# # 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 = 49.588731 km # Date (UTC) = 2016-01-16T10:41:21.447 # Date (julian) = 2457403.94538711 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6500.1162 6.6633736e+10 0.043575451 0.032318253 94.761568 38.726832 6502.2585 6.1767907e+10 0.052810664 0.032964248 94.836273 38.599022 6504.4007 5.6630300e+10 0.062277557 0.033610243 94.913130 38.464521 6506.5430 5.1609408e+10 0.072026529 0.034256237 94.989988 38.330019 6508.6853 4.6683082e+10 0.082030493 0.034902232 95.066847 38.195516 6510.8275 4.2262839e+10 0.092413022 0.035548227 95.139492 38.068388 6512.9698 3.8739482e+10 0.10338876 0.036194221 95.206739 37.950702 6515.1121 3.5699082e+10 0.11485968 0.036840216 95.274558 37.832019 6517.2543 3.2791910e+10 0.12665905 0.037486211 95.351418 37.697517 6519.3966 2.9983228e+10 0.13875149 0.038132205 95.428278 37.563016 6521.5389 2.7406945e+10 0.15118199 0.038778200 95.495751 37.444935 6523.6811 2.5286503e+10 0.15917204 0.039347932 95.563008 37.327230 6525.8234 2.3400076e+10 0.16520080 0.039688241 95.633138 37.202344 6527.9657 2.1470231e+10 0.17151259 0.041417563 95.705193 37.072646 6530.1079 1.9644976e+10 0.17652343 0.043979811 95.772592 36.949158 6532.2502 1.8077235e+10 0.18008027 0.046893212 95.835639 36.831471 6534.3925 1.6681898e+10 0.18149246 0.048054347 95.900589 36.711469 6536.5347 1.5306204e+10 0.18108195 0.048268946 95.977449 36.576968 6538.6770 1.3960919e+10 0.18042729 0.049486347 96.053534 36.443409 6540.8193 1.2792616e+10 0.17857704 0.051241147 96.116578 36.325721 6542.9615 1.1875365e+10 0.17608301 0.051367291 96.179622 36.208033 6545.1038 1.1045296e+10 0.17395203 0.052456497 96.248765 36.078966 6547.2461 1.0214297e+10 0.17151105 0.053380940 96.320820 35.944465 6549.3883 9.4155588e+09 0.16909867 0.054362025 96.385013 35.822470 6551.5306 8.7437095e+09 0.16707247 0.055422001 96.443856 35.708987 6553.6729 8.1894172e+09 0.16468805 0.054996825 96.505551 35.590966 6555.8151 7.6140520e+09 0.16218559 0.054168457 96.577606 35.456465 6557.9574 7.0603538e+09 0.16006233 0.053266006 96.647890 35.324219 6560.0997 6.5681872e+09 0.15731273 0.052184447 96.706733 35.206533 6562.2419 6.1685950e+09 0.15410549 0.050649695 96.765576 35.088848 6564.3842 5.8191276e+09 0.15083272 0.048597478 96.834392 34.962094 6566.5265 5.4517382e+09 0.14822257 0.046885064 96.906448 34.832395 6568.6687 5.0889772e+09 0.14585236 0.045156939 96.969609 34.710782 6570.8110 4.7662783e+09 0.14371373 0.044581566 97.028452 34.593094 6572.9533 4.4832068e+09 0.14131202 0.043684246 97.089767 34.470465 6575.0955 4.1995726e+09 0.13855194 0.042278861 97.157017 34.335963 6577.2378 3.9193044e+09 0.13542824 0.039846852 97.222484 34.205921 6579.3801 3.6647952e+09 0.13189315 0.036861560 97.281327 34.092438 6581.5223 3.4509962e+09 0.12864817 0.035438441 97.340170 33.978955 6583.6646 3.2798271e+09 0.12538376 0.034685278 97.399013 33.861971 6585.8069 3.1270750e+09 0.12209674 0.033325706 97.457856 33.744285 6587.9491 2.9669281e+09 0.11969897 0.033368660 97.518335 33.618969 6590.0914 2.7968990e+09 0.11719942 0.030892062 97.580785 33.484467 