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Feedback between dust particles and atmospheric processes over West Africa during dust episodes in March 2006 and June 2007
dust particles and atmospheric processes West Africa dust episodes March 2006 and June 2007
2010/11/30
We used the comprehensive model system COSMO-ART to quantify the impact of mineral dust on the radiative fluxes, the temperature and the feedback between dust particles and their emissions. We simulat...
Air mass origins influencing TTL chemical composition over West Africa during 2006 summer monsoon
Air mass origins TTL chemical composition West Africa 2006 summer monsoon
2010/11/30
Trace gas and aerosol data collected in the tropical tropopause layer (TTL) between 12–18.5 km by the M55 Geophysica aircraft as part of the SCOUT-AMMA campaign over West Africa during the summer mons...
Evidence of the impact of deep convection on reactive Volatile Organic Compounds in the upper tropical troposphere during the AMMA experiment in West Africa
deep convection reactive Volatile Organic Compounds the AMMA experiment West Africa
2010/11/29
A large dataset of reactive trace gases was collected for the first time over West Africa during the African Monsoon Multidisciplinary Analysis (AMMA) field experiment in August 2006. Volatile Organic...
The influence of biomass burning and transport on tropospheric composition over the tropical Atlantic Ocean and Equatorial Africa during the West African monsoon in 2006
biomass burning and transport tropospheric composition the tropical Atlantic Ocean and Equatorial Africa the West African monsoon
2010/10/21
Biomass burning (BB) in southern Africa is the largest emission source of CO and O3 precursors within Africa during the West African Monsoon (WAM) between June and August. The long range transport and...
Temporal variability of mineral dust concentrations over West Africa: analyses of a pluriannual monitoring from the AMMA Sahelian Dust Transect
Temporal variability mineral dust concentrations West Africa the AMMA Sahelian Dust Transect
2010/10/11
The Sahelian belt is known to be a region where atmospheric levels of suspended mineral dust are among the highest observed on Earth. In the framework of the AMMA (African Monsoon Multidisciplinary An...
The spatial distribution of mineral dust and its shortwave radiative forcing over North Africa: modeling sensitivities to dust emissions and aerosol size treatments
mineral dust shortwave radiative North Africa dust emissions aerosol size treatments
2010/9/21
A fully coupled meteorology-chemistry-aerosol model (WRF-Chem) is applied to simulate mineral dust and its shortwave (SW) radiative forcing over North Africa. Two dust emission schemes (GOCART and DUS...
Isoprene emissions modelling for West Africa: MEGAN model evaluation and sensitivity analysis
Isoprene emissions modelling West Africa MEGAN model
2010/9/21
Isoprene emissions are the largest source of reactive carbon to the atmosphere, with the tropics being a major source region. These natural emissions are expected to change with changing climate and h...
An introduction to the SCOUT-AMMA stratospheric aircraft,balloons and sondes campaign in West Africa,August 2006:rationale and roadmap
SCOUT-AMMA stratospheric aircraft balloons sondes campaign West Africa rationale roadmap
2010/3/5
A multi-platform field measurement campaign involving aircraft and balloons took place over West Africa between 26 July and 25 August 2006, in the frame of the concomitant AMMA Special Observing Perio...
Lightning characteristics observed by a VLF/LF lightning detection network (LINET) in Brazil, Australia, Africa and Germany
Lightning characteristics lightning detection network LINET Brazil Australia Africa Germany
2009/11/9
This paper describes lightning characteristics as obtained in four sets of lightning measurements during recent field campaigns in different parts of the world from mid-latitudes to the tropics by the...
Impact of dust aerosols on the radiative budget, surface heat fluxes, heating rate profiles and convective activity over West Africa during March 2006
dust aerosols surface heat fluxes convective activity West Africa
2009/9/27
The present work analyses the effect of dust aerosols on the surface and top of atmosphere radiative budget, surface temperature, sensible heat fluxes, atmospheric heating rate and convective activity...
Peroxy radical observations over West Africa during AMMA 2006: photochemical activity in the outflow of convective systems
Peroxy radical observations West Africa AMMA 2006 convective systems
2009/6/16
Peroxy radical measurements made on board the DLR-Falcon research aircraft over West Africa within the African Monsoon Multidisciplinary Analysis (AMMA) campaign during the 2006 wet monsoon are presen...
Out of Africa：High aerosol concentrations in the upper troposphere over Africa
Africa High aerosol concentrations upper troposphere
2009/3/11
In the year 2000, six flights (three southbound and three northbound) of the CARIBIC project were conducted between Germany and two destinations in the southern hemisphere (Windhoek, Namibia and Cape ...
Tropospheric ozone over Equatorial Africa: regional aspects from the MOZAIC data
Tropospheric ozone Equatorial Africa regional aspect MOZAIC
2009/2/5
We analyze ozone observations recorded over Equatorial Africa between April 1997 and March 2003 by the MOZAIC programme, providing the first ozone climatology deriving from continental in-situ data ov...
Temperature climatology and trend estimates in the UTLS region as observed over a southern subtropical site, Durban, South Africa
Temperature climatology UTLS region southern subtropical site Durban South Africa
2009/1/19
Temperature trends in the UTLS region are under-reported, particularly in the Southern Hemisphere, and yet temperature is one of the most important indicators of changes in dynamical and radiative pro...
Medium-range mid-tropospheric transport of ozone and precursors over Africa: two numerical case studies in dry and wet seasons
mid-tropospheric transport ozone Africa dry wet seasons
2008/12/23
A meso-scale model was used to understand and describe the dynamical processes driving high ozone concentrations observed during both dry and monsoon season in monthly climatologies profiles over Lago...