# # 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 = 53.624998 km # Date (UTC) = 2015-11-23T10:55:22.525 # Date (julian) = 2457349.95512182 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6496.1933 6.3295386e+10 0.029287010 0.031135307 92.047578 27.974184 6498.4416 5.9208841e+10 0.036559469 0.031813284 92.104877 27.838621 6500.6899 5.4588259e+10 0.043988732 0.032491262 92.165376 27.697460 6502.9383 5.0321102e+10 0.051741353 0.033169239 92.218774 27.564148 6505.1866 4.6338608e+10 0.059899451 0.033847217 92.267297 27.436224 6507.4349 4.3064240e+10 0.068711945 0.034525194 92.317258 27.308300 6509.6833 4.0418953e+10 0.078387875 0.035203172 92.370190 27.180375 6511.9316 3.8032261e+10 0.088904460 0.035881150 92.423271 27.051670 6514.1799 3.5495436e+10 0.10005422 0.036559127 92.478727 26.910510 6516.4283 3.2797330e+10 0.11180174 0.037237105 92.533993 26.770348 6518.6766 3.0076917e+10 0.12413066 0.037915082 92.586928 26.642423 6520.9249 2.7775417e+10 0.13732304 0.038593060 92.639864 26.514499 6523.1732 2.5840795e+10 0.14805257 0.039222049 92.689232 26.386575 6525.4216 2.4088466e+10 0.15611017 0.039734102 92.737755 26.258651 6527.6699 2.2510391e+10 0.16356147 0.041202822 92.786279 26.133116 6529.9182 2.1070382e+10 0.17035563 0.043698432 92.834802 26.009602 6532.1666 1.9593859e+10 0.17551918 0.046823327 92.885229 25.879859 6534.4149 1.7955934e+10 0.17814526 0.048060615 92.940685 25.733657 6536.6632 1.6379259e+10 0.17875882 0.048383891 92.995407 25.594057 6538.9115 1.4984741e+10 0.17832698 0.049600552 93.048339 25.470544 6541.1599 1.3900197e+10 0.17657634 0.051274685 93.101165 25.346925 6543.4082 1.2998051e+10 0.17421625 0.051489026 93.149688 25.219001 6545.6565 1.2085372e+10 0.17177064 0.052461449 93.198211 25.091076 6547.9049 1.1184657e+10 0.16995328 0.053631463 93.243394 24.966492 6550.1532 1.0327637e+10 0.16821542 0.055023715 93.287505 24.842980 6552.4015 9.5618496e+09 0.16620168 0.055485707 93.333782 24.717295 6554.6498 8.9010074e+09 0.16392379 0.054846017 93.382313 24.589351 6556.8982 8.2894446e+09 0.16161015 0.053881078 93.432389 24.458459 6559.1465 7.6815607e+09 0.15873471 0.052370646 93.487836 24.317322 6561.3948 7.1021571e+09 0.15596139 0.051178120 93.541626 24.180404 6563.6432 6.5664930e+09 0.15317828 0.049184387 93.590156 24.056872 6565.8915 6.1205137e+09 0.15057658 0.047306108 93.638687 23.933341 6568.1398 5.7359526e+09 0.14871044 0.045643143 93.682918 23.805535 6570.3881 5.3767234e+09 0.14679812 0.044756728 93.727029 23.677611 6572.6365 5.0412877e+09 0.14457356 0.043865667 93.774255 23.552801 6574.8848 4.7372711e+09 0.14191374 0.042430040 93.822778 23.429289 6577.1331 4.4603538e+09 0.13881352 0.040011264 93.869364 23.305776 6579.3815 4.2068349e+09 0.13522525 0.036860795 93.913475 23.182263 6581.6298 3.9727914e+09 0.13203829 0.035405902 93.958346 23.058749 6583.8781 3.7585901e+09 0.12872162 0.034577206 94.006869 22.935236 6586.1264 3.5610604e+09 0.12557107 0.033169662 94.055392 22.811723 6588.3748 3.3444863e+09 0.12331754 0.033254775 94.105630 22.667674 6590.6231 3.1210117e+09 0.12077445 0.029903007 94.156048 22.521472 6592.8714 2.9137681e+09 0.11876784 0.027227105 94.200654 22.396179 6595.1198 2.7315988e+09 