Full catalog/QUIKSCAT_ESDR_ANCILLARY_L2_V1.1
QUIKSCAT_ESDR_ANCILLARY_L2_V1.1·v1.1·dataset

Extra ocean surface data that supports wind retrievals (QuikSCAT)

QuikSCAT ESDR Level 2 Ancillary Ocean Surface Fields Version 1.1
ocean NASA POCLOUD Level 2 netCDF-4
In plain English

What it measures. Supporting environmental fields that travel alongside QuikSCAT ocean-wind measurements: ocean surface winds, precipitation, and surface currents, matched in space and time to the satellite's track at roughly 12.5 km spacing.

How it's made. Not direct satellite observations but model and other-mission data (ERA-5 forecast winds, GPM IMERG rainfall, GlobCurrent currents) interpolated onto the QuikSCAT scatterometer's measurement locations.

How & where you'd use it. A companion input that complements QuikSCAT's actual wind-stress measurements; most people use it together with that wind product rather than on its own.

What's measured

OCEANS › OCEAN WINDS › SURFACE WINDS › Ocean Surface Wind VectorsATMOSPHERE › ATMOSPHERIC TEMPERATURE › SURFACE TEMPERATUREATMOSPHERE › ALTITUDE › PLANETARY BOUNDARY LAYER HEIGHTOCEANS › OCEAN TEMPERATURE › SEA SURFACE TEMPERATUREOCEANS › OCEAN CIRCULATION › OCEAN CURRENTSOCEANS › OCEAN WINDS › WIND STRESSATMOSPHERE › ATMOSPHERIC TEMPERATURE › SURFACE TEMPERATURE › AIR TEMPERATUREATMOSPHERE › ATMOSPHERIC WINDS › SURFACE WINDS › WIND DIRECTIONATMOSPHERE › ATMOSPHERIC WINDS › SURFACE WINDSATMOSPHERE › ATMOSPHERIC WATER VAPOR › WATER VAPOR INDICATORS › HUMIDITY › RELATIVE HUMIDITYATMOSPHERE › PRECIPITATION › PRECIPITATION RATE

Coverage & cadence

  • Time span2000-06-01 → 2009-11-22
  • Measured byMODELS (Computer) · QUIKSCAT (SEAWINDS)
  • Processing levelLevel 2
  • Spatial extent-180, -90, 180, 90
  • FormatsnetCDF-4
  • StatusCOMPLETE

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

This dataset contains model output interpolated in space and time to the ESDR product from the scatterometer on the QuikSCAT satellite, representing the first science quality release of these data (post-provisional after v1.0) funded under the MEaAUREs program. These auxiliary fields are included to complement the scatterometer observations, specifically for the QUIKSCAT_ESDR_L2_WIND_STRESS_V1.1 dataset.. Model variables include: i) ocean surface wind fields from ERA-5 short-term forecast (removed from the analyses times to reduce impacts from assimilated scatterometer retrievals at the beginning of the forecast); ii) estimations of precipitation from the GPM IMERG product; iii) estimation of the surface currents from the GlobCurrent project. The modeled ocean surface auxiliary fields are provided on a non-uniform grid within the native L2 QuikSCAT sampled locations at a nominal 12.5 km pixel resolution. Each file corresponds to a specific orbital revolution (rev) number, which begins at the southernmost point of the ascending orbit. The thumbnail shows data for two orbits - using all orbits for a single day will provide global coverage. Version 1.1 provides a set of updates and improvements from version 1.0, including: 1) improved variable metadata, 2) removed the GlobCurrent stokes drift variables, and 3) provided data source metadata including DOIs for the ERA-5, IMERGE, and GlobCurrent data sources. The primary purpose of this release is for science evaluation by the NASA International Ocean Vector Winds Science Team (IOVWST).

Get the data

quikscat_esdr_ancillary_l2_v1.1_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="QUIKSCAT_ESDR_ANCILLARY_L2_V1.1",
    version="1.1",
    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 POCLOUD
Browsing CMR needs no login. Downloading or streaming bytes needs a free Earthdata Login + the earthaccess package.