# # 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 = 60.016340 km # Date (UTC) = 2012-02-04T10:56:53.678 # Date (julian) = 2455961.95617683 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6514.1357 8.7245344e+10 0.11933195 0.036545794 68.204601 66.528826 6516.7592 7.5087472e+10 0.13180027 0.037336889 68.961400 66.213108 6519.3826 6.5640944e+10 0.14452275 0.038127984 69.692806 65.887783 6522.0061 5.6682517e+10 0.15726934 0.038918839 70.403569 65.561725 6524.6295 4.8936477e+10 0.16318128 0.039650599 71.096490 65.238883 6527.2530 4.2899160e+10 0.16768961 0.040900130 71.770777 64.904609 6529.8764 3.7799450e+10 0.17104425 0.043631851 72.278708 64.650023 6532.4999 3.3905971e+10 0.17325820 0.047101786 72.918753 64.315681 6535.1233 3.0476028e+10 0.17382747 0.048170796 73.450122 64.026890 6537.7468 2.6844739e+10 0.17331476 0.049037301 74.019090 63.712725 6540.3702 2.4046752e+10 0.17291736 0.051029012 74.580899 63.387149 6542.9937 2.1250372e+10 0.17116489 0.051379498 75.054833 63.109739 6545.6171 1.9071786e+10 0.16960041 0.052461096 75.558508 62.804732 6548.2406 1.7250399e+10 0.16842434 0.053739496 75.979884 62.542575 6550.8640 1.5439718e+10 0.16676847 0.055201710 76.468860 62.229239 6553.4875 1.3944141e+10 0.16504696 0.055090006 76.894873 61.946749 6556.1110 1.2671456e+10 0.16196111 0.053996813 77.296411 61.687939 6558.7344 1.1532599e+10 0.15830583 0.052613497 77.679494 61.421437 6561.3579 1.0531006e+10 0.15369199 0.051196334 78.152851 61.086839 6563.9813 9.6322295e+09 0.14915721 0.048793210 78.529266 60.811115 6566.6048 8.8240648e+09 0.14616244 0.046840768 78.889600 60.543442 6569.2282 8.1868008e+09 0.14383960 0.044867278 79.249876 60.272953 6571.8517 7.5380113e+09 0.14226037 0.044270666 79.607048 59.998140 6574.4751 6.9164810e+09 0.13987791 0.042626802 79.953593 59.727057 6577.0986 6.3767748e+09 0.13752266 0.040065524 80.289584 59.452836 6579.7220 5.9254676e+09 0.13467128 0.036673563 80.618993 59.181161 6582.3455 5.5164572e+09 0.13222963 0.035199778 80.948419 58.903207 6584.9689 5.1270415e+09 0.13004263 0.033987692 81.273214 58.625264 6587.5924 4.7842039e+09 0.12777429 0.033289621 81.557971 58.377759 6590.2158 4.4804700e+09 0.12517374 0.030660557 81.821300 58.146829 6592.8393 4.1939945e+09 0.12214826 0.027258308 82.130112 57.868900 6595.4628 3.8945313e+09 0.11891666 0.025671560 82.435657 57.590938 6598.0862 3.6134173e+09 0.11609607 0.025366007 82.710466 57.329533 6600.7097 3.3631778e+09 0.11500534 0.026448807 82.948858 57.092534 6603.3331 3.1357016e+09 0.11333950 0.026466071 83.237126 56.814559 6605.9566 2.9371392e+09 0.11200566 0.027467527 83.512688 56.547313 6608.5800 2.7323892e+09 0.10847799 0.023717036 83.735063 56.324935 6611.2035 2.5701307e+09 0.10420846 0.024828700 84.001365 56.038648 6613.8269 2.4154948e+09 0.10216719 0.023876992 84.223766 55.816232 6616.4504 2.2703244e+09 0.099580028 0.023352986 84.473882 55.549804 6619.0738 2.1366430e+09 0.097965743 0.024543729 84.695732 55.310749 6621.6973 2.0003001e+09 0.096504270 0.024858328 84.936084 55.051429 6624.3207 1.8838261e+09 0.094460421 0.025034000 