Google Earth Engine ——数据全解析专辑（COPERNICUS/S3/OLCI）20154至今哨兵-3号 数据集
Google Earth Engine ——数据全解析专辑（COPERNICUS/S3/OLCI）20154至今哨兵-3号 数据集
The Ocean and Land Color Instrument (OLCI) Earth Observation Full Resolution (EFR) dataset contains top of atmosphere radiances at 21 spectral bands with center wavelengths ranging between 0.4μm and 1.02μm at spatial resolution of 300m with worldwide coverage every ~2 days.
OLCI is one of the instruments in the ESA/EUMETSAT Sentinel-3 mission for measuring sea-surface topography, sea- and land-surface temperature, ocean color and land color with high-end accuracy and reliability to support ocean forecasting systems, as well as environmental and climate monitoring.
The Sentinel-3 OLCI instrument is based on the optomechanical and imaging design of ENVISAT's MERIS. It is designed to retrieve the spectral distribution of upwelling radiance just above the sea surface (the water-leaving radiance).
OLCI observation is performed simultaneously in 21 spectral bands ranging from the visible to the near-infrared (400 to 1029nm).
海洋和陆地颜色仪器 (OLCI) 地球观测全分辨率 (EFR) 数据集包含 21 个光谱带的顶部大气辐射，中心波长范围在 0.4μm 和 1.02μm 之间，空间分辨率为 300m，全球每约 2 天覆盖一次。
OLCI 是 ESA/EUMETSAT Sentinel-3 任务中的仪器之一，用于测量海面地形、海陆表面温度、海洋颜色和陆地颜色，具有高端的准确性和可靠性，以支持海洋预报系统，以及作为环境和气候监测。
Sentinel-3 OLCI 仪器基于 ENVISAT 的 MERIS 的光机械和成像设计。它旨在检索刚好在海面上方的上升流辐射（离开水的辐射）的光谱分布。
OLCI 观测在从可见光到近红外（400 到 1029nm）的 21 个光谱带中同时进行。
Dataset Availability
2016-10-18T19:25:42 - 2021-09-02T00:00:00
Dataset Provider
Collection Snippet
ee.ImageCollection("COPERNICUS/S3/OLCI")
Resolution
300 meters
Bands Table
Name | Description | Units | Wavelength | Scale |
|---|---|---|---|---|
Oa01_radiance | Aerosol correction, improved water constituent retrieval | W m^-2 sr^-1 μm^-1 | 400nm/15nm | 0.01394646 |
Oa02_radiance | Yellow substance and detrital pigments (turbidity) | W m^-2 sr^-1 μm^-1 | 412.5nm/10nm | 0.01338726 |
Oa03_radiance | Chl absorption max., biogeochemistry, vegetation | W m^-2 sr^-1 μm^-1 | 442.5nm/10nm | 0.01214812 |
Oa04_radiance | High Chl, other pigments | W m^-2 sr^-1 μm^-1 | 490nm/10nm | 0.01151982 |
Oa05_radiance | Chl, sediment, turbidity, red tide | W m^-2 sr^-1 μm^-1 | 510nm/10nm | 0.01009526 |
Oa06_radiance | Chlorophyll reference (Chl minimum) | W m^-2 sr^-1 μm^-1 | 560nm/10nm | 0.0123538 |
Oa07_radiance | Sediment loading | W m^-2 sr^-1 μm^-1 | 620nm/10nm | 0.00879161 |
Oa08_radiance | Chl (2^nd Chl abs. max.), sediment, yellow substance/vegetation | W m^-2 sr^-1 μm^-1 | 665nm/10nm | 0.00876539 |
Oa09_radiance | For improved fluorescence retrieval and to better account for [smile](https://sentinels.copernicus.eu/web/sentinel/technical-guides/sentinel-3-olci/level-2/smile-correction) together with the bands 665 and 680nm | W m^-2 sr^-1 μm^-1 | 673.75nm/7.5nm | 0.0095103 |
Oa10_radiance | Chl fluorescence peak, red edge | W m^-2 sr^-1 μm^-1 | 681.25nm/7.5nm | 0.00773378 |
Oa11_radiance | Chl fluorescence baseline, red edge transition | W m^-2 sr^-1 μm^-1 | 708.75nm/10nm | 0.00675523 |
Oa12_radiance | O2 absorption/clouds, vegetation | W m^-2 sr^-1 μm^-1 | 753.75nm/7.5nm | 0.0071996 |
Oa13_radiance | O2 absorption band/aerosol correction | W m^-2 sr^-1 μm^-1 | 761.25nm/7.5nm | 0.00749684 |
Oa14_radiance | Atmospheric correction | W m^-2 sr^-1 μm^-1 | 764.375nm/3.75nm | 0.0086512 |
Oa15_radiance | O2A used for cloud top pressure, fluorescence over land | W m^-2 sr^-1 μm^-1 | 767.5nm/2.5nm | 0.00526779 |
Oa16_radiance | Atmospheric correction/aerosol correction | W m^-2 sr^-1 μm^-1 | 778.75nm/15nm | 0.00530267 |
Oa17_radiance | Atmospheric correction/aerosol correction, clouds, pixel co-registration | W m^-2 sr^-1 μm^-1 | 865nm/20nm | 0.00493004 |
Oa18_radiance | Water vapour absorption reference band. Common reference band with SLSTR instrument. Vegetation monitoring | W m^-2 sr^-1 μm^-1 | 885nm/10nm | 0.00549962 |
