# # 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 = 42.060558 km # Date (UTC) = 2015-11-26T09:34:24.544 # Date (julian) = 2457352.89889519 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6495.6895 6.8367762e+10 0.035028150 0.030983395 -17.031625 59.430349 6497.5354 6.3503735e+10 0.040108595 0.031540008 -17.180108 59.350674 6499.3812 5.9541604e+10 0.045208530 0.032096620 -17.325454 59.267864 6501.2271 5.5907516e+10 0.050449063 0.032653233 -17.470315 59.184569 6503.0729 5.2284195e+10 0.055903982 0.033209846 -17.614797 59.101654 6504.9188 4.8792739e+10 0.061673717 0.033766459 -17.756037 59.021979 6506.7646 4.5633110e+10 0.067902373 0.034323071 -17.897277 58.942305 6508.6105 4.2582258e+10 0.074673244 0.034879684 -18.038517 58.862631 6510.4564 3.9758709e+10 0.082133609 0.035436297 -18.179756 58.782957 6512.3022 3.7038635e+10 0.090295948 0.035992910 -18.320995 58.703283 6514.1481 3.4473650e+10 0.099216683 0.036549523 -18.460127 58.621500 6515.9939 3.2155438e+10 0.10897125 0.037106135 -18.597746 58.538205 6517.8398 2.9949275e+10 0.11948728 0.037662748 -18.735365 58.454909 6519.6856 2.7972084e+10 0.13083414 0.038219361 -18.872983 58.374588 6521.5315 2.6021147e+10 0.14277474 0.038775974 -19.010601 58.294916 6523.3773 2.4092033e+10 0.15126904 0.039272637 -19.148002 58.215026 6525.2232 2.2266832e+10 0.15914663 0.039756741 -19.282000 58.131731 6527.0691 2.0528903e+10 0.16604720 0.040766607 -19.415997 58.048436 6528.9149 1.8960767e+10 0.17063104 0.042168286 -19.549994 57.965140 6530.7608 1.7467598e+10 0.17449332 0.044893760 -19.683990 57.881844 6532.6066 1.6129718e+10 0.17750033 0.047190963 -19.817986 57.798547 6534.4525 1.4913046e+10 0.17744243 0.048071134 -19.950048 57.717191 6536.2983 1.3803865e+10 0.17597182 0.048057430 -20.080443 57.637507 6538.1442 1.2793523e+10 0.17607224 0.049226894 -20.210838 57.557822 6539.9900 1.1846180e+10 0.17582161 0.050842053 -20.341218 57.475334 6541.8359 1.1006033e+10 0.17365475 0.051055453 -20.471593 57.392039 6543.6818 1.0233948e+10 0.17202962 0.051560823 -20.601914 57.308744 6545.5276 9.5314897e+09 0.17082107 0.052460294 -20.728668 57.225449 6547.3735 8.8827783e+09 0.16987703 0.053429387 -20.855422 57.142154 6549.2193 8.2882589e+09 0.16830001 0.054189788 -20.981256 57.058858 6551.0652 7.7512623e+09 0.16705108 0.055258630 -21.104389 56.975561 6552.9110 7.2523035e+09 0.16634619 0.055357460 -21.227521 56.892265 6554.7569 6.8132551e+09 0.16491543 0.054848263 -21.350653 56.807185 6556.6027 6.3960147e+09 0.16300584 0.053924511 -21.473784 56.720269 6558.4486 6.0070012e+09 0.16105497 0.052857042 -21.596916 56.633353 6560.2945 5.6567736e+09 0.15892304 0.052008820 -21.710041 56.555855 6562.1403 5.3622767e+09 0.15640032 0.050746392 -21.819490 56.481816 6563.9862 5.1337156e+09 0.15316592 0.048787600 -21.928940 56.407777 6565.8320 4.9045250e+09 0.15060721 0.047373626 -22.044676 56.327954 6567.6779 4.6524928e+09 0.14838169 0.046044025 -22.164186 56.244659 6569.5237 4.3866466e+09 0.14588180 0.044886511 -22.283697 56.161364 6571.3696 4.1326668e+09 0.14366866 0.044402334 -22.400095 56.078057 6573.2154 3.9074267e+09 0.14158976 0.043484594 -22.516002 55.994748 6575.0613 3.6971354e+09 