Greenland monthly surface mass balance 1840-2012

<p>This surface mass balance (SMB) product&nbsp;is based on Box (2013), with refinements&nbsp;described by Schlegel et al. (2016), Appendix.&nbsp; It includes monthly estimates of accumulation and melt, as well as estimates for SMB error for the historical period (1960-2012).</p> <p>It is the results of a&nbsp;calibration of observational data to regional climate model (RCM) output, in this case RACMO2.3 &nbsp;(No&euml;l et al., 2016).&nbsp;The calibration for temperature (T) and SMB components is based on a 53-year overlap period (1960-2012). &nbsp;Note that the overlap period for the calibration of snow accumulation rate is shorter, since ice core data availability drops after 1999. Calibration is made using linear regression coefficients for 5 km grid cells that match the average of the reconstruction to RACMO2.3. &nbsp;The RACMO2.3 output are resampled and reprojected from the native 0.1 deg (~10 km) grid to a 5 km grid better resolving areas where sharp gradients occur, especially near the ice margin where mass fluxes are largest.&nbsp;</p>