1. SeaDAS Training ~ NASA Ocean Biology Processing Group 1 SeaBASS: the SeaWiFS Bio-optical Archive and Storage System NASA Ocean Biology Processing Group Goddard Space Flight Center, Greenbelt, Maryland, USA SeaDAS Training Material

2. SeaDAS Training ~ NASA Ocean Biology Processing Group 2 local archive for bio-optical data & related oceanographic / atmospheric measurements data contributed by research groups from 45 institutions in 15 countries data uses include: (1) satellite ocean color data product validation (2) bio-optical algorithm development (3) climate, time series, and merger studies 45,000 data files from over 1,600 field campaigns, as of January 2008, including: (1) 35,000 radiometric (AOP) stations (2) 65,000 pigment (CHL) stations (3) 20,000 spectroscopy (IOP) stations (4) 16,500 aerosol optical thickness (AOT) stations all data are accessible online: (1) publicly available via SeaBASS Web site (2) periodically released to National Oceanographic Data Center see also: (1) SeaBASS NASA Technical Memorandum 211617, pp 45 (2002) (2) Werdell et al., EOS Transactions AGU 84, 38 (2003) (3) http://seabass.gsfc.nasa.gov/ What is SeaBASS?

3. SeaDAS Training ~ NASA Ocean Biology Processing Group 3 Where are the data?

4. SeaDAS Training ~ NASA Ocean Biology Processing Group 4 How do I acquire the data? visit http://seabass.gsfc.nasa.gov/ go to “Search Engines, Maps, & Tools” select the desired search engine : search enginepublic?returns?description bio-optical searchyesfilesaccess to all data pigment locatoryesvaluesaccess to all pigment data aerosol locatoryesvaluesaccess to all sun photometer data general searchyescruisesdescription of archived data cruise searchyescruisesdescription of archived data NOMADyesvaluesaccess to algorithm development & validation data

5. SeaDAS Training ~ NASA Ocean Biology Processing Group 5 How do I acquire the data?

6. SeaDAS Training ~ NASA Ocean Biology Processing Group 6 What is the format of the data?

7. SeaDAS Training ~ NASA Ocean Biology Processing Group 7 What is NOMAD? SeaBASS consists of original files from data collectors: radiometry,spectroscopy, pigments, and CTD all in separate files most data are depth-resolved  i.e., no surface (0-) values! lots of replicate data Realizing the difficulty in using these data for algorithm development, the OBPG: evaluated all SeaBASS radiometry, spectroscopy, pigments, and CTD estimated surface (0-) values from these data (used for validation!) identified coincident observations generated a consolidated, merged data set named this data set the NASA Marine bio-Optical Data-set (NOMAD) NOMAD is fully publicly available, as are its source data within SeaBASS: 3,467 coincident observations of Lw( ), Es( ), Kd( ), & Chl Wt, Sal, bb( ), and a( ) where available metadata includes date, location, & cruise name plus, NCDC OISST, NGDC ETOPO2, & processing flags Werdell & Bailey, Rem. Sens. Environ. 98, 122-140 (2005)

8. SeaDAS Training ~ NASA Ocean Biology Processing Group 8 Where are the NOMAD data?

9. SeaDAS Training ~ NASA Ocean Biology Processing Group 9 Are data available from the satellite Level-1/2 browser?

10. SeaDAS Training ~ NASA Ocean Biology Processing Group 10 Are data available from the satellite Level-1/2 browser?

11. SeaDAS Training ~ NASA Ocean Biology Processing Group 11 SeaBASS main page:http://seabass.gsfc.nasa.gov SeaBASS search engines:http://seabass.gsfc.nasa.gov/dataordering.html NOMAD:http://seabass.gsfc.nasa.gov/cgi-bin/nomad.cgi Email:seabass@seabass.gsfc.nasa.gov Contact information