# # 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 = 34.427866 km # Date (UTC) = 2016-12-05T09:00:22.543 # Date (julian) = 2457727.87526091 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6489.5460 1.1464272e+11 0.024921403 0.029130828 -11.971565 54.810411 6491.6479 9.6640067e+10 0.032194700 0.029764666 -12.096199 54.726100 6493.7499 8.5274608e+10 0.038656179 0.030398505 -12.214914 54.641779 6495.8518 7.6356930e+10 0.044582040 0.031032343 -12.332233 54.557457 6497.9538 7.0496741e+10 0.049830992 0.031666182 -12.451079 54.472277 6500.0557 6.4384893e+10 0.054734994 0.032300020 -12.587171 54.377426 6502.1577 5.8622326e+10 0.059291240 0.032933859 -12.723263 54.282574 6504.2597 5.3430465e+10 0.063771339 0.033567697 -12.847019 54.194643 6506.3616 4.8632223e+10 0.068487355 0.034201536 -12.964322 54.110332 6508.4636 4.4811567e+10 0.074002997 0.034835375 -13.081625 54.026020 6510.5655 4.1246711e+10 0.080635627 0.035469213 -13.195523 53.941709 6512.6675 3.7838991e+10 0.088630880 0.036103052 -13.309160 53.857398 6514.7694 3.4633166e+10 0.098299756 0.036736890 -13.422800 53.772349 6516.8714 3.1764035e+10 0.10986357 0.037370729 -13.536452 53.684360 6518.9733 2.9098649e+10 0.12328642 0.038004567 -13.650105 53.596370 6521.0753 2.6564024e+10 0.13836227 0.038638406 -13.770470 53.505135 6523.1772 2.3938714e+10 0.15120301 0.039223041 -13.898314 53.410283 6525.2792 2.1451345e+10 0.16226124 0.039750351 -14.025297 53.315939 6527.3811 1.9317925e+10 0.17132449 0.040993188 -14.135268 53.231628 6529.4831 1.7578776e+10 0.17727429 0.043005321 -14.245239 53.147317 6531.5851 1.6178099e+10 0.18053162 0.046080233 -14.355210 53.061831 6533.6870 1.4890189e+10 0.18124460 0.047811545 -14.465182 52.973854 6535.7890 1.3719088e+10 0.17987480 0.047882049 -14.575153 52.885876 6537.8909 1.2615032e+10 0.17984698 0.049105252 -14.682954 52.800070 6539.9929 1.1598310e+10 0.17920168 0.050845470 -14.789259 52.715758 6542.0948 1.0648694e+10 0.17661328 0.051038238 -14.895565 52.631447 6544.1968 9.7945174e+09 0.17449391 0.051803977 -15.001883 52.543958 6546.2987 9.0722949e+09 0.17242860 0.052710333 -15.108203 52.455970 6548.4007 8.3645157e+09 0.17084419 0.053787304 -15.216336 52.367045 6550.5026 7.6569176e+09 0.16920623 0.055111216 -15.335932 52.272193 6552.6046 6.9657581e+09 0.16756686 0.055434591 -15.455528 52.177341 6554.7065 6.3349166e+09 0.16541598 0.054847207 -15.563055 52.087382 6556.8085 5.8400136e+09 0.16284981 0.053894261 -15.665695 51.999405 6558.9105 5.4065274e+09 0.15963100 0.052463487 -15.768335 51.911427 6561.0124 5.0411123e+09 0.15604482 0.051366567 -15.870975 51.823449 6563.1144 4.7099341e+09 0.15274522 0.049796079 -15.973615 51.735471 6565.2163 4.4046885e+09 0.14916823 0.048072771 -16.075320 51.648429 6567.3183 4.1279721e+09 0.14557819 0.046348085 -16.174308 51.564106 6569.4202 3.8523526e+09 0.14193174 0.044879774 -16.273295 51.479784 6571.5222 3.6019579e+09 0.13825866 0.044360659 -16.372276 51.393532 6573.6241 3.3771959e+09 0.13416004 0.043156634 -16.471250 51.305555 6575.7261 3.1663018e+09 0.13056902 0.041646220 -16.570224 51.217579 6577.8280 2.9544994e+09 0.12755365 0.038919729 -16.679100 51.120801 6579.9300 2.7420372e+09 0.12501111 0.036559241 -16.790448 51.021824 6582.0319 2.5242538e+09 0.12273567 0.035285103 -16.897151 50.928352 6584.1339 2.3354113e+09 0.12049019 0.034442573 -16.996125 50.844041 6586.2359 2.1742961e+09 0.11839164 0.033168247 -17.095099 50.759730 6588.3378 2.0357007e+09 0.11663657 0.033267120 -17.191700 50.673046 6590.4398 1.9166063e+09 0.11413553 0.030244050 -17.287008 50.585069 6592.5417 1.8000816e+09 0.11157141 0.027547359 -17.382317 50.497093 6594.6437 1.6964775e+09 0.10887422 0.025819182 -17.477637 50.409105 