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(%) 20200101 0 % 20200102 0 % 20200103 0 % 20200104 0 % 20200105 0 % 20200106 0 % 20200107 0 % 20200108 0 % 20200109 0 % 20200110 0.0084313 % 20200111 0.00677941 % 20200112 0 % 20200113 0 % 20200114 0 % 20200115 0 % 20200116 0 % 20200117 0 % 20200118 0 % 20200119 0 % 20200120 0 % 20200121 0 % 20200122 0 % 20200123 0 % 20200124 0 % 20200125 0.00168526 % 20200126 0 % 20200127 0 % 20200128 0 % 20200129 0 % 20200130 0 % 20200131 0 % 20200201 0 % 20200202 0 % 20200203 0.00168764 % 20200204 0 % 20200205 0 % 20200206 0 % 20200207 0 % 20200208 0 % 20200209 0.0017204 % 20200210 0 % 20200211 0 % 20200212 0 % 20200213 0 % 20200214 0 % 20200215 0 % 20200216 0 % 20200217 0 % 20200218 0 % 20200219 0.00168764 % 20200220 0.00168764 % 20200221 0.00168764 % 20200222 0 % 20200223 0 % 20200224 0.00168764 % 20200225 0.00168764 % 20200226 0.00168764 % 20200227 0 % 20200228 0 % 20200229 0 % 20200301 0 % 20200302 0 % 20200303 0 % 20200304 0 % 20200305 0 % 20200306 0 % 20200307 0 % 20200308 0 % 20200309 0 % 20200310 0 % 20200311 0 % 20200312 0 % 20200313 0 % 20200314 0 % 20200315 0 % 20200316 0 % 20200317 0 % 20200318 0 % 20200319 0.00171498 % 20200320 0 % 20200321 0 % 20200322 0 % 20200323 0 % 20200324 0 % 20200325 0 % 20200326 0 % 20200327 0 % 20200328 0.0427161 % 20200329 0.162012 % 20200330 0.435812 % 20200331 0.290793 % 20200401 0.115533 % 20200402 0.00680282 % 20200403 0.00340774 % 20200404 0.0017204 % 20200405 0 % 20200406 0 % 20200407 0 % 20200408 0 % 20200409 0.00168764 % 20200410 0.00344073 % 20200411 0.0290391 % 20200412 0.279269 % 20200413 0.106043 % 20200414 0.0683904 % 20200415 0.0785517 % 20200416 0.0937848 % 20200417 0.194861 % 20200418 0.439 % 20200419 0.358 % 20200420 0.346 % 20200421 0.766 % 20200422 1.419 % 20200423 2.256 % 20200424 2.359 % 20200425 2.368 % 20200426 2.146 % 20200427 1.980 % 20200428 1.917 % 20200429 1.696 % 20200430 1.530 % 20200501 1.089 % 20200502 0.795 % 20200503 0.994 % 20200504 1.362 % 20200505 1.389 % 20200506 1.607 % 20200507 1.739 % 20200508 1.774 % 20200509 2.126 % 20200510 2.215 % 20200511 3.119 % 20200512 3.951 % 20200513 5.458 % 20200514 6.006 % 20200515 6.220 % 20200516 6.203 % 20200517 5.569 % 20200518 5.506 % 20200519 4.691 % 20200520 4.308 % 20200521 4.080 % 20200522 4.205 % 20200523 4.853 % 20200524 5.016 % 20200525 4.970 % 20200526 5.508 % 20200527 5.675 % 20200528 5.619 % 20200529 5.990 % 20200530 6.994 % 20200531 7.111 % 20200601 7.946 % 20200602 10.906 % 20200603 17.808 % 20200604 18.895 % 20200605 20.510 % 20200606 21.796 % 20200607 22.269 % 20200608 22.999 % 20200609 23.785 % 20200610 24.413 % 20200611 25.340 % 20200612 21.235 % 20200613 23.702 % 20200614 24.895 % 20200615 24.106 % 20200616 23.940 % 20200617 23.727 % 20200618 23.979 % 20200619 24.070 % 20200620 22.410 % 20200621 26.092 % 20200622 29.714 % 20200623 32.155 % 20200624 34.502 % 20200625 35.843 % 20200626 36.438 % 20200627 37.220 % 20200628 37.484 % 20200629 37.107 % 20200630 38.260 % 20200701 38.539 % 20200702 37.316 % 20200703 36.800 % 20200704 36.046 % 20200705 36.516 % 20200706 