Data Updates

  • December 19, 2017

    GRACE reprocessing - RL06 status

    While the GRACE satellites delivered their last (as in: final!) ranging data for gravity field processing in June 2017, the science data system has not been idle. JPL, CSR and GFZ are actively work... more
    While the GRACE satellites delivered their last (as in: final!) ranging data for gravity field processing in June 2017, the science data system has not been idle. JPL, CSR and GFZ are actively working on reprocessing the entire GRACE data set (04/2002 - 06/2017) with revised data editing and parameterization, updated AOD1B background models, reprocessed Level-1B (KBR & SCA) data, updated tide models, and other improvements in force models. We expect to finish this reprocessing in Spring 2018. In addition to RL06, the processing teams continue to evaluate and improve the so-called 'ACC transplant' data months of 2017, when only a single accelerometer was available. While this patch enabled us to process gravity fields, the noise levels are currently noticeably higher than during nominal months. With some additional analysis, we are cautiously optimistic that we can improve upon this lower S/N ratio - stay tuned for updates! less
  • October 6, 2017

    JPL Global Mascon grids through 06/2017 released!

    Please visit the JPL Mascson data page for more information on the Version-2 data processing changes, and links to the JPL Mascon data grids (via JPL-PO.DAAC). NOTE: make sure to check the Releas... more
    Please visit the JPL Mascson data page for more information on the Version-2 data processing changes, and links to the JPL Mascon data grids (via JPL-PO.DAAC). NOTE: make sure to check the Release Notes for important details on data processing and uncertainties since mid-2016! less
  • January 13, 2017

    GRACE Mission status - impact on Level-3 data

    Please note there are several missing consecutive weeks due to 'active battery management' starting in 2011. These outages occur approximately every 6 months, and last 4-8 weeks. During those times... more
    Please note there are several missing consecutive weeks due to 'active battery management' starting in 2011. These outages occur approximately every 6 months, and last 4-8 weeks. During those times, science instruments vital to measure the gravity field (e.g., MWA) are switched off, and no Level-2 or Level-3 data is available. Additionally, since 10/2016, GRACE-1 continues to collect nominal science data as before, but the accelerometer on GRACE-2 is turned off. Analysis is underway to evaluate Level-2 and Level-3 data products with these constraints. Please check back for updates. less

Top Data Sets

  • JPL Global Land / Ocean Mascons (RL05M_1.v02)

    JPL's global mascons (land water storage & ocean bottom pressure) from GRACE are updated monthly, and are provided on 0.5-degree global grid.
  • GRACE Tellus LAND Grids

    Land water storage from GRACE is updated monthly, and is provided on 1-degree global grids.
  • Interactive Data Browsers

    The data browsers allow the interactive retrieval of GRACE Land data over river basins, as well as the evaluation of long-term trends and mean seasonal amplitudes. Courtesy of U. of Colorado / Boulder.

GRACE Follow-On

Launching in 2017, GRACE Follow-on (GRACE-FO) will continue GRACE's legacy of tracking Earth's water movement to monitor changes in underground water storage, the amount of water stored in large lakes and rivers, soil moisture, ice sheets and glaciers, and sea level caused by the addition of water to the ocean. These discoveries provide a unique view of Earth's climate and have far-reaching benefits to society and the world's population.

Featured Multimedia

  • Greenland Ice Loss 2002-2016

    Research based on GRACE observations indicates that between 2002 and 2016, Greenland shed approximately 280 gigatons of ice per year.

  • Antarctic Ice Loss 2002-2016

    Between 2002 and 2016, Antarctica shed approximately 125 gigatons of ice per year, causing global sea level to rise by 0.35 millimeters per year.

  • 15 Years of GRACE Earth Observations

    For 15 years, the GRACE mission has unlocked mysteries of how water moves around our planet. It gave us the first view of underground aquifers from space, and shows how fast polar ice sheets and mountain glaciers are melting.