Google Earth Engine ——MCD43A1 V6双向反射分布函数和反照率（BRDF/Albedo）模型参数数据集是一个500米每日16天的产品2000年至今

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发布于 2024-02-02 10:33:00

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发布于 2024-02-02 10:33:00

The MCD43A1 V6 Bidirectional Reflectance Distribution Function and Albedo (BRDF/Albedo) Model Parameters dataset is a 500 meter daily 16-day product. The Julian date represents the 9th day of the 16-day retrieval period, and consequently the observations are weighted to estimate the BRDF/Albedo for that day. The MCD43A1 algorithm, as is with all combined products, chooses the best representative pixel from a pool that includes all the acquisitions from both the Terra and Aqua sensors from the retrieval period.

The MCD43A1 provides the three model weighting parameters (isotropic, volumetric, and geometric) for each of the MODIS bands 1 through 7 and the visible (vis), near infrared (nir), and shortwave bands used to derive the Albedo and BRDF products (MCD43A3 and MCD43A4). The Mandatory Quality layers for each of the 10 bands are supplied as well.

See dataset user guide for more information.

Documentation:

https://ladsweb.modaps.eosdis.nasa.gov/filespec/MODIS/6/MCD43A1

MCD43A1 V6双向反射分布函数和反照率（BRDF/Albedo）模型参数数据集是一个500米每日16天的产品。朱利安日期代表16天检索期的第9天，因此，观测数据被加权以估计该天的BRDF/Albedo。MCD43A1算法和所有的综合产品一样，从一个包括Terra和Aqua传感器在检索期间的所有采集数据的池子里选择最佳的代表像素。

MCD43A1为MODIS第1至第7波段以及用于推导反照率和BRDF产品（MCD43A3和MCD43A4）的可见光（vis）、近红外（nir）和短波波段提供三个模型加权参数（各向同性、容积率和几何）。同时还提供了10个波段中每个波段的强制性质量层。

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/MCD43A1")

