Heating and dehumidification in production greenhouses at northern latitudes: energy use

Summertime ozone at northern mid-latitudes

Carnivores in Northern Latitudes

The first mammals were probably nocturnal (McNab 1978; Kemp 1982) and many extant orders of small mammals have retained this trait. This behaviour is presumably due to the measure of protection from predation that darkness provides (Crawford 1934; Falls 1968; Daan and Aschoff 1982). Large, herbivorous mammals are less restricted to the nocturnal phase (e.g. Bunnell and Harestad 1990) and have b...

Economic evaluation of biomass heating systems: a case of greenhouses in northern Greece

In this paper, a methodology for the evaluation of the economic viability of investment plans for biomass heating systems is applied. The factors participating in the development and application of biomass heating systems as well as the financial criteria used for the evaluation of the investment are analytically presented. The methodology is applied to the economic evaluation of two greenhouse...

Phase Calibration Sources in the Northern Sky at Galactic Latitudes

Summertime low - ozone episodes at northern high latitudes

By Y. J. ORSOLINI1∗, H. ESKES2, G. HANSEN1, U.-P. HOPPE3, A. KYLLING1, E. KYRÖ4, J. NOTHOLT5, R. VAN DER A2 and P. VON DER GATHEN6 1Norwegian Institute for Air Research, Kjeller, Norway 2Royal Netherlands Meteorological Institute, De Bilt, the Netherlands 3Norwegian Defence Research Establishment, Kjeller, Norway 4Finnish Meteorological Institute, Sodankyla, Finland 5University of Bremen, Germa...