搜索结果: 1-15 共查到“大气物理学 isoprene”相关记录23条 . 查询时间(0.086 秒)
North American isoprene influence on intercontinental ozone pollution
North American isoprene intercontinental ozone pollution
2011/2/25
Changing land-use and climate may alter emissions of biogenic isoprene, a key ozone (O3) precursor. Isoprene is also a precursor to peroxy acetyl nitrate (PAN) and thus affects partitioning among oxid...
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...
Cloud droplet activation of mixed organic-sulfate particles produced by the photooxidation of isoprene
Cloud droplet mixed organic-sulfate particles the photooxidation of isoprene
2010/8/12
The cloud condensation nuclei (CCN) properties of ammonium sulfate particles mixed with organic material condensed during the hydroxyl-radical-initiated photooxidation of isoprene (C5H8) were investig...
Measurements of OH and HO2 yields from the gas phase ozonolysis of isoprene
OH and HO2 yields gas phase ozonolysis isoprene
2010/2/21
The reactions of ozone with alkenes are an important source of hydroxyl (OH) radicals; however, quantification of their importance is hindered by uncertainties in the absolute OH yield. Hydroxyl radic...
Rapid formation of isoprene photo-oxidation products observed in Amazonia
Rapid formation isoprene photo-oxidation products Amazonia
2009/11/9
Isoprene represents the single most important reactive hydrocarbon for atmospheric chemistry in the tropical atmosphere. It plays a central role in global and regional atmospheric chemistry and possib...
Formation of secondary organic aerosol from isoprene oxidation over Europe
secondary organic aerosol isoprene oxidation Europe
2009/9/23
The role of isoprene as a precursor to secondary organic aerosol (SOA) over Europe is studied with the two-way nested global chemistry transport model TM5. The inclusion of the formation of SOA from i...
Isoprene oxidation by nitrate radical: alkyl nitrate and secondary organic aerosol yields
Isoprene oxidation nitrate radical alkyl nitrate secondary organic aerosol yields
2009/9/22
Alkyl nitrates and secondary organic aerosol (SOA) produced during the oxidation of isoprene by nitrate radicals has been observed in the SAPHIR (Simulation of Atmospheric PHotochemistry In a large Re...
The formation of secondary organic aerosol from the isoprene + OH reaction in the absence of NOx
secondary organic aerosol isoprene + OH reaction absence of NOx
2009/9/14
The reaction of isoprene (C5H8) with hydroxyl radicals has been studied in the absence of nitrogen oxides (NOx) to determine physical and chemical characteristics of the secondary organic aerosol form...
A review of Secondary Organic Aerosol (SOA) formation from isoprene
Secondary Organic Aerosol SOA isoprene
2009/8/7
Recent field and laboratory evidence indicates that the oxidation of isoprene, (2-methyl-1,3-butadiene, C5H8) forms secondary organic aerosol (SOA). Global biogenic emissions of isoprene (600 Tg yr...
Flux estimates of isoprene, methanol and acetone from airborne PTR-MS measurements over the tropical rainforest during the GABRIEL 2005 campaign
Flux estimates isoprene methanol airborne PTR-MS tropical rainforest
2009/7/15
Tropical forests are a strong source of biogenic volatile organic compounds (BVOCs) to the atmosphere which can potentially impact the atmospheric oxidation capacity. Here we present airborne and grou...
Nocturnal isoprene oxidation over the Northeast United States in summer and its impact on reactive nitrogen partitioning and secondary organic aerosol
Nocturnal isoprene oxidation Northeast United States reactive nitrogen partitioning secondary organic aerosol
2009/5/15
Isoprene is the largest single VOC emission to the atmosphere. Although it is primarily oxidized photochemically during daylight hours, late-day emissions that remain in the atmosphere at sunset under...
Reactions of isoprene and sulphoxy radical-anions – a possible source of atmospheric organosulphites and organosulphates
isoprene sulphoxy radical-anions atmospheric organosulphites organosulphates
2009/3/31
Transformation of isoprene coupled with auto-oxidation of SIV in aqueous solutions was studied experimentally and by chemical-kinetic modelling over a broad range of solution acidities (pH=3–9) to com...
Isoprene photooxidation: new insights into the production of acids and organic nitrates
Isoprene photooxidation new insights acids and organic nitrates
2009/3/13
We describe a nearly explicit chemical mechanism for isoprene photooxidation guided by chamber studies that include time-resolved observation of an extensive suite of volatile compounds. We provide ne...
Airborne observations of total RONO2: new constraints on the yield and lifetime of isoprene nitrates
Airborne observations yield lifetime isoprene nitrates
2009/3/13
Formation of isoprene nitrates (INs) is an important free radical chain termination step ending production of ozone and possibly affecting formation of secondary organic aerosol. Isoprene nitrates als...
Sensitivities in global scale modeling of isoprene
Sensitivities global scale modeling isoprene
2009/2/20
A sensitivity study of the treatment of isoprene and related parameters in 3D atmospheric models was conducted using the global model of tropospheric chemistry MATCH-MPIC. A total of twelve sensitivit...