Welcome to AEROCENTER
Aerosol research is one of the nine cross-cutting themes of the Earth Sciences Division at NASA's Goddard Space Flight Center. AeroCenter is an interdisciplinary union of researchers at NASA Goddard and other organizations in the Washington DC metropolitan area (including NOAA, University of Maryland, and other insititutions) who are interested in many facets of atmospheric aerosols. Interests include aerosol effects on radiative transfer, clouds and precipitation, climate, the biosphere, and atmospheric chemistry the aerosol role in air quality and human health; and the atmospheric correction of aerosol blurring of satellite imagery of the ground. Our regular activities include strong collaborations among aerosol community, informal weekly AeroCenter Forum (seminars, discussions, posters, and paper reviews) and annual aerosol research update.
AeroCenter seminar series
We hold biweekly seminars on aerosol-related topics. Seminars are on Tuesdays at 11:00 am at NASA Goddard Space Flight Center, building 33, room G133. If you are interested in showing your research during one of our seminars, please contact the AeroCenter committee:
We are pleased to announce that the ‘Deep Blue’ aerosol project now has its own website: http://deepblue.gsfc.nasa.gov/
The site is intended to act as a single resource for the various current and forthcoming Deep Blue satellite aerosol data products (e.g. SeaWiFS, MODIS, VIIRS). It includes information and links related to the data products, such as file formats, publications, and data access locations, as well as some background information on aerosols and aerosol remote sensing for the non-specialist. There is also an RSS feed, to which you can subscribe for updates relating to the project, such as new publications or data versions. The page was put together with the support of three interns from NASA’s high school internship program.
Please feel free to get in touch with Andy Sayer if you have any comments or questions about the website, or Deep Blue in general.
Sayer, A. M., N. C. Hsu, C. Bettenhausen, M.-J. Jeong, and G. Meister (2015), Effect of MODIS Terra radiometric calibration improvements on Collection 6 Deep Blue aerosol products: Validation and Terra/Aqua consistency, J. Geophys. Res. Atmos., 120, doi:10.1002/2015JD023878.
This paper describes the calibration updates applied to MODIS Terra between Collections 5 and 6 of the Deep Blue data set, which are a combination of the MCST calibration with additional radiometric gain/polarization corrections developed by the Ocean Biology Processing Group. It also covers the long-term stability of the mission to date (good) and consistency with Aqua (also good).
Sayer, A. M., N. C. Hsu, and C. Bettenhausen (2015), Implications of MODIS bow-tie distortion on aerosol optical depth retrievals, and techniques for mitigation, Atmos. Meas. Tech., 8, 5277-5288, doi:10.5194/amt-8-5277-2015.
This paper provides a description and illustration of the effects that the `bow-tie distortion', which is an across-track sampling distortion due to the scan geometry of MODIS and the curvature of the Earth's surface, has on AOD retrievals using Deep Blue and other algorithms. The paper also provides some potential techniques for the mitigation of this distortion's effects on these data sets. Although the bow-tie distortion has been published about since prior to the Terra launch, many users are not fully aware of the implications of this distortion, since they are not fully apparent from the L2 data products. This issue is becoming more relevant with the application of Deep Blue and other algorithms to sensors such as VIIRS which suffer different across-track distortions. It affects the spatial characteristics of the data sets differently, which has implications for data set continuity and comparability.
Dr. Yoram Kaufman
Download Aerocenter iCal file
The Aerocenter Calendar is compatible with Apple's iCal and other applications that can read V-Card formatted calendar files. To subscribe to the Aerocenter Calendar, use the following URL: http://aerocenter.gsfc.nasa.gov/ical/aerocenter.ics