0.13979628 0.042313206 -22.631907 55.911069 6576.9072 3.5058321e+09 0.13768081 0.040327241 -22.747796 55.824152 6578.7530 3.3348171e+09 0.13518974 0.037460526 -22.863686 55.737236 6580.5989 3.1768717e+09 0.13317838 0.035967316 -22.979575 55.651556 6582.4447 3.0301528e+09 0.13134633 0.035172774 -23.095463 55.568261 6584.2906 2.8823517e+09 0.12928649 0.034357224 -23.211352 55.484966 6586.1364 2.7391949e+09 0.12725051 0.033169533 -23.325140 55.399570 6587.9823 2.6054771e+09 0.12576943 0.033376006 -23.437408 55.312652 6589.8281 2.4752219e+09 0.12365627 0.031403021 -23.549675 55.225734 6591.6740 2.3495816e+09 0.12107850 0.028441384 -23.661943 55.141783 6593.5199 2.2363538e+09 0.11871602 0.026618916 -23.774210 55.058488 6595.3657 2.1267971e+09 0.11608258 0.025661496 -23.886268 54.974984 6597.2116 2.0282389e+09 0.11346646 0.025655966 -23.994915 54.888068 6599.0574 1.9345526e+09 0.11121595 0.024933184 -24.103561 54.801152 6600.9033 1.8334722e+09 0.11068856 0.026846838 -24.212208 54.715309 6602.7491 1.7441284e+09 0.10921938 0.026877357 -24.320853 54.632012 6604.5950 1.6578676e+09 0.10757548 0.026424558 -24.429499 54.548716 6606.4408 1.5781282e+09 0.10614799 0.026711789 -24.538145 54.463482 6608.2867 1.5049001e+09 0.10313470 0.023724791 -24.646792 54.376566 6610.1326 1.4306788e+09 0.099968229 0.024129627 -24.755438 54.289650 6611.9784 1.3648813e+09 0.097482316 0.024334522 -24.861281 54.202733 6613.8243 1.3006327e+09 0.096547366 0.023876013 -24.966306 54.115816 6615.6701 1.2331068e+09 0.095454037 0.023272149 -25.071279 54.028898 6617.5160 1.1728262e+09 0.094833509 0.023610318 -25.172702 53.941969 6619.3618 1.1159106e+09 0.094313982 0.024613217 -25.274120 53.855040 6621.2077 1.0635047e+09 0.093598585 0.025020609 -25.376447 53.769026 6623.0535 1.0137511e+09 0.092386340 0.024511661 -25.481471 53.685731 6624.8994 9.6204140e+08 0.091227689 0.025343750 -25.586495 53.602436 6626.7452 9.0900211e+08 0.089616225 0.025641388 -25.689743 53.517364 6628.5911 8.6580503e+08 0.088600031 0.025943089 -25.791146 53.430446 6630.4370 8.2545715e+08 0.087292769 0.025929379 -25.892550 53.343529 6632.2828 7.8765928e+08 0.085889511 0.026066257 -25.991311 53.256613 6634.1287 7.5284045e+08 0.084521930 0.026336228 -26.089093 53.169697 6635.9745 7.1432680e+08 0.083210753 0.026545932 -26.186874 53.082781 6637.8204 6.7968010e+08 0.082301890 0.025759614 -26.284656 52.995863 6639.6662 6.4573940e+08 0.081873912 0.025389947 -26.382437 52.908945 6641.5121 6.1430883e+08 0.082097638 0.025150039 -26.477972 52.824024 6643.3579 5.8578564e+08 0.081410502 0.025246664 -26.564887 52.746766 6645.2038 5.6547938e+08 0.080403421 0.025547158 -26.651802 52.669507 6647.0497 5.5036084e+08 0.079123557 0.026463925 -26.739445 52.591280 6648.8955 5.3113860e+08 0.077848467 0.027563743 -26.833604 52.504364 6650.7414 5.1145502e+08 0.077414018 0.026424957 -26.927764 52.417448 6652.5872 4.8761830e+08 0.077059743 0.027412090 -27.021929 52.330527 6654.4331 4.6454589e+08 0.076369111 0.027851730 -27.116103 52.243597 6656.2789 4.4351262e+08 0.075004172 0.028268237 -27.210277 52.156667 6658.1248 4.2492480e+08 0.074057520 0.030282396 -27.304443 52.069745 6659.9706 4.0829832e+08 