搜索结果: 1-10 共查到“大气化学 N2O”相关记录10条 . 查询时间(0.249 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...
UV absorption cross sections of nitrous oxide (N2O) and carbon tetrachloride (CCl4) between 210 and 350 K and the atmospheric implications
UV absorption nitrous oxide (N2O) carbon tetrachloride (CCl4) the atmospheric implications
2010/8/16
Absorption cross sections of nitrous oxide (N2O) and carbon tetrachloride (CCl4) are reported at five atomic UV lines (184.95, 202.548, 206.200, 213.857, and 228.8 nm) at temperatures in the range 210...
Regional N2O fluxes in Amazonia derived from aircraft vertical profiles
Regional N2O fluxes Amazonia aircraft vertical profiles
2009/12/3
Nitrous oxide (N2O) is the third most important anthropogenic greenhouse gas. Globally, the main sources of N2O are nitrification and denitrification in soils. About two thirds of the soil emissions o...
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...
The isotopic fingerprint of the pre-industrial and the anthropogenic N2O source
isotopic fingerprint pre-industrial anthropogenic N2O
2009/3/10
We have performed high-precision measurements of the 18O and position dependent 15N isotopic composition of N2O from Antarctic firn air samples. By comparing these data to simulations carried out with...
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...
On the ability of chemical transport models to simulate the vertical structure of the N2O, NO2 and HNO3 species in the mid-latitude stratosphere
chemical transport models vertical structure N2O HNO3 species mid-latitude stratosphere
2009/1/7
In this paper we study the impact of the modelling of N2O on the simulation of NO2 and HNO3 by comparing in situ vertical profiles measured at mid-latitudes with the results of the Reprobus 3-D CTM (T...
Measurements of NO, NOy, N2O, and O3 during SPURT: implications for transport and chemistry in the lowermost stratosphere
NO transport chemistry lowermost stratospher
2009/1/6
We present measurements of NO, NOy, O3, and N2O within the lowermost stratosphere (LMS) over Europe obtained during the SPURT project. The measurements cover all seasons between November 2001 and Jul...
Absolute rate constant and O(3P) yield for the O(1D)+N2O reaction in the temperature range 227 K to 719 K
Absolute rate constantl O(3P) yield O(1D)+N2O reaction
2008/11/24
The absolute rate constant for the reaction that is the major source of stratospheric NOx, O(1D)+N2O → products, has been determined in the temperature range 227 K to 719 K, and, in the temperature ra...
Mesospheric N2O enhancements as observed by MIPAS on Envisat during the polar winters in 2002–2004
N2O MIPAS polar winters
2008/11/21
N2O abundances ranging from 0.5 to 6 ppbv were observed in the polar upper stratosphere/lower mesosphere by the MIPAS instrument on the Envisat satellite during the Arctic and Antarctic winters in the...