# # 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 = 50.243026 km # Date (UTC) = 2016-01-10T10:54:17.107 # Date (julian) = 2457397.95436467 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6490.8096 8.9774139e+10 0.021744727 0.029511875 92.002266 35.671917 6493.1455 8.0325593e+10 0.028857039 0.030216251 92.074411 35.544777 6495.4814 7.2577012e+10 0.035495448 0.030920627 92.147740 35.416455 6497.8172 6.5650915e+10 0.041771158 0.031625003 92.218507 35.290689 6500.1531 5.9855662e+10 0.047868665 0.032329380 92.287262 35.166931 6502.4890 5.5140900e+10 0.054083353 0.033033756 92.356013 35.041446 6504.8249 5.1050210e+10 0.060710470 0.033738132 92.424758 34.913124 6507.1607 4.7113472e+10 0.067935217 0.034442508 92.494402 34.784802 6509.4966 4.3535767e+10 0.076080983 0.035146884 92.567728 34.656479 6511.8325 3.9905004e+10 0.085179833 0.035851261 92.640921 34.528221 6514.1683 3.6491441e+10 0.095465636 0.036555637 92.705082 34.404482 6516.5042 3.3486059e+10 0.10721713 0.037260013 92.769243 34.280742 6518.8401 3.0637753e+10 0.12034499 0.037964389 92.837219 34.153189 6521.1760 2.8197155e+10 0.13505669 0.038668765 92.905964 34.024867 6523.5118 2.5957754e+10 0.14674424 0.039305970 92.974709 33.899525 6525.8477 2.3905337e+10 0.15612145 0.039685467 93.043454 33.775786 6528.1836 2.1997955e+10 0.16608016 0.041588120 93.110051 33.649900 6530.5195 2.0180631e+10 0.17383301 0.044555926 93.174212 33.521578 6532.8553 1.8474926e+10 0.17961155 0.047398729 93.239686 33.394568 6535.1912 1.6953216e+10 0.18131789 0.048141354 93.308431 33.270829 6537.5271 1.5588215e+10 0.18070967 0.048933718 93.376697 33.146611 6539.8629 1.4344669e+10 0.17941639 0.050688203 93.440858 33.018289 6542.1988 1.3231442e+10 0.17631848 0.051077721 93.505019 32.889967 6544.5347 1.2180226e+10 0.17386191 0.052078100 93.569189 32.765855 6546.8706 1.1247707e+10 0.17152831 0.053180860 93.633359 32.642097 6549.2064 1.0389857e+10 0.16893481 0.054176656 93.697522 32.514959 6551.5423 9.5864450e+09 0.16704088 0.055426110 93.761683 32.386637 6553.8782 8.8494194e+09 0.16451510 0.054893616 93.825844 32.260875 6556.2141 8.1633206e+09 0.16196919 0.053981655 93.890005 32.137135 6558.5499 7.5408804e+09 0.15941858 0.052770698 93.954166 32.013396 6560.8858 6.9595089e+09 0.15611977 0.051475646 94.018327 31.889656 6563.2217 6.4336886e+09 0.15321291 0.049671942 94.081100 31.767800 6565.5575 5.9809059e+09 0.15015565 0.047685296 94.138131 31.653737 6567.8934 5.5966740e+09 0.14760285 0.045861779 94.195162 31.539675 6570.2293 5.2552252e+09 0.14512177 0.044822529 94.254077 31.418453 6572.5652 4.9203336e+09 0.14228234 0.043906501 94.313653 31.294713 6574.9010 4.5950256e+09 0.13907934 0.042422239 94.375789 31.170973 6577.2369 4.2864531e+09 0.13543365 0.039848244 94.439954 31.047234 6579.5728 3.9969625e+09 0.13142498 0.036755614 94.502394 30.921772 6581.9087 3.7195498e+09 0.12770472 0.035321456 94.561971 30.793450 6584.2445 3.4685177e+09 0.12417379 0.034382308 94.621550 