The MCD43A2 V6 Bidirectional Reflectance Distribution Function and Albedo (BRDF/Albedo) Quality dataset is a 500 meter daily 16-day product. It contains all the quality information for the corresponding 16-day MCD43A3 Albedo and the MCD43A4 Nadir-BRDF (NBAR) products.
The MCD43A2 contains individual band quality and observation information for the MODIS land bands 1-7, along with the overall BRDF/Albedo quality information.
See dataset user guide for more information.
Documentation:
MCD43A2 V6双向反射分布函数和反照率(BRDF/Albedo)质量数据集是一个500米的每日16天产品。它包含了相应的16天MCD43A3反照率和MCD43A4 Nadir-BRDF(NBAR)产品的所有质量信息。
MCD43A2包含MODIS陆地波段1-7的单个波段质量和观测信息,以及整体BRDF/反照率质量信息。
更多信息见数据集用户指南。
文件。
用户指南
算法理论基础文件(ATBD)
一般文件
Dataset Availability
2000-02-18T00:00:00 - 2021-09-12T00:00:00
Dataset Provider
NASA LP DAAC at the USGS EROS Center
Collection Snippet
ee.ImageCollection("MODIS/006/MCD43A2")
Resolution
500 meters
Bands Table
Name | Description | Min | Max | Units | Scale |
---|---|---|---|---|---|
Snow_BRDF_Albedo | Snow-free or snow BRDF/albedo retrieved | 0 | |||
Snow_BRDF_Albedo Bitmask | Bit 0: Mandatory QA 0: Snow-free albedo retrieved1: Snow albedo retrieved | ||||
BRDF_Albedo_Platform | BRDF albedo platform information | 0 | |||
BRDF_Albedo_Platform Bitmask | Bits 0-1: Platform 0: Terra1: Terra/Aqua2: Aqua | ||||
BRDF_Albedo_LandWaterType | Land/water type | 0 | |||
BRDF_Albedo_LandWaterType Bitmask | Bits 0-2: Land/water type 0: Shallow ocean1: Land (nothing else but land)2: Ocean coastlines and lake shorelines3: Shallow inland water4: Ephemeral water5: Deep inland water6: Moderate or continental ocean7: Deep ocean | ||||
BRDF_Albedo_LocalSolarNoon | Solar zenith angle of local solar noon | 0 | 254 | Degrees | 0 |
BRDF_Albedo_ValidObs_Band1 | Valid observation for band 1 | 0 | |||
BRDF_Albedo_ValidObs_Band1 Bitmask | Bit 0: Day 1 reflectance quality 0: Observation not used1: Valid clear observationBit 1: Day 2 reflectance quality 0: Observation not used1: Valid clear observationBit 2: Day 3 reflectance quality 0: Observation not used1: Valid clear observationBit 3: Day 4 reflectance quality 0: Observation not used1: Valid clear observationBit 4: Day 5 reflectance quality 0: Observation not used1: Valid clear observationBit 5: Day 6 reflectance quality 0: Observation not used1: Valid clear observationBit 6: Day 7 reflectance quality 0: Observation not used1: Valid clear observationBit 7: Day 8 reflectance quality 0: Observation not used1: Valid clear observationBit 8: Day 9 reflectance quality 0: Observation not used1: Valid clear observationBit 9: Day 10 reflectance quality 0: Observation not used1: Valid clear observationBit 10: Day 11 reflectance quality 0: Observation not used1: Valid clear observationBit 11: Day 12 reflectance quality 0: Observation not used1: Valid clear observationBit 12: Day 13 reflectance quality 0: Observation not used1: Valid clear observationBit 13: Day 14 reflectance quality 0: Observation not used1: Valid clear observationBit 14: Day 15 reflectance quality 0: Observation not used1: Valid clear observationBit 15: Day 16 reflectance quality 0: Observation not used1: Valid clear observation | ||||
BRDF_Albedo_ValidObs_Band2 | Valid observation for band 2 (same bit meaning as in band 1) | 0 | |||
