Impact of Satellite Remote Sensing Data on Simulations of Coastal Circulation and Hypoxia on the Louisiana Continental Shelf
We estimated surface salinity flux and solar penetration from satellite data, and performed model simulations to examine the impact of including the satellite estimates on temperature, salinity, and dissolved oxygen distributions on the Louisiana continental shelf (LCS) near the annual hypoxic zone....
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2016-05-01
|
| Series: | Remote Sensing |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2072-4292/8/5/435 |
| _version_ | 1818321942630891520 |
|---|---|
| author | Dong S. Ko Richard W. Gould Bradley Penta John C. Lehrter |
| author_facet | Dong S. Ko Richard W. Gould Bradley Penta John C. Lehrter |
| author_sort | Dong S. Ko |
| collection | DOAJ |
| description | We estimated surface salinity flux and solar penetration from satellite data, and performed model simulations to examine the impact of including the satellite estimates on temperature, salinity, and dissolved oxygen distributions on the Louisiana continental shelf (LCS) near the annual hypoxic zone. Rainfall data from the Tropical Rainfall Measurement Mission (TRMM) were used for the salinity flux, and the diffuse attenuation coefficient (Kd) from Moderate Resolution Imaging Spectroradiometer (MODIS) were used for solar penetration. Improvements in the model results in comparison with in situ observations occurred when the two types of satellite data were included. Without inclusion of the satellite-derived surface salinity flux, realistic monthly variability in the model salinity fields was observed, but important inter-annual variability was missed. Without inclusion of the satellite-derived light attenuation, model bottom water temperatures were too high nearshore due to excessive penetration of solar irradiance. In general, these salinity and temperature errors led to model stratification that was too weak, and the model failed to capture observed spatial and temporal variability in water-column vertical stratification. Inclusion of the satellite data improved temperature and salinity predictions and the vertical stratification was strengthened, which improved prediction of bottom-water dissolved oxygen. The model-predicted area of bottom-water hypoxia on the Louisiana shelf, an important management metric, was substantially improved in comparison to observed hypoxic area by including the satellite data. |
| first_indexed | 2024-12-13T10:48:55Z |
| format | Article |
| id | doaj.art-281b46481fc04a8eaa9f415c233b65d2 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-12-13T10:48:55Z |
| publishDate | 2016-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-281b46481fc04a8eaa9f415c233b65d22022-12-21T23:49:58ZengMDPI AGRemote Sensing2072-42922016-05-018543510.3390/rs8050435rs8050435Impact of Satellite Remote Sensing Data on Simulations of Coastal Circulation and Hypoxia on the Louisiana Continental ShelfDong S. Ko0Richard W. Gould1Bradley Penta2John C. Lehrter3Naval Research Laboratory, Oceanography Division, Stennis Space Center, MS 39529, USANaval Research Laboratory, Oceanography Division, Stennis Space Center, MS 39529, USANaval Research Laboratory, Oceanography Division, Stennis Space Center, MS 39529, USAU.S. EPA, Office of Research and Development, Gulf Breeze, FL 32561, USAWe estimated surface salinity flux and solar penetration from satellite data, and performed model simulations to examine the impact of including the satellite estimates on temperature, salinity, and dissolved oxygen distributions on the Louisiana continental shelf (LCS) near the annual hypoxic zone. Rainfall data from the Tropical Rainfall Measurement Mission (TRMM) were used for the salinity flux, and the diffuse attenuation coefficient (Kd) from Moderate Resolution Imaging Spectroradiometer (MODIS) were used for solar penetration. Improvements in the model results in comparison with in situ observations occurred when the two types of satellite data were included. Without inclusion of the satellite-derived surface salinity flux, realistic monthly variability in the model salinity fields was observed, but important inter-annual variability was missed. Without inclusion of the satellite-derived light attenuation, model bottom water temperatures were too high nearshore due to excessive penetration of solar irradiance. In general, these salinity and temperature errors led to model stratification that was too weak, and the model failed to capture observed spatial and temporal variability in water-column vertical stratification. Inclusion of the satellite data improved temperature and salinity predictions and the vertical stratification was strengthened, which improved prediction of bottom-water dissolved oxygen. The model-predicted area of bottom-water hypoxia on the Louisiana shelf, an important management metric, was substantially improved in comparison to observed hypoxic area by including the satellite data.http://www.mdpi.com/2072-4292/8/5/435TRMMMODISLouisiana shelfcoastal hypoxiaNCOM-LCS ocean model |
| spellingShingle | Dong S. Ko Richard W. Gould Bradley Penta John C. Lehrter Impact of Satellite Remote Sensing Data on Simulations of Coastal Circulation and Hypoxia on the Louisiana Continental Shelf Remote Sensing TRMM MODIS Louisiana shelf coastal hypoxia NCOM-LCS ocean model |
| title | Impact of Satellite Remote Sensing Data on Simulations of Coastal Circulation and Hypoxia on the Louisiana Continental Shelf |
| title_full | Impact of Satellite Remote Sensing Data on Simulations of Coastal Circulation and Hypoxia on the Louisiana Continental Shelf |
| title_fullStr | Impact of Satellite Remote Sensing Data on Simulations of Coastal Circulation and Hypoxia on the Louisiana Continental Shelf |
| title_full_unstemmed | Impact of Satellite Remote Sensing Data on Simulations of Coastal Circulation and Hypoxia on the Louisiana Continental Shelf |
| title_short | Impact of Satellite Remote Sensing Data on Simulations of Coastal Circulation and Hypoxia on the Louisiana Continental Shelf |
| title_sort | impact of satellite remote sensing data on simulations of coastal circulation and hypoxia on the louisiana continental shelf |
| topic | TRMM MODIS Louisiana shelf coastal hypoxia NCOM-LCS ocean model |
| url | http://www.mdpi.com/2072-4292/8/5/435 |
| work_keys_str_mv | AT dongsko impactofsatelliteremotesensingdataonsimulationsofcoastalcirculationandhypoxiaonthelouisianacontinentalshelf AT richardwgould impactofsatelliteremotesensingdataonsimulationsofcoastalcirculationandhypoxiaonthelouisianacontinentalshelf AT bradleypenta impactofsatelliteremotesensingdataonsimulationsofcoastalcirculationandhypoxiaonthelouisianacontinentalshelf AT johnclehrter impactofsatelliteremotesensingdataonsimulationsofcoastalcirculationandhypoxiaonthelouisianacontinentalshelf |