DOI: 10.6084/m9.figshare.7355024.v1
title: Sutterley et al. GRL (2018) SMB Altimetry v201806

description: <b>Data format:<br></b><br><i>GR_NASA_ICEBRIDGE_WGS84_ATM_2015_04_18.H5</i>HDF5 file with seasonal elevation data from 2015 NASA Operation IceBridge campaign (Southwest Coastal A). Contains co-registered triangulated data from 10 days in Fall 2015.<br><i>GR_NASA_ICEBRIDGE_WGS84_ATM_2015_05_05.H5</i>HDF5 file with seasonal elevation data from 2015 NASA Operation IceBridge campaign (IceSat-2 North / CryoSat-2 SARI). Contains co-registered triangulated data from 7 days in Fall 2015.<br><i>GR_NASA_ICEBRIDGE_WGS84_ATM_2016_05_14.H5</i>HDF5 file with seasonal elevation data from 2016 NASA Operation IceBridge campaign (Land Ice SW Coastal A). Contains co-registered triangulated data from 8 days in Fall 2016.<br> Triangulated data is stored in groups based on the instrument and acquisition date (INST_YYYY-MM-DD)<br><b> HDF5 data variables:</b> elev: Surface elevation [m] error: Elevation error [m] lon: Longitude of measurement [degrees east] lat: Latitude of measurement [degrees north] time: Acquisition time measured as seconds elapsed since January 1, 2000 12:00:00 UTC (J2000 seconds) ITRF: Offset due to changes in reference frame at the measurement position at the acquisition time [m] gia_uplift: GIA induced crustal uplift rate from a combination of coefficients from Simpson et al. (2009) [m/yr] gia_error: Estimated GIA crustal uplift rate error calculated from RMS of coefficients from Simpson et al. (2009) [m/yr] tide_load: Tidal elevation from TPXO7.2 harmonic constants at the measurement position at the acquisition time [m] tide_pole: Solid Earth pole tide displacements at the measurement position at the acquisition time [m] IQR: Mask calculated using a interquartile range algorithm (Pritchard et al., 2009) RDE: Mask calculated using a robust dispersion estimator algorithm (Smith et al., 2017)<br> Geophysical corrections need to be subtracted from the elevation measurements ITRF offsets need to be added to the elevation measurements<br><br><i>GR_NASA_TRIANGULATED_SMB_vs_Elevation_SW_50_ATM_2015_04_18.txt</i><i>GR_NASA_TRIANGULATED_SMB_vs_Elevation_NO_50_ATM_2015_05_05.txt</i><i>GR_NASA_TRIANGULATED_SMB_vs_Elevation_SW_50_ATM_2016_05_14.txt</i> Summation of seasonal elevation data and SMB outputs from RACMO2.3p2 and MARv3.5.2 over elevation bands <br><b> Data columns:</b> lower elevation bound [m] upper elevation bounds[m] mass change from Operation IceBridge [mm w.e.] mass error from Operation IceBridge [mm w.e.] mass change from RACMO [mm w.e.] mass error from RACMO [mm w.e.] mass change from MAR [mm w.e.] mass error from MAR [mm w.e.]<br><br><i>GR_NASA_TRIANGULATED_ELEVATION_Hiawatha_Gletscher_WGS84_2015-05-05.txt</i><i>GR_NASA_TRIANGULATED_ELEVATION_K-transect_WGS84_2014-04-10.txt</i><i>GR_NASA_TRIANGULATED_ELEVATION_Promice_WGS84_2009-04-20.txt</i><i>GR_NASA_TRIANGULATED_ELEVATION_Saqqap_Sermersua_WGS84_2015-04-22.txt</i> Time series of elevation for the 4 locations in Sutterley et al. (2018)<br><b> Data columns:</b> lat [degrees north] lon [degrees east] date [decimal years] elevation [m] error [m] count<br><br><b>Disclaimer:</b>This data provided here is not sponsored or maintained by the Universities Space Research Association (USRA) or NASA. It is provided here under a Creative Commons 4.0 license but with no guarantees whatsoever.<br>