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(%) 20220101 0.000 % 20220102 0.000 % 20220103 0.000 % 20220104 0.002 % 20220105 0.002 % 20220106 0.000 % 20220107 0.008 % 20220108 0.007 % 20220109 0.000 % 20220110 0.000 % 20220111 0.000 % 20220112 0.000 % 20220113 0.000 % 20220114 0.000 % 20220115 0.000 % 20220116 0.000 % 20220117 0.000 % 20220118 0.002 % 20220119 0.003 % 20220120 0.010 % 20220121 0.007 % 20220122 0.000 % 20220123 0.000 % 20220124 0.000 % 20220125 0.000 % 20220126 0.000 % 20220127 0.000 % 20220128 0.000 % 20220129 0.000 % 20220130 0.000 % 20220131 0.000 % 20220201 0.000 % 20220202 0.000 % 20220203 0.000 % 20220204 0.000 % 20220205 0.000 % 20220206 0.000 % 20220207 0.000 % 20220208 0.000 % 20220209 0.002 % 20220210 0.002 % 20220211 0.000 % 20220212 0.000 % 20220213 0.000 % 20220214 0.000 % 20220215 0.000 % 20220216 0.000 % 20220217 0.000 % 20220218 0.000 % 20220219 0.000 % 20220220 0.000 % 20220221 0.000 % 20220222 0.000 % 20220223 0.000 % 20220224 0.000 % 20220225 0.000 % 20220226 0.000 % 20220227 0.000 % 20220228 0.000 % 20220301 0.000 % 20220302 0.000 % 20220303 0.000 % 20220304 0.000 % 20220305 0.002 % 20220306 0.000 % 20220307 0.000 % 20220308 0.000 % 20220309 0.000 % 20220310 0.003 % 20220311 0.002 % 20220312 0.007 % 20220313 0.000 % 20220314 0.003 % 20220315 0.020 % 20220316 0.000 % 20220317 0.000 % 20220318 0.000 % 20220319 0.000 % 20220320 0.000 % 20220321 0.000 % 20220322 0.000 % 20220323 0.000 % 20220324 0.000 % 20220325 0.000 % 20220326 0.000 % 20220327 0.000 % 20220328 0.005 % 20220329 0.007 % 20220330 0.031 % 20220331 0.229 % 20220401 0.277 % 20220402 0.611 % 20220403 0.391 % 20220404 0.263 % 20220405 0.162 % 20220406 0.065 % 20220407 0.022 % 20220408 0.005 % 20220409 0.003 % 20220410 0.002 % 20220411 0.002 % 20220412 0.003 % 20220413 0.017 % 20220414 0.053 % 20220415 0.410 % 20220416 0.985 % 20220417 1.338 % 20220418 1.167 % 20220419 0.671 % 20220420 0.760 % 20220421 0.654 % 20220422 0.818 % 20220423 1.326 % 20220424 1.389 % 20220425 1.365 % 20220426 1.257 % 20220427 1.189 % 20220428 1.429 % 20220429 1.582 % 20220430 1.745 % 20220501 1.327 % 20220502 1.208 % 20220503 0.728 % 20220504 0.297 % 20220505 0.179 % 20220506 0.298 % 20220507 0.607 % 20220508 1.015 % 20220509 1.211 % 20220510 1.263 % 20220511 1.258 % 20220512 1.129 % 20220513 1.049 % 20220514 0.915 % 20220515 0.946 % 20220516 1.975 % 20220517 3.621 % 20220518 3.784 % 20220519 3.932 % 20220520 3.981 % 20220521 4.024 % 20220522 4.249 % 20220523 4.353 % 20220524 4.346 % 20220525 4.192 % 20220526 4.442 % 20220527 4.623 % 20220528 5.347 % 20220529 8.616 % 20220530 11.804 % 20220531 11.987 % 20220601 12.100 % 20220602 11.775 % 20220603 11.534 % 20220604 11.599 % 20220605 10.847 % 20220606 8.751 % 20220607 9.333 % 20220608 9.890 % 20220609 10.417 % 20220610 10.625 % 20220611 10.711 % 20220612 9.992 % 20220613 10.075 % 20220614 10.033 % 20220615 10.604 % 20220616 11.086 % 20220617 12.143 % 20220618 22.077 % 20220619 24.382 % 20220620 24.763 % 20220621 25.032 % 20220622 22.798 % 20220623 22.446 % 20220624 22.661 % 20220625 23.709 % 20220626 25.195 % 20220627 25.218 % 20220628 25.486 % 20220629 27.906 % 20220630 28.932 % 20220701 30.292 % 