Mixing Ratio
Methane flux, vertical gradient and mixing ratio measurements in a tropical forest
... canopy. No conclusive evidence for aerobic methane emissions from the canopy could be found, although some individual vertical profiles showed an increase in CH 4 mixing ratio from the middle to the top of ...
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An airborne amplitude-modulated 1.57 μm differential laser absorption spectrometry: simultaneous measurement of partial column-averaged dry air mixing ratio of CO<sub>2</sub> and target range
... storage of the components, including the electronics and optics. Moreover, the sys- tem achieves matching of the optical axes of multi-transmitted laser beams, which can contribute to reducing error due to footprint ...
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Impacts of an unknown daytime HONO source on the mixing ratio and budget of HONO, and hydroxyl, hydroperoxyl, and organic peroxy radicals, in the coastal regions of China
... HONO mixing ratios are usu- ally in low concentrations due to the strong photolysis of ...HONO mixing ratios that are unexpectedly higher than the theoretical steady value (∼ 10 ppt), in both urban and ru- ...
18
An estimation of the <sup>18</sup>O / <sup>16</sup>O ratio of UT/LMS ozone based on artefact CO in air sampled during CARIBIC flights
... CARIBIC-1 (Phase #1, abbreviated hereafter “C1”) was op- erational from November 1998 until April 2002 using a Boeing 767-300 ER operated by LTU International Airlines (Brenninkmeijer et al., 1999). Using a whole air ...
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EVALUATION OF CEMENT-BONDED PARTICLE BOARD PRODUCED FROM AFZELIA AFRICANA WOOD RESIDUES
... the fact that wood fibres are generally not used to improve the compression of wood-cement bonded composite, though a small improvement in strength may sometimes result from their use. The role of wood particles in ...
12
Intel Xeon Phi accelerated Weather Research and Forecasting (WRF) Goddard microphysics scheme
... mixing ratio of 5 hydrometeors (cloud water, cloud ice, rain water, snow, graupel/hail) in every time step using prognostic equation saturation process and microphysical in- teraction pr[r] ...
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CHEMICALS COMPOUNDS EMITTED BY COMMERCIAL PLANTATION AND THEIR RELATIONSHIP WITH THE LOCAL TROPOSPHERIC CHEMISTRY
... maximum mixing ratios of isoprene measured during five-day interval was detected at midday, with a higher value (8,3 ppbv) on November 29, ...the mixing ratio reached an average of 0,8 ppbv and ...
10
Dynamics of the moderately stable boundary layer
... water mixing ratio or potential temperature, was developed to characterize the coherent motions, ...local mixing and the coherent motion contributions, ...local mixing fraction of the flow is ...
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Ozone zonal asymmetry and planetary waves characterization during Antarctic spring
... GOMOS occultations. (The time period and the latitude band are selected to have the best data coverage and quality.) As seen in Fig. 6, perturbations on ozone number density, which are of nearly constant amplitude up to ...
25
Simulation of trace gases and aerosols over the Indian domain: evaluation of the WRF-Chem model
... parameters, mixing ratio of trace gases, aerosol optical depth, vertical extinction coefficient and BC concentrations, which are simulated using the WRF-chem model are compared with the observations ...
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Tropospheric water vapour and relative humidity profiles from lidar and microwave radiometry
... This study has presented water vapour measurements per- formed with Raman lidar and radiosondes during night- time at Granada. First, the methodology for obtaining wa- ter vapour mixing ratio profiles from ...
11
Observations of volcanic SO<sub>2</sub> from MLS on Aura
... Profiles of SO 2 mixing ratio for a day shortly after the the eruption of Soufrière hills, Montserrat, in 2006, and a day shortly after the eruption of Kasatochi in 2008. Profiles with[r] ...
40
Quasi-biennial oscillation of the tropical stratospheric aerosol layer
... ozone mixing ratio in the equatorial stratosphere (Hasebe, 1994; Butchart et ...aerosol mixing ratio exhibit such a phase reversal along isopleths of descending zonal mean zonal winds around ...
28
Methane as a diagnostic tracer of changes in the net circulation of the middle atmosphere
... 4 mixing ratio data as a function of pressure-altitude for 1992–2005 from the Halogen Occulta- tion Experiment (HALOE) aboard the Upper Atmosphere Research Satellite ...
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Estimating the contribution of bromoform to stratospheric bromine and its relation to dehydration in the tropical tropopause layer
... The other important level to be considered here is the cold point (at an altitude of about 17 km or about 380 K poten- tial temperature): air masses reaching the stratosphere need to be dehydrated to mixing ratios ...
7
A two-channel thermal dissociation cavity ring-down spectrometer for the detection of ambient NO<sub>2</sub>, RO<sub>2</sub>NO<sub>2</sub> and RONO<sub>2</sub>
... Figure 8. Measurements of the difference signal (TD cavity sam- pling from the 473 K inlet – NO 2 reference cavity) with various amounts of NO added and at two different PAN concentrations (0.74 and 7.40 ppbv). The error ...
24
Technical Note: Temporal change in averaging kernels as a source of uncertainty in trend estimates of carbon monoxide retrieved from MOPITT
... As a practical example based on the MOPITT data, we show that if the true atmospheric mixing ratio is continuously 50 % higher or lower than the a priori state, the temporal change of th[r] ...
22
Numerical uncertainty at mesoscale in a Lagrangian model in complex terrain
... Backward trajectories were calculated 4 times a day be- tween 17 and 19 May over 24 h from 108 different geograph- ical locations (every 5 grid cells in x direction, and every 10 grid cells in y direction) and at 3 ...
10
Statistical analysis of the precision of the Match method
... rate of chemical ozone destruction can be obtained by a statistical analysis of several tens of such match events. Information on the uncertainty of the calculated rate can be inferred from the scatter of the ozone ...
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Detection of pollution transport events southeast of Mexico City using ground-based visible spectroscopy measurements of nitrogen dioxide
... surface mixing ratio and remote sensing measure- ments at urban air pollution research sites in order to gain a more comprehensive understanding of air pollution is ...
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