California Satellite Data

Citation:

If using this dataset please cite the following in your work:

@misc{VotDasNemSri2010 , author = "Petr Votava and Kamalika Das and Rama Nemani and Ashok N. Srivastava", year = "2010", title = "MODIS surface reflectance data repository", url = "https://c3.ndc.nasa.gov/dashlink/resources/331/", institution = "NASA Ames Research Center" }

Petr Votava, Kamalika Das, Rama Nemani, Ashok N. Srivastava. (2010). MODIS surface reflectance data repository. NASA Ames Research Center.

Data Description:

The California satellite dataset using the MODerate-resolution Imaging Spectroradiometer (MODIS) product MCD43A4 provides reflectance data adjusted using a bidirectional reflectance distribution function (BRDF) to model the values as if they were taken from nadir view.

Both Terra and Aqua data are used in the generation of this product, providing the highest probability for quality input data.

More information at: https://lpdaac.usgs.gov/lpdaac/products/modis_products_table/nadir_brdf_adjusted_reflectance/16_day_l3_global_500m/v5/combined

Data Organization:

The nine data folders correspond to three years of data.Under this top level directory structure are separate files for each band (1 - 7) and each 8-day period of the particular year. Within the period the best observations were selected for each location.

File Naming Conventions:

Each of the files represent a 2D dataset with the naming conventions as follows:

MCD43A4.CA_1KM.005.. .flt32

where is the beginning year-day of the period that where YYYY = year and DDD = day of year (001 - 366)

represents the observations in particular (spectral) band (band 1 - band 7) - since the indexing is 0-based, the range of indexes on the files is from 0 - 6 (where 0 = band 1, and 6 = band 7)

The spectral band frequencies for the MODIS acquisitions are as follows: BAND1 620 - 670 nm BAND2 841 - 876 nm BAND3 459 - 479 nm BAND4 545 - 565 nm BAND5 1230 - 1250 nm BAND6 1628 - 1652 nm BAND7 2105 - 2155 nm

File Specifications:

Each file is a single 2D dataset.

DATA TYPE: 32-bit floating point (IEEE754) with little-Endian byte ordering NUMBER OF ROWS: 1203 NUMBER OF COLUMNS: 738 FILL VALUES (observations that are either not valid or not on land, such as ocean etc.): -999.0

Overview:

DATASET: MODIS 8-day Surface Reflectance BRDF-adjusted from Terra and Aqua

COLLECTION: 5

DATA TYPE: IEEE754 float (32-bit float)

BYTE ORDER: LITTLE ENDIAN (Intel)

DIMS: 1203 rows x 738 columns

FILL VALUE: -999.0

SPATIAL RESOLUTION: 1km

PROJECTION: Lambert Azimuthal Equal Area