# # 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 = 41.833696 km # Date (UTC) = 2016-01-17T09:25:17.406 # Date (julian) = 2457404.89256257 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6498.0303 8.4902083e+10 0.034374161 0.031689248 -18.878064 53.193279 6499.7737 7.8260049e+10 0.040812644 0.032214968 -18.994985 53.095369 6501.5171 7.2853191e+10 0.047588902 0.032740688 -19.104445 52.993729 6503.2605 6.5590555e+10 0.054248398 0.033266408 -19.213905 52.892089 6505.0039 6.0426387e+10 0.061484093 0.033792128 -19.323364 52.792354 6506.7473 5.6117197e+10 0.069201565 0.034317848 -19.432823 52.694622 6508.4907 5.1890773e+10 0.077268763 0.034843568 -19.542282 52.596890 6510.2341 4.8441953e+10 0.085893180 0.035369288 -19.639022 52.510516 6511.9776 4.5150726e+10 0.094939805 0.035895008 -19.734797 52.425002 6513.7210 4.2679509e+10 0.10470662 0.036420728 -19.830698 52.339342 6515.4644 4.0427664e+10 0.11498346 0.036946448 -19.940114 52.237752 6517.2078 3.8081661e+10 0.12554721 0.037472168 -20.049574 52.136112 6518.9512 3.5196615e+10 0.13612940 0.037997888 -20.157282 52.036222 6520.6946 3.1978869e+10 0.14670542 0.038523608 -20.262832 51.938491 6522.4380 2.9095420e+10 0.15630298 0.039031946 -20.368381 51.840759 6524.1814 2.7018625e+10 0.16252256 0.039491406 -20.462188 51.750856 6525.9248 2.5540635e+10 0.16762367 0.039676668 -20.554543 51.661922 6527.6682 2.4387991e+10 0.17384885 0.041201609 -20.646897 51.572987 6529.4116 2.3057475e+10 0.17740927 0.042891476 -20.748226 51.471774 6531.1550 2.1534426e+10 0.17923561 0.045454339 -20.849868 51.370133 6532.8984 1.9891916e+10 0.18132371 0.047434749 -20.951509 51.270089 6534.6419 1.8315803e+10 0.18104230 0.048124109 -21.053149 51.172358 6536.3853 1.6907391e+10 0.17936805 0.048135205 -21.154790 51.074626 6538.1287 1.5683691e+10 0.17919634 0.049219336 -21.245626 50.984375 6539.8721 1.4701004e+10 0.17867438 0.050699255 -21.334560 50.895440 6541.6155 1.3862262e+10 0.17640964 0.051126932 -21.423494 50.806505 6543.3589 1.2993233e+10 0.17473249 0.051476087 -21.520582 50.709417 6545.1023 1.2069789e+10 0.17360570 0.052456483 -21.618314 50.611686 6546.8457 1.1151645e+10 0.17183364 0.053160408 -21.711539 50.517199 6548.5891 1.0405378e+10 0.17000809 0.053843576 -21.797052 50.428266 6550.3325 9.8316950e+09 0.16883387 0.055068621 -21.882565 50.339333 6552.0759 9.3213623e+09 0.16732800 0.055567654 -21.973520 50.244741 6553.8193 8.7913061e+09 0.16496749 0.054923195 -22.071251 50.143099 6555.5627 8.2066119e+09 0.16311859 0.054380522 -22.168983 50.041457 6557.3062 7.6294166e+09 0.16123522 0.053674208 -22.263246 49.939816 6559.0496 7.0639458e+09 0.15847412 0.052381587 -22.357068 49.838176 6560.7930 6.5636255e+09 0.15581797 0.051559343 -22.447029 49.741846 6562.5364 6.1552269e+09 0.15326855 0.050369519 -22.529122 49.656332 6564.2798 5.8182527e+09 0.14999235 0.048644798 -22.611215 49.570819 6566.0232 5.5166410e+09 0.14691585 0.047169763 -22.698066 49.478761 6567.7666 5.1793935e+09 0.14475932 0.045969005 -22.791889 49.377120 6569.5100 4.8370191e+09 0.14247886 0.044885618 -22.885711 49.275478 6571.2534 4.5310123e+09 0.14054176 0.044434062 -22.966700 49.184598 6572.9968 4.2901721e+09 0.13883780 0.043659299 -23.045384 49.095652 6574.7402 4.0799282e+09 0.13686891 0.042499473 -23.124068 49.006705 6576.4836 3.8599023e+09 0.13470748 0.040814711 -23.213135 48.906022 6578.2271 3.6329367e+09 