0.073077825 0.031632121 -27.398603 51.982829 6661.8165 3.9157829e+08 0.071966436 0.032950811 -27.492762 51.895913 6663.6624 3.7480828e+08 0.071053552 0.032299658 -27.597914 51.798850 6665.5082 3.5417728e+08 0.071222773 0.027714409 -27.705528 51.699513 6667.3541 3.3623128e+08 0.070970522 0.027233512 -27.806297 51.605155 6669.1999 3.1905681e+08 0.070149559 0.028150369 -27.896835 51.518239 6671.0458 3.0089999e+08 0.070468214 0.026866001 -27.987373 51.431323 6672.8916 2.8925691e+08 0.070262619 0.027396406 -28.075595 51.344407 6674.7375 2.7699763e+08 0.069129259 0.029576911 -28.162512 51.257489 6676.5833 2.6759683e+08 0.067179090 0.032089685 -28.249428 51.170572 6678.4292 2.5676678e+08 0.066563816 0.030649547 -28.339526 51.080474 6680.2751 2.4432459e+08 0.067084332 0.029500812 -28.430064 50.989936 6682.1209 2.3274311e+08 0.067693856 0.030516922 -28.520178 50.899822 6683.9668 2.2313171e+08 0.067803938 0.032605385 -28.607095 50.812904 6685.8126 2.1532131e+08 0.067293054 0.033563165 -28.694012 50.725987 6687.6585 2.0891983e+08 0.065168945 0.033975662 -28.780929 50.639070 6689.5043 1.9933807e+08 0.062963519 0.033562046 -28.867846 50.552153 6691.3502 1.9081160e+08 0.061978313 0.032918642 -28.954763 50.465237 6693.1960 1.8045971e+08 0.061172374 0.031536834 -29.039526 50.378320 6695.0419 1.6922714e+08 0.060667461 0.029851778 -29.122821 50.291403 6696.8878 1.6460022e+08 0.060068149 0.030044629 -29.206116 50.204485 6698.7336 1.5706133e+08 0.058928601 0.031224778 -29.289412 50.114551 6700.5795 1.5276425e+08 0.057286919 0.031097522 -29.372708 50.024012 6702.4253 1.4508865e+08 0.056228701 0.033216349 -29.456003 49.933735 6704.2712 1.3660364e+08 0.056264075 0.036310714 -29.539298 49.846819 6706.1170 1.3386614e+08 0.055973677 0.038650084 -29.622593 49.759903 6707.9629 1.2850711e+08 0.055452796 0.040048894 -29.709588 49.669127 6709.8087 1.2651511e+08 0.054240138 0.040618145 -29.804785 49.569790 6711.6546 1.2168964e+08 0.052193976 0.041436983 -29.899982 49.470453 6713.5005 1.1450984e+08 0.050115280 0.045496646 -29.981299 49.382218 6715.3463 1.0961297e+08 0.048245703 0.047732780 -30.060985 49.295289 6717.1922 1.0227431e+08 0.046071878 0.049862382 -30.140669 49.207877 6719.0380 99072535. 0.043739588 0.051333720 -30.220343 49.117339 6720.8839 93800923. 0.043838614 0.050317354 -30.300017 49.026800 6722.7297 92171884. 0.042903817 0.049703071 -30.379691 48.937612 6724.5756 84238464. 0.039261551 0.045120175 -30.459364 48.850694 6726.4214 82525611. 0.036617605 0.040955168 -30.539037 48.763777 6728.2673 80724092. 0.035894078 0.040006942 -30.618711 48.676860 6730.1131 77108030. 0.034115030 0.040534043 -30.698385 48.589944 6731.9590 78571590. 0.032453163 0.043658620 -30.778060 48.503028 6733.8049 71177079. 0.030243211 0.048294125 -30.863893 48.402035 6735.6507 66199910. 0.029696912 0.049984214 -30.950811 48.298560 6737.4966 66414528. 0.028948981 0.055717402 -31.033013 48.202272 6739.3424 61754397. 0.022944049 0.063245616 -31.109065 48.115355 6741.1883 60414225. -0.013047941 0.066295679 -31.185117 48.028438 6743.0341 57773100. 0.013195299 0.071277724 -31.261169 47.939084 6744.8800 53709650. 0.077197721 0.078474063 -31.337221 47.848546