Preprints
https://doi.org/10.5194/amt-2021-71
https://doi.org/10.5194/amt-2021-71

  24 Mar 2021

24 Mar 2021

Review status: a revised version of this preprint was accepted for the journal AMT and is expected to appear here in due course.

Introducing the MISR Level 2 Near Real-Time Aerosol Product

Marcin L. Witek, Michael J. Garay, David J. Diner, Michael A. Bull, Felix C. Seidel, Abigail M. Nastan, and Earl G. Hansen Marcin L. Witek et al.
  • Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA

Abstract. Atmospheric aerosols are an important element of Earth’s climate system, and have significant impacts on the environment and on human health. Global aerosol modeling has been increasingly used for operational forecasting and as support to decision making. For example, aerosol analyses and forecasts are routinely used to provide air quality information and alerts in both civilian and military applications. The growing demand for operational aerosol forecasting calls for additional observational data that can be assimilated into models to improve model accuracy and predictive skill. These factors have motivated the development, testing, and release of a new near real-time (NRT) level 2 (L2) aerosol product from the Multi-angle Imaging SpectroRadiometer (MISR) instrument on NASA’s Terra platform. The NRT product capitalizes on the unique attributes of the MISR aerosol retrieval approach and product contents, such as reliable aerosol optical depth as well as aerosol microphysical information. Several modifications are described that allow for rapid product generation within a three-hour window following acquisition of the satellite observations. Implications for the product quality and consistency are discussed as compared to the current operational L2 MISR aerosol product. Several ways of implementing additional use-specific retrieval screenings are also highlighted.

Marcin L. Witek et al.

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Review of MISR NRT AOD paper', Andrew Sayer, 02 Apr 2021
    • AC1: 'Reply on RC1', Marcin Witek, 27 Apr 2021
    • AC5: 'Reply on RC1', Marcin Witek, 25 May 2021
  • RC2: 'Comment on amt-2021-71', Anonymous Referee #2, 29 Apr 2021
    • AC2: 'Reply on RC2', Marcin Witek, 20 May 2021
    • AC3: 'Reply on RC2, part 2', Marcin Witek, 20 May 2021
      • RC3: 'Reply on AC3', Anonymous Referee #2, 20 May 2021
        • AC4: 'Reply on RC3', Marcin Witek, 25 May 2021
    • AC6: 'manuscript with tracking changes', Marcin Witek, 25 May 2021

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Review of MISR NRT AOD paper', Andrew Sayer, 02 Apr 2021
    • AC1: 'Reply on RC1', Marcin Witek, 27 Apr 2021
    • AC5: 'Reply on RC1', Marcin Witek, 25 May 2021
  • RC2: 'Comment on amt-2021-71', Anonymous Referee #2, 29 Apr 2021
    • AC2: 'Reply on RC2', Marcin Witek, 20 May 2021
    • AC3: 'Reply on RC2, part 2', Marcin Witek, 20 May 2021
      • RC3: 'Reply on AC3', Anonymous Referee #2, 20 May 2021
        • AC4: 'Reply on RC3', Marcin Witek, 25 May 2021
    • AC6: 'manuscript with tracking changes', Marcin Witek, 25 May 2021

Marcin L. Witek et al.

Marcin L. Witek et al.

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Short summary
This article documents development and testing of a new near real-time (NRT) aerosol product from the MISR instrument on NASA’s Terra platform. The NRT product capitalizes on the unique attributes of the MISR retrieval approach, which leads to high-quality and reliable aerosol data product. Several modifications are described that allow for rapid product generation within a three-hour window following acquisition. Implications for the product quality and consistency are discussed.