Polar Portal ########################################################## Daily and accumulated surface mass budget and melt area is calculated using output from the DMI HARMONIE-AROME IGB model. This model is run daily for weather prediction purposes and the SMB model output is provided here purely for information purposes. While we do strive to provide data in near real-time, DMI takes no responsibility for any errors, gaps or other data deficiencies or any losses suffered as a result of these. The surface mass balance model is described in Langen et al., 2017 Liquid Water Flow and Retention on the Greenland Ice Sheet in the Regional Climate Model HIRHAM5: Local and Large-Scale Impacts , Frontiers in Earth Science, 4  (https://www.frontiersin.org/article/10.3389/feart.2016.00110). PLEASE NOTE: Surface mass balance is a model product augmented with observations. In an initial set-up ("assimilation") step, the HARMONIE-AROME model makes a short term forecast which is compared to meteorological observations and, if necessary, slightly corrected. This observation-enhanced model field is then used as a basis to run the dedicated surface mass balance model. This implies that the real-time calculated surface mass balance depends on the underlying operational weather model. Operational models are routinely updated, and even though the results based on the different models resemble each other, they are not identical. As a consequence, time series of the calculated surface mass balances or the comparison of results from different years should be treated with some caution. Note that the long-term climatology used in the polarportal plots (the average period from 1981-2010) are based on similar output from a different climate model, HIRHAM5 also run at DMI using the ERA-Interim reanalysis (Mottram et al., 2017 Surface mass balance of the Greenland ice sheet in the regional climate model HIRHAM5: Present state and future prospects, Journal of Low Temperature Science, 75, 105-115: https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/65106/1/12_105-115.pdf). However, the same SMB model is used to calculate melt and SMB for the background period so that the variables are comparable. Data from this constant version is also freely available to download (see: http://www.prudence.dmi.dk/data/temp/RUM/HIRHAM/Greenland/ERAI). Please acknowledge DMI/Polar Portal if you use this data in published works. We recommend that you contact us before working with the data to avoid possible misinterpretation. Many more variables are available and we can supply further data for scientific purposes. Please contact info@polarportal.dk. ########################################################## Date MeltArea(%) 20210101 0.000 % 20210102 0.000 % 20210103 0.000 % 20210104 0.000 % 20210105 0.000 % 20210106 0.000 % 20210107 0.049 % 20210108 0.088 % 20210109 0.000 % 20210110 0.000 % 20210111 0.000 % 20210112 0.000 % 20210113 0.002 % 20210114 0.000 % 20210115 0.000 % 20210116 0.000 % 20210117 0.000 % 20210118 0.000 % 20210119 0.000 % 20210120 0.000 % 20210121 0.000 % 20210122 0.000 % 20210123 0.000 % 20210124 0.000 % 20210125 0.000 % 20210126 0.000 % 20210127 0.002 % 20210128 0.000 % 20210129 0.008 % 20210130 0.003 % 20210131 0.000 % 20210201 0.002 % 20210202 0.013 % 20210203 0.000 % 20210204 0.002 % 20210205 0.002 % 20210206 0.002 % 20210207 0.002 % 20210208 0.002 % 20210209 0.000 % 20210210 0.000 % 20210211 0.000 % 20210212 0.000 % 20210213 0.000 % 20210214 0.000 % 20210215 0.000 % 20210216 0.002 % 20210217 0.000 % 20210218 0.002 % 20210219 0.014 % 20210220 0.002 % 20210221 0.005 % 20210222 0.000 % 20210223 0.000 % 20210224 0.000 % 20210225 0.000 % 20210226 0.000 % 20210227 0.000 % 20210228 0.000 % 20210301 0.000 % 20210302 0.000 % 20210303 0.002 % 20210304 0.036 % 20210305 0.123 % 20210306 0.009 % 20210307 0.041 % 20210308 0.005 % 20210309 0.000 % 20210310 0.000 % 20210311 0.000 % 20210312 0.000 % 20210313 0.000 % 20210314 0.000 % 20210315 0.000 % 20210316 0.013 % 20210317 0.037 % 20210318 0.259 % 20210319 0.010 % 20210320 0.012 % 20210321 0.015 % 20210322 0.000 % 20210323 0.000 % 20210324 0.000 % 20210325 0.000 % 20210326 0.000 % 20210327 0.000 % 20210328 0.000 % 20210329 0.000 % 20210330 0.002 % 20210331 0.063 % 20210401 0.134 % 20210402 0.493 % 20210403 0.675 % 20210404 0.744 % 20210405 0.666 % 20210406 0.666 % 20210407 0.529 % 20210408 0.307 % 20210409 0.273 % 20210410 0.349 % 20210411 0.251 % 20210412 0.164 % 20210413 0.330 % 20210414 0.226 % 20210415 0.062 % 