 |
|
||||||||||
Instrumentation
 |
|
Site 'Büel' click to enlarge |
Measurements are continuously made at two sites: 'Büel' and 'Mosnang'. 'Büel' is equipped with meteorological instruments and hydrological runoff as well as ground water instrumentation. At 'Mosnang' the runoff of the whole Rietholzbach catchment is captured. The data is recorded by several Campbell data loggers with at least an hourly time interval. Below the actual instrumentation is listed and a detailed description of the lysimeter is given.
Variable |
Type |
Sensorclick to get a picture |
Manufacturerclick for the homepage |
Remarks |
Siteclick to get an overview of the site (the number indicates the detailed position) |
| Air temperature |
Thermocouple |
Thygan VTP6 |
Meteolabor |
ventilated |
Büel (1) |
|
Thermistor |
HC2-S3 |
Rotronic |
ventilated |
Büel (1) | |
|
Ultrasonic |
CSAT3 | Campbell |
Büel (13) |
||
| Relative humidity |
Capacitive |
HC2-S3 |
Vaisala |
ventilated |
Büel (1) |
|
Dew point temperature |
Dew point mirror |
Thygan VTP6 |
Meteolabor |
|
Büel (1) |
|
Wind speed |
Propeller |
05103 |
Young |
|
Büel (2) |
|
Ultrasonic |
WMT52 |
Vaisala |
Büel (13) |
||
|
Wind direction |
Potentiometer |
05103 |
Young |
|
Büel (2) |
|
Wind vector |
Ultrasonic |
CSAT3 | Campbell |
Büel (13) |
|
|
CO2, H2O concentration |
Infrared gas analyser |
Li7500 | LiCor |
Büel (13) |
|
|
Air pressure |
Capacitive |
PTB100A |
Vaisala |
|
Büel |
|
Precipitation |
Tipping bucket |
Tognini |
Gertsch |
heated |
Büel (3) |
| Lysimeter |
Lysimeter |
ETH - see below |
|
Büel (4) | |
|
Tipping bucket |
1518-H3 |
Lambrecht |
heated |
Büel (5) | |
| Weighing gauge |
Pluvio |
OTT |
|
Büel (6) | |
|
Snow height |
Ultrasonic |
SR50 |
Campbell |
|
Büel (7) |
|
Evapotranspiration |
Weighing lysimeter |
Lysimeter | ETH - see below |
|
Büel (4) |
| Discharge |
Weighing lysimeter |
Lysimeter | ETH - see below |
|
Büel (4) |
|
Short-wave incoming radiation |
Thermopile |
CM21 |
Kipp&Zonen |
ventilated, heated |
Büel (8) |
|
Direct short-wave incoming radiation |
Thermopile |
CH1 |
Kipp&Zonen |
|
Büel (9) |
|
Diffuse short-wave incoming radiation |
Thermopile |
SS-25 |
Swissteco | ventilated, heated | Büel (9) |
|
Short-wave outgoing radiation |
Thermopile |
CM21 |
Kipp&Zonen | ventilated, heated | Büel (8) |
|
Long-wave incoming radiation |
Thermopile |
CG4 |
Kipp&Zonen | ventilated, heated | Büel (8) |
|
Thermopile |
PIR |
Eppley Laboratory |
ventilated, heated | Büel (9) | |
|
Long-wave outgoing radiation |
Thermopile |
CG4 |
Kipp&Zonen | ventilated, heated | Büel (8) |
|
Sun shine duration |
SD4 |
Meteoservis |
|
Büel (1) | |
|
PAR incoming |
Silicon photodiode |
LI-190SA |
LiCor |
|
Büel (8) |
|
PAR reflected |
Silicon photodiode |
LI-190SA | LiCor |
|
Büel (8) |
| Soil temperature |
Thermistor |
PT100 / T107 |
ETH / Campbell |
|
Büel (10) |
| Thermistor | T107 | Campbell |
Büel (12) |
||
|
Thermocouples, Pt100 |
STP01 | Hukseflux |
Büel (12) |
||
| Soil heat flux |
Thermopile |
HFP01SC |
Hukseflux |
self calibrating |
Büel (10, 12) |
| Thermopile |
HFP01 |
Hukseflux |
Büel (12) |
||
| Soil moisture |
TDR
Tektronix cabletester |
1502B |
University of Berne Tektronix |
|
Büel (4, 11) |
| TDR |
TRIME-IT/EZ |
IMKO |
Büel (12) |
||
|
WCR |
CS616 | Campbell |
Büel (12) |
||
|
capacitance, FDR |
10HS | Decagon |
Büel (12) |
||
|
SiSo |
FZ Karlsruhe |
Büel (12) |
|||
| Tensiometer | T8 | UMS |
Büel (12) |
||
| Gauge |
Ceramic pressure cell |
ODS4 |
OTT | oberer RHB | |
| Ceramic pressure cell |
PLS |
OTT |
|
Huwilerbach | |
|
Analog recorder |
R10 | OTT | Huwilerbach | ||
|
|
Mosnang | ||||
|
Water temperature |
Thermistor |
PLS |
OTT | Huwilerbach | |
|
Thermistor |
LF96 | WTW |
|
Mosnang | |
|
Groundwater table height |
Steel pressure cell |
PS1 |
OTT |
Büel |
|
| Ceramic pressure cell | Orpheus | OTT | Büel northern slope | ||
|
Ceramic pressure cell |
Aquanaut | OTT | Büel southern slope | ||
|
Groundwater temperature |
Thermistor |
PS1 |
OTT |
Büel |
|
|
Thermistor |
Orpheus | OTT | Büel northern slope | ||
|
Thermistor |
Aquanaut | OTT | Büel southern slope |
The lysimeter at 'Büel'
The lysimeter is a big 'plant pot' which is weighed. Additionally, the outflow at the bottom is measured.
From this information precipitation and evapotranspiration values can
be calculated by applying the water balance equation and information
about infiltration and storage can be obtained.
 |
| click to enlarge |
The surface of the lysimeter at 'Büel' measures 3.14 m2 and is covered with grass. The plant
composition, cutting intervals and fertilizer applications reflect the
conditions of the surrounding. The lysimeter container has a depth of 2.5 m and is filled with a typical gley-cambisol resulting in an average weight of 14'000 kg. The container is positioned on the scales (composed of three elements) which has a resolution of 100 g, which corresponds to a water column of 0.01 mm.
A scheme of the lysimeter at 'Büel' is given below:
 |
1 container 2 concrete wall 3 cellar 4 soil 5 filter (sand and gravel) 6 electronic scales 7 drainage outlet 8 moisture sensor 9 temperature sensor 10 grass |
|
|
Wichtiger Hinweis:
Diese Website wird in älteren Versionen von Netscape ohne
graphische Elemente dargestellt. Die Funktionalität der
Website ist aber trotzdem gewährleistet. Wenn Sie diese
Website regelmässig benutzen, empfehlen wir Ihnen, auf
Ihrem Computer einen aktuellen Browser zu installieren. Weitere
Informationen finden Sie auf
folgender
Seite.
Important Note:
The content in this site is accessible to any browser or
Internet device, however, some graphics will display correctly
only in the newer versions of Netscape. To get the most out of
our site we suggest you upgrade to a newer browser.
More
information