Oa19_radiance | Water vapour absorption/vegetation monitoring (max. reflectance) | W m^-2 sr^-1 μm^-1 | 900nm/10nm | 0.00502847 |
Oa20_radiance | Water vapour absorption, atmospheric/aerosol correction | W m^-2 sr^-1 μm^-1 | 940nm/20nm | 0.00326378 |
Oa21_radiance | Atmospheric/aerosol correction | W m^-2 sr^-1 μm^-1 | 1029nm/40nm | 0.00324118 |
quality_flags | Quality flags | 0 | ||
quality_flags Bitmask | Bit 31: Land 0: Pixel is over water1: Pixel is over landBit 30: Coastline 0: Pixel is not on coastline1: Pixel is on coastlineBit 29: Fresh inland water 0: Pixel is not over fresh water, rivers, or lakes1: Pixel is over fresh water, rivers, or lakesBit 28: Tidal region 0: Pixel is not over a tidal region1: Pixel is over a tidal regionBit 27: Bright 0: Pixel is not bright1: Pixel is brightBit 26: Straylight risk 0: Stray light correction (of the Ground Imager) quality is not degraded1: Stray light correction (of the Ground Imager) quality is degraded because not enough neighbour pixels were available for its estimationBit 25: Invalid 0: Pixel is valid1: Pixel is invalid, i.e. its value is missing either because it is out of the instrument swath or because of missing or unusable Level 0 dataBit 24: Cosmetic 0: Pixel has not been filled with cosmetic values1: Pixel has been filled with cosmetic valuesBit 23: Duplicate 0: Pixel is not derived from the same instrument pixel as one of its neighbours during the re-sampling process1: Pixel is derived from the same instrument pixel as one of its neighbours during the re-sampling processBit 22: Sun-glint risk 0: The viewing and wind conditions are such that the Sun may not cause glint to occur on pixels over water surfaces1: The viewing and wind conditions are such that the Sun may cause glint to occur on pixels over water surfaces (this flag is set only on the basis of sun and viewing angles taking into account wind conditions, but it is not set according to radiometric data)Bit 21: Dubious 0: Any pixel’s sample is not contaminated by a neighbour saturated sample or the Instrument Source Packet it was extracted from is not corrupted1: Any pixel’s sample is potentially contaminated by a neighbour saturated sample or the Instrument Source Packet it was extracted from is corruptedBit 20: Saturated at Oa01 0: The sample of Oa01 is not saturated1: The sample of Oa01 is saturatedBit 19: Saturated at Oa02 0: The sample of Oa02 is not saturated1: The sample of Oa02 is saturatedBit 18: Saturated at Oa03 0: The sample of Oa03 is not saturated1: The sample of Oa03 is saturatedBit 17: Saturated at Oa04 0: The sample of Oa04 is not saturated1: The sample of Oa04 is saturatedBit 16: Saturated at Oa05 0: The sample of Oa05 is not saturated1: The sample of Oa05 is saturatedBit 15: Saturated at Oa06 0: The sample of Oa06 is not saturated1: The sample of Oa06 is saturatedBit 14: Saturated at Oa07 0: The sample of Oa07 is not saturated1: The sample of Oa07 is saturatedBit 13: Saturated at Oa08 0: The sample of Oa08 is not saturated1: The sample of Oa08 is saturatedBit 12: Saturated at Oa09 0: The sample of Oa09 is not saturated1: The sample of Oa09 is saturatedBit 11: Saturated at Oa10 0: The sample of Oa10 is not saturated1: The sample of Oa10 is saturatedBit 10: Saturated at Oa11 0: The sample of Oa11 is not saturated1: The sample of Oa11 is saturatedBit 9: Saturated at Oa12 0: The sample of Oa12 is not saturated1: The sample of Oa12 is saturatedBit 8: Saturated at Oa13 0: The sample of Oa13 is not saturated1: The sample of Oa13 is saturatedBit 7: Saturated at Oa14 0: The sample of Oa14 is not saturated1: The sample of Oa14 is saturatedBit 6: Saturated at Oa15 0: The sample of Oa15 is not saturated1: The sample of Oa15 is saturatedBit 5: Saturated at Oa16 0: The sample of Oa16 is not saturated1: The sample of Oa16 is saturatedBit 4: Saturated at Oa17 0: The sample of Oa17 is not saturated1: The sample of Oa17 is saturatedBit 3: Saturated at Oa18 0: The sample of Oa18 is not saturated1: The sample of Oa18 is saturatedBit 2: Saturated at Oa19 0: The sample of Oa19 is not saturated1: The sample of Oa19 is saturatedBit 1: Saturated at Oa20 0: The sample of Oa20 is not saturated1: The sample of Oa20 is saturatedBit 0: Saturated at Oa21 0: The sample of Oa21 is not saturated1: The sample of Oa21 is saturated | |||
