# # 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 = 41.888922 km # Date (UTC) = 2015-12-09T09:56:05.588 # Date (julian) = 2457365.91395356 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6491.7064 1.5006253e+11 0.022836874 0.029782284 -26.788661 53.545963 6493.6221 1.3648583e+11 0.028584834 0.030359969 -26.895572 53.469121 6495.5378 1.2010174e+11 0.034160068 0.030937654 -27.000843 53.392279 6497.4536 1.0536056e+11 0.039472302 0.031515340 -27.104412 53.315437 6499.3693 9.4100651e+10 0.044670335 0.032093025 -27.207982 53.238595 6501.2850 8.4194264e+10 0.049934540 0.032670710 -27.316125 53.155100 6503.2008 7.5063069e+10 0.055399217 0.033248395 -27.428884 53.064892 6505.1165 6.6357625e+10 0.061127253 0.033826081 -27.541644 52.974684 6507.0323 5.8835366e+10 0.067332292 0.034403766 -27.646721 52.895658 6508.9480 5.2900750e+10 0.074391794 0.034981451 -27.750305 52.818806 6510.8637 4.8375055e+10 0.082575780 0.035559137 -27.853889 52.741954 6512.7795 4.4848358e+10 0.092061098 0.036136822 -27.951818 52.665110 6514.6952 4.1682860e+10 0.10271186 0.036714507 -28.048705 52.588269 6516.6109 3.8860429e+10 0.11447526 0.037292192 -28.145592 52.511427 6518.5267 3.6171151e+10 0.12718742 0.037869878 -28.245324 52.431740 6520.4424 3.3598032e+10 0.14063480 0.038447563 -28.345553 52.351556 6522.3581 3.1201573e+10 0.15363292 0.039011035 -28.445781 52.271373 6524.2739 2.8913034e+10 0.16251452 0.039524257 -28.543143 52.194057 6526.1896 2.6796334e+10 0.16909039 0.039866878 -28.640032 52.117215 6528.1054 2.4863756e+10 0.17488177 0.041526061 -28.736920 52.040373 6530.0211 2.3077326e+10 0.17840199 0.043858222 -28.833819 51.960632 6531.9368 2.1401916e+10 0.17945067 0.046592241 -28.930720 51.880439 6533.8526 1.9733497e+10 0.17906532 0.047881901 -29.027621 51.800246 6535.7683 1.8124040e+10 0.17779746 0.047891012 -29.121596 51.722977 6537.6840 1.6632995e+10 0.17783626 0.049007718 -29.215142 51.646135 6539.5998 1.5308669e+10 0.17693185 0.050369638 -29.308688 51.569293 6541.5155 1.4132414e+10 0.17493054 0.051159353 -29.402235 51.489513 6543.4312 1.3018519e+10 0.17318681 0.051495076 -29.495783 51.409330 6545.3470 1.1977519e+10 0.17178577 0.052458676 -29.589330 51.329146 6547.2627 1.1035015e+10 0.17034752 0.053387272 -29.679917 51.248964 6549.1785 1.0180605e+10 0.16840259 0.054148141 -29.770123 51.168782 6551.0942 9.4313404e+09 0.16688775 0.055268814 -29.860329 51.088599 6553.0099 8.7602874e+09 0.16577771 0.055330076 -29.953528 51.011389 6554.9257 8.1980044e+09 0.16404733 0.054851805 -30.047087 50.934535 6556.8414 7.6788750e+09 0.16169521 0.053889424 -30.140646 50.857682 6558.7571 7.1370256e+09 0.15902259 0.052594129 -30.241337 50.768810 6560.6729 6.5665850e+09 0.15640612 0.051667626 -30.342820 50.678604 6562.5886 6.0126428e+09 0.15393580 0.050319818 -30.440803 50.590798 6564.5043 5.5494304e+09 0.15101959 0.048543027 -30.527668 50.510614 6566.4201 5.1761817e+09 0.14815024 0.046945243 -30.614533 50.430430 6568.3358 4.8589172e+09 0.14566347 0.045462962 -30.701398 50.351070 6570.2516 4.5574327e+09 0.14363100 0.044813305 -30.788263 50.274228 6572.1673 4.2938439e+09 0.14158905 0.044134350 -30.875128 50.197386 6574.0830 4.0496149e+09 0.13923935 0.042815126 -30.961996 50.119696 