# # 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 = 47.180055 km # Date (UTC) = 2010-12-13T11:08:07.901 # Date (julian) = 2455543.96398033 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.0791 2.0595483e+11 0.036826420 0.031402418 84.147908 35.684782 6499.6426 1.6503495e+11 0.046475701 0.032175431 84.226337 35.552433 6502.2061 1.3100760e+11 0.056012638 0.032948444 84.297868 35.431726 6504.7696 1.0717133e+11 0.065642493 0.033721457 84.369399 35.311018 6507.3330 8.9831990e+10 0.075571901 0.034494470 84.440927 35.194745 6509.8965 7.7216342e+10 0.086031377 0.035267483 84.512455 35.078508 6512.4600 6.6703849e+10 0.097021633 0.036040496 84.590744 34.947493 6515.0235 5.7417499e+10 0.10851817 0.036813509 84.671231 34.811676 6517.5870 4.9587079e+10 0.12066798 0.037586522 84.744848 34.687445 6520.1505 4.3456309e+10 0.13372765 0.038359536 84.816376 34.566738 6522.7140 3.8696020e+10 0.14578666 0.039104214 84.885536 34.446032 6525.2775 3.4719193e+10 0.15352290 0.039750548 84.952596 34.325327 6527.8410 3.1310027e+10 0.16008078 0.041327013 85.020966 34.204622 6530.4044 2.8394818e+10 0.16608436 0.044394906 85.092498 34.083915 6532.9679 2.5749550e+10 0.17152131 0.047492795 85.164249 33.962359 6535.5314 2.3158112e+10 0.17410981 0.047993770 85.239689 33.826562 6538.0949 2.0715645e+10 0.17660362 0.049202895 85.314559 33.692094 6540.6584 1.8513131e+10 0.17683983 0.051165144 85.381628 33.575842 6543.2219 1.6713583e+10 0.17472663 0.051440127 85.448697 33.459590 6545.7854 1.5277670e+10 0.17135620 0.052462603 85.515758 33.339634 6548.3489 1.3971830e+10 0.16837677 0.053771827 85.582818 33.218927 6550.9123 1.2715000e+10 0.16531519 0.055213803 85.654863 33.089248 6553.4758 1.1496677e+10 0.16288644 0.055095871 85.730306 32.953453 6556.0393 1.0357054e+10 0.15971849 0.054007344 85.800666 32.826807 6558.6028 9.3806691e+09 0.15695393 0.052725636 85.867726 32.706101 6561.1663 8.5978020e+09 0.15332752 0.051290732 85.933136 32.587040 6563.7298 7.9513110e+09 0.14988845 0.049084171 85.995733 32.470788 6566.2933 7.3521384e+09 0.14688665 0.047016979 86.060038 32.351936 6568.8568 6.7576471e+09 0.14439941 0.044984093 86.135477 32.216138 6571.4203 6.1737149e+09 0.14241636 0.044388496 86.209057 32.082526 6573.9837 5.6499348e+09 0.13950547 0.042868054 86.271645 31.961820 6576.5472 5.2092626e+09 0.13665314 0.040741523 86.334233 31.841114 6579.1107 4.8411523e+09 0.13286608 0.037009632 86.396825 31.724467 6581.6742 4.5081119e+09 0.12962579 0.035392451 86.459416 31.608231 6584.2377 4.2024346e+09 0.12626856 0.034386031 86.522006 31.488995 6586.8012 3.9260935e+09 0.12300312 0.033160939 86.584594 31.368288 6589.3647 3.6467540e+09 0.11963955 0.032322507 86.650585 31.243204 6591.9282 3.3614810e+09 0.11571085 0.028154593 86.721008 31.112418 6594.4916 3.0850030e+09 0.11176900 0.025902634 86.787935 30.986131 6597.0551 2.8351214e+09 0.10745160 0.025705329 86.850523 30.865424 6599.6186 2.6258773e+09 0.10467975 0.024966937 86.913111 30.745654 6602.1821 2.4551604e+09 0.10338733 0.027361228 86.975699 30.629418 6604.7456 2.2911564e+09 0.10196360 0.026513988 87.038288 30.513182 6607.3091 2.1228363e+09 0.10081870 0.025096666 87.108486 30.377920 6609.8726 1.9554473e+09 0.097828492 0.023965127 87.178898 30.242126 6612.4361 1.8033696e+09 0.095781447 0.023994942 87.237208 30.125581 6614.9996 1.6788190e+09 0.094901529 0.023251841 87.295325 30.009345 6617.5630 1.5804648e+09 0.093765477 0.023625923 87.353450 29.889755 6620.1265 1.4875311e+09 0.093236091 0.024807971 87.411578 29.769033 6622.6900 1.3915394e+09 0.091874008 0.024574334 87.475983 29.643178 6625.2535 1.2919677e+09 0.090437579 0.025700110 87.546396 29.512411 6627.8170 1.1975370e+09 0.088617389 0.025632402 87.610382 29.386903 6630.3805 1.1147149e+09 0.087120205 0.025929239 87.668498 29.266196 6632.9440 1.0440152e+09 0.085467885 0.026145534 87.728692 