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Part 1: Document Description
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Citation |
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Title: |
Disturbance Agents in California, 1985 - 2021 |
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Identification Number: |
doi:10.7910/DVN/CVTNLY |
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Distributor: |
Harvard Dataverse |
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Date of Distribution: |
2021-12-28 |
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Version: |
2 |
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Bibliographic Citation: |
Wang, Jonathan, 2021, "Disturbance Agents in California, 1985 - 2021", https://doi.org/10.7910/DVN/CVTNLY, Harvard Dataverse, V2 |
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Citation |
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Title: |
Disturbance Agents in California, 1985 - 2021 |
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Subtitle: |
Maps of fire, harvest, forest die-off |
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Identification Number: |
doi:10.7910/DVN/CVTNLY |
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Authoring Entity: |
Wang, Jonathan (University of California, Irvine) |
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Software used in Production: |
R |
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Distributor: |
Harvard Dataverse |
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Access Authority: |
Wang, Jonathan |
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Depositor: |
Wang, Jonathan |
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Date of Deposit: |
2021-12-22 |
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Holdings Information: |
https://doi.org/10.7910/DVN/CVTNLY |
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Study Scope |
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Keywords: |
Earth and Environmental Sciences, Earth and Environmental Sciences, fire, harvest, drought, forest, California |
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Abstract: |
Raster data indicating the timing (annual), location (30 m resolution) and type of disturbance occurring in California in the years 1985 - 2021. Estimates are derived by applying a change detection algorithm to time series of Landsat data and using machine learning, calibrated against existing geospatial datasets, to classify detected breaks. Legend: 1 is fire, 2 is timber harvest, 3 is drought-induced forest die-off, 4 is unattributed greening, and 5 is unattributed browning. Greening and browning refer to events that trigger a statistical change in remote sensing time series, but is not classified as a disturbance. The fire, harvest, and die-off disturbances mapped are those of relatively high severity. Data are organized into 5000 x 5000 pixel tiles that match the tiling system used for the USGS Analysis Ready Data Landsat Collection 2 data product (C2). See: https://www.usgs.gov/landsat-missions/landsat-shapefiles-and-kml-files for more information and https://landsat.usgs.gov/ard_tile for a tool to look up ARD tiles according to overlapping lat/long coordinates. Each band in each raster is associated with a particular year from 1985 - 2021. The first band refers to the year 1985; the second to 1986, etc. |
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Time Period: |
1985-01-01-2020-12-31 |
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Kind of Data: |
raster |
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Notes: |
Legend: 1 is fire, 2 is timber harvest, 3 is drought-induced forest die-off, 4 is unattributed greening, and 5 is unattributed browning. Greening and browning refer to events that trigger a statistical change in remote sensing time series, but is not classified as a disturbance. |
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