# # 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 = 45.235825 km # Date (UTC) = 2014-01-24T09:38:00.055 # Date (julian) = 2456681.90138953 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6499.8279 8.1197322e+10 0.042763147 0.032231305 -19.806522 57.004257 6501.7545 7.2281746e+10 0.049730059 0.032812288 -19.972854 56.876930 6503.6812 6.5385000e+10 0.056968494 0.033393271 -20.139186 56.750921 6505.6079 5.9838230e+10 0.064575099 0.033974254 -20.305519 56.621107 6507.5346 5.5028842e+10 0.072551504 0.034555237 -20.471852 56.490055 6509.4612 5.1141083e+10 0.081009904 0.035136219 -20.634300 56.359006 6511.3879 4.7740479e+10 0.089921255 0.035717202 -20.795592 56.227957 6513.3146 4.4428131e+10 0.099191303 0.036298185 -20.952918 56.100873 6515.2413 4.1490388e+10 0.10893465 0.036879168 -21.109170 55.974863 6517.1679 3.8682976e+10 0.11906513 0.037460151 -21.265397 55.844828 6519.0946 3.6156602e+10 0.12964047 0.038041134 -21.421619 55.713803 6521.0213 3.3831002e+10 0.14062002 0.038622117 -21.577865 55.582758 6522.9479 3.1615183e+10 0.14932166 0.039165480 -21.734116 55.451709 6524.8746 2.9552059e+10 0.15610667 0.039737670 -21.886162 55.320659 6526.8013 2.7635187e+10 0.16114369 0.040508138 -22.037373 55.189608 6528.7280 2.5821773e+10 0.16535008 0.042019971 -22.184299 55.058559 6530.6546 2.4088632e+10 0.16952657 0.044745163 -22.330470 54.927509 6532.5813 2.2403985e+10 0.17364206 0.047169806 -22.476641 54.796460 6534.5080 2.0750187e+10 0.17527581 0.048086657 -22.622811 54.665411 6536.4346 1.9241437e+10 0.17505319 0.048179388 -22.768982 54.534361 6538.3613 1.7893838e+10 0.17521824 0.049332623 -22.915154 54.403310 6540.2880 1.6695038e+10 0.17451859 0.050990155 -23.056771 54.272284 6542.2147 1.5571812e+10 0.17230552 0.051083735 -23.197873 54.141261 6544.1413 1.4404542e+10 0.17027035 0.051758999 -23.339001 54.010212 6546.0680 1.3318122e+10 0.16830023 0.052520483 -23.480132 53.879162 6547.9947 1.2425796e+10 0.16746263 0.053665621 -23.602508 53.765528 6549.9213 1.1745481e+10 0.16637684 0.054905207 -23.723474 53.653204 6551.8480 1.1135460e+10 0.16487715 0.055533419 -23.853747 53.529355 6553.7747 1.0486633e+10 0.16299236 0.054945639 -23.989838 53.398304 6555.7014 9.8203696e+09 0.16139524 0.054264051 -24.122745 53.267254 6557.6280 9.1855679e+09 0.15999319 0.053472452 -24.253794 53.136205 6559.5547 8.6008836e+09 0.15789304 0.052324570 -24.388107 53.001893 6561.4814 8.0526633e+09 0.15553811 0.051135467 -24.524197 52.865802 6563.4081 7.5741492e+09 0.15334416 0.049456344 -24.644521 52.745479 6565.3347 7.1853058e+09 0.15139954 0.047938312 -24.756847 52.633154 6567.2614 6.8551485e+09 0.14953745 0.046396170 -24.873944 52.514299 6569.1881 6.5202028e+09 0.14748486 0.044864665 -24.999954 52.383248 6571.1147 6.1442832e+09 0.14586345 0.044471937 -25.125954 52.250369 6573.0414 5.7413892e+09 0.14407744 0.043624248 -25.251938 52.114306 6574.9681 5.3867829e+09 0.14182775 0.042390036 -25.371083 51.987272 6576.8948 5.1121609e+09 0.13913833 0.040341508 -25.479088 51.874948 6578.8214 4.8841288e+09 0.13621380 0.037352481 -25.588276 51.761062 6580.7481 4.6490908e+09 0.13413123 0.035829399 -25.714286 51.624972 6582.6748 4.4026993e+09 0.13273638 0.035110170 -25.838471 51.490823 6584.6014 4.1764531e+09 0.13111447 0.034187881 -25.942156 51.378499 6586.5281 