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Full catalog/DMI_OI-DMI-L4-GLOB-v1.0
DMI_OI-DMI-L4-GLOB-v1.0·v1.0·dataset

How warm the sea surface is (DMI blended analysis)

GHRSST Level 4 DMI_OI Global Foundation Sea Surface Temperature Analysis (GDS version 2)
ocean NASA POCLOUD Level 4 netCDF-4
In plain English

What it measures. A daily, gap-free map of sea surface temperature across the whole globe at fine detail, representing the 'foundation' temperature of the ocean.

How it's made. Created by the Danish Meteorological Institute by blending nighttime temperature readings from several satellites and filling gaps with a statistical method called optimal interpolation.

How & where you'd use it. Useful for weather and ocean forecasting, tracking marine heatwaves, and climate monitoring.

What's measured

OCEANS › OCEAN TEMPERATURE › SEA SURFACE TEMPERATURE

Coverage & cadence

  • Time span2013-04-30 → ongoing
  • Measured byAqua (MODIS) · MSG (SEVIRI) · Terra (MODIS) · NOAA-20 (AVHRR-3) · Suomi-NPP (VIIRS) · GCOM-W1 (AMSR2) · METOP-A (AVHRR-3)
  • Processing levelLevel 4
  • Spatial extent-180, -90, 180, 90
  • FormatsnetCDF-4
  • StatusACTIVE

What you can do with it

  • Watch sea-surface temperature and marine heatwaves
  • Spot algal blooms and ocean-colour shifts
  • Support fisheries and coastal monitoring
Official description

A Group for High Resolution Sea Surface Temperature (GHRSST) Level 4 sea surface temperature analysis produced daily on an operational basis by the Danish Meteorological Institute (DMI) using an optimal interpolation (OI) approach on a global 0.05 degree grid. The analysis is based upon nighttime GHRSST L2P skin and subskin SST observations from several satellites. The sensors include the Advanced Very High Resolution Radiometer (AVHRR), the Spinning Enhanced Visible and Infrared Imager (SEVIRI), the Advanced Microwave Scanning Radiometer 2 (AMSR2), the Visible Infrared Imager Radiometer Suite (VIIRS), and the Moderate Resolution Imaging Spectroradiometer (MODIS) on Aqua. An ice field from the EUMETSAT OSI-SAF is used to mask out areas with ice. This dataset adheres to the version 2 GHRSST Data Processing Specification (GDS).

Get the data

dmi_oi-dmi-l4-glob-v1.0_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="DMI_OI-DMI-L4-GLOB-v1.0",
    version="1.0",
    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 POCLOUD
Browsing CMR needs no login. Downloading or streaming bytes needs a free Earthdata Login + the earthaccess package.