see also https://www.watercolumncorrection.com/waimanalo-errors.php
|
Evidence of pollution
Under-estimation of depth in modeling results
Operational wavelengths: NoNeed for field data for WV2 images
Final results
Observed error
Reducing the error: work on the western area
Command Line
Evidence of pollution
see report by Hawaii State Department of Health 2001
| |
|
|
No sign of "pollution" in the NIR1 band ![]() Location of profile_green Profile_green_C and profile_green_B run over optically deep waters in the RED and NIR bands NIR shows no sign of significant "pollution" RED shows consistently several DNs higher than deep water radiance Add tide height=100 cm to all DTM readings Read further comments | No sign of "pollution" in the NIR1 band ![]() Profile_green for bands 4, 5 and 6 section C is north section A is south |
Pollution is for real
Well maybe not real "pollution" as we know it.
Still there is something that causes the increase of deep water radiances in the Red and Yellow bands,
but does not significantly affect the water optical properties of these Oceanic Type 1 blue waters.
Waters that pour out of the -small- Waimanalo Stream are observed to be of the Coastal 1 water type:
clear waters with a buildup of dissolved organic matter.
There is a large army base, and also a marine park in the surrounding.
There is also aquafarming at Oceanic Institute at Makapuu point: they pump up deep cold waters?
My guess is that, for some reason,
a plume of suspended particles hovers over the 'polluted' area.