6592.2337 2.6309947e+09 0.11473615 0.027846572 97.641893 33.357785 6594.3759 2.4899629e+09 0.11247680 0.025966159 97.700736 33.244301 6596.5182 2.3665946e+09 0.10987635 0.025724918 97.759585 33.130782 6598.6605 2.2402638e+09 0.10806501 0.025091839 97.821999 32.996466 6600.8027 2.1086932e+09 0.10795888 0.026640128 97.884445 32.861963 6602.9450 1.9873947e+09 0.10711807 0.026710216 97.943608 32.746611 6605.0873 1.8869658e+09 0.10634233 0.026738245 98.002451 32.633129 6607.2295 1.7990339e+09 0.10487455 0.025253774 98.063212 32.508468 6609.3718 1.7018707e+09 0.10188134 0.023816370 98.125662 32.373964 6611.5141 1.6033987e+09 0.099282848 0.024630640 98.184596 32.248922 6613.6563 1.5155519e+09 0.098303410 0.023814396 98.239235 32.135438 6615.7986 1.4421278e+09 0.096747370 0.023276102 98.293874 32.021656 6617.9409 1.3841180e+09 0.095871987 0.023751186 98.348521 31.903953 6620.0831 1.3306172e+09 0.094957731 0.024793983 98.403168 31.786249 6622.2254 1.2716982e+09 0.093470301 0.024698002 98.463215 31.660245 6624.3677 1.2045559e+09 0.091592686 0.025059112 98.525665 31.530546 6626.5099 1.1392885e+09 0.089913072 0.025941220 98.583348 31.408179 6628.6522 1.0775663e+09 0.088362080 0.025967889 98.637987 31.290493 6630.7945 1.0258517e+09 0.086490579 0.025930259 98.693320 31.170031 6632.9367 9.7142924e+08 0.084987386 0.026144665 98.750965 31.040333 6635.0790 9.2140005e+08 0.083501626 0.026411632 98.808161 30.912429 6637.2212 8.7570942e+08 0.082185253 0.026053050 98.862800 30.794742 6639.3635 8.3928697e+08 0.081664465 0.025498146 98.917439 30.677056 6641.5058 8.0017362e+08 0.082425967 0.025150018 98.974393 30.550118 6643.6480 7.5740630e+08 0.081944811 0.025290466 99.032038 30.420419 6645.7903 7.1320739e+08 0.081264161 0.025821917 99.087614 30.301883 6647.9326 6.7849938e+08 0.080511897 0.026928788 99.142253 30.188400 6650.0748 6.5244655e+08 0.079899825 0.026272371 99.195593 30.073618 6652.2171 6.2632565e+08 0.079475264 0.027310257 99.246031 29.955931 6654.3594 5.9911213e+08 0.078775098 0.027883127 99.296469 29.838245 6656.5016 5.6466084e+08 0.077138613 0.028463709 99.353606 29.709388 6658.6439 5.3609476e+08 0.075765678 0.031203069 99.411247 29.579690 6660.7862 5.1013033e+08 0.074524929 0.032340595 99.462779 29.463745 6662.9284 4.9096911e+08 0.073364750 0.032523360 99.513218 29.350262 6665.0707 4.6867898e+08 0.072797993 0.028431270 99.567036 29.229174 6667.2130 4.4601894e+08 0.072399237 0.027181687 99.624681 29.099476 6669.3552 4.2610878e+08 0.071395110 0.027990844 99.679534 28.974429 6671.4975 4.0934313e+08 0.071378099 0.026872438 99.729968 28.856742 6673.6398 3.9831604e+08 0.070686551 0.028416048 99.780461 28.738959 6675.7820 3.7940861e+08 0.068631629 0.031296253 99.838106 28.609261 6677.9243 3.6102368e+08 0.067451192 0.031044219 99.895751 28.479563 6680.0666 3.4161809e+08 0.067664524 0.029455792 99.942826 28.364885 6682.2088 3.3082149e+08 0.068384863 0.030584104 99.989061 28.251402 6684.3511 3.2077263e+08 0.068596637 0.032671909 100.04154 28.129048 6686.4934 3.0525849e+08 0.067779776 0.034048136 100.09918 27.999349 6688.6356 2.9282086e+08 