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Full catalog/AU_DyOcn
AU_DyOcn·v1·dataset

Sea surface temperature, wind and water vapor, daily (AMSR-E/AMSR2, 25 km)

AMSR-E/AMSR2 Unified L3 Global Daily Ascending/Descending .25x.25 deg Ocean Grids V001
atmosphere NASA NSIDC_CPRD Level 3 HDF-EOS5
In plain English

What it measures. Daily readings over the open ocean of how much water vapor and cloud water are in the air, how fast the wind is blowing at the surface, and how warm the sea surface is. Everything is laid out on an even worldwide grid of small squares.

How it's made. Built from microwave measurements made by the AMSR-E and AMSR2 instruments on the Aqua and GCOM-W1 satellites, then averaged into daily map squares (with sea surface temperature added from a separate NOAA product).

How & where you'd use it. Handy for tracking ocean weather, feeding climate and forecasting models, and watching how winds, moisture, and sea temperature change across the globe day to day.

What's measured

ATMOSPHERE › CLOUDS › CLOUD MICROPHYSICS › CLOUD PRECIPITABLE WATERATMOSPHERE › PRECIPITATION › PRECIPITATION PROFILES › CLOUD WATER PATHOCEANS › OCEAN TEMPERATURE › SEA SURFACE TEMPERATUREOCEANS › OCEAN WINDS › SURFACE WINDS

Coverage & cadence

  • Time span2002-06-01 → 2011-10-04
  • Measured byAqua (AMSR-E) · GCOM-W1 (AMSR2)
  • Processing levelLevel 3
  • Spatial extent-180, -89.24, 180, 89.24
  • FormatsHDF-EOS5
  • StatusCOMPLETE

What you can do with it

  • Map air pollutants — NO₂, aerosols, ozone
  • Track greenhouse gases and Earth's energy budget
  • Feed weather and air-quality analysis
Official description

The AMSR-E/AMSR2 Unified L3 Global Daily Ascending/Descending .25 x .25 deg Ocean Grids data set (AU_DyOcn) reports daily estimates of water vapor, cloud liquid water content, and surface wind speed over the ocean on a global 0.25° × 0.25° resolution grid. The data are derived from the AMSR-E/AMSR2 Unified L2B Global Swath Ocean Products, Version 1 data set. Sea surface temperatures from the NOAA 1/4° Daily Optimum Interpolation Sea Surface Temperature (OISST) product are also included.

Get the data

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

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