# # 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 = 42.207955 km # Date (UTC) = 2015-12-22T10:18:04.721 # Date (julian) = 2457378.92922131 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6499.4630 9.4912238e+10 0.042224118 0.032121288 -34.359115 49.976343 6501.3993 8.4689235e+10 0.049950448 0.032705176 -34.450301 49.895289 6503.3356 7.5062629e+10 0.057648730 0.033289064 -34.541481 49.814241 6505.2720 6.7526344e+10 0.065999772 0.033872952 -34.632654 49.733196 6507.2083 6.1026034e+10 0.074874405 0.034456841 -34.723828 49.652151 6509.1446 5.5394311e+10 0.083878329 0.035040729 -34.815002 49.571108 6511.0809 5.0309339e+10 0.093238754 0.035624617 -34.906176 49.490064 6513.0172 4.5962502e+10 0.10303535 0.036208506 -34.997351 49.409021 6514.9535 4.2170078e+10 0.11325595 0.036792394 -35.086358 49.327977 6516.8898 3.8840532e+10 0.12386627 0.037376282 -35.174157 49.246933 6518.8261 3.5820407e+10 0.13480037 0.037960170 -35.261955 49.165888 6520.7624 3.3047582e+10 0.14599528 0.038544059 -35.349760 49.084837 6522.6987 3.0466577e+10 0.15544839 0.039100218 -35.437569 49.003783 6524.6350 2.8084963e+10 0.16181952 0.039652555 -35.525378 48.922729 6526.5713 2.5869483e+10 0.16641875 0.040267060 -35.610749 48.841682 6528.5076 2.3870744e+10 0.17057457 0.041845193 -35.695170 48.760637 6530.4439 2.2043104e+10 0.17421836 0.044450211 -35.779590 48.679592 6532.3803 2.0372008e+10 0.17722167 0.047001852 -35.857609 48.604694 6534.3166 1.8857300e+10 0.17800990 0.048033111 -35.933587 48.531755 6536.2529 1.7511619e+10 0.17732605 0.048016747 -36.009564 48.458816 6538.1892 1.6273144e+10 0.17785680 0.049248798 -36.089497 48.380500 6540.1255 1.5126073e+10 0.17756392 0.050913382 -36.173929 48.296068 6542.0618 1.4080402e+10 0.17533752 0.051025696 -36.258362 48.211636 6543.9981 1.3099492e+10 0.17314929 0.051643848 -36.342788 48.128921 6545.9344 1.2184040e+10 0.17110276 0.052463938 -36.427209 48.047878 6547.8707 1.1323238e+10 0.16998310 0.053618479 -36.511629 47.966835 6549.8070 1.0518663e+10 0.16848387 0.054788694 -36.594208 47.885791 6551.7433 9.7589944e+09 0.16669777 0.055496669 -36.675253 47.804747 6553.6796 9.0598769e+09 0.16462089 0.054993426 -36.756298 47.723702 6555.6159 8.4291521e+09 0.16269082 0.054335830 -36.837341 47.642658 6557.5522 7.8536133e+09 0.16082210 0.053519958 -36.918385 47.561615 6559.4886 7.3240333e+09 0.15825643 0.052332038 -36.999428 47.480572 6561.4249 6.8395375e+09 0.15543260 0.051163320 -37.080479 47.399521 6563.3612 6.4049766e+09 0.15279686 0.049510581 -37.161534 47.318466 6565.2975 6.0127016e+09 0.15039216 0.047980612 -37.242589 47.237410 6567.2338 5.6460924e+09 0.14811098 0.046419520 -37.323637 47.156363 6569.1701 5.3054603e+09 0.14568682 0.044863495 -37.404680 47.075320 6571.1064 4.9878872e+09 0.14374497 0.044474217 -37.485723 46.994276 6573.0427 4.6930286e+09 0.14166306 0.043623214 -37.564402 46.910867 6574.9790 4.4185124e+09 0.13933146 0.042384789 -37.642071 46.826446 6576.9153 4.1634016e+09 0.13666072 0.040317845 -37.719739 46.742025 6578.8516 3.9284476e+09 0.13365664 0.037304801 -37.797406 46.660100 6580.7879 3.7080140e+09 0.13128421 0.035792591 -37.875073 46.579056 6582.7242 3.5003856e+09 0.12939212 0.035096709 -37.952740 46.498011 6584.6605 3.3080785e+09 0.12734726 0.034155687 -38.027788 46.416959 6586.5969 3.1267355e+09 0.12536569 0.033163581 -38.102087 46.335905 6588.5332 