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Full catalog/SiB4_Global_HalfDegree_Daily_1849
SiB4_Global_HalfDegree_Daily_1849·v1·dataset

Modeled daily carbon flow through ecosystems (2000-2018)

SiB4 Modeled Global 0.5-Degree Daily Carbon Fluxes and Pools, 2000-2018
biosphere NASA ORNL_CLOUD Level 4 netCDF-4 classic
In plain English

What it measures. Daily, computer-modeled estimates of how carbon, water, and energy move through ecosystems worldwide, including plant growth, soil moisture, carbon stored in living and dead plant matter, and a glow plants give off during photosynthesis. Output is broken down by plant type within each grid cell.

How it's made. Produced by the SiB4 land-surface model (a simulation, not a satellite), run globally at half-degree resolution covering the years 2000 through 2018.

How & where you'd use it. Helps scientists understand how forests, grasslands, and other ecosystems take up and release carbon, supporting carbon-cycle and climate research. Combining plant-type values into grid totals requires an area-weighted average.

What's measured

BIOSPHERE › VEGETATION › SOLAR INDUCED FLUORESCENCEBIOSPHERE › VEGETATION › LEAF CHARACTERISTICS › LEAF AREA INDEX (LAI)LAND SURFACE › SOILS › SOIL PRODUCTIVITY › GROSS PRIMARY PRODUCTION (GPP)LAND SURFACE › SOILS › SOIL MOISTURE/WATER CONTENTLAND SURFACE › SOILS › SOIL TEMPERATURECLIMATE INDICATORS › CARBON FLUXBIOSPHERE › ECOLOGICAL DYNAMICS › ECOSYSTEM FUNCTIONS › RESPIRATION RATEBIOSPHERE › VEGETATION › CARBONBIOSPHERE › ECOLOGICAL DYNAMICS › ECOSYSTEM FUNCTIONS › BIOGEOCHEMICAL CYCLES

Coverage & cadence

  • Time span2000-01-01 → 2018-12-31
  • Measured byMODELS (Computer)
  • Processing levelLevel 4
  • Spatial extent-180, -90, 180, 90
  • FormatsnetCDF-4 classic
  • StatusCOMPLETE

What you can do with it

  • Map vegetation, forests and biomass
  • Monitor ecosystem productivity and carbon
  • Support habitat and biodiversity studies
Official description

This dataset provides global daily output predicted by the Simple Biosphere Model, Version 4.2 (SiB4), at a 0.5-degree spatial resolution covering the time period 2000 through 2018. SiB4 is a mechanistic land surface model that integrates heterogeneous land cover, environmentally responsive phenology, dynamic carbon allocation, and cascading carbon pools from live biomass to surface litter to soil organic matter. Daily output includes carbon, carbonyl sulfide, and energy fluxes; solar-induced fluorescence; carbon pools; soil moisture and temperatures in the top three layers; total column soil water and plant available water; and environmental potentials used to scale photosynthesis. The SiB4 output is per plant functional type (PFT) within each 0.5-degree grid cell. SiB4 partitions variable output to 15 PFTs in each grid cell that are indexed by the "npft" dimension (01-15) in each data file. The PFT three-character abbreviations ("pft_names" variable) are listed in the same order as the "npft" dimension. To combine the PFT-specific output into grid cell totals, users must compute the area-weighted mean across the vector of PFT-specific values for each cell. Fractional areal coverages are given in the "pft_area" variable for each cell.

Get the data

sib4_global_halfdegree_daily_1849_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="SiB4_Global_HalfDegree_Daily_1849",
    version="1",
    bounding_box=(-122.5, 37.2, -121.8, 37.9),  # your area (W,S,E,N)
    temporal=("2024-01-01", "2024-12-31"),       # your dates
)
files = earthaccess.open(results)   # stream straight from ORNL_CLOUD
Browsing CMR needs no login. Downloading or streaming bytes needs a free Earthdata Login + the earthaccess package.