# # 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 = 57.336419 km # Date (UTC) = 2013-01-08T10:38:44.755 # Date (julian) = 2456300.94357356 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6490.0594 9.8674462e+10 0.024947566 0.029285637 92.804741 39.822885 6492.5859 8.3918629e+10 0.033657938 0.030047495 92.893966 39.689049 6495.1124 7.2726138e+10 0.041837605 0.030809353 92.979680 39.555212 6497.6389 6.3854551e+10 0.049486052 0.031571211 93.063947 39.421375 6500.1653 5.6806411e+10 0.056573190 0.032333069 93.151639 39.287537 6502.6918 5.0885945e+10 0.063186010 0.033094928 93.240864 39.153700 6505.2183 4.5788237e+10 0.069542553 0.033856786 93.326752 39.019862 6507.7448 4.1328797e+10 0.075965852 0.034618644 93.411023 38.886024 6510.2713 3.7316354e+10 0.082828419 0.035380502 93.495292 38.748935 6512.7978 3.3707166e+10 0.090527012 0.036142360 93.579559 38.610142 6515.3243 3.0602930e+10 0.099543511 0.036904218 93.663826 38.474513 6517.8508 2.7843635e+10 0.11023046 0.037666076 93.748093 38.340676 6520.3773 2.5334664e+10 0.12278971 0.038427934 93.832360 38.206838 6522.9038 2.3025661e+10 0.13484513 0.039153924 93.916627 38.073001 6525.4303 2.0891222e+10 0.14396408 0.039733105 93.997909 37.939151 6527.9568 1.8933937e+10 0.15351521 0.041411119 94.077233 37.805294 6530.4833 1.7196708e+10 0.16293520 0.044505301 94.159459 37.671448 6533.0098 1.5662542e+10 0.17178523 0.047523748 94.243726 37.537610 6535.5363 1.4297579e+10 0.17616742 0.047991658 94.325171 37.403772 6538.0628 1.3087218e+10 0.17849861 0.049187252 94.404484 37.269935 6540.5893 1.1967986e+10 0.17766132 0.051132492 94.483795 37.136097 6543.1158 1.0966659e+10 0.17483858 0.051412279 94.563104 37.002260 6545.6423 1.0047929e+10 0.17203499 0.052461321 94.642415 36.868422 6548.1688 9.2191733e+09 0.16990719 0.053718045 94.721728 36.734585 6550.6953 8.4746096e+09 0.16764909 0.055159447 94.801039 36.600748 6553.2218 7.8061643e+09 0.16568577 0.055223594 94.880348 36.466912 6555.7483 7.2188951e+09 0.16303517 0.054224655 94.959659 36.333075 6558.2747 6.6785914e+09 0.16067322 0.053005187 95.038972 36.199238 6560.8012 6.1904298e+09 0.15741305 0.051551887 95.115891 36.065400 6563.3277 5.7417136e+09 0.15455330 0.049549250 95.190246 35.931563 6565.8542 5.3425823e+09 0.15168257 0.047348404 95.266906 35.797725 6568.3807 4.9831218e+09 0.14966994 0.045421682 95.346215 35.663888 6570.9072 4.6655941e+09 0.14755281 0.044541706 95.423310 35.530041 6573.4337 4.3777069e+09 0.14505761 0.043309432 95.497676 35.396184 6575.9602 4.1106060e+09 0.14197224 0.041411310 95.572037 35.262335 6578.4867 3.8722731e+09 0.13855833 0.037881041 95.646392 35.128497 6581.0132 3.6347135e+09 0.13495105 0.035592610 95.720746 34.996709 6583.5397 3.4059657e+09 0.13190274 0.034748493 95.795096 34.867830 6586.0662 3.1966097e+09 0.12837142 0.033170440 95.869449 34.736987 6588.5927 3.0009556e+09 0.12518060 0.033181999 95.943804 34.603149 6591.1192 2.8293247e+09 0.12107600 0.029067419 96.016281 34.469311 6593.6457 2.6683846e+09 0.11764312 