搜索结果: 1-15 共查到“大气物理学 Estimates”相关记录17条 . 查询时间(0.099 秒)
Multi-annual changes of NOx emissions in megacity regions: nonlinear trend analysis of satellite measurement based estimates
NOx emissions megacity regions nonlinear trend analysis satellite measurement
2010/9/21
Hazardous impact of air pollutant emissions from megacities on atmospheric composition on regional and global scales is currently an important issue in atmospheric research. However, the quantificatio...
Quantitative estimates of the volatility of ambient organic aerosol
ambient organic aerosol a tandem thermodenuder-aerosol mass spectrometer system Mexico City
2010/8/13
Measurements of the sensitivity of organic aerosol (OA, and its components) mass to changes in temperature were recently reported by Huffman et al.~(2009) using a tandem thermodenuder-aerosol mass spe...
Estimates of biomass burning emissions in tropical Asia based on satellite-derived data
Estimates biomass burning emissions tropical Asia satellite-derived data
2010/3/16
Biomass burning in tropical Asia emits large amounts of trace gases and particulate matter into the atmosphere, which has significant implications for atmospheric chemistry and climatic change. In thi...
Global estimates of CO sources with high resolution by adjoint inversion of multiple satellite datasets（MOPITT, AIRS, SCIAMACHY, TES）
CO sources MOPITT AIRS SCIAMACHY TES
2010/2/1
We combine CO column measurements from the MOPITT, AIRS, SCIAMACHY, and TES satellite instruments in a full-year (May 2004–April 2005) global inversion of CO sources at 4°×5° spatial resolution and mo...
Comparison of conventional Lagrangian stochastic footprint models against LES driven footprint estimates
conventional Lagrangian stochastic footprint models LES footprint estimates
2009/8/7
In this study we introduce a comparison method for footprint model results by evaluating the performance of conventional Lagrangian stochastic (LS) footprint models that use parameterised flow field c...
Accurate satellite-derived estimates of the tropospheric ozone impact on the global radiation budget
Accurate satellite-derived estimates tropospheric ozone global radiation budget
2009/7/15
Estimates of the radiative forcing due to anthropogenically-produced tropospheric O3 are derived primarily from models. Here, we use tropospheric ozone and cloud data from several instruments in the A...
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...
The impact of mid-latitude intrusions into the polar vortex on ozone loss estimates
mid-latitude intrusions polar vortex ozone loss estimates
2009/3/10
Current stratospheric chemical model simulations underestimate substantially the large ozone loss rates that are derived for the Arctic from ozone sondes for January of some years. Until now, no expla...
Daily CO2 flux estimates over Europe from continuous atmospheric measurements: 1, inverse methodology
Daily CO2 flux estimates Europe inverse methodology
2009/2/19
This paper presents an inverse method for inferring trace gas fluxes at high temporal (daily) and spatial (model grid) resolution from continuous atmospheric concentration measurements. The method is ...
Estimates of lightning NOx production from GOME satellite observations
lightning NOx production GOME satellite
2009/2/17
Tropospheric NO2 column retrievals from the Global Ozone Monitoring Experiment (GOME) satellite spectrometer are used to quantify the source strength and 3-D distribution of lightning produced nitroge...
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...
Aerosol direct radiative effects over the northwest Atlantic, northwest Pacific, and North Indian Oceans: estimates based on in-situ chemical and optical measurements and chemical transport modeling
Aerosol direct radiative effects the northwest Atlantic northwest Pacific North Indian Oceans in-situ chemical and optical measurements chemical transport modeling
2009/1/7
The largest uncertainty in the radiative forcing of climate change over the industrial era is that due to aerosols, a substantial fraction of which is the uncertainty associated with scattering and ab...
SCIAMACHY tropospheric NO2 over Switzerland: estimates of NOx lifetimes and impact of the complex Alpine topography on the retrieval
SCIAMACHY tropospheric NO2 Switzerland NOx lifetimes complex Alpine topography
2008/12/26
This study evaluates NO2 vertical tropospheric column densities (VTCs) retrieved from measurements of the Scanning Imaging Absorption Spectrometer for Atmospheric Chartography (SCIAMACHY) above Switze...
Process-based estimates of terrestrial ecosystem isoprene emissions: incorporating the effects of a direct CO2-isoprene interaction
terrestrial ecosystem isoprene emissions CO2-isoprene
2008/11/27
In recent years evidence has emerged that the amount of isoprene emitted from a leaf is affected by the CO2 growth environment. Many – though not all – laboratory experiments indicate that emissions i...
Why are estimates of global terrestrial isoprene emissions so similar（and why is this not so for monoterpenes）?
terrestrial isoprene emissions monoterpenes
2008/11/14
Emissions of biogenic volatile organic compounds (BVOC) are a chief uncertainty in calculating the burdens of important atmospheric compounds like tropospheric ozone or secondary organic aerosol, refl...