6596.7456 1.5993676e+09 0.10586023 0.025723884 -17.572959 50.321115 6598.8476 1.5046961e+09 0.10351051 0.025002505 -17.669771 50.231019 6600.9495 1.4064519e+09 0.10299144 0.026941924 -17.772872 50.132042 6603.0515 1.3053628e+09 0.10162137 0.026632798 -17.875972 50.033065 6605.1534 1.2058242e+09 0.10051970 0.026793761 -17.970284 49.942525 6607.2554 1.1225683e+09 0.098635203 0.025202702 -18.061927 49.854549 6609.3573 1.0546980e+09 0.095110995 0.023812078 -18.153570 49.766573 6611.4593 9.9477372e+08 0.091870033 0.024665562 -18.245213 49.678595 6613.5612 9.4081840e+08 0.090273761 0.023779513 -18.336856 49.590617 6615.6632 8.8390399e+08 0.088275630 0.023271936 -18.432062 49.499220 6617.7652 8.2354125e+08 0.086938635 0.023692934 -18.535161 49.400245 6619.8671 7.6492387e+08 0.085855520 0.024735133 -18.638261 49.301270 6621.9691 7.1095414e+08 0.084489521 0.024768247 -18.727970 49.215279 6624.0710 6.6736503e+08 0.082691658 0.024900325 -18.815959 49.130956 6626.1730 6.3376272e+08 0.081801840 0.026370524 -18.903946 49.046054 6628.2749 5.9747864e+08 0.080643996 0.025814717 -18.991923 48.958077 6630.3769 5.6152507e+08 0.079620886 0.025929230 -19.079900 48.870099 6632.4788 5.2658749e+08 0.078518535 0.026089761 -19.167877 48.782122 6634.5808 4.9943023e+08 0.077451248 0.026369208 -19.255855 48.694146 6636.6827 4.7511278e+08 0.076301683 0.026284617 -19.343832 48.606170 6638.7847 4.4844503e+08 0.075591561 0.025637455 -19.436640 48.510465 6640.8866 4.2213473e+08 0.076458445 0.025162170 -19.531492 48.411488 6642.9886 3.9341975e+08 0.076488239 0.025192152 -19.623420 48.315563 6645.0906 3.6863545e+08 0.075833151 0.025494105 -19.707742 48.227573 6647.1925 3.4792301e+08 0.074946285 0.026539136 -19.792064 48.139584 6649.2945 3.3044197e+08 0.074081792 0.027227788 -19.882179 48.045551 6651.3964 3.1225351e+08 0.073895885 0.026787960 -19.977030 47.946576 6653.4984 2.9146743e+08 0.073635916 0.027780110 -20.070102 47.848979 6655.6003 2.7211675e+08 0.072312567 0.027858270 -20.150748 47.761002 6657.7023 2.5809875e+08 0.070786434 0.029715728 -20.231394 47.673024 6659.8042 2.4919559e+08 0.069252784 0.031666835 -20.313497 47.583590 6661.9062 2.3843834e+08 0.067655089 0.032996488 -20.397808 47.491947 6664.0081 2.2573857e+08 0.066101174 0.032176318 -20.482120 47.400304 6666.1101 2.1229481e+08 0.065975977 0.026930048 -20.570726 47.303753 6668.2120 1.9411377e+08 0.064992775 0.027658418 -20.661453 47.204778 6670.3140 1.8049979e+08 0.064319585 0.027183163 -20.748822 47.108489 6672.4160 1.6665685e+08 0.063725741 0.027120692 -20.825813 47.020500 6674.5179 1.5624203e+08 0.062182251 0.029391678 -20.902803 46.932511 6676.6199 1.4879658e+08 0.059453183 0.032113219 -20.986894 46.838843 6678.7218 1.3732327e+08 0.058037832 0.030453835 -21.077621 46.739869 6680.8238 1.3129852e+08 0.058173271 0.029619302 -21.167084 46.641906 6682.9257 1.2490664e+08 0.058058278 0.031131828 -21.244064 46.553928 6685.0277 1.1773889e+08 0.057109534 0.032734067 -21.321044 46.465950 6687.1296 1.0906152e+08 0.054469375 0.034270606 -21.401528 46.373969 6689.2316 1.0026380e+08 0.050853495 0.033807565 -21.488132 46.274992 6691.3335 95339537. 0.049127168 0.032922571 -21.574736 46.176015 6693.4355 90728756. 0.047407661 0.031454689 -21.652301 46.087370 6695.5374 87203760. 0.046173908 0.029760752 -21.729281 45.999393 6697.6394 84498637. 0.044404183 0.030172182 -21.808294 45.909094 6699.7413 81441199. 0.041070857 0.030906379 -21.894897 45.810117 6701.8433 74839399. 0.033847837 0.032646810 -21.981501 45.711141 6703.9453 67127322. -0.0013555300 0.036040567 -22.064862 45.612166 6706.0472 59236431. 0.026462313 0.038528569 -22.147342 45.513191 6708.1492 55500175. 0.10050450 0.040206012 -22.226511 45.418188