3.9919800e+09 0.12940540 0.033164469 -26.045840 51.266174 6588.4548 3.8143872e+09 0.12800046 0.033228052 -26.162782 51.135621 6590.3815 3.6160649e+09 0.12618680 0.030352488 -26.283751 50.999530 6592.3081 3.4293264e+09 0.12419537 0.027774234 -26.387804 50.882048 6594.2348 3.2679731e+09 0.12205061 0.026043626 -26.487169 50.769722 6596.1615 3.1276256e+09 0.11948229 0.025726540 -26.594291 50.646267 6598.0882 2.9796785e+09 0.11774393 0.025365079 -26.710220 50.510176 6600.0148 2.8092105e+09 0.11711591 0.025020348 -26.826148 50.376528 6601.9415 2.6355602e+09 0.11661406 0.027489081 -26.942077 50.245478 6603.8682 2.4806178e+09 0.11515426 0.026149321 -27.049718 50.121636 6605.7948 2.3559460e+09 0.11465858 0.027331850 -27.149082 50.004990 6607.7215 2.2560040e+09 0.11251524 0.024282282 -27.250582 49.885676 6609.6482 2.1506364e+09 0.10946859 0.023898472 -27.361449 49.754653 6611.5749 2.0336355e+09 0.10679376 0.024591868 -27.469131 49.626523 6613.5015 1.9191367e+09 0.10563551 0.023757602 -27.564175 49.509878 6615.4282 1.8172305e+09 0.10404030 0.023264706 -27.659219 49.393232 6617.3549 1.7455194e+09 0.10248324 0.023556906 -27.754263 49.276587 6619.2815 1.6811610e+09 0.10123123 0.024593846 -27.849307 49.159941 6621.2082 1.6063621e+09 0.10007885 0.025020432 -27.950530 49.035058 6623.1349 1.5263722e+09 0.098635744 0.024541800 -28.056379 48.904006 6625.0616 1.4404606e+09 0.097604076 0.025471064 -28.153336 48.781425 6626.9882 1.3736105e+09 0.095787882 0.025331804 -28.244059 48.664781 6628.9149 1.3182939e+09 0.094919099 0.026074555 -28.338915 48.542825 6630.8416 1.2594149e+09 0.093510504 0.025930376 -28.444763 48.406735 6632.7682 1.1974945e+09 0.092398773 0.026124464 -28.546238 48.277517 6634.6949 1.1399484e+09 0.091132039 0.026377534 -28.636961 48.165191 6636.6216 1.0933685e+09 0.089702229 0.026308363 -28.727685 48.052865 6638.5483 1.0446652e+09 0.088741488 0.025647756 -28.828236 47.917381 6640.4749 9.9478631e+08 0.089018522 0.025212543 -28.929029 47.781311 6642.4016 9.3944344e+08 0.088927218 0.025168131 -29.015584 47.664460 6644.3283 8.9437929e+08 0.087896863 0.025379086 -29.101988 47.547813 6646.2550 8.6505635e+08 0.086726804 0.026052119 -29.188392 47.431169 6648.1816 8.3618542e+08 0.085597693 0.027085865 -29.274797 47.314525 6650.1083 8.0910657e+08 0.084727298 0.026280029 -29.364582 47.192679 6652.0350 7.7746651e+08 0.083969072 0.027260142 -29.460349 47.061628 6653.9616 7.4437283e+08 0.083134678 0.028016641 -29.552585 46.936010 6655.8883 7.1671255e+08 0.081296285 0.027977269 -29.638989 46.819364 6657.8150 6.8858969e+08 0.079711910 0.029846469 -29.725975 46.701507 6659.7417 6.6060890e+08 0.078104635 0.031679888 -29.821724 46.565444 6661.6683 6.2725058e+08 0.076609056 0.032875344 -29.916406 46.431233 6663.5950 5.9556197e+08 0.075386357 0.032318323 -29.998490 46.318908 6665.5217 5.7328469e+08 0.075224280 0.027692349 -30.080575 46.206583 6667.4483 5.5293734e+08 0.074795480 0.027268143 -30.159361 46.090960 6669.3750 5.3889064e+08 0.073889713 0.027970533 -30.237125 45.974314 6671.3017 5.1857279e+08 0.073980434 0.026869648 -30.322965 45.848945 6673.2284 4.9461366e+08 0.073672592 0.027800750 -30.418731 45.712855 6675.1550 4.7368578e+08 0.072247904 0.030095305 -30.506133 45.585799 6677.0817 4.4980794e+08 0.070457195 0.032242063 -30.583896 