30.666013 6586.5804 3.2505306e+09 0.12127105 0.033163793 94.681136 30.542255 6588.9163 3.0507561e+09 0.11896923 0.033073938 94.740722 30.418497 6591.2521 2.8676373e+09 0.11650481 0.028917393 94.800302 30.294757 6593.5880 2.6891320e+09 0.11430776 0.026555542 94.859883 30.171018 6595.9239 2.5185510e+09 0.11151631 0.025719381 94.919460 30.047278 6598.2598 2.3587804e+09 0.10964601 0.025283145 94.979037 29.923539 6600.5956 2.2105571e+09 0.10922957 0.026214394 95.038614 29.796829 6602.9315 2.0697855e+09 0.10842896 0.026721721 95.098191 29.668507 6605.2674 1.9472061e+09 0.10768120 0.026889356 95.154683 29.548731 6607.6033 1.8485355e+09 0.10586072 0.024515794 95.207643 29.438742 6609.9391 1.7569676e+09 0.10267402 0.023984897 95.260681 29.328590 6612.2750 1.6747939e+09 0.10020213 0.024115282 95.320254 29.204858 6614.6109 1.5858928e+09 0.099040507 0.023519625 95.379831 29.081118 6616.9467 1.4987216e+09 0.097503581 0.023430891 95.435610 28.957379 6619.2826 1.4233720e+09 0.096659136 0.024594105 95.490606 28.833641 6621.6185 1.3453479e+09 0.095511585 0.024884445 95.548573 28.709889 6623.9544 1.2733697e+09 0.093373499 0.024845402 95.608159 28.586131 6626.2902 1.2007437e+09 0.091851951 0.026221116 95.665608 28.462382 6628.6261 1.1367374e+09 0.089990551 0.025957302 95.720605 28.338642 6630.9620 1.0778984e+09 0.087939439 0.025930672 95.775600 28.214903 6633.2979 1.0187339e+09 0.086215474 0.026204255 95.830593 28.091163 6635.6337 9.6122775e+08 0.084360181 0.026494825 95.886052 27.967424 6637.9696 9.0530781e+08 0.083114443 0.025686531 95.945633 27.843684 6640.3055 8.5646982e+08 0.083157791 0.025233277 96.005213 27.719945 6642.6413 8.0782853e+08 0.083324303 0.025177941 96.060575 27.596206 6644.9772 7.6257396e+08 0.082628042 0.025449222 96.115568 27.472466 6647.3131 7.1735868e+08 0.081688122 0.026602624 96.170564 27.348727 6649.6490 6.7513312e+08 0.080994239 0.026739124 96.225561 27.224988 6651.9848 6.3695164e+08 0.080727532 0.027238900 96.280557 27.101248 6654.3207 6.0237848e+08 0.080121537 0.027899601 96.335554 26.977509 6656.6566 5.7179101e+08 0.078334179 0.028599695 96.390549 26.853769 6658.9925 5.3834956e+08 0.076829913 0.031821216 96.445542 26.730030 6661.3283 5.1119489e+08 0.075582397 0.032702173 96.499657 26.606290 6663.6642 4.8235606e+08 0.074327118 0.032299147 96.550070 26.482551 6666.0001 4.6297995e+08 0.074243922 0.026908609 96.600533 26.358812 6668.3359 4.4414610e+08 0.073351060 0.027768062 96.655532 26.235054 6670.6718 4.2266591e+08 0.073068968 0.027017390 96.710536 26.111296 6673.0077 4.0364827e+08 0.072739916 0.027470719 96.765531 25.987553 6675.3436 3.8056931e+08 0.070952085 0.030456406 96.820524 25.863814 6677.6794 3.6588228e+08 0.069222869 0.031392329 96.872559 25.743034 6680.0153 3.4716911e+08 0.069392191 0.029444722 96.922971 25.623878 6682.3512 3.3080701e+08 0.070164950 0.030692859 96.975510 25.502596 6684.6871 3.1450320e+08 0.070225319 0.032688957 97.030507 25.378857 6687.0229 3.0015833e+08 