The figure above is a diagram of the system wiring. Data flows from the satellite dish through the communications room, to the final products that are distributed through the MBARI network. Detailed description of each of the components is below.
The Telonics PC is an HP Vectra 486/66 that communicates with FOAM via the recorder cable and the MBARI network. A critical maintenance component of this system is the PC clock. The PC clock controls the timing of the antenna controller and needs to be maintained within one or two seconds of accuracy. This clock wanders over time and should be checked every week. Data flowing in from the antenna flows into the PC which then feeds SeaWiFS data to the Orbital Sciences Ground Processor for decoding and AVHRR data directly to FOAM.
HRPTDI "Data Ingestion"
In the example below, the bottom line shows "off-line" . The "off-line" denotes that the system locked on to the satellite and received data. There is no evidence however that the data was backed up as planned The next line up shows "off-line off-line". Again the first "off-line" denotes that the system was successful in getting the data, and the second "off-line" denotes that the data was backed up to tape and is being stored. On the third line from the bottom, a pass is being processed. This is shown logically by "on-line (processing)". When the processing is complete, the screen will change to "off-line" or "off-line off-line" depending on the success of the operation. The top line indicates the next satellite to be received. "on Thurs., Feb. 19 at 18:45:34 (local)" Come back then and see it all run!
The Data Production window, handles the tape backup, the conversion of raw telemetry to L0 data, and AVHRR data products. When this window fails, the passes in the HRPTDI window will not have the (19) at the end, nor will they write "off-line" to tape. Restarting this window requires restarting the whole process. The system will then automaticaly start to process all of the unprocessed data (those not marked with 19) and attempt to write the raw files to tape. Due to the fact that processing takes less time than tape writing, not all of the passes will be written to tape. Check back after an hour or so to write the unwriten passes to tape manualy.
Logins and ASAPs
Right clicking on the mouse produces a pop up menu that allows new logins and ASAP's. Logins are Root, GAE, HRPT, and FORCAST. Root is reserved for systems administrators, GAE and FORECAST are logins for the Orbital Imaging System 9000 software. HRPT is the preferred login used for system maintenance. Selecting ASAP brings up a second pop up list that will re-start the HRPTDI process described above. This was once useful because the system had the hobby of dropping the Data Ingestion window.
Serge, Erich, Francisco, ect contact information available by clicking above.
Seawifs Satellite to L1A
L2 to Final Data Products
AVHRR to Final Data Products
/lrg ; Large SST and Albedo AVHRR gifs
/med ; Medium " "
/sml ; Small " "
/thumb ; Thumbnails
/idl ; IDL 5 and 5.1 files
/idl.bak ; IDL 5 backup files
/achive ; This directory structrue is physicaly on Tornado, and mirroed on Foam: /wif/seawif/
/data/L2 ; The GetL2, GetSST and runftp scripts plus 2 weeks of current data
/l1agen ; This is where the incoming Raw SeaWiFS LO and L1A data actualy resides
/L1a ; Empty
/L2 ; Most of the SeaDas scripts called by GetL2 here, plus the years S*.sub.map files
/L3 ; weekly cloro files
/1998 ; 1998 weekly chloro files
/monthly ; monthly chloro files
/moorings ; erichs mooring data programs
/file1 ; Mfiles and temp files to gather daily morring pixles
/file2 ; file1 is the first pass of the day, file 2 is second
/M1 ; temp files for M1 Mooring pixles
/M2 ; " "
/M3 ; " "
/seadas ; SeaDAS files
/tmpGlobalImages ; Empty
/updates ; Empty
/Carder_model ; Carder Chl and CDOM model
/eqpac ; SeaWifs Data for Equpac moorings
/G_S_model ; Garver-Siegel Fortran Chl and CDOM model
/GS_seawifs ; Garver-Siegel Fortran optimized for IDL
/pro_backup ; Backup
/prr ; From Chrimson, old data
/L2 ;Full L2 files from nasa
/L2_sub ; 1998 L2 sub.map files
/secret ; Files and programs pertaining to secret cruises
/Sst ; SST's From AVHRR
/L2_sst ;SST for MBARI sub-scene
/north ;SST northern portion of west coast
/south ;SST southern portion of west coast
/southc ; Cloud masks
/wif ;Old Chrimson data