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(%) 20230101 0.000 % 20230102 0.000 % 20230103 0.000 % 20230104 0.000 % 20230105 0.000 % 20230106 0.000 % 20230107 0.000 % 20230108 0.000 % 20230109 0.000 % 20230110 0.000 % 20230111 0.000 % 20230112 0.000 % 20230113 0.000 % 20230114 0.000 % 20230115 0.000 % 20230116 0.000 % 20230117 0.000 % 20230118 0.000 % 20230119 0.000 % 20230120 0.000 % 20230121 0.000 % 20230122 0.000 % 20230123 0.000 % 20230124 0.000 % 20230125 0.005 % 20230126 0.002 % 20230127 0.000 % 20230128 0.000 % 20230129 0.000 % 20230130 0.000 % 20230131 0.000 % 20230201 0.000 % 20230202 0.000 % 20230203 0.000 % 20230204 0.002 % 20230205 0.029 % 20230206 0.030 % 20230207 0.000 % 20230208 0.000 % 20230209 0.000 % 20230210 0.000 % 20230211 0.000 % 20230212 0.008 % 20230213 0.014 % 20230214 0.005 % 20230215 0.000 % 20230216 0.000 % 20230217 0.000 % 20230218 0.000 % 20230219 0.000 % 20230220 0.000 % 20230221 0.000 % 20230222 0.000 % 20230223 0.000 % 20230224 0.012 % 20230225 0.009 % 20230226 0.005 % 20230227 0.181 % 20230228 0.136 % 20230301 0.014 % 20230302 0.017 % 20230303 0.135 % 20230304 0.305 % 20230305 0.337 % 20230306 0.073 % 20230307 0.007 % 20230308 0.003 % 20230309 0.002 % 20230310 0.000 % 20230311 0.000 % 20230312 0.000 % 20230313 0.000 % 20230314 0.000 % 20230315 0.000 % 20230316 0.000 % 20230317 0.000 % 20230318 0.000 % 20230319 0.002 % 20230320 0.002 % 20230321 0.002 % 20230322 0.002 % 20230323 0.000 % 20230324 0.002 % 20230325 0.002 % 20230326 0.000 % 20230327 0.002 % 20230328 0.000 % 20230329 0.000 % 20230330 0.000 % 20230331 0.000 % 20230401 0.000 % 20230402 0.000 % 20230403 0.000 % 20230404 0.002 % 20230405 0.003 % 20230406 0.005 % 20230407 0.003 % 20230408 0.021 % 20230409 0.170 % 20230410 0.401 % 20230411 0.667 % 20230412 0.753 % 20230413 0.725 % 20230414 0.588 % 20230415 0.524 % 20230416 0.465 % 20230417 0.560 % 20230418 0.873 % 20230419 1.274 % 20230420 0.987 % 20230421 0.744 % 20230422 0.632 % 20230423 0.595 % 20230424 0.679 % 20230425 0.451 % 20230426 0.376 % 20230427 0.392 % 20230428 0.294 % 20230429 0.159 % 20230430 0.156 % 20230501 0.140 % 20230502 0.161 % 20230503 0.135 % 20230504 0.142 % 20230505 0.142 % 20230506 0.129 % 20230507 0.178 % 20230508 0.784 % 20230509 1.438 % 20230510 1.412 % 20230511 1.651 % 20230512 1.840 % 20230513 1.795 % 20230514 1.762 % 20230515 1.673 % 20230516 1.759 % 20230517 1.891 % 20230518 1.997 % 20230519 2.042 % 20230520 2.162 % 20230521 2.123 % 20230522 2.169 % 20230523 2.124 % 20230524 2.133 % 20230525 2.112 % 20230526 2.126 % 20230527 2.170 % 20230528 2.536 % 20230529 2.920 % 20230530 3.308 % 20230531 10.276 % 20230601 12.660 % 20230602 12.957 % 20230603 12.176 % 20230604 11.832 % 20230605 11.986 % 20230606 11.974 % 20230607 11.742 % 20230608 10.538 % 20230609 9.714 % 20230610 11.394 % 20230611 12.475 % 20230612 14.279 % 20230613 15.295 % 20230614 17.942 % 20230615 20.329 % 20230616 20.878 % 20230617 16.037 % 20230618 14.228 % 20230619 13.955 % 20230620 16.682 % 20230621 21.118 % 20230622 23.601 % 20230623 27.238 % 20230624 29.503 % 20230625 32.116 % 20230626 40.303 % 20230627 51.409 % 20230628 57.797 % 20230629 58.554 % 20230630 57.252 % 20230701 