Questions tagged [atmospheric-chemistry]
The atmospheric-chemistry tag has no usage guidance.
23
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Dig in the rationality of model evaluation of WRF with land-based station data
I use WRF (Weather research and forecasting) model for in regional scale meteorology simulation. And then, the WRF output files will be deemed as criterial input data applying for chemical transport ...
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Kinetic or equilibrium fractionation from 2H and 18O in evaporation and condensation?
Is the isotope fractionation that occurs during evaporation of surface water equilibrium fractionation or kinetic fractionation? I mean, evaporation can be described by Rayleigh fractionation, but I ...
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How is the vertical distribution of water vapor changing?
In this publication about data assimilation and observations (paywall alert) in the chapter General Concepts in Meteorology and Dynamics (by Andrew Charlton-Perez, William Lahoz, Richard Swinbank, ...
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What are the benefits of direct sun viewing spectrometer over a backscatter measuring spectrometer to quantify trace gases in the atmosphere?
I am using a Pandora spectrometer and a MAX-DOAS spectrometer to quantify the amount of formaldehyde (HCHO) present in the troposphere and stratosphere in Fairbanks, Alaska. Both the spectrometers use ...
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What are 'sulphate particles' in the context of atmospheric chemistry?
This informative answer describes some processes in atmospheric chemistry and mentions "sulphate particles".
Actually I realize that I don't know what a 'sulphate particle' really is, though I've ...
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How to transform the inventory data from degrees to kilometers
First all, my question was different from the question Converting grid resolution from degrees to kilometers.
In chemical transport modeling, the pollutant source inventory was an essential input ...
- 2,449
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Why is the ozone layer in the northern hemisphere at lower altitudes than in the southern hemisphere?
Per this image shown below, the largest concentration of the ozone layer above the northern hemisphere is at a lower altitude than the largest concentration above the southern hemisphere. However, ...
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How to convert $\ce{NO2}$ mixing ratio (ppmv) into $\ce{NO2}$ column density(moles/m2)?
I have a WRF-chem output with NO2 mixing ratio for 37 levels, for my analysis I need to convert it into into column density. How do I do that?
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Do NO2 and O3 titrate each other out in the atmosphere?
Here is a plot of the vertical column densities of NO2 and O3 from an ultraviolet-visible spectrometer in Fairbanks, Alaska. It is interesting to see that when NO2 dips, O3 rises, and vice versa. Also,...
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The factors should be considered to determine one specific pollutant originated from regional transportation?
Ideally, one pollutant (e.g. organic carbon, heavy metals, sulfate) should be the mixed result of local emissions and regional transportation.
To quantify the contribution of local emissions is of ...
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What geographical areas are NOx sensitive/limited (with regard to ozone)?
Have there been any air quality modeling studies regarding the locations where ozone is considered "NOx limited" (increasing NOx increases ozone) or "NOx sensitive" (decreasing NOx increases ozone)? ...
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Correlation analysis with primary air pollutants and secondary formed ozone
The Ph.D dissertation Assessment of air quality in Northern China by using the
COSMO-ART model in conjunction with satellite and
ground-based data which was written by Stefanie Schrader in KIT German....
- 2,449
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What is the atmospheric percentage of oxygen produced by trees and phytoplankton every year?
I know that every year carbon sinks remove ~20Gt of CO2 (about half of our emissions), and release a comparable amount of O2 , But I want to know how much O2 the carbon sinks produce annually ...
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The differences on the atmospheric transportation for various trace metal in atmosphere
I have known that the atmospheric lifetimes of chemical species were highly dependent on their physicochemical properties. For example, $SO_2$ might exist for 5-8 days, while $NO_2$ could only exist ...
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The difficulties for the simulation of atmospheric metals
Atmospheric metals usually reside in aerosols with complex source origins. The concentrations distribution of metals especially for those with high toxicity (Pb, Cd, Ni, V) should be informative for ...
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Is there a conceptual diurnal model for ozone profile?
So i know that there are diurnal patterns for virtual potential temperature that can be described conceptually (such as $\frac{\partial \theta_v}{\partial z}\approx 0$ in the mixed layer and $\frac{\...
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When it comes the average lifetime of chemicals in the atmosphere, is the mean lifetime ~1.4427 times the half-life? As with radioactivity?
There are so many websites giving numbers for 'average' lifetimes of global-warming or ozone-depleting chemicals in the atmosphere, yet they are rarely explicit in their definition(s)...
For instance, ...
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To what extent does lightning produced NOx end up in the atmopsheric boundary layer?
Lightning produced NO$_{x}$ (emitted as NO but quickly converted to NO$_{2}$) can be one of the major sources of atmospheric NO$_{x}$ in the tropics [1]. Estimates of emissions per flash range from 10 ...
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How to analyze this data showing atomospheric CO2, CH4 and tempertures obtain from an ice sample?
Here is the chart:
My questions are:
Is the atmosphere in equilibrium over this record?
how would I determine what the maximum and minimum values for each
record is (approximation).
Is there a ...
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Is there any method to analysis the variation of chemical species removing the meteorology condition
Here is my question. The concentration of atmospheric species is decided by three major components:
The source related to natural or anthropology activities.
The chemical pathway of the formation ...
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Dry deposition of the total sulfate deposition in forested region
Sulfate is one important inorganic aerosol in the atmosphere. It's subject to removal by two main mechanisms.
Wet deposition which include rain/wash-out and cloud deposition.
Dry deposition ...
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What are the reaction mechanisms for singlet oxygen in the atmosphere?
Just as the production cycles of Ozone are dependent on the incident falling ultraviolet light and is fairly complex, I was wondering what the process of the production of singlet oxygen in the ...
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Can airplanes trigger rain?
A lady was telling me that the lower clouds were contrails left from plane exhausts. I looked up and there were none I could see in the sky she pointed to Stratocumulus Clouds. I did not want to tell ...
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