# # 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 = 56.592609 km # Date (UTC) = 2015-12-20T10:22:01.714 # Date (julian) = 2457376.93196428 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.8996 7.5187816e+10 0.022247885 0.030745207 -35.054236 50.484012 6497.2397 6.7547232e+10 0.030662598 0.031450856 -35.164602 50.386054 6499.5798 6.0369830e+10 0.039237247 0.032156506 -35.278871 50.288111 6501.9199 5.5010297e+10 0.048328706 0.032862155 -35.393139 50.190167 6504.2600 5.0631129e+10 0.057997551 0.033567805 -35.505000 50.092222 6506.6001 4.6463584e+10 0.068178184 0.034273455 -35.615188 49.994277 6508.9402 4.2249067e+10 0.078759372 0.034979104 -35.725376 49.896332 6511.2803 3.8084863e+10 0.089759013 0.035684754 -35.835563 49.798387 6513.6204 3.4631919e+10 0.10152851 0.036390403 -35.945751 49.700442 6515.9605 3.1495557e+10 0.11393076 0.037096053 -36.053136 49.605301 6518.3006 2.8900796e+10 0.12710069 0.037801702 -36.159258 49.511425 6520.6407 2.6497414e+10 0.14082030 0.038507352 -36.266352 49.416576 6522.9808 2.4214107e+10 0.15230553 0.039174079 -36.376538 49.318633 6525.3209 2.2237502e+10 0.16035109 0.039745594 -36.486724 49.220689 6527.6610 2.0498137e+10 0.16721563 0.041196341 -36.590473 49.122744 6530.0011 1.8846876e+10 0.17344210 0.043830184 -36.692499 49.024799 6532.3412 1.7378805e+10 0.17769899 0.046969193 -36.792315 48.930169 6534.6813 1.6200798e+10 0.17977800 0.048135130 -36.887810 48.842021 6537.0213 1.5237950e+10 0.17988315 0.048695292 -36.983305 48.753873 6539.3614 1.4394497e+10 0.17860090 0.050081147 -37.082830 48.659685 6541.7015 1.3545401e+10 0.17601527 0.051099026 -37.184869 48.561726 6544.0416 1.2691887e+10 0.17295156 0.051678123 -37.286906 48.463770 6546.3817 1.1859816e+10 0.17034371 0.052778629 -37.388931 48.365827 6548.7218 1.1042271e+10 0.16789709 0.053883208 -37.490957 48.267883 6551.0619 1.0280633e+10 0.16551774 0.055257486 -37.592982 48.169939 6553.4020 9.5246375e+09 0.16349773 0.055132979 -37.695008 48.071993 6555.7421 8.8483334e+09 0.16076561 0.054229813 -37.795952 47.972967 6558.0822 8.2309786e+09 0.15835545 0.053169254 -37.893896 47.870942 6560.4223 7.6380452e+09 0.15524117 0.051893549 -37.991839 47.768916 6562.7624 7.1065918e+09 0.15216816 0.050154454 -38.089795 47.670204 6565.1025 6.6037143e+09 0.14941783 0.048202014 -38.187753 47.572245 6567.4426 6.1553680e+09 0.14689220 0.046242967 -38.285706 47.474292 6569.7827 5.7467240e+09 0.14476695 0.044903365 -38.383652 47.376349 6572.1228 5.3928275e+09 0.14246315 0.044159843 -38.481597 47.278405 6574.4629 5.0281267e+09 0.13957790 0.042632688 -38.575810 47.180460 6576.8030 4.6544581e+09 0.13680491 0.040447157 -38.669674 47.082515 6579.1431 4.3492623e+09 0.13321102 0.036991848 -38.763537 46.984570 6581.4832 4.1098339e+09 0.12999838 0.035450301 -38.857400 46.886627 6583.8233 3.8303366e+09 0.12693607 0.034604971 -38.951264 46.788683 6586.1634 3.5670840e+09 0.12375277 0.033169185 -39.045139 46.690725 6588.5034 3.2525710e+09 0.12126915 0.033211803 -39.139015 46.592766 6590.8435 2.9341304e+09 0.11835374 0.029492944 -39.232884 46.494816 6593.1836 2.7069832e+09 0.11595122 0.026931493 -39.326747 46.396873 6595.5237 2.4827193e+09 0.11348930 