2.9578315e+09 0.12373517 0.033201880 -38.176387 46.254851 6590.4695 2.8025038e+09 0.12165240 0.030188786 -38.253437 46.173805 6592.4058 2.6547135e+09 0.11950272 0.027679396 -38.331104 46.092760 6594.3421 2.5177012e+09 0.11722540 0.025984738 -38.408771 46.011716 6596.2784 2.3905228e+09 0.11458720 0.025726008 -38.483549 45.930671 6598.2147 2.2727179e+09 0.11273021 0.025304662 -38.557840 45.849627 6600.1510 2.1613818e+09 0.11196628 0.025300308 -38.632131 45.768582 6602.0873 2.0584588e+09 0.11113605 0.027442127 -38.706422 45.684519 6604.0236 1.9620559e+09 0.10939250 0.026085299 -38.780712 45.600098 6605.9599 1.8713839e+09 0.10880618 0.027470343 -38.855003 45.515677 6607.8962 1.7845049e+09 0.10650114 0.023937276 -38.929303 45.434397 6609.8325 1.7013179e+09 0.10343967 0.023953235 -39.003603 45.353343 6611.7688 1.6226607e+09 0.10075658 0.024468160 -39.077904 45.272289 6613.7052 1.5471764e+09 0.099547644 0.023832312 -39.148913 45.191244 6615.6415 1.4754250e+09 0.097940654 0.023271268 -39.219826 45.110199 6617.5778 1.4084631e+09 0.096881763 0.023630806 -39.290739 45.029120 6619.5141 1.3430257e+09 0.096042955 0.024649952 -39.361653 44.944699 6621.4504 1.2803295e+09 0.094996849 0.024940166 -39.432566 44.860278 6623.3867 1.2215456e+09 0.093437284 0.024635088 -39.503479 44.776023 6625.3230 1.1663235e+09 0.092294853 0.025783035 -39.574392 44.694979 6627.2593 1.1129828e+09 0.090466584 0.025416975 -39.645305 44.613936 6629.1956 1.0622427e+09 0.089550031 0.026073738 -39.716219 44.532892 6631.1319 1.0131767e+09 0.088111161 0.025944166 -39.787142 44.451837 6633.0682 9.6665558e+08 0.087114486 0.026164164 -39.858064 44.370782 6635.0045 9.2196144e+08 0.085949737 0.026400467 -39.928558 44.289728 6636.9408 8.7852017e+08 0.084643436 0.026184387 -39.996095 44.208685 6638.8771 8.3790019e+08 0.083731383 0.025633427 -40.063631 44.127642 6640.8135 7.9961892e+08 0.084344813 0.025171125 -40.131727 44.046040 6642.7498 7.6129284e+08 0.084108130 0.025182378 -40.202642 43.961619 6644.6861 7.2617991e+08 0.083162635 0.025417755 -40.273556 43.877197 6646.6224 6.9446940e+08 0.082073020 0.026242308 -40.343782 43.793465 6648.5587 6.6331560e+08 0.081002060 0.027338267 -40.411317 43.712421 6650.4950 6.3313438e+08 0.080470140 0.026368554 -40.478853 43.631376 6652.4313 6.0424103e+08 0.079946009 0.027369188 -40.545571 43.550330 6654.3676 5.7565095e+08 0.079047445 0.027879623 -40.609740 43.469276 6656.3039 5.4859910e+08 0.077292364 0.028290158 -40.673909 43.388222 6658.2402 5.2281650e+08 0.075939048 0.030487109 -40.741405 43.303246 6660.1765 4.9876815e+08 0.074641844 0.031786449 -40.817384 43.208271 6662.1128 4.7678212e+08 0.073267149 0.032980966 -40.893363 43.113296 6664.0491 4.5630942e+08 0.072016600 0.032026293 -40.963859 43.027368 6665.9854 4.3677563e+08 0.072162202 0.026932443 -41.031397 42.946323 6667.9218 4.1934088e+08 0.071552894 0.027442033 -41.098934 42.865278 6669.8581 4.0210422e+08 0.070982994 0.027474415 -41.164148 42.784234 6671.7944 3.8673234e+08 0.070856373 0.026876669 -41.228308 42.703189 6673.7307 3.7367666e+08 0.070297712 0.028551994 -41.292469 42.622145 6675.6670 3.6188286e+08 0.068502854 0.031075871 -41.356634 42.538639 6677.6033 3.4989894e+08 0.067287215 0.031500581 -41.420802 42.454207 6679.5396 3.3740237e+08 0.067180353 0.029821874 -41.484970 42.369775 6681.4759 3.2499270e+08 0.068073432 0.030022463 -41.555274 42.280179 6683.4122 3.1338585e+08 0.068545207 0.031792679 -41.627454 42.189004 6685.3485 3.0190808e+08 0.068349306 0.033072957 -41.698113 42.099181 6687.2848 2.9071573e+08 0.066659805 0.034184051 -41.758896 42.018137 6689.2211 2.7998766e+08 0.064306458 0.033816971 -41.819680 41.937092 6691.1574 2.6983857e+08 0.063561694 0.032964118 -41.881044 41.856047 6693.0937 2.5873877e+08 0.062917644 0.031571928 -41.945205 41.775004 6695.0301 2.4766190e+08 0.062501032 0.029853954 -42.009366 41.693961 6696.9664 2.3739047e+08 0.062085096 0.030077288 -42.074416 41.609981 6698.9027 2.2843689e+08 0.061011771 0.031456831 -42.142798 41.515006 6700.8390 2.2090441e+08 0.059459642 0.031290009 -42.211180 41.420031 6702.7753 2.1428550e+08 0.059013503 0.033495796 -42.275165 41.333115 6704.7116 2.0776149e+08 0.059241493 0.036526981 -42.335947 41.252071 6706.6479 1.9835327e+08 0.059072591 0.039574016 -42.396729 41.171026 6708.5842 1.8633300e+08 0.058757718 0.040679754 -42.457516 41.089976 6710.5205 1.6932101e+08 0.057620761 0.040598378 -42.518308 41.008921 6712.4568 1.5070411e+08 0.055965362 0.042678115 -42.579099 40.927867 6714.3931 1.3113710e+08 0.054326492 0.047332964 -42.644872 40.837678 6716.3294 1.1320859e+08 0.052983296 0.048886582 -42.713254 40.742703 6718.2657 97903040. 0.051327662 0.050226282 -42.781373 40.648062 6720.2020 85268884. 0.050908899 0.050396356 -42.838780 40.567017 6722.1384 74138429. 0.051097976 0.050434164 -42.896186 40.485973 6724.0747 65673686. 0.049278454 0.049303202 -42.954042 40.404294 6726.0110 59699216. 0.045917170 0.040951466 -43.018624 40.313118 6727.9473 56434221. 0.045370502 0.039698345 -43.083207 40.221941 6729.8836 55870634. 0.044261296 0.040456498 -43.146154 40.135125 6731.8199 57881773. 0.042681680 0.043381754 -43.206937 40.054081 6733.7562 61461709. 0.041687993 0.048029915 -43.267721 39.973038 6735.6925 65303521. 0.042857857 0.050028575 -43.330291 39.885454 6737.6288 67308187. 0.044129258 0.056138655 -43.394884 39.790465 6739.5651 67714259. 0.044317813 0.063518148 -43.459478 39.695476 6741.5014 65882935. 0.042823188 0.067188783 -43.524062 39.603678 6743.4377 63584457. 0.039091450 0.074000365 -43.588644 39.512502 6745.3740 61232927. 0.036977491 0.078724129 -43.651065 39.423401 6747.3103 59396889. 0.032580306 0.067254321 -43.705094 39.342358 6749.2467 57504228. 0.032105136 0.072210399 -43.759123 39.261314 6751.1830 56513396. 0.029489986 0.073789027 -43.815722 39.177804 6753.1193 55240786. 0.027166692 0.073363260 -43.880305 39.086628 6755.0556 54287685. 0.025508800 0.074580980 -43.944889 38.995451 6756.9919 53593612. 0.022950958 0.076719166 -44.007151 38.901953 6758.9282 52451918. 0.023834153 0.075668100 -44.067935 38.806978 6760.8645 51643005. 0.023907691 0.077709825 -44.128717 38.712006 6762.8008 50203815. 0.028163531 0.076759085 -44.182891 38.630665 6764.7371 49185629. 0.027410643 0.079518598 -44.236920 38.549622 6766.6734 48033600. 0.029471414 0.081237029 -44.291135 38.468401 6768.6097 46795822. 0.027772806 0.083049958 -44.355726 38.377211 6770.5460 45523975. 0.026175557 0.088204067 -44.420318 38.286020 6772.4823 44131849. 0.024552091 0.092900463 -44.481977 38.194836 6774.4186 42633499. 0.022535099 0.097596860 -44.538962 38.103661 6776.3550 41248037. 0.020184930 0.10229326 -44.595948 38.012486 6778.2913 39987850. 0.017731635 0.10698965 -44.655795 37.918448