Stephen Hudson

Current activities

Projects

STASIS (FRINATEK programme, Norwegian Research Council, 2013–2017) - Solar radiation under sea ice

FRINAT - Arctic sea ice (FRINAT programme, Norwegian Research Council, 2010–2013) - Radiation budget studies on Arctic sea ice

ICE-Fluxes (Centre for Ice, Climate and Ecosystems) - Study of processes controlling atmosphere-ice-ocean interactions

POLRES-SeaIce (NOR-USA collaborative project, Norwegian Research Council)

Areas of interest and expertise

My general interest is in radiation processes and energy budgets on snow- or ice-covered areas.  My recent work has focused on solar radiation and sea ice in the Arctic (near Svalbard and Barrow), but I'm also pulling in other components of the radiation and energy budget. I'm currently particularly interested in observing the surface energy budget of sea ice, especially during the melt season, in a way that allows us to see how the large scale (satellite pixel or model grid cell) budget is determined by and modified by small scale variability and processes such as melt ponds. In addition, I'm working to develop new installations to monitor the radiation budget in the Ny-Ålesund region of Svalbard, with a focus on the radiation budget on Kongsvegen glacier and on the effect of the lower atmosphere on the incoming radiation in town.

My earlier work was related, but focused on the Antarctic Plateau, with campaigns from South Pole and Dome C.

References/Bibliography

First author peer-reviewed publications

Hudson, S. R., M. A. Granskog, T. I. Karlsen, and K. Fossan (2012), Observing the radiation budget of sea ice at different scales, Cold Regions Sci. and Tech., 82, 14–20, doi:10.1016/j.coldregions.2012.05.002. (Link to PDF)

Hudson, S. R. (2011), Estimating the global radiative impact of the sea ice–albedo feedback in the Arctic, J. Geophys. Res., 116, D16102, doi:10.1029/2011JD015804. (Link to PDF)

Hudson, S. R., S. Kato, and S. G. Warren (2010), Evaluating CERES angular distribution models for snow using surface reflectance observations from the East Antarctic Plateau, J. Geophys. Res., 115, D03101, doi:10.1029/2009JD012624.  (Link to PDF)

Hudson, S. R., S. G. Warren, and S. Kato (2010), A comparison of shortwave reflectance over the East Antarctic Plateau observed by CERES to that estimated from surface reflectance observations, J. Geophys. Res., 115, D20110, doi:10.1029/2010JD013912.  (Link to PDF)

Hudson, S. R., and S. G. Warren (2007), An explanation for the effect of clouds over snow on the top-of-atmosphere bidirectional reflectance, J. Geophys. Res., 112, D19202, doi:10.1029/2007JD008541.  (Link to PDF)

Hudson, S. R., S. G. Warren, R. E. Brandt, T. C. Grenfell, and D. Six (2006), Spectral bidirectional reflectance of Antarctic snow: Measurements and parameterization, J. Geophys. Res., 111, D18106, doi:10.1029/2006JD007290.  (Link to PDF)

Other peer-reviewed publications

Mauritzen, C., and coauthors (2011), Closing the loop – Approaches to monitoring the state of the Arctic Mediterranean during the International Polar Year 2007–2008, Progress in Oceanography, 90, 62–89, doi:10.1016/j.pocean.2011.02.010.

Nicolaus, M., S. Gerland, S. R. Hudson, S. Hanson, J. Haapala, and D. K. Perovich (2010), Seasonality of spectralalbedo and transmittance as observed in the Arctic Transpolar Drift in 2007, J. Geophys. Res., 115, C11011, doi:10.1029/2009JC006074.

Nicolaus, M., S. R. Hudson, S. Gerland, and K. Munderloh (2010), A modern concept for autonomous and continuous measurements of spectral albedo and transmittance of sea ice, Cold Regions Sci. and Tech., 62, 14–28, doi:10.1016/j.coldregions.2010.03.001.

Warren, S. G., and S. R. Hudson (2003), Bacterial activity in South Pole snow is questionable, Appl. Environ. Microbiol., 69, 6340–41, doi:10.1128/AEM.69.10.6340-6341.2003. (Comment)

DeGaetano, A. T., and S. R. Hudson (2000), Specification of soil volume and irrigation frequency for urban trees, J. Urban Planning and Development, 126(4), 153–165, doi:10.1061/(ASCE)0733-9488(2000)126:4(153).