Extra ocean surface data that supports wind retrievals (QuikSCAT)
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
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
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. Official links
- Data Use and Citation Guidelines VIEW RELATED INFORMATION
- QuikSCAT Mission Page at PO.DAAC VIEW RELATED INFORMATION
- HTTPS endpoint for data browse and download GET DATA
- Browse granule search results in Earthdata Search GET DATA
- User Guide describing the project, objectives, processing algorithms, and data products VIEW RELATED INFORMATION
- PO.DAAC's project page for MEaSUREs OSVW VIEW RELATED INFORMATION
- This dataset can be downloaded using the podaac-data-subscriber (the recommended tool for bulk downloading PO.DAAC data). It is a Python package for downloading one or many files using the command line interface. The URL redirects to the data-subscriber home page with instructions for utilizing the tool GET DATA
- This dataset can be accessed with the Open-source Project for a Network Data Access Protocol (OPeNDAP) API framework. This service enables variable and dimensional subsetting. The URL redirects to a page with information about utilizing the service. USE SERVICE API