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California Satellite Data

Metadata Updated: December 7, 2023


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 = "", 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:

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


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


DATA TYPE: IEEE754 float (32-bit float)


DIMS: 1203 rows x 738 columns

FILL VALUE: -999.0


PROJECTION: Lambert Azimuthal Equal Area

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources


Metadata Created Date November 12, 2020
Metadata Updated Date December 7, 2023
Data Update Frequency irregular

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date December 7, 2023
Publisher Dashlink
Identifier DASHLINK_331
Data First Published 2011-03-25
Data Last Modified 2020-01-29
Public Access Level public
Data Update Frequency irregular
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id 4b098fd7-4db5-4de9-8fc0-da2d5ab2191c
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL
Program Code 026:029
Source Datajson Identifier True
Source Hash 4a9e517a04ccfb9109c498dc570d41d5a3b1bd3b165adac08e9108416eb02fd0
Source Schema Version 1.1

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