0.025677884 -39.420149 46.298929 6597.8638 2.3327279e+09 0.11140343 0.025450135 -39.509932 46.200984 6600.2039 2.1695142e+09 0.11090943 0.025409107 -39.599715 46.103039 6602.5440 2.0599021e+09 0.11017507 0.027052388 -39.692211 46.002381 6604.8841 1.9584384e+09 0.10918279 0.026596235 -39.786086 45.900342 6607.2242 1.8418319e+09 0.10787957 0.025264263 -39.879092 45.799173 6609.5643 1.7258375e+09 0.10478077 0.023873557 -39.968875 45.701230 6611.9044 1.5581792e+09 0.10260339 0.024381715 -40.058658 45.603286 6614.2445 1.4550801e+09 0.10166507 0.023772043 -40.145329 45.505341 6616.5846 1.3573683e+09 0.10027796 0.023374051 -40.231030 45.407396 6618.9247 1.2976295e+09 0.099327238 0.024469045 -40.318004 45.309451 6621.2648 1.2374293e+09 0.098232326 0.025001683 -40.407785 45.211506 6623.6049 1.2004975e+09 0.095973114 0.024715924 -40.497567 45.113560 6625.9450 1.1404820e+09 0.094405957 0.026525242 -40.583844 45.015605 6628.2851 1.0149656e+09 0.092927833 0.025818836 -40.669558 44.917649 6630.6252 9.0512897e+08 0.091606274 0.025929842 -40.755267 44.818018 6632.9653 8.6505423e+08 0.089705638 0.026148088 -40.840968 44.715992 6635.3054 8.4249070e+08 0.087552282 0.026445580 -40.926669 44.613967 6637.6455 8.1064775e+08 0.085709270 0.025845289 -41.008448 44.515863 6639.9855 7.5819260e+08 0.085289191 0.025275818 -41.090069 44.417917 6642.3256 7.0740915e+08 0.085281401 0.025165022 -41.173774 44.319973 6644.6657 7.2947424e+08 0.083759056 0.025415558 -41.259475 44.222029 6647.0058 7.3470307e+08 0.082405951 0.026440851 -41.344930 44.124085 6649.3459 6.9517557e+08 0.081511717 0.027156842 -41.426562 44.026127 6651.6860 6.4589234e+08 0.081364848 0.027009903 -41.508193 43.928169 6654.0261 5.3655023e+08 0.081719124 0.028025099 -41.589818 43.827728 6656.3662 4.8145003e+08 0.080412688 0.028344842 -41.671439 43.725703 6658.7063 4.5260659e+08 0.079059617 0.031313734 -41.753059 43.624330 6661.0464 4.4828014e+08 0.077497230 0.032558585 -41.834679 43.526386 6663.3865 4.9707263e+08 0.075353158 0.032376104 -41.916298 43.428442 6665.7266 4.8159846e+08 0.074999313 0.027356577 -42.005160 43.321808 6668.0667 4.7633972e+08 0.074113910 0.027529792 -42.096984 43.211618 6670.4068 4.5159508e+08 0.073633648 0.027140175 -42.181216 43.107937 6672.7469 4.2518481e+08 0.073364203 0.027312506 -42.258756 43.009992 6675.0870 4.1403837e+08 0.071670810 0.029964951 -42.336297 42.911714 6677.4271 4.0102302e+08 0.069553227 0.031751089 -42.413847 42.809675 6679.7672 3.9514467e+08 0.069309730 0.029633818 -42.491396 42.707636 6682.1073 3.8320458e+08 0.070024522 0.030506497 -42.568938 42.608182 6684.4474 3.6347102e+08 0.070093728 0.032676793 -42.646477 42.510239 6686.7875 3.4740494e+08 0.068611304 0.034219238 -42.725768 42.410081 6689.1276 3.2521982e+08 0.065599144 0.033901209 -42.813003 42.299891 6691.4676 3.0987742e+08 0.064526685 0.032890929 -42.900184 42.189769 6693.8077 2.9521525e+08 0.063470133 0.031326984 -42.977750 42.091790 6696.1478 2.8092136e+08 0.063316525 0.029737209 -43.055289 41.993846 6698.4879 2.7217800e+08 0.062344650 0.030887560 -43.130580 41.893641 6700.8280 2.6503204e+08 0.060530169 0.031281889 -43.204048 41.791602 6703.1681 2.5465932e+08 0.060241747 