85.155544 54.803528 6626.9442 1.7766644e+09 0.092721208 0.025387913 85.356659 54.576404 6629.5676 1.6828762e+09 0.091757522 0.026006473 85.568908 54.340458 6632.1911 1.5926642e+09 0.090108682 0.026055260 85.796507 54.067678 6634.8146 1.5101317e+09 0.088741545 0.026386260 85.993999 53.845127 6637.4380 1.4199244e+09 0.087372654 0.025946890 86.183389 53.614570 6640.0615 1.3434502e+09 0.087272113 0.025263132 86.411025 53.337446 6642.6849 1.2647165e+09 0.087342940 0.025179724 86.601374 53.104220 6645.3084 1.1926255e+09 0.086250315 0.025596142 86.782545 52.876760 6647.9318 1.1388871e+09 0.084948423 0.026928387 86.963717 52.646179 6650.5553 1.0738047e+09 0.084074383 0.026382355 87.153646 52.404452 6653.1787 1.0117648e+09 0.083531778 0.027616912 87.368289 52.128950 6655.8022 9.4938618e+08 0.081667183 0.027941678 87.541208 51.898454 6658.4256 8.9048731e+08 0.079766877 0.030815945 87.714167 51.676072 6661.0491 8.4701924e+08 0.077893202 0.032559950 87.880595 51.447163 6663.6725 8.0255089e+08 0.076174022 0.032296836 88.045298 51.216580 6666.2960 7.6295634e+08 0.075805018 0.026966273 88.210000 50.986001 6668.9194 7.3183544e+08 0.074241524 0.028284417 88.374722 50.755388 6671.5429 6.9984695e+08 0.074022859 0.026873085 88.539450 50.524773 6674.1664 6.6936361e+08 0.072806162 0.029095119 88.696426 50.294212 6676.7898 6.3133653e+08 0.070032986 0.032222748 88.888569 50.022006 6679.4133 5.8789165e+08 0.069566310 0.029926274 89.051225 49.783167 6682.0367 5.5116567e+08 0.070793037 0.030452591 89.203870 49.556404 6684.6602 5.2090705e+08 0.071209202 0.032687592 89.357680 49.325828 6687.2836 4.9878673e+08 0.069546127 0.034184724 89.505932 49.095212 6689.9071 4.7949668e+08 0.067175113 0.033199515 89.654185 48.864598 6692.5305 4.6011513e+08 0.066239712 0.032149264 89.802406 48.634034 6695.1540 4.4204137e+08 0.065763946 0.029831190 89.933868 48.429537 6697.7774 4.2752362e+08 0.065154531 0.030189650 90.061062 48.228836 6700.4009 4.1439916e+08 0.063341812 0.030965065 90.201142 47.998224 6703.0243 3.9787468e+08 0.062671001 0.033736132 90.349391 47.767611 6705.6478 3.8104045e+08 0.062911515 0.037820245 90.491084 47.537040 6708.2712 3.6352866e+08 0.062627973 0.040338952 90.626315 47.306449 6710.8947 3.4561320e+08 0.061010859 0.040671621 90.761098 47.075836 6713.5181 3.3066722e+08 0.058633228 0.045560659 90.899867 46.845229 6716.1416 3.1053635e+08 0.056613913 0.048609927 91.031618 46.614669 6718.7651 2.9291924e+08 0.054053494 0.051003930 91.163392 46.384060 6721.3885 2.7578973e+08 0.054429668 0.050420959 91.295172 46.153447 6724.0120 2.5207132e+08 0.052726563 0.049826769 91.426951 45.922833 6726.6354 2.3464229e+08 0.048882484 0.040957098 91.550249 45.703529 6729.2589 2.2103250e+08 0.048450276 0.040872885 91.653178 45.511397 6731.8823 2.1111866e+08 0.046531632 0.043506008 91.780245 45.287074 6734.5058 2.0563595e+08 0.046053339 0.049323168 91.906900 45.056458 6737.1292 1.9696293e+08 0.048376091 0.054547225 92.030430 44.825865 6739.7527 1.8959710e+08 0.049101551 0.063747691 92.152349 44.595297 6742.3761 1.8216398e+08 0.046638609 0.069527274 