Net Radiation

Bounding the role of surface radiation in Arctic climate with in situ observations

IASOA will be hosting a session at the 2016 European Geosciences Union this April. The hosted session will include 15 contributions through short PICO: Presenting Interactive Contant presentations. The session hosted by IASOA is entitled: Regionally integrated perspectives on Arctic processes from the International Arctic Systems for Observing the Atmosphere (IASOA), and will be convened by Christopher Cox, with co-conveners Timo Vihma, Taneil Uttal, Sandy Starkweather, and William Neff.



The IASOA Radiation working group convened in Vancouver, May 2013, to begin to identify key Arctic atmospheric radiation questions.


Average daily albedo calculated from the NOAA Barrow Observatory (BRW) surface radiation monitoring station located on the coastline of the Chuckchi Sea at Barrow, Alaska (71.323 ºN, 156.611ºW, 11 meters above sea level). The blue-dashed line shows the average of all years since 1985 when the record began and the blue shading is the +/- one standard deviation variability. The red line shows the average daily albedo for 2015 through June 30th. The first snow free date is identified by the first day that the albedo falls below 0.3 (Stone et al. 2002). In 2015 this date was May 28th, sixteen days earlier than the average from available data, which is June 13th.


Radiation measurements are a crucial component of the surface energy balance and provide evidence of the impacts of clouds, aerosols, and cryospheric changes.  Seven of the IASOA observatories are current or candidate Baseline Surface Radiation Network (BSRN) sites.  These sites must pass the highest quality control to assure the accuracy.  Most IASOA radiation datasets are available through our Data Access Portal, some are soon to be available.  Visit Data->Data-at-a-Glance to access this data.  



IASOA works collaboratively with BSRN's Cold Climate Issues Working Group to tackle Arctic specific observing issues.


The Arctic Surface Radiation Budget:
A candidate topic for the Arctic Report Card
Authors of Briefing Paper: 22 April 2013
Von P. Walden, University of Idaho
Chris Cox, University of Idaho and CIRES


IASOA experts have looked extensively at issues for successful year-round radiation data collection in the Arctic.


Publication Highlights

Cox, C. J., V. P. Walden, and P. M. Rowe, 2012: A comparison of the atmospheric conditions at Eureka, Canada, and Barrow, Alaska (2006–2008). J Geophys Res-Atmos, 117.

Long, C. N., and Y. Shi, 2008: An automated quality assessment and control algorithm for surface radiation measurements. J. Open Atmos. Sci, 2, 23–37.

Matsui, N. and Coauthors, 2012: Evaluation of Arctic broadband surface radiation measurements. Atmos Meas Tech, 5, 429–438, doi:10.5194/amt-5-429-2012.

Ohmura, A. and Coauthors, 1998: Baseline Surface Radiation Network (BSRN/WCRP): New precision radiometry for climate research. B Am Meteorol Soc, 79, 2115–2136


Von Walden | Barrow, Summit (Group Lead)

Chris Cox | pan-Arctic

Marion Maturilli | Ny-Alesund

Nate Miller | Greenland

Robert Stone | Alert, Barrow

Chuck Long | Barrow, Summit

Thomas Haiden | Forecast Model Validation

Vasily Kustov | Tiksi

Jeff Key | Remote Sensing