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Full catalog/NOBM_DAY
NOBM_DAY·vR2017·dataset

Tiny ocean plants from a model fed by satellites (daily)

NASA Ocean Biogeochemical Model assimilating satellite chlorophyll data global daily VR2017 (NOBM_DAY) at GES DISC
biosphere NASA GES_DISC Level 4
In plain English

What it measures. Daily global maps of ocean biology and chemistry, including phytoplankton groups, nutrients, and ocean carbon, across the open oceans.

How it's made. Generated by the NASA Ocean Biogeochemical Model, a computer model of ocean life and chemistry that pulls in satellite chlorophyll measurements to keep its output anchored to real observations.

How & where you'd use it. Gives a consistent daily picture of ocean ecosystems and carbon for research, blending model physics with satellite data where direct measurements alone fall short.

What's measured

BIOLOGICAL CLASSIFICATION › PROTISTS › PLANKTON › PHYTOPLANKTONOCEANS › OCEAN CHEMISTRY › NITRATEOCEANS › OCEAN CHEMISTRY › NUTRIENTSOCEANS › OCEAN CHEMISTRY › PIGMENTS › CHLOROPHYLLOCEANS › OCEAN OPTICS › OCEAN COLOROCEANS › OCEAN OPTICS › PHOTOSYNTHETICALLY ACTIVE RADIATIONOCEANS › OCEAN TEMPERATURE › OCEAN MIXED LAYER

Coverage & cadence

  • Time span1998-01-01 → 2015-12-31
  • Measured byNOBM (NOT APPLICABLE)
  • Processing levelLevel 4
  • Spatial extent-180, -84, 180, 72
  • 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 is the assimilated daily data from NASA Ocean Biogeochemical Model (NOBM). The NOBM is a comprehensive, interactive ocean biogeochemical model coupled with a circulation and radiative model in the global oceans (Gregg and Casey, 2007). It spans the domain from -84 to 72 degree latitude in increments of 1.25 degree longitude by 2/3 degree latitude, including only open ocean areas where bottom depth > 200m. NOBM contains 4 phytoplankton groups, 4 nutrient groups, a single herbivore group, and 3 detrital pools, and the major ocean carbon components, dissolved organic and inorganic carbon (DOC and DIC).

Get the data

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

results = earthaccess.search_data(
    short_name="NOBM_DAY",
    version="R2017",
    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 GES_DISC
Browsing CMR needs no login. Downloading or streaming bytes needs a free Earthdata Login + the earthaccess package.