29.142614 6635.5075 9.7738532e+08 0.083718247 0.026475888 87.794074 29.011846 6638.0709 9.0855557e+08 0.082427303 0.025668551 87.857295 28.885404 6640.6344 8.4787451e+08 0.082469740 0.025193028 87.915415 28.769167 6643.1979 7.9390282e+08 0.081988840 0.025222502 87.973536 28.652658 6645.7614 7.5076965e+08 0.080571759 0.025808376 88.031660 28.531936 6648.3249 7.1069700e+08 0.079140890 0.027181772 88.089785 28.411213 6650.8884 6.6951066e+08 0.078230239 0.026458614 88.153895 28.282211 6653.4519 6.2687863e+08 0.077501923 0.027756372 88.219281 28.151443 6656.0154 5.8766093e+08 0.075448153 0.028036901 88.278590 28.032825 6658.5788 5.5277703e+08 0.073661862 0.031087681 88.336706 27.916590 6661.1423 5.2176664e+08 0.072200086 0.032607445 88.396164 27.791647 6663.7058 4.9375720e+08 0.070975416 0.032287611 88.456520 27.660879 6666.2693 4.6727606e+08 0.071168496 0.026961074 88.515508 27.536258 6668.8328 4.4151920e+08 0.070245253 0.028207745 88.573625 27.415552 6671.3963 4.1994902e+08 0.070495873 0.026870996 88.632582 27.291074 6673.9598 3.9684841e+08 0.069957360 0.028894637 88.692947 27.160287 6676.5233 3.7141260e+08 0.067673770 0.032050967 88.753306 27.029508 6679.0868 3.4725200e+08 0.067021048 0.030196081 88.813658 26.898740 6681.6502 3.2291583e+08 0.068460382 0.030156215 88.873122 26.773754 6684.2137 3.0447894e+08 0.068936007 0.032664938 88.931242 26.657519 6686.7772 2.9022900e+08 0.067687026 0.034213283 88.989721 26.538943 6689.3407 2.7345285e+08 0.064810892 0.033709332 89.050073 26.408175 6691.9042 2.5880518e+08 0.063779912 0.032787932 89.109267 26.279917 6694.4677 2.4665717e+08 0.062938127 0.030605542 89.162916 26.163682 6697.0312 2.3409219e+08 0.062535299 0.030095210 89.216564 26.047448 6699.5947 2.2677029e+08 0.060921943 0.031041730 89.276486 25.917611 6702.1581 2.1389541e+08 0.059102234 0.033003013 89.336838 25.786844 6704.7216 2.0258761e+08 0.059514274 0.036531915 89.397193 25.656076 6707.2851 1.9111843e+08 0.059158078 0.040145982 89.457549 25.525309 6709.8486 1.7935721e+08 0.058102478 0.040592784 89.511477 25.408468 6712.4121 1.7257538e+08 0.055601785 0.042595094 89.565133 25.292216 6714.9756 1.6315435e+08 0.053283284 0.047376753 89.619995 25.165471 6717.5391 1.5758340e+08 0.050885521 0.049840924 89.675320 25.034704 6720.1026 1.4925011e+08 0.049489936 0.050407882 89.734338 24.903936 6722.6661 1.4034092e+08 0.049140240 0.049781788 89.794689 24.773169 6725.2295 1.2973663e+08 0.044692651 0.041432636 89.855044 24.642402 6727.7930 1.2171767e+08 0.043446504 0.039903842 89.915399 24.511634 6730.3565 1.1521252e+08 0.042001661 0.040867733 89.967281 24.391883 6732.9200 1.1011847e+08 0.040489768 0.043909579 90.016458 24.275646 6735.4835 1.0647122e+08 0.041014868 0.049806698 90.071462 24.151835 6738.0470 99916100. 0.042701428 0.057579756 90.131817 24.021068 6740.6105 96791328. 0.042103037 0.065093248 90.189494 23.890291 6743.1740 92082877. 0.038065698 0.072220968 90.244823 23.759505 6745.7374 89383673. 0.035178114 0.078876903 90.300150 23.628729 6748.3009 85943219. 0.031020493 0.068600135 90.355475 23.497961 6750.8644 81594624. 0.028151876 0.073480170 90.413601 23.367194 6753.4279 77297973. 0.025072714 0.074362092 90.473957 23.236426 6755.9914 73363341. 0.022301644 0.074170679 90.531452 23.108518 6758.5549 70871898. 0.021825412 0.074878708 90.586778 22.982779 6761.1184 68293570. 0.022536532 0.077978005 90.642103 22.854123 6763.6819 66299708. 0.027920351 0.078514399 90.697428 22.723355 6766.2454 60826631. 0.029087336 0.080268741 90.752753 22.592588 6768.8088 58570130. 0.023451461 0.083766428 90.808078 22.461821 6771.3723 54620912. 0.015875896 0.090208203 90.863402 22.334090 6773.9358 50741110. -0.0056742693 0.096425789 90.918727 22.208352 6776.4993 50012276. 0.0038744564 0.10264338 90.974053 22.079518 6779.0628 47800320. 0.030285796 0.10886096 91.029378 21.948750