# # 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 = 44.888923 km # Date (UTC) = 2015-11-27T10:21:39.238 # Date (julian) = 2457353.93170414 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.7176 7.6082360e+10 0.030477021 0.030690314 -29.342925 58.887325 6496.8267 7.2285240e+10 0.036414048 0.031326314 -29.504936 58.796286 6498.9358 6.7364603e+10 0.042411794 0.031962314 -29.670483 58.705235 6501.0450 6.2490134e+10 0.048553516 0.032598313 -29.836029 58.614184 6503.1541 5.7961699e+10 0.054990553 0.033234313 -29.995480 58.520104 6505.2632 5.3978446e+10 0.061924970 0.033870312 -30.152727 58.424929 6507.3723 5.0325127e+10 0.069484722 0.034506312 -30.309974 58.331068 6509.4814 4.6789389e+10 0.077701265 0.035142311 -30.467219 58.240031 6511.5906 4.3226915e+10 0.086624791 0.035778311 -30.624465 58.148993 6513.6997 3.9819442e+10 0.096350549 0.036414310 -30.781711 58.054227 6515.8088 3.6777499e+10 0.10705549 0.037050310 -30.938957 57.959052 6517.9179 3.3901168e+10 0.11864628 0.037686309 -31.094198 57.865882 6520.0270 3.1114235e+10 0.13098423 0.038322309 -31.247306 57.774844 6522.1362 2.8615740e+10 0.14381095 0.038952905 -31.399006 57.684244 6524.2453 2.6531315e+10 0.15193988 0.039514095 -31.531422 57.599646 6526.3544 2.4837851e+10 0.15948042 0.040039629 -31.663838 57.515047 6528.4635 2.3348962e+10 0.16696572 0.041810191 -31.802036 57.426754 6530.5726 2.1729995e+10 0.17303298 0.044630376 -31.951007 57.331579 6532.6818 2.0037202e+10 0.17779244 0.047253727 -32.099977 57.236403 6534.7909 1.8361417e+10 0.17937379 0.048165796 -32.245087 57.141229 6536.9000 1.6759797e+10 0.17874460 0.048595750 -32.389918 57.046054 6539.0091 1.5347980e+10 0.17712009 0.049654662 -32.534761 56.950871 6541.1182 1.4060758e+10 0.17542165 0.051288186 -32.679616 56.855682 6543.2274 1.2907689e+10 0.17355583 0.051441564 -32.824055 56.760494 6545.3365 1.1876717e+10 0.17181192 0.052458581 -32.964749 56.665319 6547.4456 1.0915405e+10 0.17012321 0.053456816 -33.105443 56.570144 6549.5547 1.0066554e+10 0.16838634 0.054531579 -33.246137 56.474968 6551.6638 9.3030984e+09 0.16683677 0.055468767 -33.386831 56.379793 6553.7730 8.5976154e+09 0.16486860 0.054946513 -33.526421 56.284618 6555.8821 7.9261908e+09 0.16287491 0.054112211 -33.662976 56.189443 6557.9912 7.2973153e+09 0.16126427 0.053244824 -33.799531 56.094268 6560.1003 6.7563929e+09 0.15892979 0.052183862 -33.923187 56.008083 6562.2094 6.3213708e+09 0.15610183 0.050680618 -34.044569 55.923483 6564.3186 5.9447678e+09 0.15308319 0.048627228 -34.167400 55.836949 6566.4277 5.5810536e+09 0.15060695 0.046940950 -34.299818 55.737637 6568.5368 5.2007740e+09 0.14842437 0.045278220 -34.432235 55.638325 6570.6459 4.8215445e+09 0.14641918 0.044649949 -34.564653 55.541970 6572.7550 4.4786060e+09 0.14402488 0.043797767 -34.697070 55.446795 6574.8642 4.1684963e+09 0.14109550 0.042439954 -34.828259 55.350381 6576.9733 3.9027108e+09 0.13762221 0.040251134 -34.956558 55.251052 6579.0824 3.6730167e+09 0.13358392 0.037025202 -35.084856 55.151723 6581.1915 3.4579563e+09 