France - OSR

Operational Implementation Plans

In situ Data:

Over the experimental sites : Both Auradé and Lamasquère sites are ICOS sites and therefore biomass, soil humidity, meteorological, flux measurements... are standardised following the ICOS protocols. See

In total, 135 micro-meteorological variables are recorded every 30 minutes at each site. They include air temperature and humidity, air pressure, soil temperature and humidity at 0-5, 5, 10, 30, 100 cm depth, soil heat flux at 5 cm depth, global (shortwave and longwave) and PAR incident radiation, global (shortwave and longwave) and PAR reflected radiation, albedo, transmitted PAR, diffuse PAR and global shortwave radiation, NDVI, PRI, surface temperature, soil CO2 and N2O fluxes (automatic chambers), net CO2, water, sensible heat fluxes by means of the eddy-covariance method... Details concerning biomass, LAI and soil humidity measurements are presented in the Table 2 of Annex 1.

Figure 4: The Lamasquère site from around the micrometeorological station.


Figure 5: The Auradé site from around the micrometeorological station


 Over the OSR area:

Additional measurements of LAI, biomass were performed over the OSR area. See Table 2 in Annex 1 for details. Also ground truth for Land Use were collected 4 times during the year on approximately 450 plots (see Figure 6).

Figure 6: Lande use Monitoring campaigns have been carried since 2006 with approximately 450 plots monitored each year (see yellow and red fields on the map below) and up to 1500 in 2015.



Plans for Next Growing Season:

Next growing season, will you maintain your current approach, or modify the approach?  If you plan to modify, please describe your new approach.

In the frame of the Sensagri and Bag’ages project (financed by the Adour Garonne Water Council), we plan to develop SAR data assimilation in our modelling approach of biomass, yield, C & water fluxes and budgets by using the SAFYE-CO2 model. We also plan to account for the effect of cover crops or crop regrowth on thoses fluxes and budgets.

Also in the frame of the Bag’ages project 9 micro-meteorological stations will be installed (see Figure 10), covering a soil (from very dark to clear) and climatic gradient from the south-west part of France till the Eastern Pyrenees. Those stations, installed on cropland with contrasted management, will allow us to monitor air/ sol surface temperature, air humidity, precipitations, soil water content profiles from surface to 1m deep, ETR, incoming/outgoing shortwave radiation (albedo), incoming/outgoing longwave radiations. Automatic cameras will be used to monitor daily crop phenology/soil status/crop management. Those measurements will be used to validate high resolution albedo GAI and SWC products (some of them being developed within the frame of SENSAGRI).


Finally, close to 1000 plots will be monitored 5 time a year to follow land cover (mainly on croplands) and crop management within the frame of the Sensagri project. Those data will be used for validation of dynamic high resolution land use maps.  

Figure 10: Location of the 9 micro-meteorological stations that will be installed on agricultural plots in the frame of the Bag'ages project and that will complete the OSR setup (Auradé & Lamaquère sites)

©2015 Joint Experiment for Crop Assessment and Monitoring