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(%) 20190101 0.00678399 % 20190102 0.0170942 % 20190103 0.0257476 % 20190104 0.022325 % 20190105 0.0153769 % 20190106 0 % 20190107 0 % 20190108 0 % 20190109 0.00859058 % 20190110 0.0017204 % 20190111 0 % 20190112 0 % 20190113 0 % 20190114 0 % 20190115 0.00168793 % 20190116 0.00168793 % 20190117 0 % 20190118 0 % 20190119 0 % 20190120 0 % 20190121 0.0017204 % 20190122 0.00512814 % 20190123 0.00681519 % 20190124 0 % 20190125 0 % 20190126 0 % 20190127 0 % 20190128 0 % 20190129 0 % 20190130 0.00168764 % 20190131 0 % 20190201 0.00168793 % 20190202 0.00675054 % 20190203 0.00337556 % 20190204 0 % 20190205 0 % 20190206 0 % 20190207 0 % 20190208 0 % 20190209 0 % 20190210 0 % 20190211 0.00171498 % 20190212 0.00168646 % 20190213 0.00337409 % 20190214 0 % 20190215 0.00168764 % 20190216 0 % 20190217 0 % 20190218 0 % 20190219 0 % 20190220 0 % 20190221 0.00342649 % 20190222 0.00342649 % 20190223 0.00171276 % 20190224 0 % 20190225 0.00171276 % 20190226 0 % 20190227 0.00171276 % 20190228 0.00511538 % 20190301 0.00168764 % 20190302 0.00168793 % 20190303 0.00168793 % 20190304 0.00168764 % 20190305 0.00168764 % 20190306 0 % 20190307 0.00171498 % 20190308 0 % 20190309 0 % 20190310 0 % 20190311 0 % 20190312 0 % 20190313 0 % 20190314 0 % 20190315 0 % 20190316 0 % 20190317 0 % 20190318 0 % 20190319 0 % 20190320 0 % 20190321 0 % 20190322 0 % 20190323 0 % 20190324 0.00340791 % 20190325 0.00685796 % 20190326 0.00171945 % 20190327 0.00171945 % 20190328 0 % 20190329 0.00168734 % 20190330 0.00168734 % 20190331 0.00168734 % 20190401 0 % 20190402 0.246467 % 20190403 0.0953814 % 20190404 0.0935928 % 20190405 0.0460569 % 20190406 0.0357955 % 20190407 0.0955292 % 20190408 0.175781 % 20190409 0.29873 % 20190410 0.411494 % 20190411 0.590773 % 20190412 0.553151 % 20190413 1.28189 % 20190414 1.44872 % 20190415 1.63342 % 20190416 1.63552 % 20190417 1.40174 % 20190418 1.3966 % 20190419 1.6534 % 20190420 1.72195 % 20190421 1.53988 % 20190422 0.904859 % 20190423 0.843816 % 20190424 0.834236 % 20190425 1.43005 % 20190426 2.0322 % 20190427 2.65292 % 20190428 4.0552 % 20190429 4.94297 % 20190430 5.77867 % 20190501 6.58264 % 20190502 5.86952 % 20190503 4.65807 % 20190504 4.91384 % 20190505 5.41031 % 20190506 6.3507 % 20190507 7.52075 % 20190508 7.31919 % 20190509 5.73704 % 20190510 4.69781 % 20190511 3.77157 % 20190512 2.61641 % 20190513 2.59877 % 20190514 3.04088 % 20190515 4.90427 % 20190516 5.45185 % 20190517 5.68364 % 20190518 5.82466 % 20190519 5.92419 % 20190520 6.05639 % 20190521 6.04658 % 20190522 6.08445 % 20190523 5.88428 % 20190524 5.98203 % 20190525 6.22134 % 20190526 6.40648 % 20190527 6.35008 % 20190528 5.58885 % 20190529 5.6874 % 20190530 5.13586 % 20190531 4.09936 % 20190601 4.03762 % 20190602 4.06687 % 20190603 4.22242 % 20190604 4.31945 % 20190605 4.41858 % 20190606 5.28615 % 20190607 6.1668 % 20190608 7.15791 % 20190609 8.1655 % 20190610 8.7698 % 20190611 10.0499 % 20190612 23.3873 % 20190613 30.2652 % 20190614 32.225 % 20190615 33.0544 % 20190616 33.2338 % 20190617 31.3695 % 20190618 30.1928 % 20190619 30.4418 % 20190620 30.3998 % 20190621 30.764 % 20190622 31.4867 % 20190623 30.4567 % 20190624 30.258 % 20190625 32.1247 % 20190626 33.2012 % 20190627 34.2888 % 20190628 34.5585 % 20190629 36.8226 % 20190630 37.0263 % 20190701 36.8767 % 20190702 37.5066 % 20190703 38.2107 % 20190704 38.4352 % 20190705 38.6766 % 20190706 38.7807 % 20190707 38.7621 % 20190708 39.0657 % 20190709 40.5796 % 20190710 40.4857 % 20190711 38.4173 % 20190712 33.9707 % 20190713 33.7994 % 20190714 33.1115 % 20190715 32.5739 % 20190716 33.388 % 20190717 33.7673 % 20190718 33.2825 % 20190719 37.5757 % 20190720 40.7571 % 20190721 41.9221 % 20190722 42.3604 % 20190723 38.2219 % 20190724 36.3811 % 20190725 32.595 % 20190726 31.6582 % 20190727 31.8405 % 20190728 33.2072 % 20190729 37.4515 % 20190730 51.0205 % 20190731 56.551 % 20190801 57.6342 % 20190802 55.7362 % 20190803 49.6874 % 20190804 43.2893 % 20190805 36.8354 % 20190806 32.0927 % 20190807 31.7161 % 20190808 29.9172 % 20190809 26.7559 % 20190810 23.8084 % 20190811 21.9653 % 20190812 20.7197 % 20190813 19.313 % 20190814 16.627 % 20190815 16.1667 % 20190816 16.4113 % 20190817 15.7384 % 20190818 14.5597 % 20190819 13.7225 % 20190820 11.3526 % 20190821 10.075 % 20190822 9.82964 % 20190823 9.09285 % 20190824 9.06371 % 20190825 9.86463 % 20190826 9.57998 % 20190827 9.33539 % 20190828 8.37338 % 20190829 9.0426 % 20190830 9.75117 % 20190831 9.63188 % 20190901 8.8478 % 20190902 7.93925 % 20190903 6.4299 % 20190904 6.57933 % 20190905 6.01992 % 20190906 5.35122 % 20190907 5.70932 % 20190908 5.612 % 20190909 3.94525 % 20190910 3.15336 % 20190911 2.50143 % 20190912 2.04918 % 20190913 2.12837 % 20190914 1.82625 % 20190915 0.934601 % 20190916 0.705245 % 20190917 0.33577 % 20190918 0.290758 % 20190919 0.434292 % 20190920 0.706299 % 20190921 1.33371 % 20190922 3.05477 % 20190923 4.73191 % 20190924 4.76676 % 20190925 4.20988 % 20190926 2.465 % 20190927 2.51109 % 20190928 2.80903 % 20190929 2.05967 % 20190930 0.883246 % 20191001 0.651346 % 20191002 0.685943 % 20191003 0.704698 % 20191004 1.10795 % 20191005 1.3749 % 20191006 1.40322 % 20191007 0.952093 % 20191008 0.527741 % 20191009 0.514697 % 20191010 0.0680569 % 20191011 0.0289173 % 20191012 0.0102203 % 20191013 0.0204482 % 20191014 0 % 20191015 0.00509356 % 20191016 0.00509356 % 20191017 0.015369 % 20191018 0.0426457 % 20191019 0.0937061 % 20191020 0.229913 % 20191021 0.0119052 % 20191022 0 % 20191023 0 % 20191024 0.00168646 % 20191025 0.00168646 % 20191026 0.00168646 % 20191027 0 % 20191028 0.00681462 % 20191029 0.00339361 % 20191030 0 % 20191031 0 % 20191101 0 % 20191102 0 % 20191103 0 % 20191104 0 % 20191105 0 % 20191106 0 % 20191107 0 % 20191108 0 % 20191109 0.00171498 % 20191110 0.00513808 % 20191111 0.0034231 % 20191112 0.00171276 % 20191113 0 % 20191114 0.0716782 % 20191115 0.00505785 % 20191116 0 % 20191117 0 % 20191118 0.00677726 % 20191119 0 % 20191120 0 % 20191121 0 % 20191122 0 % 20191123 0 % 20191124 0 % 20191125 0 % 20191126 0 % 20191127 0 % 20191128 0 % 20191129 0 % 20191130 0 % 20191201 0.112586 % 20191202 0.0646164 % 20191203 0.0102414 % 20191204 0.0118045 % 20191205 0 % 20191206 0.00506377 % 20191207 0.0219297 % 20191208 0.0134909 % 20191209 0.00168764 % 20191210 0.00168764 % 20191211 0 % 20191212 0 % 20191213 0.00506169 % 20191214 0 % 20191215 0.0017204 % 20191216 0 % 20191217 0.00171498 % 20191218 0 % 20191219 0 % 20191220 0 % 20191221 0 % 20191222 0 % 20191223 0 % 20191224 0 % 20191225 0 % 20191226 0 % 20191227 0 % 20191228 0 % 20191229 0 % 20191230 0 % 20191231 0 %