Mr Maxim Lamare

Supervised by

  • Martin King First/primary/lead supervisor

    1/10/1321/10/17

Personal profile

Webpage: http://pp.ige-grenoble.fr/pageperso/lamarem/

ResearchGate profile: https://www.researchgate.net/profile/Maxim_Lamare

Twitter: @maximlamare

Research interests

My research focusses on the effects of mineral aerosol and black carbon deposits on the bi-directional reflectance distribution function (BRDF) of snow and sea ice for the inter-calibration and validation of optical Earth Observation satellite sensors.

Satellite observations are ideal for the synoptic observation of expansive and inaccessible areas, serving as both primary and secondary sources of information. However, although there is significant value in the analysis of data from individual sensors, global observing systems and in particular studies requiring different spatial resolutions and long time bases require accurate knowledge of sensor to sensor biases. Therefore the responsivities of all optical radiometers operated in space need to be intercompared and traceable to a common reference standard. Natural targets in polar regions, such as snow or sea ice, are potential vicarious calibration sites, providing uniform surfaces and short overpass times. However, snow and sea ice are not isotropic and can vary spatially, due to parameters such as mineral aerosol loadings. Therefore, the knowledge of surface BDRF is a pre-requisite for the use of satellite data. 

To investigate the effects of deposits on the BRDF of snow and sea ice, I am recording the BRDF of laboratory grown sea ice "poisoned" with varying concentrations of mineral dust and black carbon, performing field measurements, using a Gonio-RAdiometric Spectrometer System (GRASS) and modelling the data using a radiative-transfer model.

 

 

 

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