0.11656575 0.025635990 94.244765 22.272665 6597.3681 2.5798967e+09 0.11425175 0.025606574 94.291764 22.149153 6599.6164 2.4434787e+09 0.11311890 0.024966804 94.340287 22.025640 6601.8647 2.3192326e+09 0.11289241 0.027452934 94.387100 21.902127 6604.1131 2.2141432e+09 0.11145858 0.026138414 94.431211 21.778614 6606.3614 2.1107521e+09 0.11096258 0.026854541 94.475322 21.655100 6608.6097 2.0068806e+09 0.10826615 0.023716250 94.519434 21.531587 6610.8581 1.9080369e+09 0.10515096 0.024822832 94.563545 21.408073 6613.1064 1.8119994e+09 0.10398341 0.023612623 94.607662 21.284545 6615.3547 1.7221194e+09 0.10257157 0.023262445 94.651779 21.161014 6617.6030 1.6416703e+09 0.10140638 0.023639186 94.695893 21.037494 6619.8514 1.5688257e+09 0.10057981 0.024731336 94.740004 20.913980 6622.0997 1.4996950e+09 0.099128182 0.024731456 94.786134 20.784819 6624.3480 1.4188179e+09 0.097183790 0.025048608 94.836552 20.643657 6626.5964 1.3382424e+09 0.095419852 0.025831089 94.883362 20.508435 6628.8447 1.2666804e+09 0.093846496 0.026046046 94.923061 20.384923 6631.0930 1.2001108e+09 0.091878726 0.025940214 94.963067 20.261410 6633.3413 1.1441140e+09 0.090171673 0.026211848 95.007178 20.137897 6635.5897 1.0897101e+09 0.088327042 0.026488218 95.051289 20.014384 6637.8380 1.0409184e+09 0.086976330 0.025750985 95.095403 19.890870 6640.0863 1.0002756e+09 0.086815762 0.025260089 95.139518 19.767356 6642.3347 9.5670917e+08 0.086999872 0.025165391 95.181267 19.643843 6644.5830 9.1238644e+08 0.086233048 0.025406614 95.220966 19.520331 6646.8313 8.6994545e+08 0.085318640 0.026350463 95.261851 19.398003 6649.0796 8.3308166e+08 0.084260063 0.027523902 95.305962 19.278901 6651.3280 8.0385269e+08 0.083995420 0.026735509 95.350076 19.159734 6653.5763 7.6519721e+08 0.083606975 0.027819900 95.395450 19.018601 6655.8246 7.2483054e+08 0.082081159 0.027950955 95.440802 18.877760 6658.0730 6.8064840e+08 0.080746722 0.030190474 95.484913 18.754248 6660.3213 6.4119168e+08 0.079406057 0.031918033 95.529024 18.630736 6662.5696 6.1355496e+08 0.078050563 0.032724683 95.569821 18.507222 6664.8179 5.8615531e+08 0.077270474 0.029213261 95.609520 18.383708 6667.0663 5.6752404e+08 0.076848144 0.027127801 95.651361 18.262322 6669.3146 5.4396118e+08 0.075729421 0.028032584 95.695482 18.143202 6671.5629 5.2159234e+08 0.075681364 0.026873371 95.738641 18.023127 6673.8113 5.0145522e+08 0.074899948 0.028672517 95.778340 17.899614 6676.0596 4.8091154e+08 0.072531034 0.031752129 95.818039 17.776102 6678.3079 4.6396774e+08 0.071404315 0.030730665 95.863133 17.640605 6680.5562 4.4187741e+08 0.071859104 0.029561533 95.908508 17.504486 6682.8046 4.2085458e+08 0.072465872 0.031039269 95.948394 17.380557 6685.0529 3.9806373e+08 0.072294879 0.032760717 95.988093 17.257044 6687.3012 3.7824561e+08 0.070377947 0.034174900 96.030881 17.133531 6689.5496 3.6615990e+08 0.067877426 0.033521331 96.074993 17.010018 6691.7979 3.5478465e+08 0.066914193 0.032813014 96.117194 16.888415 6694.0462 3.4628082e+08 0.065988711 0.031196249 96.156897 16.769313 6696.2945 3.2842833e+08 0.066003377 0.029798164 96.197541 16.647384 6698.5429 3.1179536e+08 0.065079158 0.030962977 96.242912 16.511265 6700.7912 