20210416 0.024 % 20210417 0.026 % 20210418 0.007 % 20210419 0.009 % 20210420 0.024 % 20210421 0.046 % 20210422 0.082 % 20210423 0.196 % 20210424 0.979 % 20210425 1.976 % 20210426 3.083 % 20210427 3.625 % 20210428 3.421 % 20210429 3.299 % 20210430 3.333 % 20210501 2.983 % 20210502 2.205 % 20210503 1.755 % 20210504 1.669 % 20210505 1.605 % 20210506 1.240 % 20210507 0.582 % 20210508 0.768 % 20210509 0.826 % 20210510 0.831 % 20210511 0.840 % 20210512 0.741 % 20210513 0.881 % 20210514 1.000 % 20210515 1.133 % 20210516 1.173 % 20210517 1.172 % 20210518 1.056 % 20210519 1.225 % 20210520 1.351 % 20210521 1.395 % 20210522 1.614 % 20210523 1.705 % 20210524 1.688 % 20210525 2.170 % 20210526 4.354 % 20210527 8.003 % 20210528 9.500 % 20210529 10.189 % 20210530 10.491 % 20210531 10.341 % 20210601 10.413 % 20210602 10.495 % 20210603 10.517 % 20210604 10.554 % 20210605 12.063 % 20210606 13.708 % 20210607 14.254 % 20210608 14.581 % 20210609 14.741 % 20210610 14.553 % 20210611 14.680 % 20210612 14.645 % 20210613 13.846 % 20210614 13.663 % 20210615 13.570 % 20210616 13.667 % 20210617 13.310 % 20210618 13.233 % 20210619 14.072 % 20210620 15.145 % 20210621 15.139 % 20210622 15.219 % 20210623 16.396 % 20210624 28.084 % 20210625 32.377 % 20210626 33.187 % 20210627 33.957 % 20210628 35.030 % 20210629 35.979 % 20210630 35.433 % 20210701 32.831 % 20210702 33.652 % 20210703 36.305 % 20210704 36.968 % 20210705 37.719 % 20210706 37.066 % 20210707 35.856 % 20210708 30.000 % 20210709 31.451 % 20210710 31.359 % 20210711 37.504 % 20210712 39.978 % 20210713 41.346 % 20210714 42.096 % 20210715 42.686 % 20210716 39.492 % 20210717 41.721 % 20210718 42.849 % 20210719 50.622 % 20210720 48.148 % 20210721 48.501 % 20210722 45.677 % 20210723 45.868 % 20210724 45.128 % 20210725 40.471 % 20210726 42.074 % 20210727 53.168 % 20210728 66.895 % 20210729 63.845 % 20210730 61.245 % 20210731 62.212 % 20210801 58.250 % 20210802 54.979 % 20210803 48.861 % 20210804 43.532 % 20210805 36.104 % 20210806 32.777 % 20210807 28.394 % 20210808 27.706 % 20210809 25.976 % 20210810 26.966 % 20210811 30.479 % 20210812 29.185 % 20210813 31.082 % 20210814 52.252 % 20210815 57.468 % 20210816 51.533 % 20210817 46.866 % 20210818 45.646 % 20210819 41.915 % 20210820 38.471 % 20210821 37.470 % 20210822 29.441 % 20210823 20.613 % 20210824 23.871 % 20210825 29.253 % 20210826 25.145 % 20210827 20.339 % 20210828 17.637 % 20210829 12.308 % 20210830 9.390 % 20210831 9.346 % 20210901 11.343 % 20210902 13.800 % 20210903 13.960 % 20210904 7.926 % 20210905 5.653 % 20210906 4.332 % 20210907 3.890 % 20210908 4.343 % 20210909 3.297 % 20210910 1.726 % 20210911 1.724 % 20210912 1.296 % 20210913 1.192 % 20210914 0.924 % 20210915 0.619 % 20210916 0.478 % 20210917 0.456 % 20210918 0.520 % 20210919 0.359 % 20210920 0.180 % 20210921 0.073 % 20210922 0.449 % 20210923 0.492 % 20210924 0.012 % 20210925 0.039 % 20210926 0.027 % 20210927 0.014 % 20210928 0.017 % 20210929 0.021 % 20210930 0.036 % 20211001 0.077 % 20211002 0.230 % 20211003 0.106 % 20211004 0.034 % 20211005 0.024 % 20211006 0.017 % 20211007 0.009 % 20211008 0.000 % 20211009 0.000 % 20211010 0.007 % 20211011 0.061 % 20211012 0.048 % 20211013 0.058 % 20211014 0.043 % 20211015 0.034 % 20211016 0.010 % 20211017 0.000 % 20211018 0.000 % 20211019 0.007 % 20211020 0.014 % 20211021 0.003 % 20211022 0.032 % 20211023 0.000 % 20211024 0.000 % 20211025 0.005 % 20211026 0.000 % 20211027 0.000 % 20211028 0.000 % 20211029 0.000 % 20211030 0.000 % 20211031 0.000 % 20211101 0.002 % 20211102 0.084 % 20211103 0.072 % 20211104 0.000 % 20211105 0.000 % 20211106 0.000 % 20211107 0.000 % 20211108 0.000 % 20211109 0.000 % 20211110 0.000 % 20211111 0.000 % 20211112 0.002 % 20211113 0.000 % 20211114 0.000 % 20211115 0.000 % 20211116 0.000 % 20211117 0.000 % 20211118 0.000 % 20211119 0.000 % 20211120 0.007 % 20211121 0.034 % 20211122 0.000 % 20211123 0.000 % 20211124 0.049 % 20211125 0.214 % 20211126 1.153 % 20211127 2.402 % 20211128 1.974 % 20211129 0.128 % 20211130 0.000 % 20211201 0.282 % 20211202 0.000 % 20211203 0.000 % 20211204 0.002 % 20211205 0.008 % 20211206 0.000 % 20211207 0.000 % 20211208 0.000 % 20211209 0.000 % 20211210 0.000 % 20211211 0.000 % 20211212 0.003 % 20211213 0.000 % 20211214 0.000 % 20211215 0.000 % 20211216 0.000 % 20211217 0.000 % 20211218 0.000 % 20211219 0.002 % 20211220 0.053 % 20211221 0.046 % 20211222 0.009 % 20211223 0.003 % 20211224 0.000 % 20211225 0.002 % 20211226 0.000 % 20211227 0.000 % 20211228 0.000 % 20211229 0.000 % 20211230 0.000 % 20211231 0.000 %