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Full catalog/GRACEFO_L1A_ASCII_GRAV_JPL_RL04
GRACEFO_L1A_ASCII_GRAV_JPL_RL04·v4·dataset

Raw gravity-mission measurements as text (GRACE-FO, JPL)

GRACE-FO Level-1A Release version 4.0 from JPL in ASCII
deformation NASA POCLOUD Level 1A ASCII
In plain English

What it measures. The earliest, most basic data from the GRACE-FO gravity mission, raw instrument telemetry converted into engineering units, stored as plain text. It is the starting material from which more usable products are made.

How it's made. Comes straight from the GRACE-FO satellites, processed by JPL only to the first step (Level-1A) before the higher-level products are derived.

How & where you'd use it. Flagged 'for expert use only', it's a building-block input for specialists; most people use the mission's higher-level gravity and water-tracking products instead.

What's measured

SOLID EARTH › GRAVITY/GRAVITATIONAL FIELD › GRAVITY

Coverage & cadence

  • Time span2018-05-22 → ongoing
  • Measured byGRACE-FO (GRACE-FO MWI, GRACE-FO SCA, GRACE-FO ACC, GRACE-FO LRI)
  • Processing levelLevel 1A
  • Spatial extent-180, -89, 180, 89
  • FormatsASCII
  • StatusACTIVE

What you can do with it

  • Measure ground motion and subsidence (InSAR)
  • Track earthquakes, volcanoes and landslides
  • Map elevation and terrain change
Official description

FOR EXPERT USE ONLY. The GRACE-FO Level-1A data contains telemetry data that has been converted to engineering units, from which Level-1B data products are derived. For a detailed description, please see the GRACE-FO Level-1 documentation (https://podaac.jpl.nasa.gov/gravity/gracefo-documentation).

Get the data

gracefo_l1a_ascii_grav_jpl_rl04_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="GRACEFO_L1A_ASCII_GRAV_JPL_RL04",
    version="4",
    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.