# # 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 = 54.910774 km # Date (UTC) = 2014-12-25T08:57:22.551 # Date (julian) = 2457016.87317768 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6499.8542 4.7137580e+10 0.044998806 0.032239230 -14.767541 49.293298 6502.3551 4.3870868e+10 0.053772052 0.032993379 -14.888256 49.184688 6504.8560 4.0377626e+10 0.062738286 0.033747528 -15.015832 49.066924 6507.3569 3.6998080e+10 0.071992322 0.034501676 -15.139695 48.951446 6509.8579 3.3866441e+10 0.081641409 0.035255825 -15.253095 48.842408 6512.3588 3.1177988e+10 0.091865878 0.036009974 -15.366494 48.733371 6514.8597 2.8772452e+10 0.10270072 0.036764123 -15.475667 48.628560 6517.3607 2.6518375e+10 0.11412244 0.037518271 -15.584704 48.523885 6519.8616 2.4446195e+10 0.12621394 0.038272420 -15.693742 48.419209 6522.3625 2.2528882e+10 0.13798491 0.039012182 -15.802780 48.314532 6524.8635 2.0792181e+10 0.14504170 0.039733706 -15.911823 48.209850 6527.3644 1.9135333e+10 0.15040681 0.040981015 -16.020875 48.105159 6529.8653 1.7595599e+10 0.15554175 0.043614148 -16.129927 48.000073 6532.3662 1.6188443e+10 0.15989498 0.046990147 -16.238965 47.891035 6534.8672 1.4893264e+10 0.16304487 0.048187139 -16.348002 47.781997 6537.3681 1.3718873e+10 0.16518536 0.048858769 -16.453559 47.676441 6539.8690 1.2667426e+10 0.16760472 0.050695565 -16.558235 47.571766 6542.3700 1.1723019e+10 0.16782532 0.051142695 -16.662911 47.467090 6544.8709 1.0850936e+10 0.16803942 0.052350829 -16.767587 47.362413 6547.3718 1.0021504e+10 0.16687641 0.053428760 -16.872266 47.256806 6549.8727 9.2562864e+09 0.16548039 0.054855679 -16.976956 47.147753 6552.3737 8.5571367e+09 0.16357843 0.055492712 -17.081646 47.038701 6554.8746 7.9431297e+09 0.16162806 0.054850734 -17.182309 46.933677 6557.3755 7.3942401e+09 0.15943854 0.053630720 -17.282624 46.829001 6559.8765 6.8816720e+09 0.15713772 0.052288253 -17.382939 46.721589 6562.3774 6.4092480e+09 0.15451169 0.050520798 -17.483253 46.612551 6564.8783 5.9701132e+09 0.15233111 0.048373540 -17.583568 46.504972 6567.3793 5.5740160e+09 0.15055074 0.046296518 -17.683883 46.400296 6569.8802 5.2190592e+09 0.14933128 0.044909711 -17.784199 46.295436 6572.3811 4.8919033e+09 0.14785719 0.044011902 -17.884527 46.186384 6574.8820 4.5862136e+09 0.14597464 0.042431362 -17.984855 46.077332 6577.3830 4.2987125e+09 0.14364662 0.039618814 -18.081904 45.971559 6579.8839 4.0276592e+09 0.14114670 0.036584577 -18.177857 45.866884 6582.3848 3.7842359e+09 0.13875986 0.035189071 -18.273810 45.762208 6584.8858 3.5606195e+09 0.13647230 0.034033003 -18.369764 45.657531 6587.3867 3.3572306e+09 0.13400745 0.033244045 -18.465717 45.552140 6589.8876 3.1730646e+09 0.13127160 0.031285018 -18.561670 45.443102 6592.3886 2.9961188e+09 0.12777272 0.027696125 -18.657623 45.334064 6594.8895 2.8072005e+09 0.12431676 0.025684241 -18.764039 45.217412 6597.3904 2.6255641e+09 0.12043289 0.025599529 -18.872004 45.099633 6599.8913 2.4534927e+09 0.11831873 0.024983340 -18.966325 