Evapotranspiration and Turbulent Fluxes

EvapotranspirationReference EvapotranspirationLatent and Sensible Heat Flux

 

Evapotranspiration (ET)

Evapotranspiration (ET) accounts for the flux of water evaporated at the Earth-atmosphere interface (soil + vegetation + water bodies) and transpired by vegetation through stomata in its leaves as a consequence of photosynthetic processes. Evapotranspiration plays a crucial role in the recycling of precipitation, in soil water availability and consequently on food production. Evapotranspiration is dependent mainly on the solar energy available to vaporize the water and in water content in the soil layers. Because of the dependence on solar energy, ET varies with latitude, season of year, time of day, and cloud cover.

 

Available Products:

  • MET: instantaneous ET estimates derived using observations performed by SEVIRI/MSG
  • DMET: daily integration of MET;

 

The use of LSA SAF products in publications is kindly requested to be duly acknowledged:

[product] was provided by the EUMETSAT Satellite Application Facility on Land Surface Analysis (LSA SAF; Trigo et al., 2011)
http://lsa-saf.eumetsat.int

Trigo, I. F., C. C. DaCamara, P. Viterbo, J.-L. Roujean, F. Olesen, C. Barroso, F. Camacho-de Coca, D. Carrer, S. C. Freitas, J. García-Haro, B. Geiger, F. Gellens-Meulenberghs, N. Ghilain, J. Meliá, L. Pessanha, N. Siljamo, and A. Arboleda, 2011: The Satellite Application Facility on Land Surface Analysis. Int. J. Remote Sens., 32, 2725-2744, doi: 10.1080/01431161003743199

Product specific citations:

  • MET/DMET [LSA-311; LSA-312]:

Ghilain, N., Arboleda, A. and Gellens-Meulenberghs F., 2011: Evapotranspiration modelling at large scale using near-real time MSG SEVIRI derived data. Hydrol. Earth Syst. Sci., doi:10.5194/hess-15-771-2011, 15, 771–786.

Ghilain, N., Arboleda, A., Sepulcre-Cantò, G., Batelaan, O., Ardö, J. and Gellens-Meulenberghs, F., 2012: Improving evapotranspiration in land surface models by using biophysical variables derived from MSG/SEVIRI satellite. Hydrol. Earth Syst. Sci., doi:10.5194/hess-16-2567-2012, 15, 2567-2583.

Available data formats:

  • Geostationary/sinusoidal grid in HDF5
  • Regular grid in NETCDF4

Data Server information:

 

Register here to access the LSA-SAF Data Server

When available, the CDR datasets replace the corresponding NRT data in the Data Server for the overlapping period. The CDR ensures continuos times series since it is produce with the most recent algorithm version. To obtain NRT data for the CDR period plase contact the Help Desk.

  Product Sensor/
Platform		 Spatial
coverage		 Spatial
resolution		 Temporal
Coverage		 Temporal
resolution		 Documentation Data access
LSASAF_MSG_ET_MSG-Disk.png

MSG ET
MET [LSA-311]

Operational

 SEVIRI/
MSG		 Europe, Africa,
South America		 3 km
0.05ox0.05o

2019-NRT

 30 min

Access Here

Data Server
LSASAF_MSG_DMET_MSG-Disk.png

MSG Daily
ET
DMET [LSA-312]

Operational

 SEVIRI/
MSG		 Europe, Africa,
South America		 3 km
0.05ox0.05o		 2015-NRT daily Access Here Data Server

 

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Reference Evapotranspiration (ETo)

Reference evapotranspiration (ETo) is the evapotranspiration rate from a clearly defined reference surface. The concept was introduced to allow the estimation of the evaporative demand of the atmosphere independently of crop type, crop development or management practices. ETo corresponds to the evapotranspiration from a hypothetical extensive well-watered field covered with 12 cm height green grass having an albedo of 0.23 would experience under the given down-welling short-wave radiation.

 

Available Products:

  • METREF: daily ETo derived from observations performed by SEVIRI/MSG; demonstration product available for the Indian Ocean Data Coverage (IODC)

 

The use of LSA SAF products in publications is kindly requested to be duly acknowledged:

[product] was provided by the EUMETSAT Satellite Application Facility on Land Surface Analysis (LSA SAF; Trigo et al., 2011)
http://lsa-saf.eumetsat.int

Trigo, I. F., C. C. DaCamara, P. Viterbo, J.-L. Roujean, F. Olesen, C. Barroso, F. Camacho-de Coca, D. Carrer, S. C. Freitas, J. García-Haro, B. Geiger, F. Gellens-Meulenberghs, N. Ghilain, J. Meliá, L. Pessanha, N. Siljamo, and A. Arboleda, 2011: The Satellite Application Facility on Land Surface Analysis. Int. J. Remote Sens., 32, 2725-2744, doi: 10.1080/01431161003743199

Available data formats:

  • Geostationary/sinusoidal grid in HDF5
  • Regular grid in NETCDF4

Data Server information:

 

Register here to access the LSA-SAF Data Server

When available, the CDR datasets replace the corresponding NRT data in the Data Server for the overlapping period. The CDR ensures continuos times series since it is produce with the most recent algorithm version. To obtain NRT data for the CDR period plase contact the Help Desk.

