Johannes Flemming
A5062518836- Atmospheric chemistry and aerosols
- Atmospheric and Environmental Gas Dynamics
- Atmospheric Ozone and Climate
- Air Quality and Health Impacts
- Atmospheric aerosols and clouds
- Air Quality Monitoring and Forecasting
- Meteorological Phenomena and Simulations
- Vehicle emissions and performance
- Climate variability and models
- Fire effects on ecosystems
- Geophysics and Gravity Measurements
- Climate Change and Health Impacts
- Ionosphere and magnetosphere dynamics
- COVID-19 impact on air quality
- Geochemistry and Geologic Mapping
- Urban Transport and Accessibility
- Earthquake Detection and Analysis
- Liver Disease Diagnosis and Treatment
- Water Quality Monitoring and Analysis
- Climate Change Policy and Economics
- Spacecraft and Cryogenic Technologies
- Global Health Care Issues
- Arctic and Russian Policy Studies
- Calibration and Measurement Techniques
- Laser-induced spectroscopy and plasma
Queen's University
2025
European Centre for Medium-Range Weather Forecasts
2015-2024
University Corporation for Atmospheric Research
2022
Global Services (Slovakia)
2022
Royal Netherlands Meteorological Institute
2021
Norwegian Meteorological Institute
2018
University of Colorado Boulder
2018
Forschungszentrum Jülich
2009
Met Office
2009
Freie Universität Berlin
2000-2006
Abstract Within the Copernicus Climate Change Service (C3S), ECMWF is producing ERA5 reanalysis which, once completed, will embody a detailed record of global atmosphere, land surface and ocean waves from 1950 onwards. This new replaces ERA‐Interim (spanning 1979 onwards) which was started in 2006. based on Integrated Forecasting System (IFS) Cy41r2 operational 2016. thus benefits decade developments model physics, core dynamics data assimilation. In addition to significantly enhanced...
Abstract. The Copernicus Atmosphere Monitoring Service (CAMS) reanalysis is the latest global dataset of atmospheric composition produced by European Centre for Medium-Range Weather Forecasts (ECMWF), consisting three-dimensional time-consistent fields, including aerosols and chemical species. currently covers period 2003–2016 will be extended in future adding 1 year each year. A greenhouse gases being separately. CAMS builds on experience gained during production earlier Atmospheric...
Abstract. An eight-year long reanalysis of atmospheric composition data covering the period 2003–2010 was constructed as part FP7-funded Monitoring Atmospheric Composition and Climate project by assimilating satellite into a global model assimilation system. This provides fields chemically reactive gases, namely carbon monoxide, ozone, nitrogen oxides, formaldehyde, well aerosols greenhouse gases globally at horizontal resolution about 80 km for both troposphere stratosphere. paper describes...
In September and October 2015 widespread forest peatland fires burned over large parts of maritime southeast Asia, most notably Indonesia, releasing amounts terrestrially-stored carbon into the atmosphere, primarily in form CO2, CO CH4. With a mean emission rate 11.3 Tg CO2 per day during Sept-Oct 2015, emissions from these exceeded fossil fuel release European Union (EU28) (8.9 day). Although seasonal are frequent occurrence human modified landscapes found extent was greatly inflated by an...
Abstract. Online coupled mesoscale meteorology atmospheric chemistry models have undergone a rapid evolution in recent years. Although mainly developed by the air quality modelling community, these are also of interest for numerical weather prediction and regional climate as they can consider not only effects on quality, but potentially important composition weather. Two ways online coupling be distinguished: integrated access coupling. simulate over same grid one model using main time step...
Abstract. A representation of atmospheric chemistry has been included in the Integrated Forecasting System (IFS) European Centre for Medium-Range Weather Forecasts (ECMWF). The new modules complement aerosol IFS composition, which is named C-IFS. C-IFS supersedes a coupled system chemical transport model (CTM) Model OZone and Related Tracers 3 was two-way to (IFS-MOZART). This paper contains description on-line implementation, an evaluation with observations comparison performance MOZART...
The Global and Regional Earth System Monitoring Using Satellite In Situ Data (GEMS) project is combining the manifold expertise in atmospheric composition research numerical weather prediction of 32 European institutes to build a comprehensive monitoring forecasting system for greenhouse gases, reactive aerosol, regional air quality. funded by Commission as part Environment Security (GMES) framework. GEMS has extended data assimilation Centre Medium-Range Weather Forecasts (ECMWF) include...
Abstract. Data assimilation is used in atmospheric chemistry models to improve air quality forecasts, construct re-analyses of three-dimensional chemical (including aerosol) concentrations and perform inverse modeling input variables or model parameters (e.g., emissions). Coupled meteorology (CCMM) are that simulate meteorological processes transformations jointly. They offer the possibility assimilate both data; however, because CCMM fairly recent, data has been limited date. We review here...
Abstract. A new global reanalysis data set of atmospheric composition (AC) for the period 2003–2015 has been produced by Copernicus Atmosphere Monitoring Service (CAMS). Satellite observations total column (TC) carbon monoxide (CO) and aerosol optical depth (AOD), as well several TC profile ozone, have assimilated with Integrated Forecasting System Composition (C-IFS) European Centre Medium-Range Weather Forecasting. Compared to previous Atmospheric Climate (MACC) (MACCRA), CAMS interim...