44.989138 6602.3923 2.3063568e+09 0.11705359 0.027181887 -19.057917 44.880101 6604.8932 2.1848267e+09 0.11585157 0.026601628 -19.149509 44.773420 6607.3941 2.0692651e+09 0.11455827 0.024928740 -19.241100 44.668743 6609.8951 1.9617013e+09 0.11151488 0.023971806 -19.332691 44.562986 6612.3960 1.8616195e+09 0.10931763 0.024024885 -19.424284 44.453948 6614.8969 1.7664889e+09 0.10835058 0.023322552 -19.515876 44.344910 6617.3978 1.6743583e+09 0.10713884 0.023571154 -19.607479 44.240024 6619.8988 1.5911141e+09 0.10657413 0.024742774 -19.699082 44.135333 6622.3997 1.5107473e+09 0.10519547 0.024651604 -19.787789 44.027762 6624.9006 1.4433843e+09 0.10342600 0.025344415 -19.875019 43.918725 6627.4016 1.3819203e+09 0.10114422 0.025471929 -19.962249 43.811300 6629.9025 1.3238066e+09 0.099583442 0.025945931 -20.049479 43.706624 6632.4034 1.2644992e+09 0.097413614 0.026080719 -20.137547 43.600565 6634.9044 1.1920213e+09 0.095665095 0.026392811 -20.235683 43.477896 6637.4053 1.1234351e+09 0.093832629 0.025962916 -20.333395 43.355927 6639.9062 1.0593692e+09 0.093176490 0.025304174 -20.420626 43.251249 6642.4071 1.0071506e+09 0.092776186 0.025168357 -20.507856 43.146572 6644.9081 9.5857130e+08 0.091215199 0.025441749 -20.595095 43.038631 6647.4090 9.0780141e+08 0.089422988 0.026653121 -20.682336 42.929578 6649.9099 8.6604135e+08 0.087901719 0.026379392 -20.767594 42.822512 6652.4109 8.2923395e+08 0.086637850 0.027363565 -20.850463 42.717837 6654.9118 7.9463586e+08 0.084867395 0.027647794 -20.934998 42.610267 6657.4127 7.5231344e+08 0.082422504 0.029379853 -21.028227 42.487598 6659.9136 7.0471371e+08 0.080784153 0.031644010 -21.120183 42.367139 6662.4146 6.6530254e+08 0.079267196 0.032811668 -21.203051 42.262462 6664.9155 6.3114094e+08 0.078562421 0.028856280 -21.285920 42.157784 6667.4164 6.0026360e+08 0.078148618 0.027256423 -21.368798 42.049476 6669.9174 5.7200939e+08 0.077414051 0.027413502 -21.451677 41.940423 6672.4183 5.4369119e+08 0.077161728 0.027122052 -21.540121 41.826689 6674.9192 5.1592903e+08 0.075746350 0.029730220 -21.633350 41.708928 6677.4202 4.8680282e+08 0.073607430 0.031760921 -21.719224 41.595525 6679.9211 4.6146549e+08 0.073664202 0.029506627 -21.797731 41.486487 6682.4220 4.3940148e+08 0.074466558 0.030746979 -21.876238 41.378351 6684.9229 4.2555751e+08 0.074327994 0.032700927 -21.954746 41.273674 6687.4239 4.1007755e+08 0.072116698 0.034106501 -22.033253 41.168997 6689.9248 3.9022695e+08 0.069568291 0.033183552 -22.120731 41.047874 6692.4257 3.7035324e+08 0.068342004 0.032270949 -22.209052 40.925204 6694.9267 3.5121677e+08 0.067541471 0.029962258 -22.288785 40.818285 6697.4276 3.3729362e+08 0.066709341 0.030145378 -22.367303 40.713595 6699.9285 3.2543155e+08 0.064867037 0.030733671 -22.451542 40.598412 6702.4295 3.0854787e+08 0.063221958 0.033219650 -22.539864 40.475743 6704.9304 2.8957045e+08 0.063486621 0.036634420 -22.620452 40.362890 6707.4313 2.7717723e+08 0.062918811 0.040125041 -22.694597 40.258215 6709.9322 2.6699894e+08 