0.065294926 0.033931917 100.15151 27.877196 6690.7779 2.7519660e+08 0.064307908 0.033026715 100.19774 27.763712 6692.9202 2.6462563e+08 0.063664650 0.031696790 100.24496 27.648833 6695.0624 2.5534236e+08 0.063247920 0.029848005 100.30261 27.519135 6697.2047 2.4762457e+08 0.062809667 0.030117171 100.36020 27.389492 6699.3470 2.3997476e+08 0.061590441 0.031270279 100.40644 27.271803 6701.4892 2.3122353e+08 0.059969068 0.032127293 100.45267 27.154117 6703.6315 2.2104510e+08 0.060163380 0.035255452 100.50303 27.028922 6705.7738 2.1024871e+08 0.060365512 0.038044208 100.55587 26.899224 6707.9160 2.0277992e+08 0.060153644 0.040055606 100.61132 26.769525 6710.0583 1.9391331e+08 0.059138005 0.040507906 100.66896 26.639826 6712.2006 1.8774920e+08 0.057111367 0.042202343 100.72134 26.517613 6714.3428 1.7889390e+08 0.055166554 0.047329183 100.76757 26.404129 6716.4851 1.6796751e+08 0.053498048 0.049115865 100.81435 26.289310 6718.6274 1.5638797e+08 0.051399602 0.050789487 100.86719 26.159612 6720.7696 1.4850373e+08 0.051464202 0.050330591 100.92001 26.029982 6722.9119 1.4668979e+08 0.050684952 0.049477862 100.96627 25.916425 6725.0542 1.4267013e+08 0.046536246 0.041542187 101.01251 25.802925 6727.1964 1.3474324e+08 0.045140545 0.040698686 101.06286 25.679353 6729.3387 1.2928514e+08 0.044681424 0.040819678 101.11570 25.549655 6731.4810 1.2471823e+08 0.043024311 0.042707228 101.16594 25.422562 6733.6232 1.1820584e+08 0.042078205 0.047307993 101.21396 25.297688 6735.7655 1.1347135e+08 0.043428887 0.050106061 101.26117 25.178023 6737.9078 1.0891639e+08 0.044936577 0.057027258 101.30741 25.064522 6740.0500 1.0756371e+08 0.044894813 0.064135823 101.35418 24.949741 6742.1923 1.0616218e+08 0.042613507 0.069079308 101.40702 24.820044 6744.3346 97086248. 0.038420359 0.078052185 101.45984 24.690346 6746.4768 89885953. 0.035806835 0.073443654 101.50791 24.560648 6748.6191 87295226. 0.033871498 0.070273960 101.55594 24.430950 6750.7614 84211510. 0.031189410 0.073304179 101.60838 24.301252 6752.9036 81311448. 0.028557903 0.073088815 101.66122 24.171554 6755.0459 75049211. 0.026950256 0.074585226 101.70504 24.055376 6757.1882 72112042. 0.024645217 0.076169053 101.74707 23.941892 6759.3304 73008866. 0.025706461 0.075899691 101.79184 23.823222 6761.4727 67447032. 0.027730456 0.078007278 101.83988 23.698327 6763.6150 64511227. 0.032122395 0.078310621 101.88970 23.571642 6765.7572 58655572. 0.034237774 0.079669427 101.94254 23.441944 6767.8995 58978365. 0.031885889 0.080968574 101.99399 23.312246 6770.0418 58284464. 0.027361249 0.086980970 102.04202 23.182548 6772.1840 57180856. 0.023540410 0.092176907 102.09006 23.052849 6774.3263 55694983. 0.019703754 0.097372845 102.13809 22.923151 6776.4686 52445078. 0.015828454 0.10256878 102.18613 22.794066 6778.6108 53456499. 0.011897802 0.10776472 102.23416 22.669172 6780.7531 50587557. 0.0073942817 0.11296066 102.28220 22.544058 6782.8954 49264205. -0.00040789776 0.11815659 102.33023 22.414382 6785.0376 47669615. -0.00093870230 0.12335253 102.37825 22.284706 6787.1799 45542748. 0.0026447937 0.12854847 102.42629 22.159639