Land Surface Temperature and Emissivity

Land Surface Temperature Land Surface Emissivity

Land Surface Temperature (LST)

Land Surface Temperature (LST) the radiative skin temperature over land. LST plays an important role in the physics of land surface as it is involved in the processes of energy and water exchange with the atmosphere. LST is useful for the scientific community, namely for those dealing with meteorological and climate models. Accurate values of LST are also of special interest in a wide range of areas related to land surface processes, including meteorology, hydrology, agrometeorology, climatology and environmental studies.

Available Products:

MLST: LST retrieval from clear-sky infrared observations performed by SEVIRI/MSG (also available as monthly composites); demonstration product available for the Indian Ocean Data Coverage (IODC)
DLST: 10-day composites of MLST, including pixel-wise maximum, minimum and median LST at each acquisition time and respective Thermal Surface Parameters
MLST-AS: All-sky LST based on a merge of the MLST product with cloudy LST derived by a Energy Balance Model
EDLST: LST retrieval from clear-sky infrared observations performed by AVHRR/Metop

Acknowledgements

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:

MLST [LSA-004]:

Ermida, S.L., Trigo, I.F., DaCamara, C.C., Pires, A.C., 2018. A Methodology to Simulate LST Directional Effects Based on Parametric Models and Landscape Properties. Remote Sens. 10, 1114. https://doi.org/10.3390/rs10071114

MLST [LSA-001, LSA-004, LSA-050]:

Trigo, I.F., Monteiro, I.T., Olesen, F., Kabsch, E., 2008. An assessment of remotely sensed land surface temperature. J. Geophys. Res. 113, 1–12. https://doi.org/10.1029/2008JD010035

DLST [LSA-003]:

Göttsche, Frank-M. , and Olesen, Folke-S. (2009), Modelling the effect of optical thickness on diurnal cycles of land surface temperature. Remote Sensing of Environment, Vol. 113(11), pp. 2306-2316. https://doi.org/10.1016/j.rse.2009.06.006

Hong, F., Zhan, W., Göttsche, F.-M., Liu, Z., Zhou, J., Huang, F., Lai, J. and Li, M. (2018), Comprehensive assessment of four-parameter diurnal land surface temperature cycle models under clear-sky. ISPRS Journal of Photogrammetry and Remote Sensing, vol. 142, pp. 190-204. https://doi.org/10.1016/j.isprsjprs.2018.06.008

MLST-AS [LSA-005]:

Martins, J.P.A., Trigo, I.F., Ghilain, N., Jimenez, C., Göttsche, F.-M., Ermida, S.L., Olesen, F.-S., Gellens-Meulenberghs, F., Arboleda, A., 2019. An all-weather land surface temperature product based on MSG/SEVIRI observations. Remote Sens. 11. https://doi.org/10.3390/rs11243044

EDLST [LSA-002]:

Trigo, I.F., Ermida, S.L., Martins, J.P.A., Gouveia, C.M., Göttsche, F.-M., Freitas, S.C., 2021. Validation and consistency assessment of land surface temperature from geostationary and polar orbit platforms: SEVIRI/MSG and AVHRR/Metop. ISPRS J. Photogramm. Remote Sens. 175, 282–297. https://doi.org/10.1016/J.ISPRSJPRS.2021.03.013

Available data formats:

Geostationary/sinusoidal grid in HDF5
Regular grid in NETCDF4

Data Server information:

When available, the Data Record (DR) datasets replace the corresponding Near Real Time (NRT) data in the Data Server for the overlapping period. The DR ensures continuous times series since it is produce with the most recent algorithm version. To obtain NRT data for the DR period plase contact the Help Desk.

