Eppley short and long wave hemispheric radiometers
Purpose of Participation
- Measurement of the vertical profile of the solar and terrestrical radiation balance
Instrument description
The pyrgeometers consist of thermopiles shielded by a silicone hemisphere with a transmittance in the 4 top 40 (mu)m spectral range. The pyranometers are standard short wave hemispheric instruments.
| Species | short and long wave radiation |
| Method | |
| Quantity primary | hemispheric short and long wave radiation |
| Quantity secondary | vertical radiation profiles |
| Spectral range | solar spectrum |
| Altitude range | aircraft height |
| Vertical resolution | some 10m |
| Temporal resolution | 1 second |
| Operation | continuous |
| Precision | 2 W/m ² |
| Data availability (during campaign) | next day |
| Final data (after campaign) | 3 month |
References
Kottmeier, C. ,1996. User Handbook for the Polar2 and Polar4 research aircraft. Alfred-Wegener-Institut für Polar- und Meeresforschung, Bremerhaven, 46pp.
Freese, D., Kottmeier, C., 1998. Radiation effects between stratus clouds and Polar marine surfaces. Boundary-Layer Meteorology, 87, 331-356.
Freese, D., 1999. Solare und terrestrische Strahlungswechselwirkung zwischen arktischen Eisflächen und Wolken. Berichte zur Polarforschung 312, Alfred-Wegener Institut für Polar- und Meeresforschung, ISSN 0176-5027, 116pp.