Resolution

500 meters

Bands Table

Name	Description	Min	Max	Wavelength	Scale
BRDF_Albedo_Parameters_Band1_iso	BDRF/Albedo isotropic parameter for band 1	0	32766	620-670nm	0.001
BRDF_Albedo_Parameters_Band1_vol	BDRF/Albedo volumetric parameter for band 1	0	32766	620-670nm	0.001
BRDF_Albedo_Parameters_Band1_geo	BDRF/Albedo geometric parameter for band 1	0	32766	620-670nm	0.001
BRDF_Albedo_Parameters_Band2_iso	BDRF/Albedo isotropic parameter for band 2	0	32766	841-876nm	0.001
BRDF_Albedo_Parameters_Band2_vol	BDRF/Albedo volumetric parameter for band 2	0	32766	841-876nm	0.001
BRDF_Albedo_Parameters_Band2_geo	BDRF/Albedo geometric parameter for band 2	0	32766	841-876nm	0.001
BRDF_Albedo_Parameters_Band3_iso	BDRF/Albedo isotropic parameter for band 3	0	32766	459-479nm	0.001
BRDF_Albedo_Parameters_Band3_vol	BDRF/Albedo volumetric parameter for band 3	0	32766	459-479nm	0.001
BRDF_Albedo_Parameters_Band3_geo	BDRF/Albedo geometric parameter for band 3	0	32766	459-479nm	0.001
BRDF_Albedo_Parameters_Band4_iso	BDRF/Albedo isotropic parameter for band 4	0	32766	545-565nm	0.001
BRDF_Albedo_Parameters_Band4_vol	BDRF/Albedo volumetric parameter for band 4	0	32766	545-565nm	0.001
BRDF_Albedo_Parameters_Band4_geo	BDRF/Albedo geometric parameter for band 4	0	32766	545-565nm	0.001
BRDF_Albedo_Parameters_Band5_iso	BDRF/Albedo isotropic parameter for band 5	0	32766	1230-1250nm	0.001
BRDF_Albedo_Parameters_Band5_vol	BDRF/Albedo volumetric parameter for band 5	0	32766	1230-1250nm	0.001
BRDF_Albedo_Parameters_Band5_geo	BDRF/Albedo geometric parameter for band 5	0	32766	1230-1250nm	0.001
BRDF_Albedo_Parameters_Band6_iso	BDRF/Albedo isotropic parameter for band 6	0	32766	1628-1652nm	0.001
BRDF_Albedo_Parameters_Band6_vol	BDRF/Albedo volumetric parameter for band 6	0	32766	1628-1652nm	0.001
BRDF_Albedo_Parameters_Band6_geo	BDRF/Albedo geometric parameter for band 6	0	32766	1628-1652nm	0.001
BRDF_Albedo_Parameters_Band7_iso	BDRF/Albedo isotropic parameter for band 7	0	32766	2105-2155nm	0.001
BRDF_Albedo_Parameters_Band7_vol	BDRF/Albedo volumetric parameter for band 7	0	32766	2105-2155nm	0.001
BRDF_Albedo_Parameters_Band7_geo	BDRF/Albedo geometric parameter for band 7	0	32766	2105-2155nm	0.001
BRDF_Albedo_Parameters_vis_iso	BDRF/Albedo isotropic parameter for the visible band	0	32766		0.001
BRDF_Albedo_Parameters_vis_vol	BDRF/Albedo volumetric parameter for the visible band	0	32766		0.001
BRDF_Albedo_Parameters_vis_geo	BDRF/Albedo geometric parameter for the visible band	0	32766		0.001
BRDF_Albedo_Parameters_nir_iso	BDRF/Albedo isotropic parameter for the NIR band	0	32766	858nm	0.001
BRDF_Albedo_Parameters_nir_vol	BDRF/Albedo volumetric parameter for the NIR band	0	32766	858nm	0.001
BRDF_Albedo_Parameters_nir_geo	BDRF/Albedo geometric parameter for the NIR band	0	32766	858nm	0.001
BRDF_Albedo_Parameters_shortwave_iso	BDRF/Albedo isotropic parameter for the shortwave band	0	32766		0.001
BRDF_Albedo_Parameters_shortwave_vol	BDRF/Albedo volumetric parameter for the shortwave band	0	32766		0.001
BRDF_Albedo_Parameters_shortwave_geo	BDRF/Albedo geometric parameter for the shortwave band	0	32766		0.001
BRDF_Albedo_Band_Mandatory_Quality_Band1	BRDF albedo mandatory quality for band 1				0
BRDF_Albedo_Band_Mandatory_Quality_Band1 Bitmask	Bit 0: Mandatory QA bit index 0: Processed, good quality (full BRDF inversions)1: Processed, see other QA (magnitude BRDF inversions)
BRDF_Albedo_Band_Mandatory_Quality_Band2	BRDF albedo mandatory quality for band 2				0
BRDF_Albedo_Band_Mandatory_Quality_Band2 Bitmask	Bit 0: Mandatory QA bit index 0: Processed, good quality (full BRDF inversions)1: Processed, see other QA (magnitude BRDF inversions)
BRDF_Albedo_Band_Mandatory_Quality_Band3	BRDF albedo mandatory quality for band 3				0
BRDF_Albedo_Band_Mandatory_Quality_Band3 Bitmask	Bit 0: Mandatory QA bit index 0: Processed, good quality (full BRDF inversions)1: Processed, see other QA (magnitude BRDF inversions)
BRDF_Albedo_Band_Mandatory_Quality_Band4	BRDF albedo mandatory quality for band 4				0
BRDF_Albedo_Band_Mandatory_Quality_Band4 Bitmask	Bit 0: Mandatory QA bit index 0: Processed, good quality (full BRDF inversions)1: Processed, see other QA (magnitude BRDF inversions)
BRDF_Albedo_Band_Mandatory_Quality_Band5	BRDF albedo mandatory quality for band 5				0
BRDF_Albedo_Band_Mandatory_Quality_Band5 Bitmask	Bit 0: Mandatory QA bit index 0: Processed, good quality (full BRDF inversions)1: Processed, see other QA (magnitude BRDF inversions)
BRDF_Albedo_Band_Mandatory_Quality_Band6	BRDF albedo mandatory quality for band 6				0
BRDF_Albedo_Band_Mandatory_Quality_Band6 Bitmask	Bit 0: Mandatory QA bit index 0: Processed, good quality (full BRDF inversions)1: Processed, see other QA (magnitude BRDF inversions)
BRDF_Albedo_Band_Mandatory_Quality_Band7	BRDF albedo mandatory quality for band 7				0
BRDF_Albedo_Band_Mandatory_Quality_Band7 Bitmask	Bit 0: Mandatory QA bit index 0: Processed, good quality (full BRDF inversions)1: Processed, see other QA (magnitude BRDF inversions)
BRDF_Albedo_Band_Mandatory_Quality_vis	BRDF albedo mandatory quality for visible broadband				0
BRDF_Albedo_Band_Mandatory_Quality_vis Bitmask	Bit 0: Mandatory QA bit index 0: Processed, good quality (full BRDF inversions)1: Processed, see other QA (magnitude BRDF inversions)
BRDF_Albedo_Band_Mandatory_Quality_nir	BRDF albedo mandatory quality for NIR broadband				0
BRDF_Albedo_Band_Mandatory_Quality_nir Bitmask	Bit 0: Mandatory QA bit index 0: Processed, good quality (full BRDF inversions)1: Processed, see other QA (magnitude BRDF inversions)
BRDF_Albedo_Band_Mandatory_Quality_shortwave	BRDF albedo mandatory quality for shortwave broadband				0
BRDF_Albedo_Band_Mandatory_Quality_shortwave Bitmask	Bit 0: Mandatory QA bit index 0: Processed, good quality (full BRDF inversions)1: Processed, see other QA (magnitude BRDF inversions)