0.034095931 -43.278454 41.688729 6705.5082 2.4233677e+08 0.060461407 0.037572115 -43.361096 41.578539 6707.8483 2.3128353e+08 0.060229666 0.040065306 -43.443739 41.468349 6710.1884 2.1776410e+08 0.059104061 0.040533373 -43.521664 41.369477 6712.5285 2.0930284e+08 0.056965370 0.042811215 -43.599204 41.271533 6714.8686 1.9829993e+08 0.054942944 0.047368710 -43.676986 41.167786 6717.2087 1.9042073e+08 0.052853488 0.049861360 -43.755037 41.057596 6719.5488 1.8174538e+08 0.051058682 0.050848448 -43.831730 40.951028 6721.8889 1.7572365e+08 0.051358845 0.050571725 -43.905189 40.853085 6724.2290 1.6838124e+08 0.048843160 0.048014520 -43.978647 40.755141 6726.5691 1.6009189e+08 0.045463643 0.040956500 -44.059868 40.642963 6728.9092 1.5151153e+08 0.045087011 0.040916694 -44.142508 40.528183 6731.2493 1.4274918e+08 0.043293391 0.042246113 -44.216304 40.424628 6733.5894 1.3821264e+08 0.042134197 0.047124130 -44.285692 40.326670 6735.9295 1.3261199e+08 0.043588405 0.050280121 -44.356962 40.226053 6738.2696 1.2622687e+08 0.045047495 0.058805108 -44.435012 40.115863 6740.6096 1.1980107e+08 0.044551869 0.065091843 -44.512722 40.006154 6742.9497 1.1348895e+08 0.041239792 0.070924983 -44.582100 39.908210 6745.2898 1.0522125e+08 0.038170870 0.078688733 -44.651478 39.810267 6747.6299 1.0143193e+08 0.034097344 0.067144299 -44.725963 39.702408 6749.9700 92819103. 0.032056203 0.072012338 -44.804012 39.587628 6752.3101 88434614. 0.029618058 0.073775603 -44.882063 39.474733 6754.6502 85517037. 0.028532511 0.075167833 -44.960115 39.364543 6756.9903 80276919. 0.026098147 0.076715140 -45.035198 39.257203 6759.3304 80525995. 0.027595556 0.075899688 -45.100494 39.159259 6761.6705 76744153. 0.030705614 0.078023622 -45.165791 39.061315 6764.0106 73357375. 0.035322519 0.079483794 -45.241074 38.953777 6766.3507 71049763. 0.037203486 0.080507034 -45.319136 38.843570 6768.6908 68348670. 0.033493959 0.083341665 -45.394415 38.733375 6771.0309 70560349. 0.029341479 0.089380060 -45.467874 38.623187 6773.3710 74030237. 0.025323838 0.095055821 -45.541334 38.512998 6775.7111 73827341. 0.021480402 0.10073158 -45.614793 38.402808 6778.0512 70998861. 0.017784438 0.10640734 -45.688253 38.291477 6780.3913 64833779. 0.014352356 0.11208310 -45.761715 38.176696 6782.7314 60795745. 0.010857949 0.11775886 -45.835176 38.062238 6785.0715 59697729. 0.0071532288 0.12343462 -45.908636 37.952050 6787.4116 58571986. 0.0034715109 0.12911038 -45.982095 37.841861 6789.7517 58576576. -0.00030498604 0.13478614 -46.051457 37.731672 6792.0917 55949733. -0.0037308394 0.14046190 -46.120324 37.621482 6794.4318 54400142. -0.0071839223 0.14613766 -46.192471 37.511291 6796.7719 54415485. -0.010725106 0.15181342 -46.265931 37.401101 6799.1120 51281297. -0.013521227 0.15748918 -46.336929 37.290912 6801.4521 51012496. -0.016377250 0.16316494 -46.405798 37.180724 6803.7922 48194831. -0.017764523 0.16884070 -46.476311 37.070535 6806.1323 45676462. -0.016905585 0.17451646 -46.549771 36.960344 6808.4724 42616235. 0.0074056877 0.18019222 -46.622405 36.850151 6810.8125 39484659. -0.017494820 0.18586798 -46.691283 36.739946 6813.1526 39246554. -0.074855065 0.19154374 -46.760161 36.629742