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  • Data in Action: Sea Level satellites monitor how this year’s El Niño is shaping up

    El Niño-Southern Oscillation (ENSO) is a periodic climate pattern in the Pacific Ocean that can have consequences on fisheries in South America and bring cooler, wetter conditions to the U.S. Southwest and drought to countries in Indonesia and Australia.

    This graphic illustrates in figure 1 shows sea level anomalies (SLA) measurements from the TOPEX/Poseidon, Jason-3, and Sentinel-6 Michael Freilich mission in the beginning of October 1997, 2015, and 2023, respectively. Figure 2 shows the El Niño sea level-based index developed by Hamlington et al. (2019). It confirms that this year’s event’s effect on sea level is much more modest than in 1997 or 2015 as of October.
  • Data in Action: Unveiling small-scale ocean circulation through high-resolution Sea Surface Height

    Since the early 1990s, satellite altimeters have been used to measure sea surface height (SSH) from space.

  • Data in Action: A Closer Look at the Sub-Mesoscale Ocean Dynamics Experiment (S-MODE)

    The Sub-Mesoscale Ocean Dynamics Experiment (S-MODE) is a NASA Earth Ventures Suborbital Investigation designed to test the hypothesis that kilometer-scale (“submesoscale”) ocean eddies make important contributions to vertical exchange of climate and biological variables in the upper ocean. 

  • Webinar: From Ocean to Cloud—Enabling Workflows and Data Utilization

    Join us Wednesday, August 23, at 2 p.m., EDT [UTC -4], to learn how to set up and use cloud services to run analyses on physical oceanography data at NASA's Physical Oceanography Distributed Active Archive Center. 

  • Data in Action: Spring 2023 conditions in the Pacific Ocean favorable for the development of an El Niño in winter 2023/2024

    El Niño-Southern Oscillation (ENSO) is a climate pattern in the Pacific Ocean that has two phases: El Niño (warm/wet phase) and La Niña (cold/dry phase).

    This graphic illustrates information from the Spring 2023 conditions in the Pacific Ocean favorable for the development of an El Niño in winter 2023/2024
  • New PO.DAAC animation now available!

    CYGNSS Level 2 Ocean Surface Heat Flux Climate Data Record Version 1.2

  • New PO.DAAC animation now available!

    NOAA GHRSST Level 2P Indian Ocean Regional Skin Sea Surface Temperature v1.0

    This graphic illustrates information gathered from the NOAA GHRSST L2P Indian Ocean Regional Skin Sea Surface Temperature dataset derived from the Spinning Enhanced Visible and InfraRed Imager (SEVIRI) onboard the Meteosat-9 (MSG2) satellite.
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Science Disciplines

  • Read below about Ocean Measurements Click on this icon to read more about Ocean Measurements
    Ocean
  • Read below about Cryosphere Measurements Click on this icon to read more about Cryosphere Measurements
    Cryosphere
  • Read below about Terrestrial Hydrosphere Measurements Click on this icon to read more about Terrestrial Hydrosphere Measurements
    Terrestrial Hydrosphere
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Ocean Measurements

The Ocean includes geophysical parameters that characterize the oceans (e.g., temperature, salinity, sea surface topography, circulation, etc.) as well as those physical processes operating within the Earth’s oceans and at its surface. Select from below to learn more about the related measurements.

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    Globe icon / screenshot representing Ocean Temperature Measurement
    Ocean Temperature
    Globe icon / screenshot representing Ocean Waves Measurement
    Ocean Waves
    Globe icon / screenshot representing Ocean Winds Measurement
    Ocean Winds
    Globe icon / screenshot representing Salinity/Density Measurement
    Salinity/Density
    Globe icon / screenshot representing Ocean Surface Topography Measurement
    Ocean Surface Topography
    Globe icon / screenshot representing Ocean Circulation Measurement
    Ocean Circulation
    Globe icon / screenshot representing Ocean Heat Budget Measurement
    Ocean Heat Budget
    Globe icon / screenshot representing Gravity/Gravitational Field Measurement
    Gravity/Gravitational Field
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    Cryosphere Measurements

    The Cryosphere includes the portions of Earth's surface where water is in solid form, including sea ice, snow cover, glaciers, ice sheets, and frozen ground. Select from below to learn more about the related measurements.

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      Globe icon / screenshot representing Glaciers/Ice Sheets Measurement
      Glaciers/Ice Sheets
      Globe icon / screenshot representing Sea Ice Measurement
      Sea Ice
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      Terrestrial Hydrosphere Measurements

      Terrestrial Hydrosphere includes water on the land surface and underground in the form of lakes, rivers, groundwater, and total water storage. Select from below to learn more about the related measurements.

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      Globe icon / screenshot representing the featured (clicked) Measurement

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        Globe icon / screenshot representing Surface Water Measurement
        Surface Water

        Announcements

        Nov
        16
        NOAA GHRSST L2P/L3U N21/VIIRS sub-skin SST v2.80 datasets

        The PO.DAAC is pleased to announce the public release of the NOAA ACSPO L2P/L3U v2.80 SST datasets from Visible Infrared Imaging Radiometer Suite (VIIRS) instrument onboard the Joint Polar Satellite System 2 (JPSS-2 or J2) satellite, renamed as NOAA-21 (N21).

        Nov
        07
        Release of TOPEX/Poseidon GDR-F Reprocessed data Date: November 7, 2023

        We are pleased to announce the release of a fully reprocessed version of the TOPEX/POSEIDON Geophysical Data Record. After an exhaustive examination of all archived information from the TOPEX/POSEIDON mission by NASA and CNES teams, this product has been generated by reprocessing data from the on-board instruments and applying the current GDR-F geophysical models.

        Oct
        13
        CSR GRACE-FO Level-3 Monthly LAND/OCEAN Mass anomaly RL06.2 v04 Datasets Release

        The PO.DAAC is pleased to announce the public release of the GRACE-FO Level-3 Monthly LAND/OCEAN Mass anomaly RL06.2 v04 datasets from the Center for Space Research (CSR).

        This CSR GRACE-FO RL06.2 data is an updated version of the RL06.1 (DOI: 10.5067/GFOCN-3C614 and 10.5067/GFLND-3C614) Level-3 data products with the inputs of RL06.2 L2 data.

        Sep
        19
        CSR GRACE-FO Level-2 Monthly Geopotential Spherical Harmonics RL06.2 Dataset Release

        The PO.DAAC is pleased to announce the public release of the GRACE-FO Level-2 Monthly Geopotential Spherical Harmonics RL06.2 dataset from the Center for Space Research (CSR).

        This CSR GRACE-FO RL06.2 data is an updated version of the initial GRACE-FO RL06 (DOI: 10.5067/GFL20-MC060) and RL06.1 (DOI: 10.5067/GFL20-MC061) Level-2 data products. 

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