Col de Porte, France

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Site Overview Observations Site Map Data

Basin / Site Name	Chartreuse, Western Alps
Country; Province/State	France
Website
Operational Management

Oversight/Contacts

Name	Role	Contact Information
Isabelle Gouttevin
Yves Lejeune

Basin / Site Location (Centroid Coordinates)

Coordinate Format	Latitude	Longitude
Degrees Minutes Seconds
Decimal Degrees	45.3	5.77

Location (Physiographic Region)	Chartreuse, Western Alps
Area (km2)	point site, no catchment
Elevation (m; Mean, Maximum, Minimum)	1325
Description (Physical–Ecological–Climatic Characteristics)
Drainage / River System
Site History or Historical Context
Years of Data

Glacierized Area (% and year(s) measured)	0%
Main Land Cover(s)	open-meadow site sourrounded by alpine forest (mainly Norway Spruce)
Lithology / Soils	karstic
	J F M A M J J A S O N D A
Mean Monthly and Annual Temperature (°C)	1,1 °C (mean DJFMA over 1990-2020)
	J F M A M J J A S O N D A
Mean Total Monthly and Annual Precipitation (mm)	772 mm (cumul over DJFMA 1990-2020)
Snow Characteristics	Alpine, mid-altitude seasonal snow cover. mean DJFMA height over 1990-2020 : 59 cm. Mean number of days with snow depth higher than 30 cm : 105 days over 1990-2020
Additional Noteworthy Characteristics of Basin/Site

Meteorological Variables and Sensor Details

Variable	Station Name	Sensor(s)	Height / Depth (m)	Record Period	Measurement Frequency	Notes / Details
T		PT100
RH		Vaisala HMP45D
Kin		Kipp & Zonen CMP10 SPN1 (delta-T) (allowing quantification of direct and diffuse radiation)
Kout		Kipp & Zonen CMP10
Lin		Kipp & Zonen CGR4
Lout		Kipp & Zonen CGR4
wind speed		Thies ultrasonic anemometer – heated
precipitation		GEONOR T-200B-3 with and without windshield OTT Pluvio 2 with windshield
pressure		Vaisala PTB220

Additional Notes and Details on Meteorological Observations

The data are manually corrected to produce the complete forcing file.
Since 2016 meteorological data including radiation are also measured below the canopy in a nearby forest parcel .

Hydrological Variables and Sensor Details

Variable	Sensor(s)	Height / Depth (m)
water level	lysimeter 5m2 and lysimeter 1 m²
soil moisture	10 Delta-T soil moisture probes at 4 levels	-0.05, −0.1, −0.2, −0.3 m
soil temperature	PT100 at 5 levels	−0.05, -0.1, −0.2, −0.3, -0.5 m
surface temperature	inferred from Lout measurements and complemented with 2 IR thermometers (usefull when snow cover is patchy ; Heitronics KT15.82 IIP and Apogee SI-421)

Other Hydrological and Cryospheric Measurements and Observations

Measurement	Instrumentation Description	Spatial / Temporal Resolution and Coverage
snow surveys		weekly manual snow stratigraphies (layering, grain types and size) + temperature and water content + density profiles + Rammsonde + total SWE and bulk density
Time lapse photos	webcams	hourly
SWE instruments, pillows		weekly manual hourly measurements
snow depth		SR50 (several) and laser-rangers (see Additional Notes below)

Additional Notes and Details on Other Measurements and Observations

For snow depth, data are curated and the data from the 2 instrument types are combined to provide the best continuous snow hourly snow depth measurement. 3 additionnal weekly manual snow depth measurements

ground flux (Hukseflux HFP01)
measured radiation mask
soil properties (particle size analysis, or- ganic matter, nitrogen, and carbon total content) up to 87 cm
soil densities for the upper 30 cm

Lejeune et al., 2019 ( https://doi.org/10.5194/essd-11-71-2019 )
Morin et al., 2012 ( https://www.earth-syst-sci-data.net/4/13/2012/ )