# # Data product developed by Dr. E. Thiemann from the # Laboratory for Atmospheric and Space Physics, Boulder, Colorado # in the frame of the PROBA2 guest investigator program. # # Please address your questions to E. Thiemann (thiemann@lasp.colorado.edu) and # to the LYRA Principal Investigator M. Dominique (marie.dominique@oma.be) # # PROBA2 data products are open to all. # Users should however refer to the following paper: http://arxiv.org/abs/1708.08833 # and acknowledge the instrument according to the rules described # at http://proba2.oma.be/data/termsOfUse in their papers and presentations # # Website reference http://proba2.oma.be/lyra/data/EarthAtmosphere/ # # Description: # Summed neutral N2 and O number density profiles, spanning altitudes between 150 and 400 km # retrieved from LYRA data acquired during occultations by the unit 3 (backup unit) zirconium # channel (bandpass: 1-2 nm + 6-20 nm). # # Radial distance is the distance from the center of Earth expressed in km to which the density corresponds. # Density O-N2 provides the summed number density of neutral O and N2 in units of radial distance and cm^-3. # The systematic error is a signed value (asymmetric) in fractional units and is primarily from the error made by # assuming that the absorption cross-sections of O and N2 are equal; a secondary source of systematic error is # from using a single-scale height atmosphere in the reference atmosphere used by the retrieval algorithm. # The random error is an unsigned value (to be applied symmetrically to the measurement) in fractional # units and gathers the uncertainties from solar spectra, solar variability and measurement noise. # Both uncertainties are described in http://arxiv.org/abs/1708.08833. # The Longitude and Latitude (in degrees) columns refer to the tangential point along the # line-of-sight, where most of the absorption occurs. # # Scale height = 39.104932 km # Date (UTC) = 2015-12-30T10:01:51.052 # Date (julian) = 2457386.91795200 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6490.5591 1.1500695e+11 0.024826156 0.029436338 -29.929841 49.785696 6492.5880 9.6073737e+10 0.031489632 0.030048146 -30.025388 49.700765 6494.6169 8.1909177e+10 0.037612768 0.030659955 -30.118670 49.615841 6496.6458 7.2634147e+10 0.043039339 0.031271763 -30.210666 49.530923 6498.6747 6.5171126e+10 0.047961452 0.031883572 -30.302662 49.446004 6500.7036 5.9823366e+10 0.052543843 0.032495380 -30.397529 49.358214 6502.7325 5.5653729e+10 0.057078362 0.033107188 -30.493063 49.269756 6504.7614 5.1635062e+10 0.061910028 0.033718997 -30.588600 49.181296 6506.7903 4.7611625e+10 0.067207570 0.034330805 -30.688056 49.085866 6508.8192 4.3615565e+10 0.073229105 0.034942614 -30.787573 48.990329 6510.8481 3.9630228e+10 0.080160112 0.035554422 -30.883536 48.899812 6512.8770 3.6362768e+10 0.088517515 0.036166230 -30.975544 48.814882 6514.9059 3.3608963e+10 0.098553302 0.036778039 -31.067553 48.729952 6516.9348 3.1282895e+10 0.11034221 0.037389847 -31.157262 48.642739 6518.9637 2.9146626e+10 0.12374376 0.038001656 -31.245720 48.554281 6520.9926 2.7002143e+10 0.13842043 0.038613464 -31.334178 48.465823 6523.0215 2.4963616e+10 0.15129434 0.039184434 -31.422635 48.380271 6525.0504 2.3070328e+10 0.16241952 0.039776467 -31.511093 48.295351 6527.0793 2.1323933e+10 0.17057312 0.040774016 -31.599550 48.210428 6529.1082 1.9714645e+10 0.17527073 0.042408074 -31.688008 48.121991 6531.1371 1.8166287e+10 0.17788330 0.045428167 -31.776466 48.033534 6533.1660 