During the period 12 July - 8 August 2004, the NASA Ames 14-channel Airborne Tracking Sunphotometer (MTS-14) and Solar Spectral Flux Radiometer (SSFR) were operated aboard a Jetstream 31 (J31) aircraft and acquired measurements during nineteen science flights (approx. 53 flight hours) over the Gulf of Maine in support of the INTEX-NA (INtercontinental chemical Transport Experiment-North America) and ITCT (Intercontinental Transport and Chemical Transformation of anthropogenic pollution) field studies. In this paper, we will present results from analyses of those data sets. AATS-14 measures the direct solar beam transmission at fourteen discrete wavelengths (354-2138 nm), and provides instantaneous measurements of aerosol optical depth (AOD) spectra and water vapor column content, in addition to vertical profiles of aerosol extinction and water vapor density during suitable aircraft ascents and descents. SSFR consists of separate nadir and zenith viewing hemispheric FOV sensors that yield measurements of up- and downwelling solar irradiance at a spectral resolution of approx. 8-12 nm over the wavelength range 300-1700 nm. The objectives of the J31-based measurements during INTEX/ITCT were to provide AOD data for the evaluation of MODIS (MODerate-resolution Imaging Spectroradiometer) and MISR (Multi-angle Imaging Spectro-Radiometer) AOD retrievals, quantify sea surface spectral albedo (which can contribute the largest uncertainty to satellite aerosol retrievals for low aerosol loading), test closure (consistency) among suborbital results, test chemical-transport models using AOD profiles, and assess regional radiative forcing by combining satellite and suborbital results. Specific J31 flight patterns were designed to achieve these objectives, and they included a mixture of vertical profiles (spiral and ramped ascents and descents) and constant altitude horizontal transects at a variety of altitudes. Additional information is included in the original extended abstract.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Airborne Sunphotometer and Solar Spectral Flux Radiometer Measurements During INTEX/ITCT 2004


    Contributors:
    Russell, P. B. (author) / Pilewski, P. (author) / Redemann, J. (author) / Schmid, B. (author) / Kahn, R. (author) / Livingston, J. (author) / Chu, A. (author) / Eilers, J. (author) / Pommier, J. (author) / Howard, S. (author)

    Conference:

    Atmospheric Sciences and Air Quality Conference ; 2005 ; San Francisco, CA, United States


    Publication date :

    2005-01-01


    Type of media :

    Preprint


    Type of material :

    No indication


    Language :

    English




    Airborne Sunphotometer and Solar Spectral Flux Radiometer Measurements during INTEX/ITCT 2004

    P. B. Russell / P. Pilewskie / J. Redemann et al. | NTIS | 2005


    Airborne tracking sunphotometer apparatus and system

    Matsumoto, Yutaka / Mina, Cesar / Russell, Philip B. et al. | NTRS | 1987


    Measurements with an airborne, autotracking, external-head sunphotometer

    Russell, P. B. / Matsumoto, T. / Banta, V. J. et al. | NTRS | 1986


    Airborne sunphotometer for use with helicopters

    C. L. Walthall / R. N. Halthore / G. C. Elman et al. | NTIS | 1996


    An Airborne Sunphotometer for Use with Helicopters

    Walthall, C. L. / Halthore, R. N. / Elman, G. C. et al. | British Library Conference Proceedings | 1996