BRDF_Albedo_ValidObs_Band3 | Valid observation for band 3 (same bit meaning as in band 1) | 0 | |||
BRDF_Albedo_ValidObs_Band4 | Valid observation for band 4 (same bit meaning as in band 1) | 0 | |||
BRDF_Albedo_ValidObs_Band5 | Valid observation for band 5 (same bit meaning as in band 1) | 0 | |||
BRDF_Albedo_ValidObs_Band6 | Valid observation for band 6 (same bit meaning as in band 1) | 0 | |||
BRDF_Albedo_ValidObs_Band7 | Valid observation for band 7 (same bit meaning as in band 1) | 0 | |||
BRDF_Albedo_Band_Quality_Band1 | BRDF inversion information for band 1 | 0 | |||
BRDF_Albedo_Band_Quality_Band1 Bitmask | Bits 0-2: BRDF inversion information for band 1 0: Best quality, full inversion (WoDs and RMSE are good)1: Good quality, full inversion (also including the cases with no clear sky observations over the day of interest and those with a Solar Zenith Angle that is > 70 degrees even though WoDs and RMSE majority are good)2: Magnitude inversion (numobs ≥ 7)3: Magnitude inversion (numobs ≥ 2 & < 7)4: Fill value | ||||
BRDF_Albedo_Band_Quality_Band2 | BRDF inversion information for band 2 | 0 | |||
BRDF_Albedo_Band_Quality_Band2 Bitmask | Bits 0-2: BRDF inversion information for band 2 0: Best quality, full inversion (WoDs and RMSE are good)1: Good quality, full inversion (also including the cases with no clear sky observations over the day of interest and those with a Solar Zenith Angle that is > 70 degrees even though WoDs and RMSE majority are good)2: Magnitude inversion (numobs ≥ 7)3: Magnitude inversion (numobs ≥ 2 & < 7)4: Fill value | ||||
BRDF_Albedo_Band_Quality_Band3 | BRDF inversion information for band 3 | 0 | |||
BRDF_Albedo_Band_Quality_Band3 Bitmask | Bits 0-2: BRDF inversion information for band 3 0: Best quality, full inversion (WoDs and RMSE are good)1: Good quality, full inversion (also including the cases with no clear sky observations over the day of interest and those with a Solar Zenith Angle that is > 70 degrees even though WoDs and RMSE majority are good)2: Magnitude inversion (numobs ≥ 7)3: Magnitude inversion (numobs ≥ 2 & < 7)4: Fill value | ||||
BRDF_Albedo_Band_Quality_Band4 | BRDF inversion information for band 4 | 0 | |||
BRDF_Albedo_Band_Quality_Band4 Bitmask | Bits 0-2: BRDF inversion information for band 4 0: Best quality, full inversion (WoDs and RMSE are good)1: Good quality, full inversion (also including the cases with no clear sky observations over the day of interest and those with a Solar Zenith Angle that is > 70 degrees even though WoDs and RMSE majority are good)2: Magnitude inversion (numobs ≥ 7)3: Magnitude inversion (numobs ≥ 2 & < 7)4: Fill value | ||||
BRDF_Albedo_Band_Quality_Band5 | BRDF inversion information for band 5 | 0 | |||
BRDF_Albedo_Band_Quality_Band5 Bitmask | Bits 0-2: BRDF inversion information for band 5 0: Best quality, full inversion (WoDs and RMSE are good)1: Good quality, full inversion (also including the cases with no clear sky observations over the day of interest and those with a Solar Zenith Angle that is > 70 degrees even though WoDs and RMSE majority are good)2: Magnitude inversion (numobs ≥ 7)3: Magnitude inversion (numobs ≥ 2 & < 7)4: Fill value | ||||
BRDF_Albedo_Band_Quality_Band6 | BRDF inversion information for band 6 | 0 | |||