1.6720596e+10 0.17954819 0.047590112 -31.864329 47.945671 6535.1949 1.5413452e+10 0.17922495 0.048139771 -31.949259 47.860741 6537.2237 1.4199889e+10 0.17839119 0.048790713 -32.034189 47.775812 6539.2526 1.3121481e+10 0.17715727 0.049949447 -32.119116 47.689672 6541.2815 1.2090670e+10 0.17549865 0.051235227 -32.204036 47.601214 6543.3104 1.1145909e+10 0.17382519 0.051463369 -32.288956 47.512757 6545.3393 1.0323035e+10 0.17235004 0.052458607 -32.373875 47.426127 6547.3682 9.6003155e+09 0.17083076 0.053427396 -32.458794 47.341207 6549.3971 8.9722623e+09 0.16898674 0.054370984 -32.543712 47.256287 6551.4260 8.3435231e+09 0.16736841 0.055385292 -32.633213 47.161289 6553.4549 7.6961644e+09 0.16566764 0.055106385 -32.724768 47.061773 6555.4838 7.0616937e+09 0.16375961 0.054446843 -32.815140 46.964859 6557.5127 6.4913511e+09 0.16175161 0.053544737 -32.900060 46.879940 6559.5416 6.0075212e+09 0.15903321 0.052326049 -32.984980 46.795022 6561.5705 5.5895534e+09 0.15593683 0.051091548 -33.067411 46.708853 6563.5994 5.2189258e+09 0.15270205 0.049234995 -33.145263 46.620384 6565.6283 4.8846713e+09 0.14969933 0.047604954 -33.223116 46.531914 6567.6572 4.5766349e+09 0.14697652 0.046061510 -33.302826 46.443451 6569.6861 4.2986277e+09 0.14395507 0.044897079 -33.384208 46.354994 6571.7150 4.0409841e+09 0.14097982 0.044307997 -33.465590 46.266536 6573.7439 3.8057530e+09 0.13781391 0.043060530 -33.546971 46.180555 6575.7728 3.5939811e+09 0.13526913 0.041599363 -33.628352 46.095635 6577.8017 3.3884208e+09 0.13305402 0.038961126 -33.709733 46.010715 6579.8306 3.1950490e+09 0.13068456 0.036613892 -33.788021 45.922704 6581.8595 3.0154660e+09 0.12840756 0.035336348 -33.865863 45.834246 6583.8884 2.8437574e+09 0.12621328 0.034572013 -33.943705 45.745788 6585.9173 2.6951464e+09 0.12406430 0.033237439 -34.021559 45.657319 6587.9462 2.5558104e+09 0.12240415 0.033368003 -34.099412 45.568849 6589.9751 2.4128366e+09 0.12015776 0.031111545 -34.178539 45.478812 6592.0040 2.2641677e+09 0.11748195 0.028069683 -34.262132 45.383276 6594.0329 2.1053998e+09 0.11500811 0.026154489 -34.345726 45.287740 6596.0618 1.9549572e+09 0.11218560 0.025726993 -34.425238 45.197226 6598.0906 1.8266429e+09 0.11012875 0.025363887 -34.503082 45.108769 6600.1195 1.7150944e+09 0.10904538 0.025235636 -34.580925 45.020311 6602.1484 1.6163270e+09 0.10794170 0.027389960 -34.655642 44.934980 6604.1773 1.5278946e+09 0.10599511 0.026176574 -34.729946 44.850061 6606.2062 1.4471247e+09 0.10492104 0.027133367 -34.804250 44.764940 6608.2351 1.3703790e+09 0.10198298 0.023726155 -34.878564 44.676471 6610.2640 1.2949961e+09 0.098527665 0.024255251 -34.952878 44.588001 6612.2929 1.2243343e+09 0.095923534 0.024101890 -35.026371 44.499535 6614.3218 1.1597309e+09 0.094185216 0.023718770 -35.097137 44.411077 6616.3507 1.1034909e+09 0.092070403 0.023337344 -35.167904 44.322619 6618.3796 1.0491488e+09 0.091059967 0.024057450 -35.243867 44.231294 6620.4085 9.8676957e+08 0.090344410 0.024898840 -35.327461 44.135757 6622.4374 9.2227312e+08 0.089353984 0.024641569 -35.411054 44.040221 6624.4663 8.6441752e+08 0.088065166 0.025111920 -35.483193 43.951006 6626.4952 8.1351013e+08 0.086854756 0.025959971 -35.553959 43.862548 6628.5241 7.7219877e+08 0.085742223 0.025915884 -35.624726 43.774090 6630.5530 7.3309202e+08 0.084468104 0.025929664 -35.695492 43.685633 6632.5819 6.9496372e+08 0.083235925 0.026102119 -35.766258 43.597175 6634.6108 6.6795542e+08 0.081905928 0.026371396 -35.837027 43.509567 6636.6397 6.3735951e+08 