20220702 29.062 % 20220703 28.760 % 20220704 30.909 % 20220705 32.718 % 20220706 33.266 % 20220707 33.823 % 20220708 31.279 % 20220709 34.405 % 20220710 35.189 % 20220711 32.460 % 20220712 32.553 % 20220713 32.909 % 20220714 31.470 % 20220715 34.370 % 20220716 41.499 % 20220717 42.909 % 20220718 45.033 % 20220719 46.223 % 20220720 47.894 % 20220721 49.619 % 20220722 52.631 % 20220723 53.085 % 20220724 52.497 % 20220725 52.092 % 20220726 51.535 % 20220727 47.560 % 20220728 40.322 % 20220729 39.739 % 20220730 40.792 % 20220731 41.847 % 20220801 40.960 % 20220802 39.375 % 20220803 36.752 % 20220804 36.312 % 20220805 35.656 % 20220806 34.768 % 20220807 32.260 % 20220808 26.363 % 20220809 24.219 % 20220810 23.313 % 20220811 21.553 % 20220812 20.238 % 20220813 20.312 % 20220814 22.077 % 20220815 23.259 % 20220816 22.895 % 20220817 21.851 % 20220818 17.281 % 20220819 15.288 % 20220820 14.180 % 20220821 12.183 % 20220822 10.860 % 20220823 11.474 % 20220824 12.572 % 20220825 14.053 % 20220826 13.553 % 20220827 10.921 % 20220828 9.060 % 20220829 10.517 % 20220830 12.071 % 20220831 10.645 % 20220901 10.677 % 20220902 21.472 % 20220903 34.726 % 20220904 37.846 % 20220905 37.272 % 20220906 27.926 % 20220907 12.917 % 20220908 8.915 % 20220909 10.927 % 20220910 12.638 % 20220911 12.171 % 20220912 12.324 % 20220913 8.376 % 20220914 8.387 % 20220915 9.468 % 20220916 10.804 % 20220917 9.997 % 20220918 10.122 % 20220919 9.236 % 20220920 8.879 % 20220921 2.964 % 20220922 4.028 % 20220923 7.698 % 20220924 8.793 % 20220925 6.098 % 20220926 12.761 % 20220927 6.521 % 20220928 2.520 % 20220929 0.889 % 20220930 0.178 % 20221001 0.480 % 20221002 0.487 % 20221003 0.190 % 20221004 0.055 % 20221005 0.096 % 20221006 0.027 % 20221007 0.005 % 20221008 0.000 % 20221009 0.000 % 20221010 0.020 % 20221011 0.000 % 20221012 0.000 % 20221013 0.000 % 20221014 0.000 % 20221015 0.000 % 20221016 0.000 % 20221017 0.235 % 20221018 0.467 % 20221019 0.296 % 20221020 0.007 % 20221021 0.154 % 20221022 0.186 % 20221023 0.021 % 20221024 0.010 % 20221025 0.000 % 20221026 0.000 % 20221027 0.021 % 20221028 1.474 % 20221029 0.103 % 20221030 0.010 % 20221031 0.000 % 20221101 0.000 % 20221102 0.000 % 20221103 0.000 % 20221104 0.000 % 20221105 0.000 % 20221106 0.000 % 20221107 0.000 % 20221108 0.000 % 20221109 0.000 % 20221110 0.000 % 20221111 0.000 % 20221112 0.000 % 20221113 0.000 % 20221114 0.072 % 20221115 0.010 % 20221116 0.065 % 20221117 0.015 % 20221118 0.010 % 20221119 0.003 % 20221120 0.048 % 20221121 0.024 % 20221122 0.009 % 20221123 0.000 % 20221124 0.000 % 20221125 0.000 % 20221126 0.002 % 20221127 0.000 % 20221128 0.000 % 20221129 0.000 % 20221130 0.048 % 20221201 0.100 % 20221202 0.002 % 20221203 0.003 % 20221204 0.002 % 20221205 0.000 % 20221206 0.010 % 20221207 0.000 % 20221208 0.000 % 20221209 0.000 % 20221210 0.000 % 20221211 0.000 % 20221212 0.002 % 20221213 0.000 % 20221214 0.000 % 20221215 0.000 % 20221216 0.000 % 20221217 0.000 % 20221218 0.000 % 20221219 0.000 % 20221220 0.000 % 20221221 0.000 % 20221222 0.002 % 20221223 0.002 % 20221224 0.000 % 20221225 0.000 % 20221226 0.000 % 20221227 0.000 % 20221228 0.000 % 20221229 0.000 % 20221230 0.000 % 20221231 0.000 %