- Bit 31: Land
- 0: Pixel is over water
- 1: Pixel is over land
- Bit 30: Coastline
- 0: Pixel is not on coastline
- 1: Pixel is on coastline
- Bit 29: Fresh inland water
- 0: Pixel is not over fresh water, rivers, or lakes
- 1: Pixel is over fresh water, rivers, or lakes
- Bit 28: Tidal region
- 0: Pixel is not over a tidal region
- 1: Pixel is over a tidal region
- Bit 27: Bright
- 0: Pixel is not bright
- 1: Pixel is bright
- Bit 26: Straylight risk
- 0: Stray light correction (of the Ground Imager) quality is not degraded
- 1: Stray light correction (of the Ground Imager) quality is degraded because not enough neighbour pixels were available for its estimation
- Bit 25: Invalid
- 0: Pixel is valid
- 1: Pixel is invalid, i.e. its value is missing either because it is out of the instrument swath or because of missing or unusable Level 0 data
- Bit 24: Cosmetic
- 0: Pixel has not been filled with cosmetic values
- 1: Pixel has been filled with cosmetic values
- Bit 23: Duplicate
- 0: Pixel is not derived from the same instrument pixel as one of its neighbours during the re-sampling process
- 1: Pixel is derived from the same instrument pixel as one of its neighbours during the re-sampling process
- Bit 22: Sun-glint risk
- 0: The viewing and wind conditions are such that the Sun may not cause glint to occur on pixels over water surfaces
- 1: The viewing and wind conditions are such that the Sun may cause glint to occur on pixels over water surfaces (this flag is set only on the basis of sun and viewing angles taking into account wind conditions, but it is not set according to radiometric data)
- Bit 21: Dubious
- 0: Any pixel’s sample is not contaminated by a neighbour saturated sample or the Instrument Source Packet it was extracted from is not corrupted
- 1: Any pixel’s sample is potentially contaminated by a neighbour saturated sample or the Instrument Source Packet it was extracted from is corrupted
- Bit 20: Saturated at Oa01
- 0: The sample of Oa01 is not saturated
- 1: The sample of Oa01 is saturated
- Bit 19: Saturated at Oa02
- 0: The sample of Oa02 is not saturated
- 1: The sample of Oa02 is saturated
- Bit 18: Saturated at Oa03
- 0: The sample of Oa03 is not saturated
- 1: The sample of Oa03 is saturated
- Bit 17: Saturated at Oa04
- 0: The sample of Oa04 is not saturated
- 1: The sample of Oa04 is saturated
- Bit 16: Saturated at Oa05
- 0: The sample of Oa05 is not saturated
- 1: The sample of Oa05 is saturated
- Bit 15: Saturated at Oa06
- 0: The sample of Oa06 is not saturated
- 1: The sample of Oa06 is saturated
- Bit 14: Saturated at Oa07
- 0: The sample of Oa07 is not saturated
- 1: The sample of Oa07 is saturated
- Bit 13: Saturated at Oa08
- 0: The sample of Oa08 is not saturated
- 1: The sample of Oa08 is saturated
- Bit 12: Saturated at Oa09
- 0: The sample of Oa09 is not saturated
- 1: The sample of Oa09 is saturated
- Bit 11: Saturated at Oa10
- 0: The sample of Oa10 is not saturated
- 1: The sample of Oa10 is saturated
- Bit 10: Saturated at Oa11
- 0: The sample of Oa11 is not saturated
- 1: The sample of Oa11 is saturated
- Bit 9: Saturated at Oa12
- 0: The sample of Oa12 is not saturated
- 1: The sample of Oa12 is saturated
- Bit 8: Saturated at Oa13
- 0: The sample of Oa13 is not saturated
- 1: The sample of Oa13 is saturated
- Bit 7: Saturated at Oa14
- 0: The sample of Oa14 is not saturated
- 1: The sample of Oa14 is saturated
- Bit 6: Saturated at Oa15
- 0: The sample of Oa15 is not saturated
