# # 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 = 50.851499 km # Date (UTC) = 2015-01-30T09:30:56.553 # Date (julian) = 2457052.89648789 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6490.9158 7.9580309e+10 0.024779968 0.029543891 -10.216571 63.666716 6493.2543 7.2300830e+10 0.031979439 0.030249060 -10.633867 63.457174 6495.5928 6.5771701e+10 0.038778550 0.030954230 -10.978840 63.281016 6497.9313 5.9564524e+10 0.045203336 0.031659400 -11.391798 63.066018 6500.2698 5.4492599e+10 0.051300112 0.032364570 -11.741350 62.880613 6502.6083 5.0216526e+10 0.057341977 0.033069740 -12.071689 62.704432 6504.9468 4.7262340e+10 0.063799535 0.033774910 -12.401011 62.528274 6507.2853 4.4330706e+10 0.070847842 0.034480079 -12.716702 62.352073 6509.6238 4.0964650e+10 0.078592283 0.035185249 -13.087923 62.138416 6511.9623 3.7424296e+10 0.087183224 0.035890419 -13.429487 61.941722 6514.3008 3.3845580e+10 0.096735832 0.036595589 -13.737835 61.763671 6516.6393 3.0918619e+10 0.10783602 0.037300759 -14.046182 61.580131 6518.9778 2.8376639e+10 0.12047816 0.038005929 -14.341458 61.396590 6521.3164 2.6008623e+10 0.13459634 0.038711098 -14.635087 61.213072 6523.6549 2.3788814e+10 0.14528949 0.039341417 -14.928693 61.029568 6525.9934 2.1640273e+10 0.15381529 0.039668845 -15.222357 60.846028 6528.3319 1.9637569e+10 0.16353044 0.041705752 -15.504221 60.662488 6530.6704 1.7812433e+10 0.17115846 0.044767201 -15.783174 60.478966 6533.0089 1.6193676e+10 0.17742554 0.047523358 -16.061514 60.295465 6535.3474 1.4710772e+10 0.17925518 0.048073606 -16.333153 60.111925 6537.6859 1.3369259e+10 0.17924087 0.049008588 -16.604793 59.923119 6540.0244 1.2259541e+10 0.17821909 0.050865623 -16.858186 59.745704 6542.3629 1.1336722e+10 0.17516804 0.051140011 -17.078426 59.592759 6544.7014 1.0512033e+10 0.17305477 0.052213333 -17.325073 59.412517 6547.0399 9.7334212e+09 0.17091844 0.053302538 -17.581991 59.224293 6549.3784 8.9183725e+09 0.16866318 0.054351904 -17.838944 59.040749 6551.7169 8.1696879e+09 0.16707858 0.055487397 -18.088593 58.849899 6554.0554 7.5907971e+09 0.16472569 0.054833543 -18.311835 58.679185 6556.3939 7.1039660e+09 0.16259650 0.053955212 -18.519865 58.520100 6558.7324 6.6687042e+09 0.16008704 0.052615191 -18.762029 58.329310 6561.0709 6.2042074e+09 0.15712121 0.051337730 -18.999606 58.138445 6563.4094 5.7490133e+09 0.15460856 0.049454750 -19.223779 57.956305 6565.7479 5.3755313e+09 0.15197232 0.047469107 -19.419548 57.797243 6568.0864 5.0357443e+09 0.15002447 0.045692203 -19.640350 57.617841 6570.4249 4.7508128e+09 0.14794271 0.044741483 -19.862667 57.435827 6572.7634 4.4821510e+09 0.14551841 0.043792948 -20.052319 57.276766 6575.1020 4.2277998e+09 0.14267289 0.042272417 -20.261648 57.097239 6577.4405 3.9616155e+09 0.13940831 0.039528520 -20.481897 56.906356 6579.7790 3.6781906e+09 0.13603775 0.036642267 -20.702145 56.715475 6582.1175 3.4285755e+09 0.13273555 0.035261829 -20.888621 56.548242 6584.4560 3.2428281e+09 