0.13260724 0.038291076 -23.303049 48.804381 6579.9705 3.4121033e+09 0.13067085 0.036536994 -23.388842 48.707399 6581.7139 3.2385342e+09 0.12845494 0.035380441 -23.467514 48.618464 6583.4573 3.0920296e+09 0.12646468 0.034790215 -23.546186 48.529529 6585.2007 2.9620472e+09 0.12452470 0.033810333 -23.629838 48.436697 6586.9441 2.8090896e+09 0.12258666 0.033159092 -23.719751 48.338965 6588.6875 2.6485864e+09 0.12073912 0.033150339 -23.809665 48.241233 6590.4309 2.5002537e+09 0.11860558 0.030260517 -23.886602 48.151289 6592.1743 2.3841265e+09 0.11620673 0.027904216 -23.961854 48.062356 6593.9177 2.2980752e+09 0.11357589 0.026249019 -24.037106 47.973422 6595.6611 2.1973431e+09 0.11083461 0.025692132 -24.122696 47.872270 6597.4045 2.0804591e+09 0.10858547 0.025595071 -24.208699 47.770628 6599.1479 1.9572129e+09 0.10665879 0.024938628 -24.290365 47.674114 6600.8914 1.8517736e+09 0.10613879 0.026822330 -24.365616 47.585181 6602.6348 1.7738897e+09 0.10470218 0.026974955 -24.440868 47.496247 6604.3782 1.7023534e+09 0.10288371 0.026295820 -24.519404 47.401214 6606.1216 1.6210581e+09 0.10187974 0.027285496 -24.601499 47.299572 6607.8650 1.5334528e+09 0.099779961 0.023998978 -24.683594 47.197931 6609.6084 1.4552850e+09 0.097221969 0.023886652 -24.756226 47.108005 6611.3518 1.3958777e+09 0.094972915 0.024734112 -24.828057 47.019072 6613.0952 1.3447173e+09 0.094291449 0.023608522 -24.899951 46.930061 6614.8386 1.2858841e+09 0.093400344 0.023362720 -24.981967 46.828517 6616.5820 1.2105590e+09 0.092359004 0.023373647 -25.064062 46.726875 6618.3254 1.1409874e+09 0.092076633 0.024016535 -25.141636 46.630830 6620.0688 1.0786362e+09 0.091734578 0.024789381 -25.213467 46.541897 6621.8122 1.0318269e+09 0.090757164 0.024820224 -25.285298 46.452964 6623.5557 9.9071520e+08 0.089303171 0.024697687 -25.355361 46.364031 6625.2991 9.4818596e+08 0.088381118 0.025754475 -25.423772 46.275097 6627.0425 9.1176310e+08 0.086502740 0.025333216 -25.492183 46.186164 6628.7859 8.6782217e+08 0.085703360 0.026022169 -25.568714 46.089689 6630.5293 8.2550695e+08 0.084450284 0.025929606 -25.650808 45.988048 6632.2727 7.7957448e+08 0.083226707 0.026065043 -25.732418 45.886855 6634.0161 7.3951633e+08 0.081967955 0.026328017 -25.800829 45.797922 6635.7595 7.0961808e+08 0.080723977 0.026513687 -25.869240 45.708989 6637.5029 6.8091488e+08 0.079678154 0.025915098 -25.938307 45.618634 6639.2463 6.5444840e+08 0.078828058 0.025540033 -26.012583 45.516992 6640.9897 6.2612719e+08 0.079259366 0.025149557 -26.086860 45.415350 6642.7331 6.0043574e+08 0.078816619 0.025181698 -26.157888 45.320746 6644.4765 5.7443400e+08 0.077794933 0.025395111 -26.226298 45.231813 6646.2200 5.5284102e+08 0.076818457 0.026034003 -26.294708 45.142880 6647.9634 5.2718835e+08 0.076144079 0.026944995 -26.366816 45.045936 6649.7068 5.0526790e+08 0.075561237 0.026659438 -26.441092 44.944295 6651.4502 4.8423527e+08 0.075337153 0.026829163 -26.514697 44.843572 6653.1936 4.5960908e+08 0.075247842 0.027624500 -26.579687 44.754638 6654.9370 4.4571734e+08 0.074369674 0.027637057 -26.644677 44.665705 6656.6804 4.2857363e+08 0.072893810 0.028620603 -26.711049 44.574882 6658.4238 4.1475082e+08 0.071825481 0.030812716 -26.785324 44.473242 6660.1672 3.9770689e+08 0.070885517 0.031777991 -26.859600 44.371602 6661.9106 3.7969320e+08 0.069768786 0.032998751 -26.926370 44.277466 6663.6540 