Data Analysis Tools
Satellite Image Products
Introducing satellite image data.
GOCI (Standard; HDF-EOS5)
With the GDPS, L2A (12 types), L2B (5 types), L2C (1 type), L2P (10 types), L3 (5 types), and L3P (4 types) can be produced through a specific algorithm, and the products of water leaving radiance, normalized water leaving radiance, chlorophyll, dissolved organic matter, and total suspended solids are distributed.
[GDPS Products]
| Data Level | Abbreviation | Products | Description | Unit |
|---|---|---|---|---|
| L2A | LW (8) | Water Leaving Radiance (Lw) | Radiance by Band | W/m^2/um/sr |
| NLW (8) | Normalized Water Leaving Radiance (nLw) | Normalized Radiance by Band | W/m^2/um/sr | |
| KD490 | Coefficient of Optical Properties of Sea Water - Diffuse Attenuation Coefficient for Downward Irradiance (Kd) | Degree to which the solar energy received into the seawater spreads as the depth of water deepens. | m^-1 | |
| CDOM | Dissolved Organic Matter | Organic Matter Dissolved in Seawater | m^-1 | |
| CHL | Chlorophyll | Chlorophyll Concentration in Phytoplankton in Seawater | mg/m^3 | |
| TSS | Total Suspended Solids | Total Suspended Minerals in Seawater | g/m^3 | |
| RI | Red Tide Index | Red Tide Occurrence | - | |
| VIS | Underwater Visibility (Visibility Distance) | Horizontal Water Clearness | m | |
| LAND_EVI | Land Vegetation Index 1 | Index Showing the Vitality of Vegetation | - | |
| LAND_NDVI | Land Vegetation Index 2 | Normalized Vegetation Index | - | |
| DUST_FMF | Aerosol 1 | A value representing the characteristics of aerosol (shape function), used to detect yellow dust in the sea | - | |
| DUST_AOT | Aerosol 2 | Aerosol Optical Thickness | - | |
| Flag | Product Flag Information | Specific Pixel Status (e.g. normal processing, atmospheric correction failure, cloud, land, sunglint, etc.) | - | |
| L2B | A (4) | Coefficient of Optical Properties of Sea Water - Extinction Coefficient | Extinction coefficient in 4 bands of 400-500 nm | m^-1 |
| A_PHYTO(4) | Chlorophyll Extinction Coefficient | 400-500nm 4개 밴드에서의 클로로필 흡광 계수 | - | |
| A_SEDI(4) | Suspended Solid Extinction Coefficient | Chlorophyll extinction coefficient in 4 bands of 400-500 nm | - | |
| A_CDOM(4) | Dissolved Organic Matter Extinction Coefficient | Dissolved organic matter extinction coefficient in 4 bands of 400-500 nm | - | |
| BB (4) | Coefficient of Optical Properties of Sea Water - Backscattering Coefficient | Backscattering coefficient in 4 bands of 400-500 nm | m^-1 | |
| L2C | Rayleigh Corrected Reflectance(8) | Reflectance with Rayleigh scattering removed | Removal of reflection by molecular scattering in the atmosphere | - |
| L2P | RRS(8) | Remote Sensing Reflectance | Remote Sensing Reflectance | sr^-1 |
| BF(8) | Bidirectional Factor | Correction of the changes of values, caused by the sunlight angle and the sensor shooting angle | - | |
| Longitude | Latitude | Latitude by Pixel | deg | |
| Latitude | Longitude | Longitude by Pixel | deg | |
| Landmask | - | Cloud (over land (3), over sea (1), land (2), sea (0), coastline (131) masking information | - | |
| PHV | Satellite Azimuth Angle | Satellite Azimuth by Pixel | deg | |
| THV | Satellite Zenith Angle | Satellite Zenith Angle by Pixel | deg | |
| SOLA | Solar Azimuth Angle | Satellite Azimuth by Pixel | deg | |
| SOLZ | Solar Zenith Angle | Solar Zenith Angle by Pixel | deg | |
| COSSZ | Solar Zenith Angle in the Direction of Cosine | Solar Zenith Angle in the Direction of Cosine by Pixel | - | |
| L3 | FGI | Fishery Information Index | Fishery information based on food quantity and sea surface temperature (MI, NOAA, etc.) | - |
| WCL | Water Quality Index | Coastal Water Quality Index | - | |
| PP | Marine Primary Productivity | Calculation of Primary Productivity for the Day | mgC /m^2 /d | |