Abstract. This article describes the IFS-AER aerosol module used operationally in Integrated Forecasting System (IFS) cycle 45R1, operated by European Centre for Medium-Range Weather Forecasts (ECMWF) framework of Copernicus Atmospheric Monitoring Services (CAMS). We describe different parameterizations sources, sinks, and its chemical production IFS-AER, as well how aerosols are integrated larger atmospheric composition forecasting system. The focus is on entire 45R1 code base, including...
Abstract. This study provides a comprehensive assessment of NO2 changes across the main European urban areas induced by COVID-19 lockdowns using satellite retrievals from Tropospheric Monitoring Instrument (TROPOMI) onboard Sentinel-5p satellite, surface site measurements, and simulations Copernicus Atmosphere Service (CAMS) regional ensemble air quality models. Some recent TROPOMI-based estimates in atmospheric concentrations have neglected influence weather variability between reference...
Abstract The Copernicus Atmosphere Monitoring Service (CAMS), part of the European Union’s Earth observation program Copernicus, entered operations in July 2015. Implemented by Centre for Medium-Range Weather Forecasts (ECMWF) as a truly effort with over 23,500 direct data users and well 200 million end worldwide March 2022, CAMS delivers numerous global regional information products about air quality, inventory-based emissions observation-based surface fluxes greenhouse gases from biomass...
Abstract. We present a comparison of tropospheric NO2 from OMI measurements to the median an ensemble Regional Air Quality (RAQ) models, and intercomparison contributing RAQ models two global for period July 2008–June 2009 over Europe. The model forecasts were produced routinely on daily basis in context European GEMS ("Global regional Earth-system (atmosphere) Monitoring using Satellite in-situ data") project. vertical column shows spatial distribution which agrees well with observations,...
Abstract. Daily global analyses and 5-day forecasts are generated in the context of European Monitoring Atmospheric Composition Climate (MACC) project using an extended version Integrated Forecasting System (IFS) Centre for Medium-Range Weather Forecasts (ECMWF). The IFS now includes modules chemistry, deposition emission reactive gases, aerosols, greenhouse 4-dimensional variational data assimilation scheme makes use multiple satellite observations atmospheric composition addition to...
Abstract. The implementation and application of a newly developed coupled system combining ECMWF's integrated forecast (IFS) with global chemical transport models (CTMs) is presented. main objective the to enable IFS simulate key species without necessity invert complex source sink processes such as reactions, emission deposition. Thus satellite observations atmospheric composition can be assimilated into using its 4D-VAR algorithm. In system, simulates only species. CTM provides...
The eruption of the Eyjafjallajökull volcano, Iceland, in April and May 2010 caused unprecedented disruptions European air traffic showing that timely monitoring volcanic ash SO 2 dispersion as well corresponding plume heights are important for aviation safety. This paper describes observations BrO columns determination height using GOME‐2 satellite instrument. During eruptive period 2010, total up to ∼20 DU ∼7.7 × 10 13 molec/cm were detected. BrO/SO ratio estimated from varies 1.1 −4 2.1 ....
Abstract. Using observations from aircraft, surface stations and a satellite instrument, we comprehensively evaluate multi-model simulations of carbon monoxide (CO) ozone (O3) in the Arctic over lower latitude emission regions, as part POLARCAT Model Inter-comparison Project (POLMIP). Evaluation 11- atmospheric models with chemistry shows that they generally underestimate CO throughout troposphere, largest biases found during winter spring. Negative are also Northern Hemisphere, mean gross...
Abstract. Modern-Era Retrospective analysis for Research and Applications v.2 (MERRA-2), Copernicus Atmosphere Monitoring Service Operational Analysis (CAMS-OA), a high-resolution regional Weather Forecasting model coupled with chemistry (WRF-Chem) were used to evaluate natural anthropogenic particulate matter (PM) air pollution in the Middle East (ME) during 2015–2016. Two Moderate Resolution Imaging Spectrometer (MODIS) retrievals – combined product Deep Blue Target (MODIS-DB&DT)...
Editors note: For easy download the posted pdf of State Climate for 2013 is a very low-resolution file. A high-resolution copy report available by clicking here. Please be patient as it may take few minutes file to download.
Abstract. A model intercomparison activity was inspired by the large suite of observations atmospheric composition made during International Polar Year (2008) in Arctic. Nine global and two regional chemical transport models participated this performed simulations for 2008 using a common emissions inventory to assess differences chemistry schemes. This paper summarizes compares their ozone its precursors presents an evaluation variety surface, balloon, aircraft satellite observations. Each...
The cover shows a cropped image of the warming stripes (seen in full below), as developed by Ed Hawkins (Reading University, UK).Each vertical line global average temperature whole year, starting at 1850 on far left and ending with 2019 right.The underlying data are from HadCRUT4.6dataset UK Met Office Hadley Centre.To create other regions countries visit https://showyourstripes.
Abstract. The impact of air pollution on human health and the associated external costs in Europe United States (US) for year 2010 are modeled by a multi-model ensemble regional models frame third phase Air Quality Modelling Evaluation International Initiative (AQMEII3). surface concentrations O3, CO, SO2 PM2.5 used as input to Economic Valuation Pollution (EVA) system calculate resulting impacts from each individual model. Along with base case simulation, additional runs were performed...
Abstract A reanalysis data set produced by the Copernicus Atmosphere Monitoring service (CAMS reanalysis, 2003 to present day) augmented ERA5 for years before is used describe evolution of 2020 Arctic ozone season and compare it with back 1979. Ozone columns over large parts reached record low values in March April because an exceptionally strong, cold, persistent polar vortex. Minimum were below 250 DU most first half April, lowest 211 CAMS found on 18 March. Such are extremely unusual...