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Global Change Master Directory (GCMD)
Harmonized Global Land Use for Years 1500 -2100, V1
Entry ID: LAND_USE_HARMONIZATION_V1_1248_1


Summary
Abstract: These data represent fractional land use and land cover patterns annually for the years 1500 - 2100 for the globe at 0.5-degree (~50-km) spatial resolution. Land use categories of cropland, pasture, primary land, secondary (recovering) land, and urban land, and underlying annual land-use transitions, are included. Annual data on age and biomass density of secondary land, as well as annual wood harvest, are included for each grid cell. Historical land cover data for the years 1500 - 2005 are based on HYDE 3.1 and future land cover projections for the period 2006 - 2100 came from four Integrated Assessment Model (IAM) scenarios which reach different levels of radiative forcing by year 2100: MESSAGE (8.5 W/m2), AIM (6 W/m2), GCAM (4.5 W/m2), and IMAGE (2.6 W/m2). A key feature of these data is that historical reconstructions of land use were harmonized (computationally adjusted to minimize differences at the transition period) with modeled future scenarios, allowing for a seamless examination of historical and future land use. The output data present a single consistent, spatially gridded set of land-use change scenarios for studies of human impacts on the past, present, and future Earth system. For additional information about the algorithms, inputs, and options used in creating the land use transitions data, please refer to Hurtt et al. (2006) and Hurtt et al. (2011).Data are presented as a series of twenty (20) different data products representing different past and future model scenarios. There are a total of 560 NetCDF v4 files (*.nc4), one for each combination of data product and land use variable.

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Geographic Coverage
 N: 90.0 S: -90.0  E: 180.0  W: -180.0

Data Set Citation
Version: 1


Temporal Coverage
Start Date: 1500-01-01
Stop Date: 2100-01-01


Science Keywords
AGRICULTURE >FOREST SCIENCE >FOREST YIELDS    [Definition]
LAND SURFACE >LAND USE/LAND COVER >LAND RESOURCES    [Definition]
LAND SURFACE >LAND USE/LAND COVER >LAND USE CLASSES    [Definition]


ISO Topic Category
FARMING
ECONOMY
ENVIRONMENT
GEOSCIENTIFIC INFORMATION


Platform
MODELS


Project
Vegetation >Vegetation Collection    [Information]


Data Set Progress
COMPLETE


Data Center
THE OAK RIDGE NATIONAL LABORATORY (ORNL) DISTRIBUTED ACTIVE ARCHIVE CENTER (DAAC)    [Information]
Data Center URL: https://daac.ornl.gov/

Data Center Personnel
Name: NOT PROVIDED


Extended Metadata Properties
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Creation and Review Dates
Last DIF Revision Date: 2019-04-15



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