| WCV | Current Vector | Create as a separate file (*.TXT) | - | |
| DP | Synthesis of Daily Data | Overlapping selected information from L2A data based on eight observation data | - | |
| L3P | SST | Sea Surface Temperature | Input data required for the fishery index and the primary productivity | deg |
| PAR | Photosynthetically Available Radiation | Input data required for the primary productivity | - | |
| DL | Day-Length | Day Length | - |
[L2 Header (Korean and English Alphabets)]
| Ephemeris | Scene center time | Time when collecting images of the scene center |
|---|---|---|
| Scene start time | Image collection start time of the scene | |
| Scene end time | Image collection end time of the scene | |
| File Descripter Metadata | File format document title | File Format Document Title |
| Product name | Product name | |
| processing start time | processing start time | |
| processing end time | processing end time | |
| processing time | processing time | |
| GDPS software version | GDPS software version | |
| GDPS processing mode | GDPS processing mode | |
| GDPS processing algorithm | Unique Algorithm No. by Product | |
| GDPS number of original columns | Number of Columns of Original Image | |
| GDPS number of original rows | Number of Rows of Original Image | |
| GDPS image start X coord | X-pixel coordinate based on the original image when cutting the image | |
| GDPS image start Y coord | Y-pixel coordinate based on the original image when cutting the image | |
| Map Projection | Map projection name | Map Projection Name |
| Central Longitude (meridian) | Central Longitude (meridian) | |
| Central Latitude (parallel) | Central Latitude (parallel) | |
| Equitorial radius of Earth ellipsoid | Equitorial radius of Earth ellipsoid | |
| Polar radius of Earth ellipsoid | Polar radius of Earth ellipsoid | |
| Upper Left X | X pixel coordinate of the upper left corner when the center of the image is set to 0 | |
| Upper Left Y | Y pixel coordinate of the upper left corner when the center of the image is set to 0 | |
| Lower Right X | X pixel coordinate of the lower right corner when the center of the image is set to 0 | |
| Lower Right Y | Y pixel coordinate of the lower right corner when the center of the image is set to 0 | |
| Radiometric Calibration for GOCI | Table for DN to Radiance conversion | Table for converting pixel values to radiance ones |
| Scene Header | Scene Title | Scene Title |
| Scene center latitude | Scene center latitude | |
| Scene center longitude | Scene center longitude | |
| Scene upper-left latitude | Scene upper-left latitude | |
| Scene upper-left longitude | Scene upper-left longitude | |
| Scene upper-right latitude | Scene upper-right latitude | |
| Scene upper-right longitude | Scene upper-right longitude | |
| Scene lower-left latitude | Scene lower-left latitude | |
| Scene lower-left longitude | Scene lower-left longitude | |
| Scene lower-right latitude | Scene lower-right latitude | |
| Scene lower-right longitude | Scene lower-right longitude | |
| Scene center time | Time when collecting images of the scene center | |
| Scene start time | Image collection start time of the scene | |
| Scene end time | Image collection end time of the scene | |
| number of columns | Number of Columns | |
| number of rows | Number of Row | |
| pixel spacing | pixel spacing | |
| line spacing | line spacing |
GOCI (Developmental; NETCDF4)
[Level-1B]
GOCI Level-1B Product Format Definition
GOCI-II
[Level-1B]
GOCI-II Level-1B Product Format Definition
[Level-2]
- GOCI-II Level-2 AC Product Format Definition
- GOCI-II Level-2 IOP Product Format Definition
- GOCI-II Level-2 OC Product Format Definition
- GOCI-II Level-2 AERO Product Format Definition
- GOCI-II Level-2 Land Product Format Definition
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