0.080547750 0.026301337 -35.907802 43.424637 6638.6686 6.0943842e+08 0.079572402 0.025642514 -35.978578 43.339707 6640.6975 5.8455442e+08 0.079964855 0.025185314 -36.051368 43.248727 6642.7264 5.5187010e+08 0.079768050 0.025181421 -36.127000 43.149211 6644.7553 5.2183947e+08 0.078824587 0.025425235 -36.202633 43.049694 6646.7842 4.8853040e+08 0.077773788 0.026326058 -36.273873 42.960159 6648.8131 4.6194926e+08 0.076618905 0.027508553 -36.344639 42.871701 6650.8420 4.4060081e+08 0.076149629 0.026447986 -36.415135 42.783514 6652.8709 4.2404710e+08 0.075627569 0.027490129 -36.482362 42.698594 6654.8998 4.0691096e+08 0.074366984 0.027652922 -36.549590 42.613675 6656.9287 3.8776612e+08 0.072374860 0.028838489 -36.618920 42.525103 6658.9575 3.6613164e+08 0.070749167 0.031759310 -36.694553 42.425587 6660.9864 3.4078487e+08 0.069439893 0.032522629 -36.770186 42.326071 6663.0153 3.2264594e+08 0.068269304 0.032478961 -36.839623 42.234707 6665.0442 3.0455403e+08 0.067698902 0.028474644 -36.906859 42.146237 6667.0731 2.9069603e+08 0.067345635 0.027130321 -36.974096 42.057767 6669.1020 2.7681714e+08 0.066254213 0.028250909 -37.038097 41.972537 6671.1309 2.6271797e+08 0.066401566 0.026867214 -37.101786 41.887619 6673.1598 2.5033510e+08 0.065987987 0.027698247 -37.166503 41.801445 6675.1887 2.3740659e+08 0.064356936 0.030159828 -37.242134 41.701929 6677.2176 2.2038482e+08 0.062432385 0.032048851 -37.317766 41.602412 6679.2465 2.0571072e+08 0.061905102 0.030064062 -37.386545 41.509242 6681.2754 1.9274427e+08 0.062707056 0.029868650 -37.450235 41.420784 6683.3043 1.7754833e+08 0.062996566 0.031634549 -37.513924 41.332327 6685.3332 1.6742898e+08 0.062515967 0.033056784 -37.583567 41.238577 6687.3621 1.5481094e+08 0.060415679 0.034140952 -37.655219 41.143040 6689.3910 1.4337211e+08 0.057760278 0.033664063 -37.724999 41.049167 6691.4199 1.3570775e+08 0.056615549 0.032902195 -37.788697 40.960698 6693.4488 1.2519011e+08 0.055476597 0.031450125 -37.852395 40.872229 6695.4777 1.1763921e+08 0.054873322 0.029771728 -37.917720 40.779234 6697.5066 1.1205107e+08 0.054024482 0.030155375 -37.985392 40.679718 6699.5355 1.0607287e+08 0.052441946 0.031096335 -38.053064 40.580201 6701.5644 1.0484849e+08 0.050733009 0.032237550 -38.117162 40.493786 6703.5933 1.0428078e+08 0.050854234 0.035159799 -38.180851 40.408868 6705.6222 98826809. 0.050781560 0.037774702 -38.244825 40.322909 6707.6511 96458971. 0.050500832 0.040093561 -38.312495 40.223392 6709.6800 89435537. 0.049449371 0.040700052 -38.380166 40.123875 6711.7089 84921761. 0.047571355 0.041498723 -38.443633 40.030542 6713.7378 85620623. 0.045967175 0.046354939 -38.503785 39.942085 6715.7667 83207089. 0.044480070 0.048162702 -38.563937 39.853627 6717.7956 78988023. 0.042541992 0.049825060 -38.629606 39.759971 6719.8244 76117170. 0.041252333 0.050586553 -38.697287 39.664420 6721.8533 71268687. 0.041163710 0.050561016 -38.764965 39.567993 6723.8822 69081014. 0.039172399 0.049860985 -38.832635 39.468476 6725.9111 68132267. 0.035096278 0.041006875 -38.900306 39.368960 6727.9400 61852312. 0.033070551 0.039707989 -38.962646 39.277284 6729.9689 57692609. 0.029991262 0.040399609 -39.022797 39.188827 6731.9978 56132466. 0.025563397 0.043735889 -39.082949 39.100369 6734.0267 52949974. 0.017297614 0.049351992 -39.146225 39.005662 6736.0556 53078144. -0.020133058 0.050565290 -39.209916 38.910125 6738.0845 53531638. 0.014655740 0.057786407 -39.275082 38.813113 6740.1134 52266580. 0.083581766 0.064244113 -39.342752 38.713597