# # 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 = 44.377935 km # Date (UTC) = 2016-01-10T10:28:47.218 # Date (julian) = 2457397.93665762 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6495.9719 4.4135161e+10 0.031189833 0.031068537 -36.125517 50.867574 6498.3643 4.4975311e+10 0.037837355 0.031789978 -36.254566 50.750217 6500.7568 5.4494097e+10 0.046551720 0.032511418 -36.381303 50.632868 6503.1493 6.2074622e+10 0.056264536 0.033232859 -36.506262 50.515518 6505.5417 5.8063746e+10 0.065349673 0.033954299 -36.628306 50.398169 6507.9342 5.0718057e+10 0.074267060 0.034675740 -36.750350 50.280820 6510.3266 4.4299456e+10 0.083632226 0.035397180 -36.872392 50.163471 6512.7191 4.0867393e+10 0.094551535 0.036118621 -36.994435 50.046122 6515.1116 3.7814104e+10 0.10635416 0.036840061 -37.116479 49.928772 6517.5040 3.2816528e+10 0.11766074 0.037561502 -37.238523 49.811423 6519.8965 2.7994472e+10 0.12929362 0.038282942 -37.360566 49.694074 6522.2889 2.4752184e+10 0.14156051 0.038992916 -37.482608 49.576725 6524.6814 2.4401376e+10 0.15127866 0.039669034 -37.589444 49.470558 6527.0739 2.3764246e+10 0.15954910 0.040770101 -37.693753 49.366249 6529.4663 2.1491023e+10 0.16535233 0.042978613 -37.804070 49.255932 6531.8588 1.9344429e+10 0.17124765 0.046478666 -37.921419 49.138583 6534.2513 1.7655128e+10 0.17493119 0.048014843 -38.037223 49.021228 6536.6437 1.7116234e+10 0.17695891 0.048366453 -38.149896 48.903861 6539.0362 1.5421746e+10 0.17730137 0.049687424 -38.262565 48.785558 6541.4286 1.3552120e+10 0.17599471 0.051187524 -38.375219 48.663513 6543.8211 1.2140315e+10 0.17342642 0.051597396 -38.487874 48.541797 6546.2136 1.0960606e+10 0.17077449 0.052640256 -38.600529 48.424448 6548.6060 1.0283505e+10 0.16863113 0.053848626 -38.713185 48.307099 6550.9985 9.1284278e+09 0.16642972 0.055235373 -38.825840 48.189750 6553.3910 8.1541521e+09 0.16474788 0.055138541 -38.938494 48.072400 6555.7834 7.4460650e+09 0.16220119 0.054195111 -39.047351 47.955051 6558.1759 6.9402294e+09 0.15982378 0.053089438 -39.155312 47.837702 6560.5683 6.3853784e+09 0.15678287 0.051761881 -39.255130 47.726373 6562.9608 5.8350733e+09 0.15399812 0.049965670 -39.351094 47.617892 6565.3533 5.4377580e+09 0.15111656 0.047917267 -39.450441 47.506911 6567.7457 5.0062307e+09 0.14884277 0.045986662 -39.558404 47.389562 6570.1382 4.6661817e+09 0.14676623 0.044860269 -39.666369 47.272210 6572.5306 4.1875642e+09 0.14477991 0.043926269 -39.774346 47.154844 6574.9231 3.8489975e+09 0.14220102 0.042411640 -39.882222 47.037376 6577.3156 3.6569478e+09 0.13869096 0.039724692 -39.985488 46.915332 6579.7080 3.4889903e+09 0.13481240 0.036681262 -40.088754 46.793288 6582.1005 3.3221003e+09 0.13116415 0.035266449 -40.192022 46.675427 6584.4930 3.0919073e+09 0.12775567 0.034246981 -40.295289 46.558078 6586.8854 2.8700579e+09 0.12440783 0.033159851 -40.398557 46.440729 6589.2779 2.6684054e+09 0.12081541 0.032494696 -40.501825 46.323380 6591.6703 2.4855069e+09 0.11680031 0.028445512 -40.595229 46.211621 6594.0628 2.3413673e+09 0.11317487 0.026138050 -40.682848 46.103141 6596.4553 2.2120857e+09 0.10977417 0.025725204 -40.773026 45.992589 6598.8477 2.0911597e+09 0.10762036 0.025002432 -40.871599 45.875240 6601.2402 1.9582832e+09 0.10761731 0.027158803 -40.970172 45.757406 6603.6326 1.8241827e+09 0.10640698 0.026288749 -41.068744 45.635362 6606.0251 1.7003620e+09 0.10598649 0.027458845 -41.167317 45.513318 6608.4176 1.5839660e+09 0.10343392 0.023721331 -41.265892 45.395841 6610.8100 1.4776632e+09 0.10018081 0.024776946 -41.364467 45.278491 6613.2025 1.3826492e+09 0.098939737 0.023647886 -41.459098 45.161127 6615.5950 1.2984676e+09 0.097389230 0.023269837 -41.552992 45.043761 6617.9874 1.2176110e+09 0.096500951 0.023766624 -41.650218 44.923064 6620.3799 1.1439261e+09 0.095620263 0.024889613 -41.748791 44.801021 6622.7723 1.0730213e+09 0.094061587 0.024552421 -41.838562 44.689299 