45.469154 6679.0084 4.2976338e+08 0.069938555 0.030260848 -30.663604 45.349593 6680.9351 4.1179190e+08 0.070997059 0.029643333 -30.754331 45.213502 6682.8617 3.9156217e+08 0.071649587 0.031082932 -30.842906 45.081356 6684.7884 3.7548664e+08 0.071588506 0.032694100 -30.920670 44.969032 6686.7151 3.5704153e+08 0.070399214 0.034177121 -30.998433 44.856708 6688.6417 3.4067533e+08 0.068024155 0.033933326 -31.072520 44.740704 6690.5684 3.2935149e+08 0.066911137 0.033050723 -31.145964 44.624058 6692.4951 3.1529537e+08 0.066135995 0.032190418 -31.225976 44.496979 6694.4218 3.0403760e+08 0.065428872 0.030669914 -31.311663 44.360888 6696.3484 2.9022516e+08 0.065288756 0.029820550 -31.392971 44.235543 6698.2751 2.7856991e+08 0.064502907 0.030595423 -31.470735 44.118898 6700.2018 2.7038440e+08 0.063055277 0.030817378 -31.546443 44.003280 6702.1284 2.5923744e+08 0.061725377 0.032979293 -31.615566 43.890955 6704.0551 2.4651869e+08 0.062134821 0.036204618 -31.684689 43.778631 6705.9818 2.3272153e+08 0.062311563 0.038414027 -31.769103 43.644367 6707.9085 2.2319758e+08 0.062163177 0.040056691 -31.854789 43.508277 6709.8351 2.1322785e+08 0.061382840 0.040601359 -31.928977 43.390448 6711.7618 2.0680750e+08 0.059661105 0.041558957 -32.002420 43.273801 6713.6885 2.0239243e+08 0.057869391 0.046176695 -32.073165 43.157156 6715.6151 1.9555123e+08 0.056390627 0.048007745 -32.142288 43.040510 6717.5418 1.9070887e+08 0.054561819 0.049840754 -32.214976 42.919411 6719.4685 1.8241050e+08 0.052986124 0.050924737 -32.295606 42.788388 6721.3952 1.7273718e+08 0.053358358 0.050422964 -32.372491 42.662044 6723.3218 1.6769867e+08 0.052032242 0.049548438 -32.441614 42.545398 6725.2485 1.6044715e+08 0.048032043 0.041420789 -32.510861 42.428545 6727.1752 1.5296518e+08 0.046574070 0.040726995 -32.591507 42.292455 6729.1019 1.4826551e+08 0.046039744 0.040977540 -32.671845 42.156884 6731.0285 1.4109205e+08 0.044204065 0.041806796 -32.740969 42.040238 6732.9552 1.3499883e+08 0.042895077 0.043916058 -32.810094 41.923593 6734.8819 1.2723300e+08 0.042575750 0.049300540 -32.883833 41.796691 6736.8085 1.1945266e+08 0.043782397 0.053411745 -32.959438 41.665641 6738.7352 1.1525610e+08 0.044158946 0.061368781 -33.030324 41.545078 6740.6619 1.1131814e+08 0.042972699 0.065181080 -33.099447 41.428433 6742.5886 1.0714849e+08 0.039807945 0.070044883 -33.166785 41.311787 6744.5152 1.0306155e+08 0.035678385 0.078191929 -33.231588 41.195142 6746.4419 98570367. 0.032704051 0.073849673 -33.297457 41.076579 6748.3686 93982632. 0.030048448 0.068955981 -33.373062 40.940489 6750.2952 89251935. 0.026869153 0.072508276 -33.447428 40.807123 6752.2219 83321316. 0.023619336 0.073877675 -33.512231 40.694798 6754.1486 81639901. 0.022161620 0.075974519 -33.577035 40.582474 6756.0753 79681199. 0.019405980 0.074360570 -33.650480 40.451139 6758.0019 76950361. 0.018228686 0.073709414 -33.726086 40.315048 6759.9286 72971119. 0.017702846 0.076044043 -33.789353 40.194823 6761.8553 68419071. 0.018876698 0.078038888 -33.849836 40.078177 6763.7820 66916693. 0.018085155 0.078819212 -33.915365 39.954323 6765.7086 63307960. -0.0052907394 0.079660555 -33.985916 39.823299 6767.6353 58821044. 0.013421879 0.081264400 -34.053495 39.699707 6769.5620 53000101. 0.059419079 0.085817278 -34.118297 39.583063