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Record #164685:

A physically based method for correcting temperature data measured by naturally ventilated sensors over snow / Martin Arck, Dieter Scherer.

Title: A physically based method for correcting temperature data measured by naturally ventilated sensors over snow / Martin Arck, Dieter Scherer.
Author(s): Arck, Martin.
Scherer, Dieter.
Date: 2001.
In: Journal of Glaciology. (2001.), Vol. 47(159) (2001)
Abstract: Addresses use of temperature measurements made over snow with naturally ventilated instruments to determine sensible-heat flux and snowmelt rates. Reports measurements from melt season in the Kärkevagge, Abisko Mountains, Swedish Lapland. Describes instruments, their ventilation, radiation protection and response times. Analyses differences between temperatures measured by naturally ventilated and aspirated instruments (occasionally a few °C). Errors are associated with low wind speed and/or high upwelling short-wave radiation. Models effect of radiation on naturally ventilated instruments by considering heat fluxes and thermal balance between ambient air, sensor surface and sensor. Describes a temperature correction method based on optimising unknown model parameters. Corrected temperatures improve calculation of sensible-heat flux of a melting snow surface using bulk- transfer or bulk-aerodynamic methods. Corrections inadequate for vertical profile-based methods.
Notes:

Journal of Glaciology. Vol. 47(159) :665-670 (2001).

Keywords: 551.321 -- Glaciological methods and instruments.
551.578.46 -- Snow cover and snow patches.
536.5 -- Temperature measurement and control.
551.521 -- Radiation, atmospheric.
551.508 -- Meteorological instruments.
551.508.2 -- Radiation and temperature, meteorological instruments.
551.508.27 -- Meteorological screens and thermometer stands.
519.673 -- Modelling.
E3 -- Glaciology: instruments and methods.
SPRI record no.: 164685

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245 12 ‡aA physically based method for correcting temperature data measured by naturally ventilated sensors over snow /‡cMartin Arck, Dieter Scherer.
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500 ## ‡aJournal of Glaciology. Vol. 47(159) :665-670 (2001).
520 3# ‡aAddresses use of temperature measurements made over snow with naturally ventilated instruments to determine sensible-heat flux and snowmelt rates. Reports measurements from melt season in the Kärkevagge, Abisko Mountains, Swedish Lapland. Describes instruments, their ventilation, radiation protection and response times. Analyses differences between temperatures measured by naturally ventilated and aspirated instruments (occasionally a few °C). Errors are associated with low wind speed and/or high upwelling short-wave radiation. Models effect of radiation on naturally ventilated instruments by considering heat fluxes and thermal balance between ambient air, sensor surface and sensor. Describes a temperature correction method based on optimising unknown model parameters. Corrected temperatures improve calculation of sensible-heat flux of a melting snow surface using bulk- transfer or bulk-aerodynamic methods. Corrections inadequate for vertical profile-based methods.
650 07 ‡a551.321 -- Glaciological methods and instruments.‡2udc
650 07 ‡a551.578.46 -- Snow cover and snow patches.‡2udc
650 07 ‡a536.5 -- Temperature measurement and control.‡2udc
650 07 ‡a551.521 -- Radiation, atmospheric.‡2udc
650 07 ‡a551.508 -- Meteorological instruments.‡2udc
650 07 ‡a551.508.2 -- Radiation and temperature, meteorological instruments.‡2udc
650 07 ‡a551.508.27 -- Meteorological screens and thermometer stands.‡2udc
650 07 ‡a519.673 -- Modelling.‡2udc
650 07 ‡aE3 -- Glaciology: instruments and methods.‡2local
700 1# ‡aScherer, Dieter.
773 0# ‡7nnas ‡tJournal of Glaciology. ‡gVol. 47(159) (2001) ‡wSPRI-20534
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