2.9867136e+08 0.063344679 0.031254577 96.287248 16.377447 6703.0395 2.8827932e+08 0.062956053 0.033774160 96.326950 16.253935 6705.2879 2.7755768e+08 0.063131341 0.037180367 96.366653 16.130422 6707.5362 2.6231516e+08 0.062881634 0.040110018 96.406352 16.010948 6709.7845 2.4985510e+08 0.061988713 0.040633551 96.446051 15.891845 6712.0328 2.4012118e+08 0.059862400 0.041890947 96.489432 15.758434 6714.2812 2.3307561e+08 0.057712465 0.047324547 96.534807 15.617273 6716.5295 2.2116036e+08 0.055881030 0.049181273 96.573473 15.490784 6718.7778 2.1271187e+08 0.053485223 0.051023832 96.608760 15.371683 6721.0262 2.0414394e+08 0.053710115 0.050311782 96.645804 15.252581 6723.2745 1.9735845e+08 0.052441475 0.049522033 96.685507 15.133479 6725.5228 1.9012980e+08 0.048231141 0.041249439 96.725953 15.011484 6727.7711 1.8173993e+08 0.047167877 0.039932995 96.771324 14.870323 6730.0195 1.7486457e+08 0.045917878 0.040405609 96.815858 14.732419 6732.2678 1.7047983e+08 0.044238152 0.043789511 96.855561 14.613316 6734.5161 1.6593714e+08 0.043705168 0.049322545 96.895263 14.494213 6736.7645 1.5802808e+08 0.045509633 0.053245107 96.935521 14.360125 6739.0128 1.5074999e+08 0.046400467 0.062842207 96.975853 14.224006 6741.2611 1.4352882e+08 0.045087208 0.066503424 97.015623 14.103137 6743.5095 1.3824053e+08 0.040908055 0.074484176 97.055328 13.984018 6745.7578 1.3212908e+08 0.038919756 0.078885450 97.098607 13.854180 6748.0061 1.2988568e+08 0.034834767 0.067049031 97.143982 13.718062 6750.2544 1.2453881e+08 0.032203093 0.072438592 97.182831 13.592951 6752.5028 1.1834629e+08 0.029512842 0.073552684 97.218118 13.473849 6754.7511 1.1281819e+08 0.028032596 0.075005619 97.257238 13.348282 6756.9994 1.0517862e+08 0.025272092 0.076738570 97.302613 13.212163 6759.2478 1.0205723e+08 0.026435110 0.075879741 97.343991 13.082789 6761.4961 99530247. 0.028498704 0.078009211 97.379281 12.963686 6763.7444 98378664. 0.032930678 0.078704876 97.415876 12.842381 6765.9927 96625562. 0.034965846 0.079712421 97.461247 12.706262 6768.2411 90203903. 0.031658326 0.081723437 97.505148 12.572626 6770.4894 84973653. 0.027129048 0.088066697 97.540438 12.453524 6772.7377 78717263. 0.023137172 0.093519883 97.575728 12.334422 6774.9861 79358438. 0.019146741 0.098973069 97.619879 12.200364 6777.2344 79241900. 0.015162710 0.10442625 97.665250 12.064245 6779.4827 75864501. 0.011169040 0.10987944 97.706110 11.928125 6781.7310 72485218. 0.0071707007 0.11533263 97.746443 11.792004 6783.9794 66389289. 0.0031491742 0.12078581 97.782178 11.671402 6786.2277 65696207. -0.00084890254 0.12623900 97.817468 11.552300 6788.4760 63422421. -0.0048679521 0.13169218 97.859259 11.422225 6790.7244 60539721. -0.0089210472 0.13714537 97.904630 11.286106 6792.9727 56203298. -0.013066529 0.14259855 97.946669 11.149987 6795.2210 52710049. -0.017360305 0.14805174 97.987002 11.013868 6797.4693 50532708. -0.021880948 0.15350492 98.027334 10.881165 6799.7177 49731520. -0.027421651 0.15895811 98.067667 10.750088 6801.9660 47983526. -0.040567392 0.16441130 98.108000 10.615509 6804.2143 46457898. -0.037263320 0.16986448 98.148332 10.479389 6806.4627 46637163. -0.024872003 0.17531767 98.185079 10.355363