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Social and Behavioral Sciences Commons™
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Articles 1 - 4 of 4
Full-Text Articles in Social and Behavioral Sciences
Long-Range Correlations In Fourier Transform Infrared, Satellite, And Modeled Co In The Southern Hemisphere, Olaf Morgenstern, Guang Zeng, Stephen W. Wood, John Robinson, Dan Smale, Clare Paton-Walsh, Nicholas B. Jones, David W. T Griffith
Long-Range Correlations In Fourier Transform Infrared, Satellite, And Modeled Co In The Southern Hemisphere, Olaf Morgenstern, Guang Zeng, Stephen W. Wood, John Robinson, Dan Smale, Clare Paton-Walsh, Nicholas B. Jones, David W. T Griffith
Faculty of Science - Papers (Archive)
We use Fourier transfonn infrared ground-based measurements and satellite and model data to assess long-range correlations in tropospheric carbon monoxide. We fmd that CO columns measured in New Zealand correlate well with those measured in Antarctica, if a transport-related lag is taken into account. The model suggests that this long-range correlation is part of a mode of anomalous CO comprising almost the whole southern extratropics, which is linked to biomass burning in the southern continents. No such mode is modeled for the Northern Hemisphere. The area of long-range correlations maximizes for the southern subtropical Pacific, which is identified as an …
A Fourier Transform Infrared Trace Gas And Isotope Analyser For Atmospheric Applications, D W. T Griffith, N M. Deutscher, C Caldow, G Kettlewell, M Riggenbach, S Hammer
A Fourier Transform Infrared Trace Gas And Isotope Analyser For Atmospheric Applications, D W. T Griffith, N M. Deutscher, C Caldow, G Kettlewell, M Riggenbach, S Hammer
Faculty of Science - Papers (Archive)
Concern in recent decades about human impacts on Earth's climate has led to the need for improved and expanded measurement capabilities of greenhouse gases in the atmosphere. In this paper we describe in detail an in situ trace gas analyser based on Fourier Transform Infrared (FTIR) spectroscopy that is capable of simultaneous and continuous measurements of carbon dioxide (CO2), methane (CH4), carbon monoxide (CO), nitrous oxide (N2O) and 13C in CO2 in air with high precision. High accuracy is established by reference to measurements of standard reference gases. Stable water isotopes can …
Methane Retrievals From Greenhouse Gases Observing Satellite (Gosat) Shortwave Infrared Measurements: Performance Comparison Of Proxy And Physics Retrieval Algorithms, D Schepers, S Guerlet, A Butz, J Landgraf, C Frankenberg, O Hasekamp, J-F Blavier, N M. Deutscher, D W. T Griffith, F Hase, E Kyro, I Morino, V Sherlock, R Sussmann, I Aben
Methane Retrievals From Greenhouse Gases Observing Satellite (Gosat) Shortwave Infrared Measurements: Performance Comparison Of Proxy And Physics Retrieval Algorithms, D Schepers, S Guerlet, A Butz, J Landgraf, C Frankenberg, O Hasekamp, J-F Blavier, N M. Deutscher, D W. T Griffith, F Hase, E Kyro, I Morino, V Sherlock, R Sussmann, I Aben
Faculty of Science - Papers (Archive)
We compare two conceptually different methods for determining methane column-averaged mixing ratios (XCH4) from Greenhouse Gases Observing Satellite (GOSAT) shortwave infrared (SWIR) measurements. These methods account differently for light scattering by aerosol and cirrus. The proxy method retrieves a CO2 column which, in conjunction with prior knowledge on CO2 acts as a proxy for scattering effects. The physics-based method accounts for scattering by retrieving three effective parameters of a scattering layer. Both retrievals are validated on a 19-month data set using ground-based XCH4 measurements at 12 stations of the Total Carbon Column Observing Network (TCCON), …
Synchrotron Radiation Spectroscopic Techniques As Tools For The Medicinal Chemist: Microprobe X-Ray Fluorescence Imaging, X-Ray Absorption Spectroscopy, And Infrared Microspectroscopy, Carolyn Therese Dillon
Synchrotron Radiation Spectroscopic Techniques As Tools For The Medicinal Chemist: Microprobe X-Ray Fluorescence Imaging, X-Ray Absorption Spectroscopy, And Infrared Microspectroscopy, Carolyn Therese Dillon
Faculty of Science - Papers (Archive)
This review updates the recent advances and applications of three prominent synchrotron radiation techniques, microprobe X-ray fluorescence spectroscopy/imaging, X-ray absorption spectroscopy, and infrared microspectroscopy, and highlights how these tools are useful to the medicinal chemist. A brief description of the principles of the techniques is given with emphasis on the advantages of using synchrotron radiation-based instrumentation rather than instruments using typical laboratory radiation sources. This review focuses on several recent applications of these techniques to solve inorganic medicinal chemistry problems, focusing on studies of cellular uptake, distribution, and biotransformation of established and potential therapeutic agents. The importance of using these …