0.12936452 0.034267126 -21.070391 56.384822 6586.7945 3.0961001e+09 0.12636492 0.033161026 -21.247806 56.225758 6589.1330 2.9386623e+09 0.12388723 0.032782157 -21.443504 56.046031 6591.4715 2.7794527e+09 0.12136354 0.028669895 -21.639223 55.862535 6593.8100 2.6223373e+09 0.11916306 0.026349177 -21.810521 55.697355 6596.1485 2.4717880e+09 0.11647176 0.025726599 -22.004187 55.515399 6598.4870 2.3348729e+09 0.11464274 0.025174655 -22.198003 55.331998 6600.8255 2.2069941e+09 0.11440427 0.026686955 -22.363151 55.166850 6603.1640 2.1107882e+09 0.11327881 0.026566182 -22.528320 55.005692 6605.5025 2.0163927e+09 0.11246639 0.027086610 -22.694044 54.845799 6607.8410 1.9156437e+09 0.11041960 0.024046306 -22.884926 54.647578 6610.1795 1.8119483e+09 0.10719316 0.024174506 -23.054836 54.471134 6612.5180 1.7115714e+09 0.10506641 0.023933704 -23.213898 54.306103 6614.8565 1.6356261e+09 0.10369094 0.023350377 -23.372960 54.147039 6617.1950 1.5493623e+09 0.10213597 0.023503912 -23.541550 53.972725 6619.5335 1.4617492e+09 0.10131038 0.024654648 -23.724206 53.775456 6621.8720 1.3786492e+09 0.099991491 0.024800404 -23.877151 53.610275 6624.2105 1.3078208e+09 0.097776020 0.024975015 -24.030095 53.445096 6626.5491 1.2467980e+09 0.095809120 0.025891361 -24.183039 53.279918 6628.8876 1.1911608e+09 0.093907213 0.026063452 -24.331344 53.119377 6631.2261 1.1293450e+09 0.091720361 0.025953729 -24.481800 52.955473 6633.5646 1.0713118e+09 0.089767529 0.026250820 -24.657958 52.757297 6635.9031 1.0167835e+09 0.087738864 0.026535217 -24.807127 52.584241 6638.2416 9.6522237e+08 0.086431209 0.025661118 -24.947836 52.419061 6640.5801 9.2110119e+08 0.086595058 0.025199679 -25.088545 52.253880 6642.9186 8.8092949e+08 0.086522316 0.025189287 -25.229254 52.088700 6645.2571 8.4427747e+08 0.085596827 0.025572120 -25.369963 51.923523 6647.5956 8.0393368e+08 0.084600793 0.026751362 -25.510672 51.758343 6649.9341 7.6875518e+08 0.083878058 0.026346082 -25.650017 51.593163 6652.2726 7.2962935e+08 0.083460240 0.027325524 -25.784607 51.427983 6654.6111 6.9644825e+08 0.082577541 0.027775889 -25.919198 51.262803 6656.9496 6.6522716e+08 0.080623241 0.028856884 -26.053788 51.097623 6659.2881 6.3171408e+08 0.079094893 0.031774498 -26.182520 50.932474 6661.6266 5.9658637e+08 0.077734399 0.032854100 -26.319173 50.756777 6663.9651 5.6144002e+08 0.076353343 0.032215754 -26.473348 50.558551 6666.3036 5.2977593e+08 0.076475994 0.026967761 -26.602931 50.391945 6668.6421 5.0336391e+08 0.075400895 0.028039015 -26.731404 50.226765 6670.9806 4.7892237e+08 0.075292468 0.026874319 -26.859877 50.061585 6673.3191 4.5825120e+08 0.074748809 0.027936516 -26.984143 49.896407 6675.6576 4.4076523e+08 0.072590887 0.031057989 -27.106497 49.731231 6677.9961 4.2168352e+08 0.071212379 0.030942087 -27.228828 49.566084 6680.3347 4.0849601e+08 0.071378704 0.029513682 -27.351169 49.400923 6682.6732 3.9452656e+08 0.072004209 0.030938862 -27.473524 49.235743 6685.0117 3.7933736e+08 