Passive Microwave sensors#


SMAP#

Source : Alaska Satellite Facility#

Description : Provides global measurements of soil moisture and its freeze-thaw state. SMAP measures the amount of water in the top 5 cm (2 inches) of soil everywhere on the Earth’s surface every three days
Spatial coverage : Global
Temporal coverage : from april 2015 to july 2015


SMAP-NSIDC-0738#

Source : EarthData#

Description : This data set contains twice-daily, enhanced-resolution brightness temperature data derived from the SMAP radiometer.
Spatial coverage : Global
Temporal coverage : from march 2015 to april 2019


SMAP-SPL1BTB#

Source : EarthData#

Description : This Level-1B product provides calibrated estimates of time-ordered geolocated brightness temperatures measured by the Soil Moisture Active Passive passive microwave radiometer.
Spatial coverage : Global
Temporal coverage : from 2015 to present


SMAP-SPL1CTB#

Source : EarthData#

Description : This Level-1C product contains calibrated and geolocated brightness temperatures acquired by the Soil Moisture Active Passive radiometer during 6:00 a.m. descending and 6:00 p.m. ascending half-orbit passes.
Spatial coverage : Global
Temporal coverage : from 2015 to present


SMAP-SPL1CTB_E#

Source : EarthData#

Description : This enhanced Level-1C product contains calibrated and geolocated brightness temperatures acquired by the Soil Moisture Active Passive radiometer during 6:00 a.m. descending and 6:00 p.m. ascending half-orbit passes.
Spatial coverage : Global
Temporal coverage : from april 2015 to july 2015


SMAP-SPL2SMA#

Source : EarthData#

Description : This Level-2 soil moisture product provides estimates of global land surface conditions retrieved by the SMAP active radar during 6:00 a.m. descending half-orbit passes, as well as ancillary data such as surface temperature and vegetation water content.
Spatial coverage : Global
Temporal coverage : from april 2015 to july 2015


SMAP-SPL2SMAP#

Source : EarthData#

Description : This Level-2 soil moisture product provides estimates of global land surface conditions retrieved by both the Soil Moisture Active Passive radar and radiometer during 6:00 a.m. descending half-orbit passes.
Spatial coverage : Global
Temporal coverage : from april 2015 to july 2015


SMAP-SPL2SMAP_S#

Source : EarthData#

Description : This Level-2 soil moisture product provides estimates of land surface conditions retrieved by both the Soil Moisture Active Passive adiometer during 6:00 a.m. descending and 6:00 p.m. ascending half-orbit passes and the Sentinel-1A and -1B radar.
Spatial coverage : AFRICA, ASIA, EUROPE, NORTH AMERICA, SOUTH AMERICA, OCEANIA
Temporal coverage : from 2015 to present


SMAP-SPL2SMP#

Source : EarthData#

Description : This Level-2 soil moisture product provides estimates of global land surface conditions retrieved by the Soil Moisture Active Passive passive microwave radiometer during 6:00 a.m. descending and 6:00 p.m. ascending half-orbit passes.
Spatial coverage : Global
Temporal coverage : from 2015 to present


SMAP-SPL2SMP_E#

Source : EarthData#

Description : This enhanced Level-2 product contains calibrated, geolocated, brightness temperatures acquired by the Soil Moisture Active Passive radiometer during 6:00 a.m. descending and 6:00 p.m. ascending half-orbit passes.
Spatial coverage : Global
Temporal coverage : from 2015 to present


SMAP-SPL3SMA#

Source : EarthData#

Description : This Level-3 soil moisture product provides a composite of daily estimates of global land surface conditions retrieved by the Soil Moisture Active Passive radar as well as a variety of ancillary data sources.
Spatial coverage : Global
Temporal coverage : from april 2015 to july 2015


SMAP-SPL3SMAP#

Source : EarthData#

Description : This Level-3 soil moisture product provides a daily composite of global land surface conditions retrieved by both the Soil Moisture Active Passive radar and radiometer.
Spatial coverage : Global
Temporal coverage : from april 2015 to july 2015


SMAP-SPL3SMP#

Source : EarthData#

Description : This Level-3 soil moisture product provides a composite of daily estimates of global land surface conditions retrieved by the SMAP passive microwave radiometer.
Spatial coverage : Global
Temporal coverage : from 2015 to present


SMAP-SPL3SMP_E#

Source : EarthData#

Description : This enhanced Level-3 soil moisture product provides a composite of daily estimates of global land surface conditions retrieved by the Soil Moisture Active Passive radiometer.
Spatial coverage : Global
Temporal coverage : from 2015 to present


SMAP-SPL4CMDL#

Source : EarthData#

Description : The Level-4 carbon product provides global gridded daily estimates of net ecosystem carbon (CO2) exchange derived using a satellite data based terrestrial carbon flux model.
Spatial coverage : Global
Temporal coverage : from 2015 to present


SMAP-SPL4SMAU#

Source : EarthData#

Description : This SMAP Level-4 soil moisture data includes the following parameters: surface soil moisture, root zone soil moisture and additional research products (not validated).
Spatial coverage : Global
Temporal coverage : from 2015 to present


SMAP-SPL4SMGP#

Source : EarthData#

Description : This SMAP Level-4 soil moisture data includes the following parameters: surface soil moisture, root zone soil moisture and additional research products (not validated).
Spatial coverage : Global
Temporal coverage : from 2015 to present


SMAP-SPL4SMLM#

Source : EarthData#

Description : This SMAP Level-4 soil moisture data includes the following parameters: surface soil moisture, root zone soil moisture and additional research products (not validated).
Spatial coverage : Global
Temporal coverage : from 2015 to present


SMOS#

Source : EO-CAT (SMOS)#

Description : SMOS Level 1 data products are designed for scientific and operational users who need to work with calibrated MIRAS instrument measurements, while SMOS Level 2 data products are designed for scientific and operational users who need to work with geo-located soil moisture and sea surface salinity estimation as retrieved from the L1 dataset.
Spatial coverage : World
Temporal coverage : from 2010 to present


Source : EO-CAT (no_named_collections_set_1)#

Description : The SMOS Near Real Time products include Level 1 geo-located brightness temperature and Level 2 geo-located soil moisture estimation. The SMOS NRT L1 Light BUFR product contains brightness temperature geo-located on a reduced Gaussian grid (T511/N256), only for 'land' pixels but keeping the full angular resolution. The pixels are consolidated in a full orbit dump segment (i.e. around 100 minutes of sensing time) with a maximum size of about 30MB per orbit. Spatial resolution is in the range of 30-50 km. This product is distributed in BUFR format. The SMOS NRT L2 Soil Moisture Neural Network (NN) product provides NRT soil moisture data based on the statistical coefficients estimated by a neural network. It is provided in the SMOS DGG grid and only at the satellite track. It also provides an estimation of the uncertainty of the estimated soil moisture product, and the probability that a soil moisture value is contaminated by Radio Frequency Interference (RFI). This product is distributed in NetCDF format. The L2 data product is also distributed via the EUMETCast Europe Service (DVB), upon registration on the EUMETSAT Earth Observation Portal (https://eoportal.eumetsat.int/userMgmt/gateway.faces). The Ku-band DVB reception station must be situated within the service coverage in Europe. SMOS NRT data is also regularly delivered to the UK Met-Office, then made available to operational agencies and research and development institutes via the WMO GTS Network. For an optimal exploitation of the SMOS NRT products please consult the read-me-first notes available in the Resources section below.
Spatial coverage : World
Temporal coverage : from 2015 to present