| 1981 | 2nd of March - observations begin of; |
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- Surface pressure (Precision metal aneroid (station pressure) ordinary barograph
and microbarograph (Lambrecht KG, Gottengen) position 40m above MSL)
- Temperature (standard psychrometer, maximum and minimum thermometers
(Lambrecht, Gottingen), several Pt-100
resistance thermometers - in 2m high Stevenson Screen 40m North of base)
- Wind speed (Thiess, Gottingen, 18m high March 1981, 17m high February 1982)
- Wind direction (Thiess, Gottingen, 18m high March 1981, 17m high February 1982)
- Global radiation (Pyranometer - PSP No. 20313F3 (Eppley Laboratories) 9m high Jan 1981, 11m high Jan 1982)
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| 1982 | 15m mast installed to measure vertical profiles of; |
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- Air temperatures (Pt-100 (Lambrecht, Gottingen 6 heights between 0.5 and 15m))
- Snow temperatures (Pt-100 (Lambrecht, Gottingen 6 heights between 0.25 and 6m))
- Wind speed (Thiess, Gottingen, 6 heights between 0.5 and 15m)
- Wind direction (Thiess, Gottingen, 5 heights between 1 and 15m)
More sensors were installed for;
- Radiation sensors;
Global radiation (Pyranometer (Eppley Laboratories)),
Reflected solar radiation (Pyranometer (Eppley laboratories)),
Total radiation (up and down) (Pyrradiometer (Lange, Berlin))
- 2 Humidity sensors (Hair hygrometer - Thiess, Gottingen 2m above surface)
- Surface pressure (Precision barometer (aneroid) (Hartmann & Braun, Hamburg))
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| 1983/1984 | 15m mast replaced with 45m mast to measure vertical profiles of; |
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- Air temperatures (Pt-100 (Lambrecht, Gottingen 8 heights between 0.5 and 45m))
- Snow temperatures (Pt-100 (Lambrecht, Gottingen 6 heights between 0.25 and 6m - stopped in July))
- Wind speed (Thiess, Gottingen, 8 heights between 0.5 and 45m)
- Wind direction (Thiess, Gottingen, 7 heights between 1 and 45m)
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| | DCP installed |
| 1985 | On 45m mast; |
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- Air temperatures (Pt-100 (Lambrecht, Gottingen 6 heights between 2 and 45m))
- Wind speed (Thiess, Gottingen, 5 heights between 2 and 45m)
- Wind direction (Thiess, Gottingen, 5 heights between 2 and 45m)
|
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Also in use; Photoelectric sunshine recorder (Solar 111, Haenni and Cie., Switzerland)
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| 1986 | On 45m mast; |
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- Air temperatures (Pt-100 (Lambrecht, Gottingen 6 heights between 2 and 45m))
- Snow temperatures (Pt-100 Platinum resistance thermometers (6 heights between 0.25 and 5m))
- Wind speed (Thiess, Gottingen, 5 heights between 2 and 45m)
- Wind direction (Thiess, Gottingen, 5 heights between 2 and 45m)
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| 1987 | On 45m mast; |
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- Air temperatures (Pt-100 (Lambrecht, Gottingen 2 heights - 2m and 10m))
- Wind speed (Thiess, Gottingen, 2 heights - 2m and 10m)
- Wind direction (Thiess, Gottingen, 2 heights - 2m and 10m)
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| 1988 to 1991 | The following instruments were used; |
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- Surface pressure(Relative instruments; Hartmann&Braun 15241, digiquartz 215-AW002
and Absolute instruments (Friedrichs normal barometer 2K, fuess hypsometer) The digiquartz was 0.5m
below the surface of the snow unlike the other instruments that were affected by air conditioning.
To reduce to MSL height 32m was applied to 6 August 1989 and 36m after.
- Temperature (Pt-100 PRT, Thiess 2.1265.10 - artificially ventilated, radiation protected)
- Wind speed (Theis 4.3323.11.41)
- Wind direction (Theis 4.3323.11.41)
- Radiation
- Pyranometers (PSP, Eppley Laboratoru and CM11 Kipp and Zonen for global and replective solar radiation)
- Pyrradiometers (Lange GmbH, F.R.G for upward and downward total radiation)
- Photoelectric sunshine recorder (Solar 111, Haenni and Cie.)
- Humidity (2 pernix hair hygrometers, Lambrecht 800L100 and 1 Assman psychrometer)
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| 1992 | Programme was transferred to new station 8k SE of GvN |
| 1992 to 1994 | Instruments used; |
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- Surface pressure(2 quartz systems (Digiquartz, 215-AW002 - checked against 2 absolute
instruments (Friedrichs normal barometer 2K, Fuess hypsometer) both digiquartz are stationed
inside but with pipes leading below snow surface to stop air-conditioning and wind effects)
From 6th August 1989 up until 16th March 1992 station height is 36m. After 16th March new height
of 42m (for new station) is applied.
- Temperature (Pt-100, Thiess 2.1265.10)
- Wind speed (Thies 4.3323.11.41)
- Wind direction (Thies 4.3323.11.41)
- Radiation Radiation measurements are carried out with;
- Global Radiation; 5 pyranometers (CM11, Kipp&Zonen)
- Diffus sky radiation and reflected solar radiation (Glas, OC1-, RG8-filter)
- Direct radiation; 1 normal incidence pryheliometer (NIP, Eppley)
- Broadband UV; 1 UV-meter (TURV, Eppley)
- Upward and downward longwave; 2 pyrgeometers (replacing pyrradiometers)(PIR, Eppley)
- Sunshine; 1 photoelectric sunshine detector (Solar 111b, Haenni and Cie.)
After one year these sensors are exchanged with newly calibrated instruments.
- Humidity(2 Pernix hair hygrometers (Lambrecht 800L100 and one assman psychrometer)
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| There is a new instrument; the Ceilograph (Impulsphysik LD-WHX 05) used to
measure cloud bases of below 12000 feet.
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