0.061678065 0.040539592 -22.771086 40.148991 6712.4332 2.5976352e+08 0.059173356 0.042634212 -22.854502 40.026321 6714.9341 2.5008286e+08 0.056931747 0.047373634 -22.936863 39.907516 6717.4350 2.3720655e+08 0.054735689 0.049847360 -23.015370 39.802839 6719.9360 2.2684070e+08 0.053281048 0.050480609 -23.093877 39.698163 6722.4369 2.1549003e+08 0.053214484 0.050065095 -23.176910 39.576897 6724.9378 2.0665952e+08 0.049007032 0.042095272 -23.260325 39.454227 6727.4387 1.9528473e+08 0.047456862 0.040375848 -23.339413 39.335881 6729.9397 1.8805854e+08 0.046421827 0.040419108 -23.417933 39.218102 6732.4406 1.8139270e+08 0.044758077 0.043821323 -23.492751 39.107720 6734.9415 1.7280679e+08 0.044729520 0.049296950 -23.566897 38.998682 6737.4425 1.6672614e+08 0.046653485 0.055545054 -23.646174 38.884814 6739.9434 1.5877731e+08 0.046880911 0.063981090 -23.729589 38.767051 6742.4443 1.5042081e+08 0.044007665 0.069693435 -23.810475 38.646758 6744.9453 1.4165508e+08 0.039845209 0.078524543 -23.888983 38.524089 6747.4462 1.3196251e+08 0.035414896 0.067207557 -23.963325 38.410013 6749.9471 1.2326779e+08 0.033165809 0.072018612 -24.033109 38.305337 6752.4480 1.1986101e+08 0.030234936 0.073616005 -24.104505 38.198244 6754.9490 1.1706640e+08 0.028491813 0.074687402 -24.183014 38.080480 6757.4499 1.1505117e+08 0.026157574 0.075374719 -24.261522 37.961996 6759.9508 1.1180121e+08 0.027161749 0.076049406 -24.340031 37.839327 6762.4518 1.0417002e+08 0.031572995 0.077322115 -24.418540 37.717189 6764.9527 98175052. 0.034761956 0.079528926 -24.497060 37.599410 6767.4536 93009560. 0.033886972 0.081467827 -24.575231 37.481283 6769.9546 90482827. 0.028649286 0.086769468 -24.648832 37.358614 6772.4555 89226108. 0.024269168 0.092835322 -24.722596 37.236107 6774.9564 83433019. 0.019944163 0.098901176 -24.801104 37.118344 6777.4573 81948759. 0.015585354 0.10496703 -24.879598 37.000580 6779.9583 81215794. 0.011221728 0.11103288 -24.953239 36.882816 6782.4592 79489317. 0.0068697245 0.11709874 -25.026842 36.765052 6784.9601 75197136. 0.0025441030 0.12316459 -25.100443 36.642593 6787.4611 66345864. -0.0017298939 0.12923044 -25.174045 36.519924 6789.9620 61714068. -0.0060314685 0.13529630 -25.252156 36.401766 6792.4629 59732967. -0.010357006 0.14136215 -25.330664 36.284004 6794.9638 60650641. -0.014719260 0.14742801 -25.400526 36.166241 6797.4648 59565539. -0.019059674 0.15349386 -25.469220 36.048478 6799.9657 55500592. -0.023365999 0.15955971 -25.542052 35.926578 6802.4666 52496842. -0.027688579 0.16562557 -25.615653 35.803909 6804.9676 48610444. -0.032006906 0.17169142 -25.689256 35.685190 6807.4685 47524028. -0.036388770 0.17775727 -25.762859 35.567428 6809.9694 47334407. -0.040809631 0.18382313 -25.840225 35.436757 6812.4704 46214259. -0.045592217 0.18988898 -25.918735 35.302168 6814.9713 45299756. -0.052173158 0.19595484 -25.992426 35.179288 6817.4722 46315705. -0.054755089 0.20202069 -26.066039 35.056601 6819.9731 47220114. -0.055498757 0.20808654 -26.134998 34.938574