Bit 0: Mandatory QA bit index
- 0: Processed, good quality (full BRDF inversions)
- 1: Processed, see other QA (magnitude BRDF inversions)

BRDF_Albedo_Band_Mandatory_Quality_Band2BRDF albedo mandatory quality for band 20BRDF_Albedo_Band_Mandatory_Quality_Band2 Bitmask

Bit 0: Mandatory QA bit index
- 0: Processed, good quality (full BRDF inversions)
- 1: Processed, see other QA (magnitude BRDF inversions)

BRDF_Albedo_Band_Mandatory_Quality_Band3BRDF albedo mandatory quality for band 30BRDF_Albedo_Band_Mandatory_Quality_Band3 Bitmask

Bit 0: Mandatory QA bit index
- 0: Processed, good quality (full BRDF inversions)
- 1: Processed, see other QA (magnitude BRDF inversions)

BRDF_Albedo_Band_Mandatory_Quality_Band4BRDF albedo mandatory quality for band 40BRDF_Albedo_Band_Mandatory_Quality_Band4 Bitmask

Bit 0: Mandatory QA bit index
- 0: Processed, good quality (full BRDF inversions)
- 1: Processed, see other QA (magnitude BRDF inversions)

BRDF_Albedo_Band_Mandatory_Quality_Band5BRDF albedo mandatory quality for band 50BRDF_Albedo_Band_Mandatory_Quality_Band5 Bitmask

Bit 0: Mandatory QA bit index
- 0: Processed, good quality (full BRDF inversions)
- 1: Processed, see other QA (magnitude BRDF inversions)

BRDF_Albedo_Band_Mandatory_Quality_Band6BRDF albedo mandatory quality for band 60BRDF_Albedo_Band_Mandatory_Quality_Band6 Bitmask

Bit 0: Mandatory QA bit index
- 0: Processed, good quality (full BRDF inversions)
- 1: Processed, see other QA (magnitude BRDF inversions)

BRDF_Albedo_Band_Mandatory_Quality_Band7BRDF albedo mandatory quality for band 70BRDF_Albedo_Band_Mandatory_Quality_Band7 Bitmask

Bit 0: Mandatory QA bit index
- 0: Processed, good quality (full BRDF inversions)
- 1: Processed, see other QA (magnitude BRDF inversions)

BRDF_Albedo_Band_Mandatory_Quality_visBRDF albedo mandatory quality for visible broadband0BRDF_Albedo_Band_Mandatory_Quality_vis Bitmask

Bit 0: Mandatory QA bit index
- 0: Processed, good quality (full BRDF inversions)
- 1: Processed, see other QA (magnitude BRDF inversions)

BRDF_Albedo_Band_Mandatory_Quality_nirBRDF albedo mandatory quality for NIR broadband0BRDF_Albedo_Band_Mandatory_Quality_nir Bitmask

Bit 0: Mandatory QA bit index
- 0: Processed, good quality (full BRDF inversions)
- 1: Processed, see other QA (magnitude BRDF inversions)

BRDF_Albedo_Band_Mandatory_Quality_shortwaveBRDF albedo mandatory quality for shortwave broadband0BRDF_Albedo_Band_Mandatory_Quality_shortwave Bitmask

Bit 0: Mandatory QA bit index
- 0: Processed, good quality (full BRDF inversions)
- 1: Processed, see other QA (magnitude BRDF inversions)

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/MCD43A1')
                  .filter(ee.Filter.date('2018-05-01', '2018-07-01'));
var defaultVisualization = dataset.select([
  'BRDF_Albedo_Parameters_Band1_iso', 'BRDF_Albedo_Parameters_Band4_iso',
  'BRDF_Albedo_Parameters_Band3_iso'
]);
var defaultVisualizationVis = {
  min: 0.0,
  max: 1400.0,
  gamma: 2.0,
};
Map.setCenter(6.746, 46.529, 6);
Map.addLayer(
    defaultVisualization, defaultVisualizationVis, 'Default visualization');