  Product Sensor/
Platform		 Spatial
coverage		 Spatial
resolution		 Temporal
Coverage		 Temporal
resolution		 Documentation Data access
LSASAF_MSG_METREF_MSG-Disk.png

MSG ET Ref
METREF [LSA-303]

Operational

 SEVIRI/
MSG		 Europe, Africa,
South America		 3 km
0.05ox0.05o

2016-NRT

 daily

Access Here

Data Server
LSASAF_MSG_METREF_MSG-Disk.png

MSG ET Ref
Data Record
METREF

Demonstration

 SEVIRI/
MSG		 Europe, Africa,
South America		 3 km
0.05ox0.05o		 2004-2015 daily Access Here
LSASAF_MSG-IODC_METREF_IODC-Disk.png

MSG-IODC
ET Ref
METREF

Demonstration

 SEVIRI/
MSG
 		 Europe, Africa,
Middle East		 3 km
0.05ox0.05o		 2017-NRT daily Access Here Data Server

 

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Latent and Sensible Heat Flux (LE/H)

Sensible (H) and Latent heat flux (LE) account for the fluxes of energy associated to the exchange of heat by convection (for H) and to the exchange of water vapour (for LE) at the Earth-atmosphere interface (soil + vegetation + water bodies). Accurate measurements of surface heat fluxes at large spatial scales are central to understand land and atmosphere interactions in the context of global warming. They are of great importance in disciplines like weather forecasting, water management, agriculture, hydrology, ecology and global climate monitoring.

 

Available Products:

  • MLE: instantaneous LE derived using observations performed by SEVIRI/MSG;
  • MH: instantaneous H derived using observations performed by SEVIRI/MSG;

 

The use of LSA SAF products in publications is kindly requested to be duly acknowledged:

[product] was provided by the EUMETSAT Satellite Application Facility on Land Surface Analysis (LSA SAF; Trigo et al., 2011)
http://lsa-saf.eumetsat.int

Trigo, I. F., C. C. DaCamara, P. Viterbo, J.-L. Roujean, F. Olesen, C. Barroso, F. Camacho-de Coca, D. Carrer, S. C. Freitas, J. García-Haro, B. Geiger, F. Gellens-Meulenberghs, N. Ghilain, J. Meliá, L. Pessanha, N. Siljamo, and A. Arboleda, 2011: The Satellite Application Facility on Land Surface Analysis. Int. J. Remote Sens., 32, 2725-2744, doi: 10.1080/01431161003743199

Product specific citations:

  • MLE/MH [LSA-305; LSA-304]:

Ghilain, N., Arboleda, A. and Gellens-Meulenberghs F., 2011: Evapotranspiration modelling at large scale using near-real time MSG SEVIRI derived data. Hydrol. Earth Syst. Sci., doi:10.5194/hess-15-771-2011, 15, 771–786.

Ghilain, N., Arboleda, A., Sepulcre-Cantò, G., Batelaan, O., Ardö, J. and Gellens-Meulenberghs, F., 2012: Improving evapotranspiration in land surface models by using biophysical variables derived from MSG/SEVIRI satellite. Hydrol. Earth Syst. Sci., doi:10.5194/hess-16-2567-2012, 15, 2567-2583.

Available data formats:

  • Geostationary/sinusoidal grid in HDF5
  • Regular grid in NETCDF4

Data Server information:

 

Register here to access the LSA-SAF Data Server

When available, the CDR datasets replace the corresponding NRT data in the Data Server for the overlapping period. The CDR ensures continuos times series since it is produce with the most recent algorithm version. To obtain NRT data for the CDR period plase contact the Help Desk.

  Product Sensor/
Platform		 Spatial
coverage		 Spatial
resolution		 Temporal
Coverage		 Temporal
resolution		 Documentation Data access
LSASAF_MSG_MLE_MSG-Disk.png

MSG LE
MLE [LSA-305]

Operational

 SEVIRI/
MSG		 Europe, Africa,
South America		 3 km
0.05ox0.05o

2019-NRT

 30 min

Access Here

Data Server
LSASAF_MSG_MH_MSG-Disk.png

MSG H
MH [LSA-304]

Operational

 SEVIRI/
MSG		 Europe, Africa,
South America		 3 km
0.05ox0.05o		 2019-NRT 30 min Data Server

 

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