Spatial and interannual patterns of winter N-factors near

A 150-km2 area near Barrow, Alaska, was monitored at hourly intervals between 2001 and 2005 using ~70 data loggers recording air and near-surface soil temperature as part of the Barrow Urban Heat Island Study. Data records for the winter period were used to calculate site-specific n-factors, the rat...

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Bibliographic Details
Main Authors: Kenneth M. Hinkel, Anna E. Klene, Frederick E. Nelson
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Published: press 2008
Subjects:
Alaska
air temperature
n-factor
permafrost
snow cover
urbanization
Barrow
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.578.6479
http://www.cas.umt.edu/geography/documents/Hinkel_et_al_NICOP_2008.pdf
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Summary:A 150-km2 area near Barrow, Alaska, was monitored at hourly intervals between 2001 and 2005 using ~70 data loggers recording air and near-surface soil temperature as part of the Barrow Urban Heat Island Study. Data records for the winter period were used to calculate site-specific n-factors, the ratio between seasonally cumulated degree days at the ground surface to those at standard screen height at corresponding locations. Winter n-factors have similar magnitudes between sites and across years, with typical averages of 0.65-0.70. However, n-factor magnitudes are generally lower and their spatial variability much higher near the urbanized area, owing to heterogeneous snow accumulation and the effects of drifting snow.

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