Earth Data School
About
Full catalog/EWSG1-NAVO-L2P-v01
EWSG1-NAVO-L2P-v01·v1.0·dataset

How warm the sea surface is (EWS-G1, NAVO)

GHRSST Level 2P Sea Surface Temperature version 1.0 from the Electro-Optical Infrared Weather System Geostationary (EWSG1) produced by NAVO
ocean NASA POCLOUD Level 2P netCDF-4
In plain English

What it measures. How warm the sea surface is, measured both day and night, with daytime values skipped in spots where strong sun glare interferes.

How it's made. Calculated from the imager on the EWS-G1 geostationary satellite (formerly GOES-13, now over the Indian Ocean) using its infrared channels, delivered in half-hourly snapshots.

How & where you'd use it. Useful for monitoring sea surface temperature and weather over the Indian Ocean region, with frequent updates throughout the day.

What's measured

OCEANS › OCEAN TEMPERATURE › SEA SURFACE TEMPERATURE

Coverage & cadence

  • Time span2021-12-06 → 2023-11-08
  • Measured byGOES-13 (ABI)
  • Processing levelLevel 2P
  • Spatial extent-16, -78, 140, 78
  • 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 2P sea surface temperature produced by The Naval Oceanographic Office (NAVO) from the GOES Imager sensor on the Electro-Optical Infrared Weather System – Geostationary satellite (EWS-G1). The EWS-G1, formerly GOES-13, is the first Department of Defense owned geostationary weather satellite, which has been repositioned over Indian Ocean (IO) region at 60.0° West longitude in January 2018 and fully operational since September 8, 2020, providing timely cloud characterization and theater weather imagery to DoD. The EWS-G1 L2P SST product is calculated based on the 4-micron (band 2) and 11-micron (band 4) channels, providing nighttime and daytime SST. However, daytime SSTs are not produced in areas where the 4-micron channel is strongly affected by Solar radiation, which is defined by solar reflection angle > 50 degree. The L2P data are packaged according to the GHRSST Data Specification version 2 (GDS2) in netCDF4 format at 0.04-degree spatial resolution and stored in 48 half-hour granules per day. The data will be continually updated with 24 hours latency.

Get the data

ewsg1-navo-l2p-v01_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="EWSG1-NAVO-L2P-v01",
    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.