SI-OLA

The Alpine Lakes Observatory Information System (SI-OLA) makes available a large amount of raw data on Lake Geneva, produced by the INRA CARRTEL laboratory in Thonon-les-Bains in collaboration with CIPEL.

Requests for this data (free of charge) can be made by registering on the SI-OLA website.

List of data available on SI-OLA

Multiparameter probe

Temperature-corrected pH
Oxygen saturation corrected by winkler
Turbidity
Polycyclic Aromatic Hydrocarbon
Brightness in the water
Phycocyanin
Percentage of oxygen at saturation
Raw pH
Light transmission
Conductivity at 25 °C
Brightness in the air
Chlorophyll a
Oxygen in mg
Temperature
Oxygen in mg corrected by winkler

Primary production

Primary production per hour
Primary production by actual incubation time
Primary production by middle third

Phytoplankton

Number of cells per ml
Number of fields counted
Biovolume of species in sample
Number of objects counted
Number of objects per ml

Zooplankton

Number of individuals

Chlorophyll

Chlorophyll c
Carotenoid
Chlorophylle a scor-unesco
Pheopigments
Chlorophylle a strickland-parsons

Physical chemistry

Gross conductivity
Chlorides
Temperature
Dissolved oxygen
Sodium
Suspended matter
Full alkalinity
Nitric nitrogen
Nitrous nitrogen
Particulate organic carbon
Calcium
pH
Ammoniacal nitrogen
Total organic carbon
Dissolved organic carbon
Particulate organic nitrogen
Total phosphorus
Phosphorus ortho
Total nitrogen
Total filtered phosphorus
Particulate phosphorus
Potassium
Sulfates
Reactive silica
Magnesium

Sampling conditions

Water appearance
Wind speed
Appreciation of time
Air temperature
Transparency with INRA disc
Water color
Wind direction
Sunshine
Atmospheric pressure on boat
Cloud cover
Water surface condition
Transparency with Secchi disk