搜索结果: 1-15 共查到“大气化学 Africa”相关记录20条 . 查询时间(0.049 秒)
Fires Burning in Africa&Asia Cause High Ozone in Tropical Pacific（图）
Fires Africa Asia High Ozone Tropical Pacific
2016/2/22
While efforts to limit ozone precursor emissions tend to focus on industrial activities and fossil fuel combustion in the United States and China, a new University of Maryland-led study suggests that ...
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...
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...
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...
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...
Long term measurements of sulfur dioxide, nitrogen dioxide, ammonia, nitric acid and ozone in Africa using passive samplers
sulfur dioxide nitrogen dioxide ammonia nitric acid ozone Africa passive samplers
2010/8/16
In this paper we present the long term monitoring of ambient gaseous concentrations within the framework of the IDAF (IGAC-DEBITS-AFRICA) program. This study proposes for the first time an analysis of...
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...
Aerosol characterization in Northern Africa, Northeastern Atlantic, Mediterranean Basin and Middle East from direct-sun AERONET observations
Aerosol characterization Northern Africa Northeastern Atlantic Mediterranean Basin Middle East direct-sun AERONET observations
2009/11/19
We provide an atmospheric aerosol characterization for North Africa, Northeastern Atlantic, Mediterranean and Middle East based on the analysis of quality-assured direct-sun observations of 39 station...
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.
Vertical structure of aerosols and water vapor over West Africa during the African monsoon dry season
Vertical structure water vapor West Africa African monsoon dry season
2009/11/9
We present observations of tropospheric aerosol and water vapor transport over West Africa and the associated meteorological conditions during the AMMA SOP-0 dry season experiment, which was conducted...
The influence of biogenic emissions from Africa on tropical tropospheric ozone during 2006: a global modeling study
biogenic emissions Africa tropical tropospheric ozone
2009/8/18
We have performed simulations using a 3-D global chemistry-transport model to investigate the influence that biogenic emissions from the African continent exert on the composition of the troposphere i...
Significant variations of trace gas composition and aerosol properties at Mt. Cimone during air mass transport from North Africa – contributions from wildfire emissions and mineral dust
trace gas composition North Africa wildfire emissions mineral dust
2009/7/22
High levels of trace gas (O3 and CO) and aerosol (BC, fine and coarse particle volumes), as well as high scattering coefficient (σp) values, were recorded at the regional GAW-WMO station of Mt. Cimone...