35.103 % 20200707 35.547 % 20200708 34.854 % 20200709 37.827 % 20200710 42.345 % 20200711 39.736 % 20200712 38.651 % 20200713 38.735 % 20200714 37.861 % 20200715 34.765 % 20200716 35.097 % 20200717 33.995 % 20200718 34.773 % 20200719 36.783 % 20200720 37.476 % 20200721 41.813 % 20200722 42.747 % 20200723 42.452 % 20200724 42.447 % 20200725 40.292 % 20200726 41.359 % 20200727 41.344 % 20200728 41.387 % 20200729 37.567 % 20200730 36.499 % 20200731 32.954 % 20200801 31.114 % 20200802 31.096 % 20200803 29.652 % 20200804 25.315 % 20200805 23.497 % 20200806 24.356 % 20200807 27.403 % 20200808 28.066 % 20200809 26.687 % 20200810 25.727 % 20200811 24.454 % 20200812 28.742 % 20200813 26.471 % 20200814 20.545 % 20200815 19.481 % 20200816 20.713 % 20200817 24.099 % 20200818 24.402 % 20200819 27.996 % 20200820 33.352 % 20200821 33.026 % 20200822 27.696 % 20200823 20.437 % 20200824 17.296 % 20200825 12.287 % 20200826 10.816 % 20200827 10.746 % 20200828 12.318 % 20200829 11.873 % 20200830 11.423 % 20200831 9.552 % 20200901 6.010 % 20200902 5.159 % 20200903 3.894 % 20200904 5.753 % 20200905 7.376 % 20200906 7.466 % 20200907 5.898 % 20200908 3.197 % 20200909 3.656 % 20200910 2.371 % 20200911 0.633 % 20200912 0.417 % 20200913 0.262 % 20200914 0.382 % 20200915 1.155 % 20200916 2.278 % 20200917 1.780 % 20200918 1.206 % 20200919 1.124 % 20200920 0.258 % 20200921 0.184 % 20200922 0.083 % 20200923 0.015 % 20200924 0.212 % 20200925 0.452 % 20200926 0.350 % 20200927 0.167 % 20200928 0.058 % 20200929 0.012 % 20200930 0.000 % 20201001 0.033 % 20201002 0.085 % 20201003 0.068 % 20201004 0.118 % 20201005 0.070 % 20201006 0.275 % 20201007 0.204 % 20201008 0.183 % 20201009 0.249 % 20201010 0.380 % 20201011 0.321 % 20201012 0.533 % 20201013 0.969 % 20201014 0.673 % 20201015 0.605 % 20201016 0.808 % 20201017 1.476 % 20201018 2.270 % 20201019 0.576 % 20201020 0.077 % 20201021 0.002 % 20201022 0.000 % 20201023 0.000 % 20201024 0.000 % 20201025 0.000 % 20201026 0.000 % 20201027 0.000 % 20201028 0.000 % 20201029 0.000 % 20201030 0.000 % 20201031 0.000 % 20201101 0.000 % 20201102 0.002 % 20201103 0.274 % 20201104 0.014 % 20201105 0.000 % 20201106 0.000 % 20201107 0.000 % 20201108 0.000 % 20201109 0.024 % 20201110 0.000 % 20201111 0.000 % 20201112 0.000 % 20201113 0.000 % 20201114 0.000 % 20201115 0.000 % 20201116 0.000 % 20201117 0.000 % 20201118 0.000 % 20201119 0.000 % 20201120 0.000 % 20201121 0.000 % 20201122 0.000 % 20201123 0.000 % 20201124 0.000 % 20201125 0.000 % 20201126 0.000 % 20201127 0.000 % 20201128 0.000 % 20201129 0.000 % 20201130 0.000 % 20201201 0.000 % 20201202 0.002 % 20201203 0.002 % 20201204 0.000 % 20201205 0.010 % 20201206 0.002 % 20201207 0.002 % 20201208 0.000 % 20201209 0.000 % 20201210 0.000 % 20201211 0.000 % 20201212 0.002 % 20201213 0.002 % 20201214 0.000 % 20201215 0.000 % 20201216 0.000 % 20201217 0.002 % 20201218 0.000 % 20201219 0.000 % 20201220 0.002 % 20201221 0.002 % 20201222 0.000 % 20201223 0.007 % 20201224 0.000 % 20201225 0.000 % 20201226 0.002 % 20201227 0.000 % 20201228 0.038 % 20201229 0.000 % 20201230 0.000 % 20201231 0.019 %