0.13046247 0.035538616 -35.213138 55.056058 6583.3006 3.2552501e+09 0.12818557 0.034869499 -35.341418 54.960883 6585.4098 3.0533119e+09 0.12620748 0.033643184 -35.469698 54.863782 6587.5189 2.8546784e+09 0.12462927 0.033273332 -35.597979 54.764467 6589.6280 2.6782830e+09 0.12277361 0.031800094 -35.726057 54.665355 6591.7371 2.5146811e+09 0.12044189 0.028370163 -35.850199 54.570180 6593.8462 2.3759324e+09 0.11817109 0.026315480 -35.974340 54.475005 6595.9554 2.2549405e+09 0.11540008 0.025722644 -36.089760 54.384191 6598.0645 2.1474174e+09 0.11341831 0.025376383 -36.200106 54.295915 6600.1736 2.0628154e+09 0.11240781 0.025346752 -36.310452 54.207639 6602.2827 1.9749174e+09 0.11139992 0.027275377 -36.429621 54.113061 6604.3918 1.8842493e+09 0.10979700 0.026303934 -36.549624 54.017886 6606.5010 1.7881701e+09 0.10878141 0.026603766 -36.669628 53.920654 6608.6101 1.6917470e+09 0.10580286 0.023716241 -36.789633 53.821340 6610.7192 1.6035467e+09 0.10249642 0.024690152 -36.909304 53.722026 6612.8283 1.5205284e+09 0.10076865 0.023701868 -37.025169 53.622713 6614.9374 1.4423893e+09 0.099174824 0.023294638 -37.141034 53.523401 6617.0466 1.3664334e+09 0.097342671 0.023454684 -37.256911 53.424078 6619.1557 1.2981675e+09 0.096130877 0.024563476 -37.372793 53.324749 6621.2648 1.2307926e+09 0.094739366 0.025001680 -37.488671 53.226448 6623.3739 1.1685358e+09 0.092544162 0.024630355 -37.604538 53.131273 6625.4830 1.1114960e+09 0.090780883 0.025974008 -37.720405 53.036098 6627.5922 1.0504271e+09 0.088720194 0.025545550 -37.836270 52.937484 6629.7013 9.9408564e+08 0.087597232 0.025982313 -37.952135 52.838170 6631.8104 9.4099284e+08 0.086174710 0.026013085 -38.061142 52.743429 6633.9195 8.9924368e+08 0.084967802 0.026312790 -38.160454 52.655152 6636.0286 8.6411306e+08 0.083676917 0.026538633 -38.259766 52.566876 6638.1378 8.3127179e+08 0.082822233 0.025665641 -38.364835 52.470922 6640.2469 7.9739449e+08 0.082927485 0.025240447 -38.472424 52.371608 6642.3560 7.6106859e+08 0.082970754 0.025166264 -38.580014 52.272294 6644.4651 7.2793396e+08 0.082021552 0.025393875 -38.687604 52.172982 6646.5742 6.9224128e+08 0.081023407 0.026217389 -38.795194 52.073669 6648.6834 6.6013006e+08 0.079920732 0.027421723 -38.902783 51.974356 6650.7925 6.2828564e+08 0.079469741 0.026436656 -39.010372 51.875042 6652.9016 5.9724248e+08 0.079084765 0.027498586 -39.117968 51.775722 6655.0107 5.6821578e+08 0.077894059 0.027614643 -39.225574 51.676395 6657.1198 5.4459536e+08 0.075919975 0.029040113 -39.333058 51.577068 6659.2290 5.2050305e+08 0.074333178 0.031786839 -39.436509 51.477754 6661.3381 4.9561912e+08 0.072929371 0.032707137 -39.539960 51.378440 6663.4472 4.7361936e+08 0.071565983 0.032359285 -39.643412 51.279126 6665.5563 4.4797939e+08 0.071191953 0.027635593 -39.746864 51.179811 6667.6654 4.2951053e+08 0.070431655 0.027347882 -39.850316 51.080497 6669.7746 4.1191481e+08 0.069484008 0.027560183 -39.953767 50.981185 6671.8837 3.9281720e+08 0.069134321 0.026877942 -40.057218 50.881873 6673.9928 3.7805153e+08 