搜索结果: 1-15 共查到“大气科学 West Africa”相关记录21条 . 查询时间(0.086 秒)
Impact of deep convection in the tropical tropopause layer in West Africa: in-situ observations and mesoscale modelling
deep convection the tropical tropopause layer West Africa in-situ observations mesoscale modelling
2011/1/19
We present the analysis of the impact of convection on the composition of the tropical tropopause layer region (TTL) in West-Africa during the AMMA-SCOUT campaign. Geophysica M55 aircraft observations...
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...
HOx observations over West Africa during AMMA: impact of isoprene and NOx
HOx observations West Africa AMMA isoprene NOx
2010/10/11
Aircraft OH and HO2 measurements made over West Africa during the AMMA field campaign in summer 2006 have been investigated using a box model constrained to observations of long-lived species and phys...
Chemistry of rain events in West Africa: evidence of dust and biogenic influence in convective systems
Chemistry of rain events West Africa dust and biogenic influence convective systems
2010/10/11
This paper documents the chemical composition of 7 rain events associated with mesoscale convective systems sampled at the supersite of Banizoumbou, Niger, during the first special observation periods...
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 hydroxyl radical (OH) plays a key role in the oxidation of trace gases in the troposphere. However, observations of OH and the closely related hydroperoxy radical (HO2) have been sparse, especiall...
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...
Temporal and vertical variations of aerosol physical and chemical properties over West Africa: AMMA aircraft campaign in summer 2006
aerosol physical chemical properties West Africa AMMA aircraft campaign
2010/9/21
While the Sahelian belt in West Africa stretches in the border between the global hot-spots of mineral dust and biomass burning aerosols, the presence of West African Monsoon is expected to create sig...
Radiative heating rates profiles associated with a springtime case of Bodélé and Sudan dust transport over West Africa
Bodélé and Sudan dust Radiative heating rates West Africa
2010/9/14
The radiative heating rate due to mineral dust over West Africa is investigated using the radiative code STREAMER, as well as remote sensing and in situ observations gathered during the African Monsoo...
Chemical and aerosol characterisation of the troposphere over West Africa during the monsoon period as part of AMMA
Chemical and aerosol characterisation the troposphere West Africa the monsoon period
2010/8/25
During June, July and August 2006 five aircraft took part in a campaign over West Africa to observe the aerosol content and chemical composition of the troposphere and lower stratosphere as part of th...
Measurements of volatile organic compounds over West Africa
volatile organic compounds West Africa
2010/8/13
In this paper we describe measurements of volatile organic compounds (VOC) made using a Proton Transfer Reaction Mass Spectrometer (PTR-MS) aboard the UK Facility for Atmospheric Airborne Measurements...
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...
Corrigendum to“Peroxy radical observations over West Africa during AMMA 2006: photochemical activity in the outflow of convective systems”published in Atmos. Chem. Phys., 9, 3681–3695, 2009
Peroxy radical observations West Africa AMMA photochemical activity
2009/11/9
Corrigendum to“Peroxy radical observations over West Africa during AMMA 2006: photochemical activity in the outflow of convective systems”published in Atmos. Chem. Phys., 9, 3681–3695, 2009.