1_Input_Data

1 Input Data Collection

1.1 Soil Moisture Reference Data

European Space Agency Climate Change Initiative (ESA CCI) soil moisture version 7.1

• Combined (active and passive) soil moisture daily estimates
• Spatial Resolution = 0.25 degrees
• File Format = NC
• Projection = WGS84
• Time frame = June 26, 2002, to December 31, 2020 (6,764 daily estimates)

1.2 Prediction Covariates

1.2.1 Static Covariates

1.2.1.1 Elevation Data

Global Multi-resolution Terrain Elevation Data (GMTED2010)

• 19 tiles of mean elevation (the tiles folders contain other elevation values such as maximum elevation, minimum, median, standard deviation) covering North America
• Spatial Resolution = 7.5 arc-second
• File Format = TIF
• Projection = WGS84
• Units (elevation) = meters

1.2.1.2 Bulk Density Data

Soil Grids global Bulk Density

• 1,128 tiles for global cover
• 0-5 cm bulk density modeled values
• Spatial Resolution = 250 m
• File Format = TIF
• Projection = Homolosine
• Units = cg/cm3

1.2.2 Dynamic Covariates

1.2.2.1 Normalized Difference Vegetation Index (NDVI)

MOD13Q1 (Modis Terra NDVI)

• Repository = NASA EARTH Data Search
• Data available since 2000
• 23 16-days composites per year (starting on January 1st)
• Up to 52 Tiles covering the North American region. Not all the tiles have data for every 16-days composites, data are scarce in arctic regions during winter periods.
• 20,999 files collected from 2000 to 2020
• Tile dimensions = 1,200 x 1,200 km
• Version = 6.1
• Spatial Resolution = 250 m
• File Format = HDF (Hierarchical Data Format)
• Projection = Sinusoidal

MYD13Q1 (Modis Aqua NDVI)

• Repository = NASA EARTH Data Search
• Data available since mid-2002
• 23 16-days composites per year (starting on January 9th)
• Up to 52 Tiles covering the North American region. Not all the tiles have data for every 16-days composites, data are scarce in arctic regions during winter periods.
• 19,431 files collected from 2002 to 2020
• Tile dimensions = 1,200 x 1,200 km
• Version = 6.1
• Spatial Resolution = 250 m
• File Format = HDF (Hierarchical Data Format)
• Projection = Sinusoidal

1.2.2.2 Land Surface Temperature (LST)

MOD11A2 (Modis Terra LST)

• Repository = NASA EARTH Data Search
• Data available since 2000
• 46 8-days composites per year (starting on January 1st)
• Up to 52 Tiles covering the North American region. Not all the tiles have data for every 8-days composites, data are scarce in arctic regions during winter periods.
• 43,123 files collected from 2000 to 2020
• Tile dimensions = 1,200 x 1,200 km
• Version = 6.1
• Spatial Resolution = 1,000 m
• File Format = HDF (Hierarchical Data Format)
• Projection = Sinusoidal

MYD11A2 (Modis Aqua LST)

• Repository = NASA EARTH Data Search
• Data available since mid-2002
• 46 8-days composites per year (starting on January 1st)
• Up to 52 Tiles covering the North American region. Not all the tiles have data for every 8-days composites, data are scarce in arctic regions during winter periods.
• 38,295 files collected from 2002 to 2020
• Tile dimensions = 1,200 x 1,200 km
• Version = 6.1
• Spatial Resolution = 1,000 m
• File Format = HDF (Hierarchical Data Format)
• Projection = Sinusoidal

1.2.3 Dynamic Masks

1.2.3.1 Snow Cover Extent

MOD10A2 (Modis Terra Snow Cover)

• Repository = NASA EARTH Data Search
• Data available since 2000
• 46 8-days composites per year (starting on January 1st)
• Up to 52 Tiles covering the North American region. Not all the tiles have data for every 8-days composites, data are scarce in arctic regions during winter periods.
• 42,095 files collected from 2000 to 2020
• Tile dimensions = 10 x 10 degrees
• Version = 6.1
• Spatial Resolution = 500 m
• File Format = HDF (Hierarchical Data Format)
• Projection = Sinusoidal

MYD10A2 (Modis Aqua Snow Cover)

• Repository = NASA EARTH Data Search
• Data available since mid-2002
• 46 8-days composites per year (starting on January 1st)
• Up to 52 Tiles covering the North American region. Not all the tiles have data for every 8-days composites, data are scarce in arctic regions during winter periods.
• 37,413 files collected from 2002 to 2020
• Tile dimensions = 10 x 10 degrees
• Version = 6.1
• Spatial Resolution = 500 m
• File Format = HDF (Hierarchical Data Format)
• Projection = Sinusoidal