3.7013174e+08 0.068735089 0.032301964 -26.987940 44.188531 6665.3974 3.5736412e+08 0.068697206 0.027895907 -27.049510 44.099596 6667.1409 3.4519279e+08 0.068322869 0.027155194 -27.119558 44.004792 6668.8843 3.3267634e+08 0.067265663 0.028253279 -27.193834 43.907061 6670.6277 3.1794832e+08 0.067388471 0.027037845 -27.266724 43.810288 6672.3711 3.0343831e+08 0.067136441 0.027094680 -27.328302 43.721342 6674.1145 2.8832208e+08 0.066352760 0.029051364 -27.389881 43.632395 6675.8579 2.7676361e+08 0.064452300 0.031441530 -27.453096 43.541086 6677.6013 2.6855364e+08 0.063326526 0.031503411 -27.523462 43.439445 6679.3447 2.5725104e+08 0.062948755 0.029982923 -27.593829 43.337803 6681.0881 2.4633973e+08 0.063698983 0.029724957 -27.658670 43.244143 6682.8315 2.3581357e+08 0.064127796 0.031059856 -27.720239 43.155210 6684.5749 2.3046867e+08 0.063974485 0.032683267 -27.781808 43.066277 6686.3183 2.2162358e+08 0.063148285 0.033946297 -27.846822 42.968389 6688.0617 2.0688533e+08 0.061207330 0.033799443 -27.913280 42.866747 6689.8052 1.9381580e+08 0.059573377 0.033291258 -27.980310 42.765105 6691.5486 1.8113771e+08 0.058772742 0.032871839 -28.050677 42.663465 6693.2920 1.7331659e+08 0.058144400 0.031503926 -28.121044 42.561825 6695.0354 1.6956811e+08 0.057808790 0.029852976 -28.184221 42.467662 6696.7788 1.6023409e+08 0.057408446 0.029999354 -28.242370 42.378727 6698.5222 1.5209449e+08 0.056538986 0.030934584 -28.300519 42.289793 6700.2656 1.4575700e+08 0.055244767 0.030864721 -28.364193 42.192409 6702.0090 1.4241767e+08 0.053928404 0.032883922 -28.430650 42.090769 6703.7524 1.4203668e+08 0.054365699 0.035558016 -28.496219 41.990488 6705.4958 1.3373187e+08 0.054487541 0.037550078 -28.554368 41.901555 6707.2392 1.2595437e+08 0.054202432 0.040152557 -28.612517 41.812622 6708.9826 1.1986615e+08 0.053745755 0.041113637 -28.672190 41.721357 6710.7260 1.1872365e+08 0.052556580 0.040638609 -28.738648 41.619715 6712.4695 1.1740517e+08 0.051026491 0.042701578 -28.805106 41.518073 6714.2129 1.0997054e+08 0.049323473 0.047319411 -28.869119 41.416432 6715.9563 1.0566689e+08 0.048083703 0.048356633 -28.931667 41.314792 6717.6997 99947986. 0.046493374 0.049830990 -28.993688 41.214008 6719.4431 97318545. 0.045166200 0.050948876 -29.048417 41.125073 6721.1865 97481722. 0.045766802 0.050360090 -29.103145 41.036139 6722.9299 94167923. 0.045088996 0.049455605 -29.159561 40.945376 6724.6733 90098083. 0.042070051 0.044304101 -29.226018 40.843736 6726.4167 84627817. 0.040133851 0.040955126 -29.292476 40.742096 6728.1601 75765605. 0.039792175 0.039855048 -29.356643 40.640455 6729.9035 72634407. 0.038868047 0.040443200 -29.419191 40.538813 6731.6469 69123006. 0.037613903 0.043037555 -29.481427 40.437525 6733.3903 68573942. 0.036949690 0.046043620 -29.532735 40.348591 6735.1338 68127288. 0.037487726 0.049435424 -29.584043 40.259658 6736.8772 63249383. 0.038645422 0.053671175 -29.636524 40.169398 6738.6206 60310719. 0.038987048 0.060737623 -29.699072 40.067757 6740.3640 57487648. 0.037711166 0.064672158 -29.761621 39.966115 6742.1074 55586712. 0.034375865 0.068872419 -29.824170 39.864474 6743.8508 53365831. 0.026946073 0.076786879 -29.886718 39.762834 6745.5942 51200439. 0.0053736824 0.078816684 -29.949266 39.661194 6747.3376 50257301. 0.017330288 0.067244935 -30.000706 39.572111 6749.0810 52267441. 0.051839229 0.072255750 -30.052014 39.483178