Sea Surface Temperature (GHRSST)
The Group for High Resolution Sea Surface Temperature (GHRSST) sea surface temperature is provided in the SL_2_WST product, composed of one measurements file and no annotation files.
This file conforms to the GHRSST L2P specification and includes a single SST field derived from the best performing single-coefficient SST field in any given part of the swath, plus a number of supporting data fields which provide a context for the SST fields.
| PRODUCT NAME | GHRSST Sea Surface Temperature |
| PARAMETER ID | L2P_SST |
| PRODUCT LEVEL | 2 |
| DESCRIPTION | Single SST field produced from the best performing single-coefficient SST field plus a number of supporting data fields. |
| PRODUCT PARAMETERS | |
| COVERAGE | global |
| PACKAGING | half-orbit |
| UNITS | dimensionless |
| FORMAT | 2-byte integer |
| VAPPENDED DATA | The latitude and longitude coordinates, SST time deviation from reference time and from analysis field, Single Sensor Error Statistic (SSES) bias and standard deviation estimate, wind speed at 10 m, fractional sea-ice contamination, the aerosol contamination indicator for each pixel, quality flag and a quality indicator for SST. Included if a specific switch (user-dependent) is set to 1: The satellite zenith angle, associated TOA brightness temperature, associated TOA noise equivalent BT, SST total uncertainty. |
| FREQUENCY | 1 product per orbit |
| ADDITIONAL INFORMATION | |
| INPUT BANDS | channels S7, S8 and S9, i.e. 3.7, 10, 85 and 12 µm |
| ANCILLARY AND AUXILIARY DATA | / |
| Numeric Code | Text Code | Description |
| 0 | No_data | No data |
| 1 | Cloud | Cloud contaminated data |
| 2 | Worst_quality | Worst quality of useable data |
| 3 | Low_quality | Low quality of useable data |
| 4 | Acceptable_quality | Acceptable quality useable data |
| 5 | Best_quality | Best quality useable data |
| Bit Number | Value | Text code | Description |
| 0 | 0 | infrared | Sensor type |
| 1 | microwave | ||
| 1 | 0 | ocean | Surface type |
| 1 | land | ||
| 2 | 1 | ice | Ice contamination |
| 3 | 1 | lake | Inut data over lake surface |
| 4 | 1 | river | Inut data over river |
| 5 | - | - | (spare) |
| 6:8 | 0 | no_retrieval | SST algorithm |
| 1 | N2-retrieval | ||
| 2 | N3R-retrieval | ||
| 3 | N3-retrieval | ||
| 4 | D2-retrieval | ||
| 5 | D3-retrieval | ||
| 9 | 1 | cosmetic-fill | L1b pixel (in one or both views for D2, D3) was cosmetically filled |
| 10 | 1 | day | Pixel in daylight |
| 11 | 1 | sun_glint | Sun glint likely in pixel |
| 12 | 1 | cloud | Cloud detected in pixel |
| 13 | 1 | pointing | Level 1b pointing exception |
| 14 | 1 | exception | Level 1b data is missing or invalid |
| 15 | 1 | overflow | L2P SST is out of range |