1. Suhung Shen James G. Acker Denis Nadeau George Serafino Goddard Earth Sciences (GES) Data and Information Services Center (DISC) Distributed Active Archive Center (DAAC) NASA Goddard Space Flight Center Greenbelt, Maryland 20771 USA Introduction Ocean Color Data are measurements of the light intensity at visible wavelengths, which are related to the presence of phytoplankton and particles in the water. The data have been widely used to study marine optical properties, biological productivity, air-sea interaction, and for other research topics. The GES DISC DAAC has archived ocean color data from several different sensors, including the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) on OrbView-2 and the Coastal Zone Color Scanner (CZCS) on Nimbus 7. The SeaWiFS data are from September 1997 to present, available with two weeks delay from real-time. The CZCS data are available from October 1978 to June 1986. F WWW Browser: l Spatial and temporal searching l Viewing individual “browse” images l Selecting desired files l Ordering on-line documents F Subscription: l As data arrive, they are automatically placed in an order and sent to users l Frequent, regular requests (daily, weekly, monthly, annually) F Registration Required l Users of SeaWiFS data (including collaborators of research papers) are required to register with the SeaWiFS Project to become SeaWiFS Authorized Research Users F Username & Password Required l GES DISC DAAC issues a username and password to SeaWiFS Authorized Research Users F Data is FREE to authorized users  Charges Apply for Commercial Use of SeaWiFS Data F General Email: daacuso@daac.gsfc.nasa.gov F Ocean Color Email: ocean@daac.gsfc.nasa.gov F GES DISC DAAC Toll Free Help Desk: (1-877) 422-1222 F GES DISC DAAC Fax Line: (301) 614-5268  GES DISC DAAC Online: http://daac.gsfc.nasa.gov Access Data Online: http://daac.gsfc.nasa.gov http://daac.gsfc.nasa.gov/data/dataset/SEAWIFS/ Archive System and Distribution Statistics Subsets Data Archive & Distribution System ArchitectureSeaWiFS Data Monthly Archive/Distribution Volume Number of SeaWiFS Data OrdersCumulative Distributed Products Oracle Database Transfer Ingest Archive Validation Subscription Order Data Provider Users DAAC Web Ordering service EOSDIS service Data Clean Unix 1st2nd FTP Volume (GB) 1 st 2 nd 3 rd Indicates SeaWifS Project Global Reprocessing Regional Subsets of SeaWiFS HRPT Station Data (1 kilometer resolution data) Science Focus Web Page(s) (Compressed Volumes, to the end of December 2000) Total Distributed Volume: 23 TB L3 Daily 2164 GB L3 8-Day 2187 GB L2 GAC 2842 GB L1A GAC 3398 GB HRPT 8424 GB Poster Design and Production by Jenn Mahoney, 2001 SeaWiFS Image of Fires Near San Diego, California January 3, 2001 Los Angeles Salton Sea San Diego Channel Is. Chlorophyll Concentrations Off of the South Carolina Shoreline April 25, 1998 On April 25, 1998, the SeaWiFS instrument obtained a nearly cloud-free image of the U.S. East Coast. This image shows the chlorophyll concentrations in the ocean waters off the shoreline of South Carolina. Both the flow of the Gulf Stream and the related communities of marine phytoplankton are affected by the Charleston Bump. Data Access SeaWiFS Data Restrictions SeaWiFS Points of Contact CZCS Data Products Sample Imagery HNSG HROM HJMS HHOB HMBR SeaWiFS Data Products Coccolithophorid Blooms In the Bering Sea April 25, 1998 Global Biosphere of Northern Hemisphere Summer June 1998-August 1998 SeaWiFS Image September 15-16, 1997 Chlorophyll a Concentration (mg/m 3 ) Composite of all SeaWiFS land and ocean data acquired on September 15-16, 1997. Land and cloud are in “true color,” while derived ocean chlorophyll concentrations are colored as in the color scale..01.02.03.051235.1.2.3.51015203050