SeaKeeper 1000™ Data Records and Associated Metadata
There are two ranges that are used to determine the first level quality of the acquired data. One range is the reasonable range for each variable. This says whether the data is reasonable from a scientific point of view. It does not take into account spatial, temporal, or statistical considerations. The other range is the physically possible range for each variable. This is a reflection of the physical constraints due to geometry or sensor design.
| Variable |
Unit of Measure |
Accuracy +/- |
Resolution |
Reasonable Range |
Physical Range |
DATE/TIME/LOCATION STAMP |
| Date |
MM/DD/YYYY |
± .013 sec |
.001 sec |
MM [1-12]/DD [1-31]/ YYYY [2000-2009] |
| UTC time |
HH:MM:SS |
± .013 sec |
.001 sec |
0 to 23 hours |
0 to 23 hours |
| Latitude |
Degrees |
± .02 minutes |
.001 minutes |
[-80 , 80] |
[-90 , 90] |
| Longitude |
Degrees |
± .02 minutes |
.001 minutes |
[-180 , 180] |
[-180 , 180] |
| Variable |
Code |
Type |
Unit of Measure |
Accuracy +/- |
Resolution |
Reasonable Range |
Physical Range |
OCEAN DATA |
| Cell Pressure |
CP |
IV |
Decibars |
± 0.1 |
0.01 |
[0 , 20] |
[0 , 30] |
| Cell Temperature (Internal) |
CT |
IV |
°C |
± 0.003 |
0.001 |
[-1.8 , 45] |
[-1.8, 45] |
| Conductivity |
CND |
IV |
mmho/cm |
± 0.003 |
0.001 |
[0 , 75] |
[0 , 75] |
| Sea Surface Salinity (Calc) |
SLN |
P |
psa (practical salinity units) |
± 0.006 |
0.001 |
[0 , 45] |
[0 , 45] |
| Oxygen Saturation |
O2S |
IV |
% Saturation |
± 0.1 |
0.01 |
[2 , 110] |
[0 , 150] |
| Oxygen Concentration |
O2C |
P |
ppm (mg/liter) |
± 0.1 |
0.1 |
[0 , 12] |
[0 , 12] |
| pH |
Ph |
P |
pH units |
0.14 |
0.01 |
[6 , 8.5] |
[1 , 14] |
| Eh |
Eh |
P |
mV (milliVolts) |
± 1 |
0.1 |
[-1000, +1000] |
[-1000 , 1000] |
| Sea Surface Temperature (External) |
SST |
P |
° C |
± 0.003 |
0.001 |
[-1.8, 45] |
[-1.8 , 45] |
ATMOSPHERIC DATA |
| Wind Speed (apparent) |
WS |
IV |
knots |
± 0.5 |
0.1 |
[0 , 120] |
[0 , 200] |
| Magnetic Wind Direction (apparent) |
MWD |
IV |
Degrees |
± 6 |
0.1 |
[0 , 359.9] |
[0 , 359.9] |
| Air Temperature |
AT |
P |
0 C |
± 0.3 |
0.1 |
[-30 , 45] |
[-50 , 50] |
| Relative Humidity |
RH |
P |
% |
± 2 |
0.1 |
[40 , 120] |
[0 , 160] |
| Barometric Pressure |
P |
P |
hPa (hecto Pascals) |
± 1 |
0.06 |
[940 , 1040] |
[800 , 1080] |
| Compass Heading |
CH |
IV |
Degrees |
± 5 |
0.1 |
[0 , 359.9] |
[0 , 359.9] |
| Relative Wind Direction |
RWD |
IV |
Degrees |
± 5 |
0.1 |
[0 , 359.9] |
[0 , 359.9] |
| True Wind Speed (Calc) |
TWS |
P |
Knots |
± 0.6 |
0.1 |
[0 , 120] |
[0 , 200] |
| True Wind Direction (Calc) |
TWD |
P |
Degrees |
± 6 |
0.1 |
[0 , 359.9] |
[0 , 359.9] |
| Course Over Ground (Calc) |
COG |
IV |
Degrees |
± 3 |
1 |
[0 , 359.9] |
[0 , 359.9] |
| Speed Over Ground (Calc) |
SOG |
IV |
Knots |
± 0.5 |
0.1 |
[0 ,50] |
[0 , 50] |
| IV - Intermediate Varible |
| P = Parameter |
[to SK-Technology] |
