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SeaWiFS Deep Blue Aerosol Optical Depth and Angstrom Exponent Level 2 Data V004 (SWDB_L2) at GES DISC

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Abstract: The SeaWiFS Deep Blue (SWDB) Level 2 Product contains data corresponding to a single SeaWiFS swath using Deep Blue algorithm. There are about 15 Level 2 data files produced per day. Each contains retrieved aerosol properties averaged to a resolution of 3x3 SeaWiFS pixels (13.5x13.5 km at the center of the swath given 4.5km SeaWiFS pixels).

The primary data parameters are aerosol optical ... View entire text
Related URL
Description: Access to the SeaWiFS Deep Blue Level 2 dataset by FTP.
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Caption:  Solar Zenith Angle (degrees)
Description:  Solar Zenith Angle from SeaWiFS Deep Blue Aerosol product, version 004 (SWDB_L2.004), 13.5 km x 13.5 at Equator, April 1 2001 11:59:34Z

Geographic Coverage
Spatial coordinates   
  N: 90.0   S: -90.0   E: 180.0   W: -180.0

Data Set Citation
Dataset Originator/Creator: N. Christina Hsu, Andrew M. Sayer, M.-J. Jeong, and Corey Bettenhausen
Dataset Title: SeaWiFS Deep Blue Aerosol Optical Depth and Angstrom Exponent Level 2 Data
Dataset Series Name: SWDB_L2
Dataset Release Date: July 1, 2013
Dataset Release Place: Greenbelt, MD, USA
Dataset Publisher: Goddard Space Flight Center Distributed Active Archive Center (GSFC DAAC)
Version: 004
Data Presentation Form: Digital Science Data
Other Citation Details:
Online Resource:
Temporal Coverage
Start Date: 1997-09-04
Stop Date: 2010-12-11
Data Resolution
Latitude Resolution: 13.5km
Longitude Resolution: 13.5km
Horizontal Resolution Range: 10 km - < 50 km or approximately .09 degree - < .5 degree
Temporal Resolution: 15 files/day
Temporal Resolution Range: Daily - < Weekly
Quality For analyses over land, it is recommend using only data with a confidence flag value of 3. For analyses over oceans, data with confidence flag values of 2 or 3 may be used.

Parameter “aerosol_optical_thickness_550_land_ocean_best_estimate” is recommended for the best quality of general use.
Data Set Progress
Originating Center
Data Center
Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA Supplemental Info
Data Center URL:

Data Center Personnel
Phone: 301-614-5224
Fax: 301-614-5268
Email: gsfc-help-disc at
Contact Address:
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA
Distribution Media: FTP/HTTP
Distribution Size: 5.1 MB per file
Distribution Format: HDF5
Fees: Free
Phone: 301-614-5383
Email: corey.bettenhausen at
Contact Address:
NASA Goddard Space Flight Center
Code 613.2
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA
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Sayer, A. M., N. C. Hsu, C. Bettenhausen, Z. Ahmad, B. N. Holben, A. Smirnov, G. E. Thomas, and J. Zhang (2012), SeaWiFS Ocean Aerosol Retrieval (SOAR): Algorithm, validation, and comparison with other data sets, J. Geophys. Res., 117, D03206, doi:10.1029/2011JD016599

Sayer, A. M., Hsu, N. C., Bettenhausen, C., Jeong, M.-J., Holben, B. N., and Zhang, J. (2012): Global and regional evaluation of over-land spectral aerosol optical depth retrievals from SeaWiFS, Atmos. Meas. Tech., 5, 1761-1778, doi:10.5194/amt-5-1761-2012
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2011-12-21
Last DIF Revision Date: 2016-01-20
Future DIF Review Date: 2016-06-30

Link to Web Site