- 1: The sample of Oa15 is saturated
- Bit 5: Saturated at Oa16
- 0: The sample of Oa16 is not saturated
- 1: The sample of Oa16 is saturated
- Bit 4: Saturated at Oa17
- 0: The sample of Oa17 is not saturated
- 1: The sample of Oa17 is saturated
- Bit 3: Saturated at Oa18
- 0: The sample of Oa18 is not saturated
- 1: The sample of Oa18 is saturated
- Bit 2: Saturated at Oa19
- 0: The sample of Oa19 is not saturated
- 1: The sample of Oa19 is saturated
- Bit 1: Saturated at Oa20
- 0: The sample of Oa20 is not saturated
- 1: The sample of Oa20 is saturated
- Bit 0: Saturated at Oa21
- 0: The sample of Oa21 is not saturated
- 1: The sample of Oa21 is saturated
影像信息：
Name | Type | Description |
|---|---|---|
SNAP_Graph_Processing_Framework_GPF_vers | String | Sentinel Application Platform (SNAP) version |
SNAP_Raster_Operators_vers | String | SNAP version |
processing_facility_country | String | Name of the country where the facility is located. This element is configurable within the IPF. |
processing_facility_name | String | Name of the facility where the processing step was performed. This element is configurable within the IPF. |
processing_facility_organisation | String | Name of the organisation responsible for the facility. This element is configurable within the IPF. |
processing_facility_site | String | Geographical location of the facility. This element is configurable within the IPF. |
processing_hardware | String | Name of the hardware in the facility used for the processing. |
processing_software_name | String | Name of the software component. |
processing_software_version | Double | The version or release identifier of the software |
processing_time | Double | The time the product was processed in 'epoch' format |
product | String | This is always `OL_1_EFR__` |
PRODUCT_ID | String | The full id of the original Sentinel-3 product |
productQuality | String | PASSED or empty |
cycle_num | Double | The cycle number is the number of times the satellite passed over the same geographical point on the ground. In the SENTINEL-3 operational phase (after launch and commissioning phases), the orbit cycle is 27 days. |
orbitNumber | Double | The absolute orbit number considers the orbits elapsed since the first ascending node crossing after launch. |
relative_orbit_num | Double | The relative orbit number is the orbit number within a cycle. Every time a cycle starts, the relative orbit number is reset to zero. |
groundTrackDirection | String | Direction of the trace made by the sub-satellite point on the surface of the Earth's reference ellipsoid due to the motion of the satellite along its orbit. |
spacecraft | String | Sentinel-3 spacecraft name: S3A, S3B |
status | String | Status of the file |
timeliness | String | Timeliness of processing being analysed |
salineWaterPixelsPercent | Double | Pixel quality information |
coastalPixelsPercent | Double | Pixel quality information |
freshInlandWaterPixelsPercent | Double | Pixel quality information |
tidalRegionPixelsPercent | Double | Pixel quality information |
brightPixelsPercent | Double | Pixel quality information |
invalidPixelsPercent | Double | Pixel quality information |
cosmeticPixelsPercent | Double | Pixel quality information |
duplicatedPixelsPercent | Double | Pixel quality information |
dubiousSamplesPercent | Double | Pixel quality information |
saturatedPixelsPercent | Double | Pixel quality information |
代码：
var dataset = ee.ImageCollection('COPERNICUS/S3/OLCI')
.filterDate('2018-04-01', '2018-04-04');
// Select bands for visualization and apply band-specific scale factors.
var rgb = dataset.select(['Oa08_radiance', 'Oa06_radiance', 'Oa04_radiance'])
.median()
// Convert to radiance units.
.multiply(ee.Image([0.00876539, 0.0123538, 0.0115198]));
var visParams = {
min: 0,
max: 6,
gamma: 1.5,
};
Map.setCenter(46.043, 1.45, 5);
Map.addLayer(rgb, visParams, 'RGB');影像：
