Land Variables

 

Land Near Real Time dataset

Related documents

Products description: BEC-SMOS-0001-PD.pdf

 

Available products

Global soil moisture maps

The SMOS data used to compute the Soil Moisture Binned products come from Level 2 Soil Moisture User Data Product (UDP). These UDP files are generated by ESA and include geophysical parameters, a theoretical estimate of their accuracy, flags and descriptors for the product quality.

 

1-day map. Daily frequency

The products are constructed by simple spatial averaging taking into account only the last orbit measurements in each cell. The spatial averaging is computed in a EASE 25km grid and in ISEA 4H9 grid.

 

Simple spatial averaging products in EASE 25 km grid

The products are constructed by simple spatial averaging of all orbits. The spatial averaging is computed in a EASE 25 km grid.

3-days average

9-days average

Monthly product

Annual product

Fine-scale SMOS/MODIS soil moisture maps over the Iberian Peninsula

Soil moisture maps covering the Iberian Peninsula at 1km of spatial resolution are provided since 2015 to present. Two daily maps are provided in near real time, corresponding to SMOS ascending and descending orbits.

Maps are obtained using a downscaling algorithm which combines Brightness Temperature from ESA SMOS, with LST (Land Surface Temperature) and NDVI (Normalized Difference Vegetation Index) from NASA Terra/Aqua MODIS. New version 3.0 or “all-weather” has the novelty of introducing LST from ERA-Interim to the MODIS LST/NDVI space, which allows providing soil moisture estimates independently of cloud cover. SMOS latest released data in near-time time is available at SMOS-BEC facilities, MODIS data in near real-time is kindly provided by LATUV (www.latuv.uva.es), Valladolid University.

Iberian Peninsula. High Resolution Soil Moisture

Fire risk maps over the Iberian Peninsula

Fire risk maps covering the Iberian Peninsula at 1km of spatial resolution are provided since June 2012 to present. Daily maps are provided in near real time, corresponding to SMOS ascending orbits.

Since 2012, BEC high resolution soil moisture maps in NRT are being routinely used by the Diputació de Barcelona (DiBa) for fire risk assessment and prevention during the forest fire season (JuneSeptember). SMOS-derived fine-scale soil moisture information is being included in DiBa´s fire risk prevention service daily bulletin with the purpose of detecting areas with extreme dryness posing a risk of forest fire. This daily bulletin is used by DiBa to decide where to deploy the forest fire prevention agents within the Barcelona province. With five years of data, it is now possible to detect soil moisture anomalies leading to spring and autumn fires. Recently, a relationship was found between SM, land surface temperature, and burned area. This relationship is used to to obtain BEC Fire risk maps at 1 km spatial resolution in near real-time (see product’s description). They are obtained using Soil Moisture L4 and Land Surface Temperature from MODIS and ECMWF, both absolute values and anomalies with respect to the 2011-2014 period. Four risk levels are defined, each associated with a threshold of minimum burned area: Level 0 represents a low fire risk, Level 1 corresponds to a risk of ignition (fires of up to 500 ha), Level 2 is linked to big fires (> 500 ha), and level 3 represents a risk of super big fires (>3000 ha).

Iberian Peninsula. Fire risk maps

 

Land Delayed Dataset

Related documents

Products description: BEC-SMOS-0001-PD.pdf
Quality Report: BEC-SMOS-L4SMv3-QR.pdf

 

Available products

Fine-scale SMOS/MODIS soil moisture maps over the Iberian Peninsula

Five years of fine-scale (1 km spatial resolution) soil moisture maps covering the Iberian Peninsula, starting in January 2010, is provided. It contains two maps per day, corresponding to SMOS ascending (6 A.M.) and descending (6 P.M.) passes.

Maps are obtained using a downscaling algorithm which combines Brightness Temperature from ESA SMOS, with LST (Land Surface Temperature) and NDVI (Normalized Difference Vegetation Index) from NASA Terra/Aqua MODIS. New version 3.0 or “all-weather” has the novelty of introducing LST from ERA-Interim to the MODIS LST/NDVI space, which allows providing soil moisture estimates independently of cloud cover. The latest released SMOS data is available at SMOS-BEC facilities, MODIS version 5 MOD11A1, MYD11A1 and MOD13A2 products are freely distributed by the U.S. Land Processed Distributed Active Archive Center (www.lpdaac.usgs.gov).

Iberian Peninsula. High Resolution Soil Moisture V.3 (“all-weather”)

Iberian Peninsula. High Resolution Soil Moisture V.2 (old version)