0.068595692 0.034330114 97.084211 25.255118 6689.3588 2.8952238e+08 0.065883758 0.033693048 97.134624 25.131378 6691.6947 2.7887062e+08 0.064975901 0.032837366 97.185037 25.007638 6694.0305 2.6843607e+08 0.064128431 0.031218217 97.235449 24.883899 6696.3664 2.5470349e+08 0.064236102 0.029828024 97.285862 24.760159 6698.7023 2.4075646e+08 0.063353045 0.031181791 97.336275 24.640627 6701.0382 2.2768120e+08 0.061690603 0.031465442 97.386687 24.521470 6703.3740 2.1451556e+08 0.061768883 0.034611190 97.446253 24.385931 6705.7099 2.0324420e+08 0.062105976 0.037930679 97.509103 24.244511 6708.0458 1.9219216e+08 0.062036588 0.040093431 97.561672 24.117707 6710.3817 1.8405721e+08 0.060848060 0.040571199 97.612084 23.993968 6712.7175 1.7977930e+08 0.058802855 0.043162165 97.662497 23.873183 6715.0534 1.7503149e+08 0.056832492 0.047433203 97.712910 23.754027 6717.3893 1.6613243e+08 0.054866403 0.049850190 97.761205 23.632741 6719.7251 1.5769044e+08 0.053403992 0.050680899 97.807040 23.508983 6722.0610 1.5049349e+08 0.053720584 0.050529771 97.856186 23.381735 6724.3969 1.4567088e+08 0.050832721 0.046612379 97.913801 23.245553 6726.7328 1.4163103e+08 0.047839047 0.040957976 97.968739 23.113997 6729.0686 1.3263678e+08 0.047619543 0.040999680 98.019151 22.990258 6731.4045 1.2398409e+08 0.045921047 0.042555070 98.069564 22.867388 6733.7404 1.1878289e+08 0.044825736 0.047944048 98.119977 22.748231 6736.0763 1.1671447e+08 0.046414010 0.050643285 98.170344 22.629028 6738.4121 1.1120881e+08 0.047792659 0.059590032 98.216183 22.505299 6740.7480 1.0619501e+08 0.047186734 0.065328189 98.262012 22.381561 6743.0839 97993684. 0.043807112 0.071613232 98.317573 22.247547 6745.4197 94552178. 0.040952319 0.078743343 98.375189 22.111365 6747.7556 94563659. 0.036728308 0.067101031 98.422004 21.986588 6750.0915 92998879. 0.034257825 0.072160353 98.467837 21.862848 6752.4274 90555502. 0.031616061 0.073639939 98.522321 21.729970 6754.7632 82722983. 0.030402523 0.074986094 98.579933 21.593788 6757.0991 76647858. 0.027971717 0.076439292 98.627823 21.471657 6759.4350 73490934. 0.029263470 0.075924922 98.673655 21.352500 6761.7709 72377070. 0.032319980 0.078031912 98.722434 21.230395 6764.1067 72079128. 0.036242522 0.079488398 98.772847 21.106657 6766.4426 70001584. 0.037661432 0.080714912 98.824165 20.977178 6768.7785 67352043. 0.033538626 0.083657146 98.876542 20.840996 6771.1143 65147794. 0.029484010 0.089582473 98.928919 20.704815 6773.4502 61994586. 0.025751622 0.095247991 98.981295 20.568633 6775.7861 61391989. 0.021983750 0.10091351 99.029463 20.440450 6778.1220 58105144. 0.018701548 0.10657903 99.075291 20.316711 6780.4578 53650198. 0.016192450 0.11224455 99.124138 20.187237 6782.7937 48986483. 0.015002530 0.11791006 99.176515 20.051054 6785.1296 43114240. 0.028093036 0.12357558 99.225281 19.924264 6787.4655 44273412. 0.010244501 0.12924110 99.271113 19.805108 6789.8013 46708029. -0.021004654 0.13490662 99.319365 19.679658