0.026501930 96.085678 34.335474 6596.1722 2.5125170e+09 0.11419018 0.025726491 96.156866 34.201636 6598.6987 2.3668779e+09 0.11217029 0.025073593 96.231221 34.067798 6601.2252 2.2262455e+09 0.11223079 0.027151733 96.303871 33.933961 6603.7517 2.0842456e+09 0.11115588 0.026218289 96.373267 33.800123 6606.2782 1.9587055e+09 0.11084095 0.027004114 96.440145 33.671143 6608.8047 1.8618211e+09 0.10793134 0.023711096 96.501831 33.552178 6611.3312 1.7809141e+09 0.10479692 0.024747278 96.564239 33.432647 6613.8576 1.7061826e+09 0.10364996 0.023888264 96.638605 33.303748 6616.3841 1.6200094e+09 0.10211058 0.023342590 96.712772 33.174652 6618.9106 1.5311499e+09 0.10141550 0.024458438 96.782169 33.040815 6621.4371 1.4491692e+09 0.10049328 0.024944556 96.851566 32.906977 6623.9636 1.3685005e+09 0.098464794 0.024848836 96.920963 32.773140 6626.4901 1.2940308e+09 0.096857032 0.025966436 96.990326 32.639302 6629.0166 1.2239045e+09 0.095188489 0.026106099 97.054776 32.505464 6631.5431 1.1603900e+09 0.093178062 0.025985936 97.119219 32.371627 6634.0696 1.1079495e+09 0.091268645 0.026331921 97.188555 32.242687 6636.5961 1.0561640e+09 0.089391769 0.026318259 97.257952 32.113808 6639.1226 1.0068027e+09 0.087954752 0.025584253 97.327349 31.980116 6641.6491 9.5657458e+08 0.088268358 0.025150505 97.396746 31.846278 6644.1756 9.0514410e+08 0.086904530 0.025362584 97.461418 31.712441 6646.7021 8.5877811e+08 0.085415455 0.026283573 97.525856 31.578603 6649.2286 8.1654694e+08 0.083965801 0.027318590 97.590299 31.449404 6651.7551 7.7929527e+08 0.083532390 0.027062828 97.654741 31.320524 6654.2816 7.4363412e+08 0.082884352 0.027916270 97.719189 31.187074 6656.8081 7.0890932e+08 0.081051536 0.028732660 97.783638 31.053217 6659.3346 6.7125030e+08 0.079610337 0.031764807 97.852546 30.919378 6661.8611 6.3663852e+08 0.078276420 0.032973509 97.921943 30.785540 6664.3876 6.0604560e+08 0.077213561 0.030788017 97.986957 30.656084 6666.9141 5.7976764e+08 0.077166652 0.027086711 98.051397 30.527203 6669.4406 5.5675861e+08 0.076148896 0.027903224 98.115839 30.394027 6671.9670 5.3136636e+08 0.076151314 0.026879130 98.180281 30.260189 6674.4935 5.0953854e+08 0.075030704 0.029371128 98.240510 30.130561 6677.0200 4.8572072e+08 0.072578101 0.032329730 98.299991 30.001681 6679.5465 4.5984155e+08 0.072424941 0.029816139 98.371258 29.852772 6682.0730 4.3313391e+08 0.073511980 0.030480341 98.444294 29.701415 6684.5995 4.0732601e+08 0.073743839 0.032684515 98.508733 29.572536 6687.1260 3.8946999e+08 0.071987101 0.034272616 98.572928 29.443412 6689.6525 3.7314058e+08 0.069254197 0.033428654 98.632413 29.309574 6692.1790 3.5729446e+08 0.068082134 0.032557452 98.691898 29.175894 6694.7055 3.4353520e+08 0.067241493 0.030272219 98.751378 29.047013 6697.2320 3.2672046e+08 0.066668520 0.030120626 98.810933 28.918133 6699.7585 3.1279197e+08 0.065002049 0.030890554 98.875374 28.789253 6702.2850 2.9759005e+08 0.063315043 0.033104300 98.939816 28.660372 6704.8115 2.8404012e+08 0.063761948 0.036576038 