92.267655 44.364684 6744.9996 1.6910954e+08 0.042813387 0.078566568 92.391032 44.134071 6747.6230 1.5646131e+08 0.039004827 0.067146672 92.508270 43.903457 6750.2465 1.4607131e+08 0.037021676 0.072425031 92.616751 43.694061 6752.8699 1.4246561e+08 0.034518514 0.073127785 92.720844 43.498310 6755.4934 1.3935097e+08 0.032496205 0.074389021 92.836150 43.267698 6758.1169 1.3619068e+08 0.031593202 0.073952426 92.951458 43.037080 6760.7403 1.2933581e+08 0.032656781 0.077473003 93.061267 42.806503 6763.3638 1.2227484e+08 0.038797847 0.077545604 93.172043 42.575921 6765.9872 1.1683334e+08 0.041653570 0.079711413 93.281162 42.354425 6768.6107 1.1136436e+08 0.037721530 0.083053348 93.370382 42.162253 6771.2341 1.1043721e+08 0.032765717 0.089872984 93.479953 41.940092 6773.8576 1.0908310e+08 0.028067218 0.096236012 93.590585 41.709511 6776.4810 1.0613249e+08 0.023426179 0.10259904 93.697641 41.478933 6779.1045 99304665. 0.018993721 0.10896207 93.804710 41.248318 6781.7279 90497969. 0.014686204 0.11532509 93.911779 41.017703 6784.3514 83564266. 0.010225827 0.12168812 94.011226 40.787141 6786.9748 83506242. 0.0051487366 0.12805115 94.103239 40.583791 6789.5983 82299812. 0.00010739786 0.13441418 94.194880 40.381942 6792.2217 80810087. -0.0049711542 0.14077720 94.294027 40.151329 6794.8452 78855701. -0.010066607 0.14714023 94.401095 39.920717 6797.4687 74499460. -0.015069706 0.15350326 94.501365 39.690147 6800.0921 73624489. -0.020325806 0.15986629 94.600193 39.459555 6802.7156 72833201. -0.025625970 0.16622931 94.699027 39.228941 6805.3390 70883756. -0.030935744 0.17259234 94.794882 39.005274 6807.9625 66074327. -0.036256300 0.17895537 94.877243 38.813102 6810.5859 63738218. -0.041728379 0.18531840 94.965549 38.593151 6813.2094 61926037. -0.047270231 0.19168142 95.060329 38.366759 6815.8328 60996738. -0.052840513 0.19804445 95.156730 38.141952 6818.4563 64045099. -0.058252385 0.20440748 95.247994 37.911344 6821.0797 61071180. -0.063916220 0.21077051 95.346807 37.680786 6823.7032 60494768. -0.069466293 0.21713353 95.438502 37.450178 6826.3266 58530901. -0.075146995 0.22349656 95.529101 37.219565 6828.9501 50246823. -0.081794321 0.22985959 95.619700 36.988951 6831.5735 46913964. -0.088052135 0.23622262 95.706912 36.768495 6834.1970 40811019. -0.095346725 0.24258564 95.782393 36.583225 6836.8205 36300387. -0.10285316 0.24894867 95.869465 36.363188 6839.4439 37168578. -0.10835489 0.25531170 95.960060 36.132574 6842.0674 37306286. -0.11419372 0.26167473 96.047862 35.901980 6844.6908 39629890. -0.11904351 0.26803775 96.131233 35.671416 6847.3143 41877151. -0.12409077 0.27440078 96.221831 35.440800 6849.9377 40854152. -0.13104620 0.28076381 96.304935 35.217682 6852.5612 42106568. -0.13758810 0.28712684 96.387296 34.989573 6855.1846 45709600. -0.14421365 0.29348986 96.469648 34.758984 6857.8081 45629329. -0.15701062 0.29985289 96.554194 34.528412 6860.4315 46700017. -0.20904144 0.30621592 96.644357 34.298236 6863.0550 44277446. -0.17309480 0.31257895 96.726718 34.075858 6865.6784 38595797. -0.078082575 0.31894197 96.809062 33.846617