6625.1648 1.0186804e+09 0.092286084 0.025594263 -41.922009 44.584990 6627.5573 9.7605280e+08 0.089919545 0.025532073 -42.007388 44.477397 6629.9497 9.3158772e+08 0.088278760 0.025937392 -42.101266 44.355355 6632.3422 8.8772455e+08 0.086092533 0.026073376 -42.194887 44.233570 6634.7346 8.3938116e+08 0.084265167 0.026380432 -42.284073 44.116221 6637.1271 7.9327912e+08 0.082363016 0.026099157 -42.373260 43.998872 6639.5196 7.5056420e+08 0.081339359 0.025442368 -42.462445 43.881522 6641.9120 7.0734384e+08 0.081362331 0.025151397 -42.551630 43.764173 6644.3045 6.6759066e+08 0.079998295 0.025376516 -42.644543 43.643095 6646.6970 6.3430083e+08 0.078704791 0.026280915 -42.738422 43.521051 6649.0894 5.9949816e+08 0.077541339 0.027510428 -42.829195 43.402112 6651.4819 5.6595957e+08 0.077495599 0.026853457 -42.918393 43.284745 6653.8743 5.3478044e+08 0.077212420 0.027972069 -43.005080 43.164884 6656.2668 5.0399228e+08 0.075661784 0.028257590 -43.089571 43.042841 6658.6593 4.8045862e+08 0.074249344 0.031230300 -43.175955 42.922691 6661.0517 4.5397927e+08 0.073026545 0.032561296 -43.265142 42.805342 6663.4442 4.2859830e+08 0.071910500 0.032360117 -43.353047 42.687993 6665.8367 3.9691434e+08 0.071977046 0.027176248 -43.437537 42.570643 6668.2291 3.7407987e+08 0.071351943 0.027673523 -43.520691 42.454556 6670.6216 3.5541103e+08 0.071092025 0.027040667 -43.595793 42.346075 6673.0140 3.3885391e+08 0.070830979 0.027480210 -43.670895 42.237593 6675.4065 3.2718477e+08 0.068895530 0.030576950 -43.752999 42.122499 6677.7990 3.0771921e+08 0.067345192 0.031222413 -43.837490 42.005150 6680.1914 2.9353738e+08 0.067540323 0.029482752 -43.921981 41.884914 6682.5839 2.7849458e+08 0.068269344 0.030870652 -44.006473 41.762872 6684.9763 2.6127179e+08 0.068206802 0.032703637 -44.090965 41.643105 6687.3688 2.4705225e+08 0.066093705 0.034137213 -44.175457 41.525755 6689.7613 2.3714189e+08 0.063408643 0.033330761 -44.258289 41.408399 6692.1537 2.2514886e+08 0.062086947 0.032586811 -44.338099 41.291033 6694.5462 2.1276110e+08 0.061035148 0.030495510 -44.417906 41.172616 6696.9387 1.9962500e+08 0.060343129 0.030065777 -44.497703 41.050572 6699.3311 1.8801055e+08 0.058649235 0.031284908 -44.578571 40.927394 6701.7236 1.7977877e+08 0.056513835 0.032471139 -44.669771 40.793278 6704.1160 1.6854759e+08 0.056549392 0.036234534 -44.758349 40.661938 6706.5085 1.5881755e+08 0.056256278 0.039331409 -44.838145 40.539896 6708.9010 1.5149580e+08 0.055441681 0.041024694 -44.917942 40.418321 6711.2934 1.4521241e+08 0.053283835 0.041026068 -44.997741 40.300971 6713.6859 1.4038152e+08 0.050705197 0.046167324 -45.077540 40.183621 6716.0783 1.3259743e+08 0.048435778 0.048516758 -45.152788 40.066272 6718.4708 1.2654094e+08 0.045708825 0.050545663 -45.227891 39.948923 6720.8633 1.2003350e+08 0.045202229 0.050319741 -45.306931 39.827636 6723.2557 1.1308273e+08 0.043694038 0.049511570 -45.386727 39.705592 6725.6482 1.0376352e+08 0.038948150 0.041171124 -45.463199 39.586874 6728.0407 94745344. 0.037523414 0.039685722 -45.538303 39.469525 6730.4331 88771669. 0.035599644 0.040972759 -45.613406 39.352175 6732.8256 85651818. 0.033927846 0.043892195 -45.688510 39.234826 6735.2180 83170882. 0.033981322 0.049524899 -45.768416 39.107571 6737.6105 79836813. 0.035410040 0.056080336 -45.854251 38.968091 6740.0030 75622173. 0.034999964 0.064055425 -45.931085 38.841525 6742.3954 70576392. 0.031426887 0.069574281 -46.001495 38.724176 6744.7879 68412132. 0.026479739 0.078402823 -46.074036 38.606819 6747.1803 65499811. 0.020434569 0.067299074 -46.149151 38.489453 6749.5728 65057262. 0.017192871 0.072121097 -46.222745 38.370576 6751.9653 61326806. 0.0077565021 0.074119794 -46.293154 38.248534 6754.3577 57184267. -0.029183277 0.075638190 -46.366534 38.124165 6756.7502 54132037. -0.0030662691 0.076097274 -46.452368 37.990049 6759.1427 52231954. 0.065541975 0.075854380 -46.533134 37.861442