Science Center Objects

LCMAP offers a suite of 10 annual data products that depict land cover and spectral change in the conterminous United States. The products are created using the Landsat Analysis Ready Data (ARD) and a Continuous Change Detection and Classification (CCDC) algorithm and are designed to inform and compliment one another.

The first LCMAP product suite will be released in early 2020, with annual releases to follow. Version 1 products cover calendar years 1985-2017 at 30-meter resolution.

Click here for detailed product descriptions

LAND COVER PRODUCTS

1. Primary Land Cover

Description: Land cover classification consisting of nine general land cover types

Note: Classes are Developed, Cropland, Tree Cover, Grass/Shrub, Wetland, Water, Ice/Snow, Barren

2. Secondary Land Cover

Description: Land cover classification consisting of nine general land cover types

Note: Alternative cover with the second-highest algorithmic probability. Same classes as primary land cover

3. Primary Land Cover Confidence

Description: A measure of confidence in the primary land cover class designation

Note: Measure from 0 to 100; higher values imply higher levels of confidence

4. Secondary Land Cover Confidence

Description: A measure of confidence in the secondary land cover class designation

Note: Measure from 0 to 100; higher values imply higher levels of confidence

5. Annual Land Cover Change

Description: Indictor of thematic land cover change that has occurred from the prior year to the current year (in other words, From:To land cover)

Note: Categories that indicate two land cover states, the prior year land cover and the current year land cover

SPECTRAL CHANGE PRODUCTS

1. Time of Spectral Change

Description: The day that a spectral change was detected for a given year

Note: Provides data indicating the location and timing of spectral breaks

2. Change Magnitude

Description: A measure of the spectral magnitude of the change found within a given year

Note: Higher values may indicate different types of change

3. Time Since Last Change

Description: The cumulative number of days since the last spectral change occurred as of July 1 of the given year 

Note: Provides an indication of how long a location has been in its current state

4. Spectral Stability Period

Description: A measure of the amount of time in days that a pixel has been spectrally stable

Note: Provides information of the frequency of land surface change

5. Model quality

Description: Characterization of time series model quality as it relates to model input data and model fit

Note: Provides a spatial measure for interpreting LCMAP product results