Mass balance is calculated from direct field measurements in combination with weather data and imagery analyses. Mass balance is calculated at both a seasonal and annual time-step at each glacier in both a conventional and reference surface format (Cogley et al., 2011). The analysis framework (Van Beusekom et al., 2010; O’Neel et al., 2014) is identical at each glacier to enable cross-comparison between output time series. Vocabulary used follows Cogley et al. (2011) Glossary of glacier mass balance.
Cogley, J. G., Hock, R., Rasmussen, L. A., Arendt, A. A., Bauder, A., Braithwaite, R. J., et al. (2011). Glossary of Glacier Mass Balance and Related Terms. IHP-VII Technical Documents in Hydrology, 86.
O’Neel, S., Hood, E., Arendt, A., and Sass, L., 2014, Assessing streamflow sensitivity to variations in glacier mass balance: Climatic Change, v. 123, no. 2, p. 1–13.
Van Beusekom, A.E., O’Neel, S., March, R.S., Sass, L.C., and Cox, L.H., 2010, Re-analysis of Alaskan benchmark glacier mass-balance data using the index method: U.S. Geological Survey Scientific Investigations Report, v. 2010, no. 5247, p. 16.