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    Comparing Surface and Mid-Tropospheric CO2 Concentrations from Central U.S. Grasslands

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    Mechem_et_al_ComparingSurface.pdf (302.2Kb)
    Issue Date
    2013-02-06
    Author
    Cochran, Ferdouz V.
    Brunsell, Nathaniel A.
    Mechem, David B.
    Publisher
    MDPI AG
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
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    Abstract
    Comparisons of eddy covariance (EC) tower measurements of CO2 concentration with mid-tropospheric observations from the Atmospheric Infrared Sounder (AIRS) allow for evaluation of the rising global signal of this greenhouse gas in relation to surface carbon dynamics. Using an information theory approach combining relative entropy and wavelet multi-resolution analysis, this study has explored correlations and divergences between mid-tropospheric and surface CO2 concentrations in grasslands of northeastern Kansas. Results show that surface CO2 measurements at the Kansas Field Station (KFS) and the Konza Prairie Biological Stations 1B (KZU) and 4B (K4B) with different land-cover types correlate well with mid-tropospheric CO2 in this region at the 512-day timescale between 2007 and 2010. Relative entropy further reveals that AIRS observations are indicative of surface CO2 concentrations for all land-cover types on monthly (32-day) and longer timescales. AIRS observations are also similar to CO2 concentrations at shorter timescales at sites KFS and K4B experiencing woody encroachment, though these results require further investigation. Differences in species composition and microclimate add to the variability of surface concentrations compared with mid-tropospheric observations.
    Description
    This is the publisher's version, also available electronically from http://www.mdpi.com/1099-4300/15/2/606
    URI
    http://hdl.handle.net/1808/14472
    DOI
    https://doi.org/10.3390/e15020606
    ISSN
    1099-4300
    Collections
    • Geography & Atmospheric Science Scholarly Works [199]
    Citation
    Cochran, Brunsell, Mechem.. (2013). Comparing surface and midtroposphere CO2concentrations from central U.S grasslands. Entropy 15:606-623. http://www.dx.doi.org/10.3390/e15020606

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    KU Libraries
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    Lawrence, KS 66045
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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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