56.852 % 20230702 56.675 % 20230703 57.768 % 20230704 58.630 % 20230705 58.647 % 20230706 63.894 % 20230707 65.785 % 20230708 66.936 % 20230709 64.741 % 20230710 65.718 % 20230711 66.239 % 20230712 64.360 % 20230713 61.113 % 20230714 59.970 % 20230715 58.683 % 20230716 56.527 % 20230717 58.164 % 20230718 60.014 % 20230719 60.656 % 20230720 59.427 % 20230721 59.283 % 20230722 59.533 % 20230723 59.145 % 20230724 52.581 % 20230725 47.424 % 20230726 44.510 % 20230727 42.690 % 20230728 40.925 % 20230729 41.510 % 20230730 38.096 % 20230731 35.546 % 20230801 32.856 % 20230802 33.311 % 20230803 32.087 % 20230804 29.130 % 20230805 29.307 % 20230806 28.211 % 20230807 28.783 % 20230808 29.173 % 20230809 29.204 % 20230810 30.071 % 20230811 28.450 % 20230812 29.210 % 20230813 29.376 % 20230814 31.196 % 20230815 27.186 % 20230816 23.174 % 20230817 24.229 % 20230818 23.827 % 20230819 21.231 % 20230820 28.705 % 20230821 38.638 % 20230822 49.255 % 20230823 50.079 % 20230824 43.144 % 20230825 32.361 % 20230826 19.389 % 20230827 15.471 % 20230828 15.071 % 20230829 14.465 % 20230830 14.077 % 20230831 11.374 % 20230901 10.288 % 20230902 7.179 % 20230903 6.664 % 20230904 8.660 % 20230905 10.078 % 20230906 9.542 % 20230907 7.551 % 20230908 5.178 % 20230909 2.434 % 20230910 2.128 % 20230911 2.351 % 20230912 1.919 % 20230913 1.648 % 20230914 2.162 % 20230915 2.398 % 20230916 1.711 % 20230917 0.628 % 20230918 0.588 % 20230919 0.865 % 20230920 0.749 % 20230921 0.389 % 20230922 0.297 % 20230923 0.073 % 20230924 0.022 % 20230925 0.070 % 20230926 0.065 % 20230927 0.024 % 20230928 0.039 % 20230929 0.060 % 20230930 0.036 % 20231001 0.002 % 20231002 0.026 % 20231003 0.041 % 20231004 0.000 % 20231005 0.000 % 20231006 0.000 % 20231007 0.769 % 20231008 3.589 % 20231009 0.865 % 20231010 0.245 % 20231011 0.618 % 20231012 0.012 % 20231013 0.019 % 20231014 0.088 % 20231015 0.058 % 20231016 0.000 % 20231017 0.007 % 20231018 0.202 % 20231019 0.348 % 20231020 0.227 % 20231021 0.041 % 20231022 0.000 % 20231023 0.000 % 20231024 0.000 % 20231025 0.000 % 20231026 0.000 % 20231027 0.000 % 20231028 0.034 % 20231029 0.099 % 20231030 0.150 % 20231031 0.310 % 20231101 0.228 % 20231102 0.029 % 20231103 0.000 % 20231104 0.000 % 20231105 0.000 % 20231106 0.000 % 20231107 0.000 % 20231108 0.002 % 20231109 0.000 % 20231110 0.000 % 20231111 0.000 % 20231112 0.000 % 20231113 0.043 % 20231114 0.000 % 20231115 0.000 % 20231116 0.000 % 20231117 0.000 % 20231118 0.000 % 20231119 0.000 % 20231120 0.014 % 20231121 0.000 % 20231122 0.003 % 20231123 0.003 % 20231124 0.027 % 20231125 0.222 % 20231126 0.211 % 20231127 0.048 % 20231128 0.002 % 20231129 0.000 % 20231130 0.002 % 20231201 0.000 % 20231202 0.000 % 20231203 0.000 % 20231204 0.003 % 20231205 0.000 % 20231206 0.017 % 20231207 0.005 % 20231208 0.002 % 20231209 0.000 % 20231210 0.000 % 20231211 0.000 % 20231212 0.000 % 20231213 0.000 % 20231214 0.000 % 20231215 0.000 % 20231216 0.012 % 20231217 0.000 % 20231218 0.000 % 20231219 0.036 % 20231220 0.085 % 20231221 0.000 % 20231222 0.000 % 20231223 0.000 % 20231224 0.000 % 20231225 0.000 % 20231226 0.000 % 20231227 0.000 % 20231228 0.000 % 20231229 0.000 % 20231230 0.000 %