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  • Mountain Terrain Atmospheric Modeling and Observations (MATERHORN) x
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Manuela Lehner, C. David Whiteman, Sebastian W. Hoch, Derek Jensen, Eric R. Pardyjak, Laura S. Leo, Silvana Di Sabatino, and Harindra J. S. Fernando

. Charland and B. Blaylock assisted with tethersonde ascents, and M. Jeglum helped with data access. Further, we thank three anonymous reviewers for their helpful comments on the manuscript. ERA-Interim data were obtained through the European Centre for Medium-Range Weather Forecasts data archive. REFERENCES Barr , S. , and M. M. Orgill , 1989 : Influence of external meteorology on nocturnal valley drainage winds . J. Appl. Meteor. , 28 , 497 – 517 , doi: 10.1175/1520-0450(1989)028<0497:IOEMON>2

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Jeffrey D. Massey, W. James Steenburgh, Sebastian W. Hoch, and Derek D. Jensen

observed SEB components over the Svalbard Archipelago in the Arctic Ocean north of Europe, identifying overpredictions of R n and the Bowen ratio, which they attributed to an underprediction of cloud cover and soil moisture, respectively. A major source of uncertainty with such validation studies, however, is that SEB observations do not close (i.e., R n > H + LE + G ) because of the presence of a residual error term ( Foken 2008 ). This study focuses on the SEB components and associated

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Matthew E. Jeglum, Sebastian W. Hoch, Derek D. Jensen, Reneta Dimitrova, and Zachariah Silver

on the indicated day) to encompass the full nocturnal period. To investigate a possible connection between LTF occurrences and synoptic or mesoscale conditions, ERA-Interim reanalyses and additional observations at DPG were used. The ERA-Interim, a global reanalysis dataset operated by the European Centre for Medium-Range Weather Forecasts, is run with 60 vertical levels and a reduced Gaussian grid with 79-km spacing for surface and other gridpoint fields ( Dee et al. 2011 ). Using the ERA

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