6575.9988 3.8265737e+09 0.13729236 0.041372630 -31.048873 50.039503 6577.9145 3.6121248e+09 0.13538336 0.038783908 -31.135749 49.959310 6579.8302 3.4085591e+09 0.13320121 0.036614077 -31.222623 49.879119 6581.7460 3.2249012e+09 0.13104729 0.035370717 -31.309487 49.798936 6583.6617 3.0530077e+09 0.12907846 0.034686736 -31.396351 49.718753 6585.5775 2.8910453e+09 0.12716521 0.033509115 -31.482323 49.638569 6587.4932 2.7305814e+09 0.12551958 0.033267641 -31.565847 49.558385 6589.4089 2.5808576e+09 0.12348041 0.032234709 -31.649371 49.478202 6591.3247 2.4465546e+09 0.12093143 0.028835568 -31.732895 49.398018 6593.2404 2.3274391e+09 0.11865484 0.026878724 -31.816419 49.317836 6595.1561 2.2244392e+09 0.11597868 0.025639763 -31.899943 49.237654 6597.0719 2.1229958e+09 0.11316073 0.025700048 -31.986400 49.154655 6598.9876 2.0094328e+09 0.11090436 0.024935647 -32.080366 49.064447 6600.9033 1.8898392e+09 0.11049682 0.026846981 -32.174333 48.974239 6602.8191 1.7758237e+09 0.10916230 0.026817663 -32.259754 48.890244 6604.7348 1.6725484e+09 0.10773801 0.026507586 -32.339948 48.810051 6606.6506 1.5839132e+09 0.10624487 0.026334940 -32.420142 48.729859 6608.5663 1.4986424e+09 0.10310720 0.023717399 -32.500329 48.651769 6610.4820 1.4249856e+09 0.099850853 0.024463544 -32.580512 48.574927 6612.3978 1.3628971e+09 0.097798361 0.024023559 -32.660694 48.498085 6614.3135 1.3070361e+09 0.096625645 0.023724504 -32.740877 48.419123 6616.2292 1.2496695e+09 0.095288055 0.023318277 -32.821061 48.338939 6618.1450 1.1884161e+09 0.094951322 0.023880268 -32.901244 48.258756 6620.0607 1.1307781e+09 0.094501141 0.024786761 -32.979284 48.178573 6621.9764 1.0821638e+09 0.093456488 0.024765800 -33.056126 48.098391 6623.8922 1.0382023e+09 0.091775183 0.024822365 -33.132968 48.018208 6625.8079 9.9122295e+08 0.090905860 0.026361694 -33.218483 47.931518 6627.7237 9.4235163e+08 0.089312288 0.025596347 -33.308705 47.841297 6629.6394 8.9144035e+08 0.088277738 0.025993501 -33.398926 47.751076 6631.5551 8.4529674e+08 0.086751189 0.025987156 -33.472625 47.670772 6633.4709 8.0928432e+08 0.085502589 0.026234461 -33.546125 47.590589 6635.3866 7.7447773e+08 0.084169943 0.026457764 -33.619626 47.510406 6637.3023 7.3971974e+08 0.082912495 0.026013336 -33.696451 47.430223 6639.2181 7.0830214e+08 0.082008501 0.025550130 -33.773293 47.350040 6641.1338 6.7759485e+08 0.082448753 0.025148755 -33.850135 47.269858 6643.0495 6.5582496e+08 0.081832537 0.025200100 -33.926978 47.189674 6644.9653 6.2948971e+08 0.080763553 0.025447932 -34.003821 47.109491 6646.8810 5.9964824e+08 0.079512547 0.026376192 -34.080730 47.029195 6648.7968 5.6811118e+08 0.078310087 0.027497636 -34.163404 46.939014 6650.7125 5.3581746e+08 0.077828430 0.026418347 -34.246093 46.848808 6652.6282 5.0726044e+08 0.077337316 0.027423373 -34.325587 46.762087 6654.5440 4.7903913e+08 0.076439971 0.027804490 -34.399098 46.681893 6656.4597 4.5303633e+08 0.074881762 0.028426897 -34.472610 46.601698 6658.3754 4.3346033e+08 0.073771736 0.030726930 -34.544930 46.521509 6660.2912 4.1748310e+08 0.072731572 0.031890663 -34.615090 46.441326 6662.2069 4.0082079e+08 0.071612162 0.032928181 -34.685249 46.361144 6664.1227 3.8069331e+08 0.070637092 