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You are here: NODC Home > OCL Home > OCL Products > WOD01 > WOD01 Database changes

Changes from World Ocean Database 1998 (WOD98)
to World Ocean Database 2001 (WOD01)
There are four categories of changes made since WOD98:
Stations added since WOD98
.O. files contained observed measurements
               .S. files contained data interpolated to standard levels
Instrument Type Number of stations               Files
observed     standard
Ocean station data (OSD) 689442 new.O.OSD.gz new.S.OSD.gz
High-resolution CTD  (CTD)  119521 new.O.CTD.gz new.S.CTD.gz
Mechanical bathythermograph (MBT) 321618 new.O.MBT.gz new.S.MBT.gz
Expendable bathythermograph (XBT) 223307 new.O.XBT.gz new.S.XBT.gz
Moored buoy (MRB) 190526 (132 buoys) new.O.MRB.gz new.S.MRB.gz
Drifting buoy (DRB) 50549 (114 buoys) new.O.DRB.gz new.S.DRB.gz
Profiling floats (PFL) 22637 (469 floats) new.O.PFL.gz new.S.PFL.gz
Undulating ocean recorder (UOR) 37651  (83 tows) new.O.UOR.gz new.S.UOR.gz
Pinniped bathythermograph (APB) 75665  (9 animals) new.O.APB.gz new.S.APB.gz
Total stations: 1730916    
Surface-only (SURF) 1768994 measurements
(3514 cruises)		 new.SUR.gz

 
Stations with major changes since WOD98

Major changes are changes to position, date, depth of measurements and/or measured variables (excluding simple changes to the number of significant figures for a measurement).
MRB data was stored with XBT data in WOD98
Instrument Type Number
of stations		                      Files
observed                             standard
Ocean station data (OSD) 59255 changes.O.OSD.gz changes.S.OSD.gz
High-resolution CTD  (CTD) 4345 changes.O.CTD.gz changes.S.CTD.gz
Mechanical bathythermograph (MBT) 3709 changes.O.MBT.gz changes.S.MBT.gz
Expendable bathythermograph (XBT) 46286 changes.O.XBT.gz changes.S.XBT.gz
Moored buoy (MRB) 49 changes.O.MRB.gz changes.S.MRB.gz
Total stations 113644    

 
Stations removed since WOD98

These files contain the unique station numbers of stations removed since WODB98 version2
Instrument Type Number
of stations		 Files
Ocean station data (OSD) 55656 gone.NBD98v2.gz
- (NBD= station data from NODC archive as of 1994)

gone.BD98v2.gz
- (BD= other station data)
High-resolution CTD (CTD) 2688 gone.NCT98v2.gz
- (NCT= high-resolution CTD data from NODC archive as of 1994)

gone.CTD98v2.gz
- (CTD= other high-resolution CTD data)
Mechanical bathythermograph (MBT) 4764 gone.NMB98v2.gz
-  (NMB= MBT data from NODC archive as of 1994)

gone.MBT98v2.gz
- (MBT= other MBT data)
Expendable bathythermograph (XBT) 10353 gone.NXB98v2.gz
- (NXB= XBT data from NODC archive as of 1994)

gone.XBT98v2.gz
- (XBT= other XBT data)
Total stations 73461  

 
Stations moved

*The surface-only data moved from the Station Data file are listed in the gone.BD98v2 file and the data are included in the new.SUR file.  The unique station numbers no longer exist, as the storage form is different for surface-only data than for other data types (although the reading format is the same).
Instrument Type Number
of stations		 Files
from BD98v2/NBD98v2 to CTD 182 moved.BD98v2toCTD.gz
from BD98v2 to SUR 41650* moved.NBD98v2toCTD.gz
from XBT98v2 to MRB 107410 moved.XBT98v2toMRB.gz

 
 
 
 
 
 
 
 
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