spinning Enhanced Visible Infrared Imager (SEVIRI) MODerate resolution Imaging Spectroradiometer (MODIS) instruments are used quantify this loading region. Over an eleven-year period 2005–2015 July mean SEVIRI AODs 630 nm vary between 0.48 1.45...
Abstract. In this study we attempted to better quantify radiative effects of dust over the Arabian Peninsula and their dependence on input parameters. For purpose have developed a standalone column radiation transport model coupled with Mie calculations driven by reanalysis meteorological fields atmospheric composition. Numerical experiments were carried out for wide range aerosol optical depths, including extreme values during storm 18–20 March 2012. Comprehensive ground-based observations...