0.031757316 -34.759947 46.277331 6666.0384 3.5915378e+08 0.070946462 0.026916075 -34.842638 46.187122 6667.9541 3.3653894e+08 0.070534384 0.027453924 -34.925329 46.096914 6669.8699 3.2143796e+08 0.070062368 0.027462296 -34.999228 46.011396 6671.7856 3.0778241e+08 0.069982537 0.026876544 -35.069388 45.927872 6673.7013 2.9578091e+08 0.069454564 0.028508112 -35.139547 45.844348 6675.6171 2.8733993e+08 0.067667474 0.030980272 -35.209714 45.763184 6677.5328 2.7174024e+08 0.066436218 0.031600778 -35.279883 45.682991 6679.4485 2.5982576e+08 0.066249884 0.029897116 -35.350052 45.602798 6681.3643 2.4700308e+08 0.067169273 0.029936828 -35.423802 45.515438 6683.2800 2.3884549e+08 0.067626343 0.031598947 -35.498975 45.425230 6685.1958 2.2612587e+08 0.067491620 0.032911600 -35.573872 45.335575 6687.1115 2.1326048e+08 0.065938117 0.034280721 -35.644032 45.255391 6689.0272 2.0396404e+08 0.063407669 0.033991517 -35.714192 45.175207 6690.9430 1.9640432e+08 0.062661802 0.033007799 -35.784663 45.094401 6692.8587 1.9159282e+08 0.061909350 0.031768173 -35.859836 45.004195 6694.7744 1.8028248e+08 0.061361909 0.030175615 -35.935009 44.913989 6696.6902 1.7064427e+08 0.061072223 0.029962538 -36.006828 44.827806 6698.6059 1.6081760e+08 0.060231437 0.031049496 -36.073647 44.747623 6700.5216 1.5710741e+08 0.058834886 0.031054637 -36.140467 44.667439 6702.4374 1.5170896e+08 0.058066796 0.033225981 -36.210697 44.583163 6704.3531 1.4481432e+08 0.058508140 0.036350953 -36.285870 44.492957 6706.2689 1.3568155e+08 0.058641273 0.038914325 -36.361043 44.402750 6708.1846 1.2505155e+08 0.058581941 0.040244591 -36.427477 44.320031 6710.1003 1.2011323e+08 0.057672473 0.040516133 -36.490963 44.239836 6712.0161 1.1851325e+08 0.055861988 0.041859785 -36.554450 44.159642 6713.9318 1.1524865e+08 0.054105138 0.047056747 -36.626760 44.071887 6715.8475 1.1427021e+08 0.052719121 0.048245425 -36.701933 43.981681 6717.7633 1.0974244e+08 0.051031134 0.049827056 -36.776751 43.891474 6719.6790 1.0228011e+08 0.049862671 0.050724729 -36.848165 43.801266 6721.5947 95398079. 0.050313871 0.050483099 -36.919578 43.711059 6723.5105 90344214. 0.049063757 0.049653650 -36.987548 43.625201 6725.4262 88668975. 0.045337451 0.041309781 -37.051027 43.545018 6727.3420 85658376. 0.044306332 0.040504802 -37.114506 43.464834 6729.2577 82254263. 0.043974843 0.040873668 -37.181483 43.378575 6731.1734 79449067. 0.042517283 0.042095183 -37.252896 43.284609 6733.0892 79826826. 0.041592991 0.044408418 -37.324310 43.190643 6735.0049 76033679. 0.041894893 0.049298638 -37.392792 43.099610 6736.9206 69543440. 0.043667239 0.053835539 -37.460447 43.009403 6738.8364 61085346. 0.044742839 0.061925728 -37.527604 42.920396 6740.7521 60383967. 0.044071739 0.065335218 -37.591090 42.840202 6742.6678 57369822. 0.041565859 0.070238093 -37.654576 42.760007 6744.5836 53964922. 0.038413097 0.078244801 -37.718592 42.678542 6746.4993 52368658. 0.036183879 0.073182093 -37.786247 42.588335 6748.4151 47927182. 0.034776448 0.069200541 -37.853903 42.498129 6750.3308 48631537. 0.033722006 0.072568979 -37.921559 42.407922 6752.2465 50231796. 0.029426246 0.073849192 -37.989214 42.317714 6754.1623 51925949. 0.025405272 0.075952523 -38.056870 42.227506