Product	Sensor/ Platform	Spatial coverage	Spatial resolution	Temporal Coverage	Temporal resolution	Documentation	Data access
MSG LST¹ Directional effects MLST [LSA-004] Operational	SEVIRI/ MSG	Europe, Africa, South America	3 km 0.05^ox0.05^o	2021-NRT	15 min	Access Here	Data Server
MSG LST¹ MLST [LSA-001] Superseded (LSA-004)	SEVIRI/ MSG	Europe, Africa, South America	3 km 0.05^ox0.05^o	2005-2021	15 min	Access Here
MSG LST Data Record MLST [LSA-050] Data Record DOI	SEVIRI/ MSG	Europe, Africa, South America	3 km 0.05^ox0.05^o	2004-2015	15 min	Access Here
MSG-IODC LST MLST Demonstration	SEVIRI/ MSG	Europe, Africa, Middle East	3 km 0.05^ox0.05^o	2017-NRT	15 min	Access Here	Data Server
MSG Derived LST DLST [LSA-003] Operational	SEVIRI/ MSG	Europe, Africa, South America	3 km 0.05^ox0.05^o	2005-NRT	10-daily	Access Here	Data Server
MSG-IODC Derived LST DLST Demonstration	SEVIRI/ MSG	Europe, Africa, Middle East	3 km	2017-NRT	10-daily	Access Here	Data Server
MSG LST All-Sky v2 MLST-ASv2 [LSA-005.2] Demonstration	SEVIRI/ MSG	Europe, Africa, South America	3 km 0.05^ox0.05^o	2004-NRT	30 min	Access Here	Data Server
MSG LST All-Sky MLST-AS [LSA-005] Operational	SEVIRI/ MSG	Europe, Africa, South America	3 km 0.05^ox0.05^o	2020-NRT	30 min	Access Here	Data Server
EPS Daily LST EDLST [LSA-002] Operational	AVHRR/ Metop	Global	1 km 0.01^ox0.01^o	2015-NRT	Day/night	Access Here	Data Server

¹the LST variable is consistent across products LSA-001 and LSA-004

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Land Surface Emissivity (LSE)

Land Surface Emissivity (EM) is an intrinsic property of all materials, which measures their efficiency in converting heat into radiation. It is a critical variable in the quantification of the surface energy budget and for the estimation of surface parameters from earth observation data. The LSE varies with surface composition, roughness and water content. It also depends on observation conditions, such as the sensed wavelength, spatial resolution and viewing angle.

Available Products:

MEM: daily LSE estimates base on the Vegetation Cover Method
MEMD: direct emissivity retrieval based on a Kalman filter approach, a physical scheme that allows the simultaneous retrieval of surface emissivity and temperature

Acknowledgements

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

Product specific citations:

MEM:

Trigo, I.F., Peres, L.F., Dacamara, C.C., Freitas, S.C., 2008. Thermal land surface emissivity retrieved from SEVIRI/Meteosat. IEEE Trans. Geosci. Remote Sens. 46, 307–315.

MEMD [LSA-006]:

Masiello, G., Serio, C., De Feis, I., Amoroso, M., Venafra, S., Trigo, I.F., Watts, P., 2013. Kalman filter physical retrieval of surface emissivity and temperature from geostationary infrared radiances. Atmos. Meas. Tech. 6, 3613–3634. https://doi.org/10.5194/amt-6-3613-2013

Available data formats:

Geostationary/sinusoidal grid in HDF5
Regular grid in NETCDF4

Data Server information:

Product	Sensor/ Platform	Spatial coverage	Spatial resolution	Temporal Coverage	Temporal resolution	Documentation	Data access
MSG EM MEM Demonstration	SEVIRI/ MSG	Europe, Africa, South America	3 km 0.05^ox0.05^o	2004-NRT	daily	Access Here
MSG-IODC EM MEM Demonstration	SEVIRI/ MSG	Europe, Africa, Middle East	3 km	2017-NRT	daily	Access Here
MSG EM Direct Retrieval MEMD [LSA-006] Pre-operational	SEVIRI/ MSG	Europe, Africa, South America	3 km 0.05^ox0.05^o	2020-NRT	daily	Access Here	Data Server

Product

Sensor/
Platform

Spatial
coverage

Spatial
resolution

Temporal
Coverage

Temporal
resolution

Documentation

Data access