98.999311 28.526549 6707.3380 2.7401179e+08 0.063510278 0.040138410 99.058792 28.392712 6709.8645 2.6307436e+08 0.062672035 0.040582691 99.118286 28.263711 6712.3910 2.5296238e+08 0.060469833 0.042555874 99.177779 28.134811 6714.9175 2.3975037e+08 0.058423079 0.047372384 99.245446 27.982750 6717.4440 2.3019932e+08 0.056234926 0.049846807 99.311751 27.834546 6719.9705 2.1990152e+08 0.054821136 0.050447827 99.371231 27.705666 6722.4970 2.0739373e+08 0.054752658 0.049990832 99.430713 27.576786 6725.0235 1.9642288e+08 0.050446022 0.041561369 99.490197 27.447905 6727.5500 1.8643950e+08 0.049104575 0.040227694 99.549682 27.319025 6730.0764 1.8462704e+08 0.047830250 0.040483720 99.609167 27.190144 6732.6029 1.8157404e+08 0.046144340 0.043851209 99.669062 27.057763 6735.1294 1.7433733e+08 0.046267155 0.049430840 99.731376 26.904802 6737.6559 1.6406315e+08 0.048159170 0.056225058 99.792614 26.760997 6740.1824 1.5352255e+08 0.048113175 0.064362010 99.852098 26.632116 6742.7089 1.4615667e+08 0.044776534 0.070338180 99.911583 26.503236 6745.2354 1.3980186e+08 0.040930983 0.078665855 99.971067 26.374357 6747.7619 1.3433199e+08 0.036517428 0.067098863 100.03153 26.239116 6750.2884 1.3047461e+08 0.033756366 0.072496606 100.09385 26.091821 6752.8149 1.2636423e+08 0.030786637 0.073191477 100.15164 25.955212 6755.3414 1.2143475e+08 0.028483649 0.074455662 100.20617 25.826331 6757.8679 1.1262204e+08 0.026831560 0.074106216 100.26827 25.683895 6760.3944 1.0620279e+08 0.027424966 0.076813362 100.33625 25.530934 6762.9209 1.0275065e+08 0.032365412 0.076565375 100.39350 25.397183 6765.4474 99902046. 0.034965503 0.079612865 100.44802 25.268303 6767.9739 98909992. 0.032487400 0.080885272 100.50255 25.139423 6770.5004 94894352. 0.027082870 0.088093333 100.55708 25.010542 6773.0269 92505785. 0.022382973 0.094221195 100.61755 24.867611 6775.5534 88574920. 0.017665696 0.10034906 100.67987 24.720316 6778.0799 84699752. 0.012933927 0.10647692 100.74218 24.573020 6780.6064 80809092. 0.0081849626 0.11260478 100.80269 24.430010 6783.1329 78733307. 0.0034596453 0.11873265 100.85722 24.301130 6785.6593 74017584. -0.0013445423 0.12486051 100.91342 24.168286 6788.1858 70171579. -0.0061603151 0.13098837 100.97574 24.020991 6790.7123 69203757. -0.010888940 0.13711623 101.03455 23.881977 6793.2388 70161098. -0.015541267 0.14324410 101.08909 23.753077 6795.7653 67941614. -0.020365370 0.14937196 101.14454 23.616211 6798.2918 64388662. -0.025353836 0.15549982 101.20119 23.468916 6800.8183 58791060. -0.030665010 0.16162768 101.26162 23.321621 6803.3448 55896827. -0.036022633 0.16775555 101.32394 23.174326 6805.8713 55442705. -0.041478524 0.17388341 101.38113 23.027053 6808.3978 50391709. -0.048412750 0.18001127 101.43749 22.882984 6810.9243 51425790. -0.056645672 0.18613913 101.49202 22.759043 6813.4508 50069346. -0.085591862 0.19226700 101.54681 22.632293 6815.9773 48498490. -0.069796925 0.19839486 101.60346 22.484999 6818.5038 44758000. -0.027307567 0.20452272 101.66212 22.337704