0.068248692 0.028944011 -40.157442 50.779333 6676.1019 3.6089362e+08 0.066024597 0.031779406 -40.256754 50.675882 6678.2110 3.4282179e+08 0.065189685 0.030795467 -40.356067 50.573933 6680.3202 3.2964268e+08 0.065646293 0.029510551 -40.455381 50.474619 6682.4293 3.1531056e+08 0.066373121 0.030752523 -40.554695 50.375305 6684.5384 3.0176343e+08 0.066438016 0.032681413 -40.654008 50.275992 6686.6475 2.9054143e+08 0.065221026 0.034137817 -40.753321 50.176679 6688.7566 2.7530454e+08 0.062507441 0.033959847 -40.850441 50.077366 6690.8658 2.6510214e+08 0.061348757 0.033016648 -40.945616 49.978052 6692.9749 2.5193159e+08 0.060489239 0.031633269 -41.040791 49.878738 6695.0840 2.3846962e+08 0.059834298 0.029844046 -41.135966 49.779426 6697.1931 2.2714959e+08 0.059158478 0.030115704 -41.231141 49.680114 6699.3022 2.1305850e+08 0.057706992 0.031311559 -41.326327 49.577907 6701.4114 2.0539306e+08 0.055831246 0.032013015 -41.421517 49.474440 6703.5205 1.9462194e+08 0.055680958 0.034977620 -41.515543 49.372138 6705.6296 1.8486440e+08 0.055591461 0.037787892 -41.606579 49.272824 6707.7387 1.7515245e+08 0.055097519 0.040081007 -41.697615 49.173510 6709.8478 1.6832898e+08 0.053954639 0.040593281 -41.792227 49.074196 6711.9570 1.6214166e+08 0.051775905 0.041780981 -41.887403 48.974882 6714.0661 1.5788181e+08 0.049611723 0.047308376 -41.980727 48.875568 6716.1752 1.5329374e+08 0.047877397 0.048659400 -42.071764 48.776256 6718.2843 1.4414023e+08 0.045633084 0.050255207 -42.163057 48.676361 6720.3934 1.3929356e+08 0.045038907 0.050374181 -42.262372 48.558128 6722.5026 1.2944693e+08 0.044583808 0.049983920 -42.361687 48.439896 6724.6117 1.2353932e+08 0.041355545 0.044818817 -42.453417 48.338999 6726.7208 1.2346280e+08 0.039194946 0.040957868 -42.544455 48.239685 6728.8299 1.1687013e+08 0.038984669 0.040804355 -42.633424 48.140372 6730.9390 1.1133113e+08 0.037494410 0.041666429 -42.720323 48.041059 6733.0482 1.0407061e+08 0.036502705 0.044185730 -42.807221 47.941403 6735.1573 1.0062109e+08 0.037061379 0.049460387 -42.894121 47.837951 6737.2664 1.0136843e+08 0.039114944 0.054984159 -42.981020 47.734499 6739.3755 96441656. 0.039816157 0.063286105 -43.076196 47.624347 6741.4846 87048234. 0.038352130 0.067140885 -43.175512 47.510843 6743.5938 78271005. 0.034249469 0.075052864 -43.265689 47.405174 6745.7029 75595506. 0.032701906 0.078862367 -43.348448 47.305862 6747.8120 72715017. 0.028721425 0.067081624 -43.431208 47.205989 6749.9211 69304746. 0.026434678 0.072025732 -43.513970 47.102537 6752.0302 64811505. 0.023378393 0.074099494 -43.596731 46.999086 6754.1394 57144982. 0.021593390 0.075989379 -43.687993 46.888408 6756.2485 55255841. 0.018272490 0.074806259 -43.782580 46.774903 6758.3576 50518956. 0.015955123 0.074461494 -43.870020 46.667474 6760.4667 46602172. 0.011229448 0.076951266 -43.952781 46.564023 6762.5758 47374479. -0.010936664 0.077121984 -44.035545 46.461346 6764.6849 47929399. 0.014133724 0.079516100 -44.118319 46.362019 6766.7941 52504299. 0.059108607 0.081509948 -44.201092 46.262692