BRDF_Albedo_Band_Quality_Band6 Bitmask | Bits 0-2: BRDF inversion information for band 6 0: Best quality, full inversion (WoDs and RMSE are good)1: Good quality, full inversion (also including the cases with no clear sky observations over the day of interest and those with a Solar Zenith Angle that is > 70 degrees even though WoDs and RMSE majority are good)2: Magnitude inversion (numobs ≥ 7)3: Magnitude inversion (numobs ≥ 2 & < 7)4: Fill value | ||||
BRDF_Albedo_Band_Quality_Band7 | BRDF inversion information for band 7 | 0 | |||
BRDF_Albedo_Band_Quality_Band7 Bitmask | Bits 0-2: BRDF inversion information for band 7 0: Best quality, full inversion (WoDs and RMSE are good)1: Good quality, full inversion (also including the cases with no clear sky observations over the day of interest and those with a Solar Zenith Angle that is > 70 degrees even though WoDs and RMSE majority are good)2: Magnitude inversion (numobs ≥ 7)3: Magnitude inversion (numobs ≥ 2 and < 7)4: Fill value | ||||
BRDF_Albedo_Uncertainty | BRDF inversion information | 0 | 32766 | 0.001 |
BRDF_Albedo_PlatformBRDF albedo platform information0BRDF_Albedo_Platform Bitmask
BRDF_Albedo_LandWaterTypeLand/water type0BRDF_Albedo_LandWaterType Bitmask
BRDF_Albedo_LocalSolarNoonSolar zenith angle of local solar noon0254Degrees0BRDF_Albedo_ValidObs_Band1Valid observation for band 10BRDF_Albedo_ValidObs_Band1 Bitmask
BRDF_Albedo_ValidObs_Band2Valid observation for band 2 (same bit meaning as in band 1)0BRDF_Albedo_ValidObs_Band3Valid observation for band 3 (same bit meaning as in band 1)0BRDF_Albedo_ValidObs_Band4Valid observation for band 4 (same bit meaning as in band 1)0BRDF_Albedo_ValidObs_Band5Valid observation for band 5 (same bit meaning as in band 1)0BRDF_Albedo_ValidObs_Band6Valid observation for band 6 (same bit meaning as in band 1)0BRDF_Albedo_ValidObs_Band7Valid observation for band 7 (same bit meaning as in band 1)0BRDF_Albedo_Band_Quality_Band1BRDF inversion information for band 10BRDF_Albedo_Band_Quality_Band1 Bitmask
BRDF_Albedo_Band_Quality_Band2BRDF inversion information for band 20BRDF_Albedo_Band_Quality_Band2 Bitmask
BRDF_Albedo_Band_Quality_Band3BRDF inversion information for band 30BRDF_Albedo_Band_Quality_Band3 Bitmask
BRDF_Albedo_Band_Quality_Band4BRDF inversion information for band 40BRDF_Albedo_Band_Quality_Band4 Bitmask
BRDF_Albedo_Band_Quality_Band5BRDF inversion information for band 50BRDF_Albedo_Band_Quality_Band5 Bitmask
BRDF_Albedo_Band_Quality_Band6BRDF inversion information for band 60BRDF_Albedo_Band_Quality_Band6 Bitmask
BRDF_Albedo_Band_Quality_Band7BRDF inversion information for band 70BRDF_Albedo_Band_Quality_Band7 Bitmask
BRDF_Albedo_UncertaintyBRDF inversion information0327660.001
使用说明:
MODIS data and products acquired through the LP DAAC have no restrictions on subsequent use, sale, or redistribution.
通过LP DAAC获得的MODIS数据和产品对后续使用、销售或再分配没有限制。
引用:
LP DAAC - MCD12Q1LP DAAC - Land Processes Distributed Active Archive Center - Sioux Falls, SD
https://doi.org/10.5067/MODIS/MCD12Q1.006
代码:
var dataset = ee.ImageCollection('MODIS/006/MCD43A2')
.filter(ee.Filter.date('2018-01-01', '2018-05-01'));
var defaultVisualization = dataset.select('Snow_BRDF_Albedo');
var defaultVisualizationVis = {
min: 0.0,
max: 1.0,
};
Map.setCenter(6.746, 46.529, 6);
Map.addLayer(
defaultVisualization, defaultVisualizationVis, 'Default visualization');