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一次新型液态CO2播撒效果的数值模拟
液态CO2播撒 微物理量 数值模拟
2009/1/19
利用三维积层混合云人工增雨数值模式对2002年7月11日的一次天气过程进行了由播撒液态CO2引起的微物理量变化及云动力影响的数值模拟。结果表明:播撒后,云中最大上升气流速度增大,由未播撒时的0.37 m/s增大到播撒后的0.54 m/s,播撒使云中出现最大上升速度W的时间比未播撒提前了4 min,表明播撒液态CO2影响了云的动力过程。同时与未播撒相比:云中雨水含量最大值由1.04 g/kg增加到1...
Comparisons between SCIAMACHY atmospheric CO2 retrieved using（FSI）WFM-DOAS to ground based FTIR data and the TM3 chemistry transport model
SCIAMACHY atmospheric CO2 FSI WFM-DOAS FTIR data TM3 chemistry transport model
2009/1/15
Atmospheric CO2 concentrations, retrieved from spectral measurements made in the near infrared (NIR) by the SCIAMACHY instrument, using Full Spectral Initiation Weighting Function Modified Differentia...
Evidence of systematic errors in SCIAMACHY-observed CO2 due to aerosols
systematic errors SCIAMACHY-observed CO2 aerosols
2009/1/14
SCIAMACHY CO2 measurements show a large variability in total column CO2 over the Sahara desert of up to 10%, which is not anticipated from in situ measurements and cannot be explained by results of at...
Atmospheric carbon gases retrieved from SCIAMACHY by WFM-DOAS: version 0.5 CO and CH4 and impact of calibration improvements on CO2 retrieval
Atmospheric carbon gases WFM-DOAS calibration improvements CO2 retrieval
2009/1/12
The three carbon gases carbon monoxide (CO), carbon dioxide (CO2), and methane (CH4) are important atmospheric constituents affecting air quality and climate. The near-infrared nadir spectra measured ...
Measurements of CO2, its stable isotopes, O2/N2, and 222Rn at Bern, Switzerland
Measurements of CO2 stable isotopes O2/N2 222Rn Switzerland
2009/1/8
A one-year time series of atmospheric CO2 measurements from Bern, Switzerland, is presented. O2/N2 and Ar/N2 ratios as well as stable carbon and oxygen isotopes of CO2 and δ29N2, δ34O2 and δ36Ar were ...
Comparisons between SCIAMACHY and ground-based FTIR data for total columns of CO, CH4, CO2 and N2O
SCIAMACHY ground-based FTIR data CO CH4 CO2 N2O
2009/1/8
Total column amounts of CO, CH4, CO2 and N2O retrieved from SCIAMACHY nadir observations in its near-infrared channels have been compared to data from a ground-based quasi-global network of Fourier-tr...
Modeling atmospheric CO2 concentration profiles and fluxes above sloping terrain at a boreal site
atmospheric CO2 concentration profiles sloping terrain
2008/12/31
CO2 fluxes and concentrations were simulated in the planetary boundary layer above subarctic hilly terrain using a three dimensional model. The model solves the transport equations in the local scale...
The effect of systematic measurement errors on atmospheric CO2 inversions: a quantitative assessment
systematic measurement errors atmospheric CO2 inversions quantitative assessment
2008/12/30
Surface-atmosphere exchange fluxes of CO2, estimated by an interannual atmospheric transport inversion from atmospheric mixing ratio measurements, are affected by several sources of errors, one of whi...
Corrigendum to "First direct observation of the atmospheric CO2 year-to-year increase from space" published in Atmos.
atmospheric CO2 space
2008/12/23
Corrigendum to "First direct observation of the atmospheric CO2 year-to-year increase from space" published in Atmos.
First direct observation of the atmospheric CO2 year-to-year increase from space
atmospheric CO2 space
2008/12/17
The reliable prediction of future atmospheric CO2 concentrations and associated global climate change requires an adequate understanding of the CO2 sources and sinks. The sparseness of the existing su...
The CO2 tracer clock for the Tropical Tropopause Layer
CO2 tracer clock Tropical Tropopause Layer
2008/12/15
Observations of CO2 were made in the upper troposphere and lower stratosphere in the deep tropics in order to determine the patterns of large-scale vertical transport and age of air in the Tropical T...
On using radon-222 and CO2 to calculate regional-scale CO2 fluxes
radon-222 CO2 regional-scale CO2
2008/12/15
Because of its ubiquitous release on land and well-characterized atmospheric loss, radon-222 has been very useful for deducing fluxes of greenhouse gases such as CO2, CH4, and N2O. It is shown here th...
Mesoscale circulations over complex terrain in the Valencia coastal region, Spain – Part 2: Modeling CO2 transport using idealized surface fluxes
Mesoscale circulations Valencia coastal region Spain Modeling CO2 transport surface fluxes
2008/12/5
Vertical profiles of CO2 concentration were collected during an intensive summer campaign in a coastal complex-terrain region within the frame of the European Project RECAB (Regional Assessment and Mo...
Technical Note: Long-term memory effect in the atmospheric CO2 concentration at Mauna Loa
atmospheric CO2 Mauna Loa
2008/12/1
The monthly mean values of the atmospheric carbon dioxide concentration derived from in-situ air samples collected at Mauna Loa Observatory, Hawaii, USA during 1958–2004 (the longest continuous recor...
Investigations of the photochemical isotope equilibrium between O2, CO2 and O3
photochemical isotope equilibrium O2 CO2 O3
2008/11/28
Contrary to tropospheric CO2 whose oxygen isotopic composition follows a standard mass dependent relationship, i.e. δ17O~0.5δ18O, stratospheric CO2 is preferentially enriched in 17O, leading to a stri...