Difference between revisions of "Talk:Discussion on Natural Organics over North America"

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Latest revision as of 08:45, October 7, 2009

From isoprene to aerosol -- GAnderson 11 August 2009

EPA/RPO Monitoring/Data Analysis: this is from an article in August 7 Science

Re: GAnderson: From isoprene to aerosol -- GAllen 11 August 2009

If anyone wants the original Science Mag research article, let me know.

Re: Re: From isoprene to aerosol -- Rhusar 11 August 2009

.. and the pattern of isoprene emissions inferred from satellite observations of formaldehyde is here.

Re: Re: Re: From isoprene to aerosol -- RPoirot 12 August 2009

…and which looks sort of like the pattern of upwind average (Donna Kenski method) aerosol OC from multiple IMPROVE and STN sites that you calculated and included as an illustration of an earlier version of the CATT users manual. When the data were constrained to only the highest percentile concentrations, the forest fire locations stood out, but looking at lower percentiles or average values, the southeast region (of apparently highest biogenic emissions) stands out. Could this be isoprene-related aerosol? OMI HCHO.png | CATT OCf.png

Earth Observatory image of the day on ozone precursors in the U.S -- Clynnes 12 August 2009

(July 2005) Mixingratio omi 200507.png | (September 2005) Mixingratio omi 200509.png
http://earthobservatory.nasa.gov/IOTD/view.php?id=39715&src=eoa-iotd

Re: Earth Observatory image of the day on ozone precursors in the U.S -- Rhusar 12 August 2009

Well, there is a bit more to the ozone formation than the Formaldehyde/NO2 ratio. Formaldehyde is just one of the organic reaction products, mostly from isoprene emission by trees. Most organics in the Eastern US are urban/industrial. Still, the CH2O/NO2 ratio is useful for the study of ozone from natural emissions.

Re: Re: Earth Observatory image of the day on ozone precursors in the U.S -- RScheffe 12 August 2009

I made a similar comment to Ernie H. when he presented this information at the ESIP meeting. But it really is good information and pretty insightful. The beauty of it is the availability of consistent data to construct the images.

Re: Re: Re: Earth Observatory image of the day on ozone precursors in the U.S -- Rhusar 16:08, 12 August 2009 (EDT)

Rich, indeed, how nice it would be if these satellite products (gases and aerosols) would be analyzed by a full array of experts ...from multiple perspectives. .. and then combining the wisdom.