搜索结果: 1-8 共查到“大气化学 CH4”相关记录8条 . 查询时间(0.187 秒)
氧化亚氮（N2O）、甲烷（CH4）和二氧化碳（CO2）是大气中最重要的三种温室气体。基于湍流理论的涡动相关法是测量地气间温室气体交换通量的理想方法，该方法对生态系统干扰小，并可获得长时间序列的观测数据。然而，目前现有的基于涡动相关法的观测设备只能有效测量上述三种气体中的一种或至多两种气体的通量。王凯、王东（博士生）和郑循华所在的碳氮循环团队采用一台闭路量子级联激光（QCL）气体分析仪和相关设备配件...
Comparison of CMAM simulations of carbon monoxide（CO）, nitrous oxide（N2）, and methane（CH4）with observations from Odin/SMR, ACE-FTS, and Aura/MLS
CMAM simulations carbon monoxide nitrous oxide CH4 ACE-FTS Aura/MLS
2009/6/2
Simulations of CO, N2O and CH4 from a coupled chemistry-climate model (CMAM) are compared with satellite measurements from Odin Sub-Millimeter Radiometer (Odin/SMR), Atmospheric Chemistry Experiment F...
Effect of water addition and nitrogen fertilization on the fluxes of CH4, CO2, NOx, and N2O following five years of elevated CO2 in the Colorado Shortgrass Steppe
nitrogen fertilization CH4 CO2 NOx N2O Colorado Shortgrass Steppe
2009/3/11
An open-top-chamber (OTC) CO2 enrichment (~720 mmol mol-1) study was conducted in the Colorado shortgrass steppe from April 1997 through October 2001. Aboveground plant biomass increased under elevate...
Shipborne solar absorption measurements of CO2, CH4, N2O and CO and comparison with SCIAMACHY WFM-DOAS retrievals
Shipborne solar absorption measurements CO2 CH4 N2O CO SCIAMACHY WFM-DOAS retrievals
2009/2/13
CO, CH4, N2O and CO2 were retrieved from high resolution solar absorption spectra obtained during a ship cruise from Capetown to Bremerhaven in January/February 2003 by Fourier Transform Infrared (FTI...
Evidence for long-lived polar vortex air in the mid-latitude summer stratosphere from in situ laser diode CH4 and H2O measurements
long-lived polar vortex air mid-latitude summer stratosphere situ laser diode
2009/2/11
A balloon borne diode laser spectrometer was launched in southern France in June 2000 to yield in situ stratospheric CH4 and H2O measurements. In the altitude region ranging from 20km to 25km, strikin...
Iterative maximum a posteriori (IMAP)-DOAS for retrieval of strongly absorbing trace gases: Model studies for CH4 and CO2 retrieval from near infrared spectra of SCIAMACHY onboard ENVISAT
(IMAP)-DOAS trace gases CH4 CO2 infrared spectra SCIAMACHY onboard ENVISAT
2009/1/23
In the past, differential optical absorption spectroscopy (DOAS) has mostly been employed for atmospheric trace gas retrieval in the UV/Vis spectral region. New spectrometers such as SCIAMACHY onboard...
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 ...
Error analysis for CO and CH4 total column retrievals from SCIAMACHY 2.3 μm spectra
CO CH4 SCIAMACHY 2.3 μm spectra
2008/11/13
A detailed sensitivity analysis of the Iterative Maximum Likelihood Method (IMLM) algorithm and its application to the SCIAMACHY 2.3 μm spectra is presented. The sensitivity analysis includes a detail...