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In order to make all graphics for any specific parameter to achieve the same
"look" (thus allowing animations and direct visual comparisons), fixed
value ranges and color scales must be applied when geo-images are developed.
This requires a canonical set of value ranges for the important met-ocean
parameters.
| PARAMETER |
UNIT |
MINIMUM |
MAXIMUM |
SCALE |
SAGA STRETCH FACTOR |
| Temperature |
C |
-3 |
35 |
|
|
| SST (per NASA) |
C |
-2 |
45 |
|
|
| Salinity |
|
0 |
44 |
|
|
| Oxygen |
ml/l |
0 |
12 |
|
|
| Phosphate |
umole/dm3 |
0 |
4 |
Log upward |
100 |
| Nitrate |
umole/dm3 |
0 |
60 |
Log upward |
100 |
| Silicate |
umole/dm3 |
0 |
180? |
Log upward |
100 |
| pH |
|
7.0 |
9.1 |
|
|
| Chlorophyll |
ug/dm3 or mg/m3 |
0 |
64 (NASA) |
Log upward |
1000 |
| Population density |
persons/km2 |
1 |
300 |
Log upward |
100 |
| Air Pressure, Sea Level |
millibar (mb) |
960 |
1050 |
|
|
| Precipitation, by month |
mm/day |
0 |
70 |
Log upward |
100 |
| Air temperature |
C |
0 |
50 |
|
|
| Humidity, relative |
% |
0 |
100 |
|
|
| Humidity, specific |
g/kg |
0 |
30 |
|
|
| Sediment thickness |
m |
0 |
15000 |
Log upward |
100 |
| Diffuse attenuation coefficient (K490) |
m-1 |
0 |
6.4 |
Log (per NASA) |
|
| Secchi Disk Depth |
m |
0 |
75 |
|
|
| Compensation Depth for Photosynthesis (estimated from K490
at the surface, or from Secchi disk depths) |
m |
0 |
250 |
|
|
| Photosynthetically active radiation (PAR)) |
uEin/m2/day |
0 |
64 |
|
|
| Relief of the Earth Surface - Atlantic & Indian |
m |
-8700 (Puerto Rico Trench) |
8900 (Mt. Everest) |
|
|
| Relief of the Earth Surface - All Oceans |
m |
-11000 (Mindanao Trench) |
8900 (Mt. Everest) |
|
|
| Composite Runoff |
mm/month |
0 |
3000 |
Log upward |
100 |
|