atmospheric trace gases
A kinetic chemistry tagging technique and its application to modelling the stable isotopic composition of atmospheric trace gases
... Abstract. Isotope composition, in many cases, holds unique information on the sources, chemical modification and sinks of atmospheric trace gases. Vital to the interpretation and use of an increasing ...
28
Towards imaging of atmospheric trace gases using Fabry–Pérot interferometer correlation spectroscopy in the UV and visible spectral range
... Abstract. Many processes in the lower atmosphere includ- ing transport, turbulent mixing and chemical conversions happen on timescales of the order of seconds (e.g. at point sources). Remote sensing of atmospheric ...
13
Atmospheric Trace Gases as Probes of Chemistry and Dynamics
... Based on limited rawinsonde and surface station data in 1970s, Madden and Julian [1971; 1972] speculated that the MJO is characterized by slowly eastward-propagating (~ 5 m/s), large-scale oscillations in tropical ...
132
Characteristics of Atmospheric Trace Gases, Particulate Matter and Heavy Metal Pollution in Karachi, Pakistan
... (2.9µg/m 3 ). The average Pb concentration varied from 1.1µg/m 3 at residential area (R-3) to 2.7µg/m 3 at commercial area (C-1) (Table-3). The lowest value among these thirteen locations was found at location R-3 ...
10
Ground-Based Measurements of Atmospheric Trace Gases in Beijing during the Olympic Games
... manmade trace gases have increasingly influenced atmospheric composition and produced great impacts on the atmospheric environment and global climate ...the trace gases as well ...
13
The impact of vibrational Raman scattering of air on DOAS measurements of atmospheric trace gases
... In the atmosphere, not only monochromatic light is scat- tered by air molecules, but rather a continuous incident light spectrum from the Sun. The solar spectrum is highly struc- tured by Fraunhofer lines. These spectral ...
21
Atmospheric trace gases support primary production in Antarctic desert surface soil
... Describe how sample size was determined. No statistical methods were used to predetermine sample sizes. Three biologically independent soil samples were collected from the two sampling sites, Robinson Ridge (December ...
19
Airborne multi-axis DOAS measurements of atmospheric trace gases on CARIBIC long-distance flights
... A great potential of these measurements is that any single flight offers the possibility of unexpected findings. Contin- ued work with the CARIBIC DOAS system will be based on making use of the newly gained spatial ...
14
Ground-based Measurements of Atmospheric Trace Gases in Beijing during the Olympic Games
... is a critical index used to characterize the performance of an FTS and has an important influence on the accuracy of trace gases retrieval. The ILS of B3M-IR is determined by measuring the transmission ...
13
On the attribution of contributions of atmospheric trace gases to emissions in atmospheric model applications
... Two methodologies have been compared, which calculate the contribution of an emission category, e.g. road traffic, industry, biomass burning, etc. on the atmospheric concen- tration of gases, which depend ...
13
Potential for the use of reconstructed IASI radiances in the detection of atmospheric trace gases
... Abstract. Principal component (PC) analysis has received considerable attention as a technique for the extraction of meteorological signals from hyperspectral infra-red sounders such as the Infrared Atmospheric ...
13
Uncovering the Metabolic Strategies of the Dormant Microbial Majority: towards Integrative Approaches
... sources. Atmospheric trace gases may be particularly desirable: while insuffi- ciently concentrated to support growth, they are dependable energy sources for persistence given their ubiquity and ...
5
Year-round retrievals of trace gases in the Arctic using the Extended-range Atmospheric Emitted Radiance Interferometer
... different atmospheric trace gases (for instance, millimeter- wave radiometers (MWRs) such as the Kiruna millimeter- wave radiometer (KIMRA); Raffalski et ...
17
Caution with spectroscopic NO2 reference cells (cuvettes)
... of atmospheric trace gases, for example, by differential optical absorption spec- troscopy (DOAS), are frequently supported by recording the trace-gas column density (CD) in absorption cells ...
14
Air–sea fluxes of greenhouse gases and oxygen in the northern Benguela Current region during upwelling events
... had atmospheric conditions that allowed for the detection of an anomaly in the atmospheric time ...cific atmospheric conditions (Risien et ...
20
Validation of reactive gases and aerosols in the MACC global analysis and forecast system
... In the near future more focus will be given to the evalua- tion of the MACC system in terms of trace gas and aerosol boundary conditions to regional air quality models. Suitable evaluation data sets and good ...
21
Estimating chemical composition of atmospheric deposition fluxes from mineral insoluble particles deposition collected in the western Mediterranean region
... of atmospheric deposition mass fluxes of nu- trients and trace metals in the western Mediterranean Sea is critical to understand the role of dust deposition on phy- toplankton ...of trace metals, we ...
13
FAIR v1.3: a simple emissions-based impulse response and carbon cycle model
... Most multi-model studies, such as the Coupled Model In- tercomparison Project (CMIP), which produces headline cli- mate projections for the Intergovernmental Panel on Climate Change (IPCC) assessment reports, compare ...
25
Continuous measurements of greenhouse gases and atmospheric oxygen at the Namib Desert Atmospheric Observatory
... trolyte. Atmospheric oxygen is reduced on the cathode, gen- erating a current which is the analytical ...reference gases or sample air are always made differentially against a dedicated reference cylinder ...
18
Mobile MAX-DOAS observations of tropospheric trace gases
... tropospheric trace gases and ...First, trace gases can be located at high altitudes above the instrument and are “seen” by the instrument at different horizontal dis- tances depending on the ...
12