0.071838867 0.032717157 -27.595880 49.070563 6687.3502 3.6900356e+08 0.069727762 0.034147608 -27.717324 48.905382 6689.6887 3.5853251e+08 0.067197223 0.033396109 -27.833562 48.740201 6692.0272 3.4847711e+08 0.066135182 0.032733771 -27.949800 48.571874 6694.3657 3.3599262e+08 0.065422481 0.030748506 -28.066038 48.400577 6696.7042 3.1399810e+08 0.065381526 0.029968360 -28.182276 48.234662 6699.0427 2.9550767e+08 0.064290988 0.031551041 -28.298508 48.069490 6701.3812 2.8051376e+08 0.062582219 0.031968766 -28.414721 47.904343 6703.7197 2.6918777e+08 0.062675530 0.035476150 -28.527215 47.739176 6706.0582 2.5775711e+08 0.062777645 0.038547702 -28.637335 47.573996 6708.3967 2.4378075e+08 0.062422792 0.040475579 -28.747455 47.408816 6710.7352 2.3223242e+08 0.060874487 0.040640404 -28.857576 47.243635 6713.0737 2.1710490e+08 0.058801276 0.043953241 -28.967697 47.078454 6715.4122 2.0622828e+08 0.056667708 0.047800196 -29.077817 46.908951 6717.7507 1.9748681e+08 0.054389052 0.049827833 -29.187496 46.738095 6720.0892 1.8984422e+08 0.052994138 0.050409428 -29.291498 46.572915 6722.4277 1.8472679e+08 0.052560606 0.050076413 -29.395491 46.407749 6724.7662 1.7404881e+08 0.048600117 0.043528076 -29.499473 46.242602 6727.1047 1.6588843e+08 0.046180289 0.040820838 -29.603471 46.077429 6729.4432 1.5951081e+08 0.045305263 0.040749992 -29.707473 45.912249 6731.7818 1.5228131e+08 0.043139013 0.043305856 -29.811475 45.747069 6734.1203 1.4836067e+08 0.041803915 0.049346364 -29.915477 45.581889 6736.4588 1.3893125e+08 0.043381380 0.052089380 -30.019480 45.416710 6738.7973 1.3022477e+08 0.044061600 0.061710405 -30.117983 45.246030 6741.1358 1.2096344e+08 0.042504862 0.066145915 -30.215868 45.076348 6743.4743 1.1560309e+08 0.037853653 0.074246883 -30.313752 44.911168 6745.8128 1.1200988e+08 0.035409198 0.078908572 -30.411624 44.746010 6748.1513 1.0576651e+08 0.030968791 0.067812807 -30.509488 44.580865 6750.4898 1.0317633e+08 0.027966610 0.072840464 -30.607373 44.415686 6752.8283 97268777. 0.024824976 0.073175987 -30.705257 44.250506 6755.1668 95351959. 0.022663337 0.074532216 -30.803141 44.085326 6757.5053 94076750. 0.020424654 0.075206602 -30.896587 43.920145 6759.8438 88225697. 0.020911779 0.076023579 -30.988910 43.754406 6762.1823 88887851. 0.024723993 0.077756763 -31.086795 43.583110 6764.5208 87740272. 0.027602366 0.079508236 -31.181887 43.414605 6766.8593 84090354. 0.027623706 0.081657543 -31.273654 43.249425 6769.1978 82223961. 0.022138141 0.084934070 -31.365406 43.084272 6771.5363 76629396. 0.016872628 0.090605971 -31.459217 42.912941 6773.8748 70897322. 0.011029993 0.096277873 -31.561999 42.714717 6776.2133 67716544. 0.0044750023 0.10194977 -31.655694 42.543750 6778.5518 60727814. -0.0061374703 0.10762168 -31.746297 42.378569 6780.8903 56082176. -0.045715049 0.11329358 -31.831947 42.213388 6783.2289 52181837. -0.022145908 0.11896548 -31.920996 42.044808 6785.5674 49002611. 0.043076733 0.12463738 -32.012763 41.873511