# # 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 = 42.500027 km # Date (UTC) = 2013-02-01T09:59:07.070 # Date (julian) = 2456324.91605405 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6496.5221 6.3320548e+10 0.023223128 0.031234458 90.512005 61.358666 6497.9671 6.1016647e+10 0.028441322 0.031670180 90.733165 61.211224 6499.4120 5.8474050e+10 0.033886354 0.032105901 90.970554 61.051726 6500.8570 5.6108990e+10 0.039701304 0.032541622 91.257785 60.855199 6502.3019 5.3482119e+10 0.045795033 0.032977344 91.478826 60.703963 6503.7469 5.1165648e+10 0.052314397 0.033413065 91.693414 60.556523 6505.1918 4.9621811e+10 0.059484027 0.033848787 91.903231 60.409082 6506.6368 4.7488993e+10 0.066786893 0.034284508 92.137707 60.242211 6508.0817 4.4885803e+10 0.074225032 0.034720230 92.404869 60.048849 6509.5267 4.2422829e+10 0.082041616 0.035155951 92.608956 59.895784 6510.9716 4.0340883e+10 0.090355472 0.035591672 92.811310 59.744456 6512.4166 3.8808910e+10 0.099246069 0.036027394 93.009787 59.597014 6513.8615 3.7159713e+10 0.10837051 0.036463115 93.205172 59.446480 6515.3065 3.5383408e+10 0.11767312 0.036898837 93.397980 59.293368 6516.7514 3.3697528e+10 0.12720296 0.037334558 93.590742 59.144727 6518.1964 3.2105173e+10 0.13689462 0.037770280 93.783388 58.997227 6519.6413 3.0534690e+10 0.14664595 0.038206001 93.970525 58.844116 6521.0863 2.9038721e+10 0.15643476 0.038641722 94.157647 58.691016 6522.5312 2.7560718e+10 0.16445355 0.039056362 94.344728 58.537951 6523.9762 2.6085037e+10 0.16898102 0.039421058 94.529053 58.384863 6525.4211 2.4641158e+10 0.17300058 0.039734151 94.710518 58.231751 6526.8661 2.3257292e+10 0.17594780 0.040576083 94.891944 58.078673 6528.3110 2.2019138e+10 0.17744293 0.041689235 95.073355 57.925606 6529.7560 2.0853424e+10 0.17957858 0.043440020 95.249354 57.772498 6531.2009 1.9714523e+10 0.17986426 0.045521161 95.424004 57.619398 6532.6459 1.8639873e+10 0.18165952 0.047223773 95.594078 57.466332 6534.0909 1.7631651e+10 0.18134325 0.047969972 95.766645 57.313247 6535.5358 1.6763744e+10 0.18078577 0.047991867 95.942438 57.160136 6536.9808 1.5854875e+10 0.18087342 0.048668009 96.110604 57.007024 6538.4257 1.4982974e+10 0.17997124 0.049363978 96.275058 56.853913 6539.8707 1.4252135e+10 0.17982646 0.050697539 96.409573 56.728674 6541.3156 1.3648972e+10 0.17782239 0.051224178 96.541097 56.606221 6542.7606 1.3127321e+10 0.17658309 0.051290990 96.695810 56.462178 6544.2055 1.2496523e+10 0.17497706 0.051811066 96.860263 56.309067 6545.6505 1.1715262e+10 0.17352599 0.052461395 97.019336 56.150666 6547.0954 1.0987164e+10 0.17262394 0.053323651 97.172461 55.998343 6548.5404 1.0460900e+10 0.17073424 0.053829019 97.299478 55.875861 6549.9853 1.0034745e+10 0.16974548 0.054970403 97.426496 55.753379 6551.4303 9.6072264e+09 0.16759129 0.055386784 97.578885 55.601113 6552.8752 9.1109040e+09 0.16607177 0.055366472 97.725588 55.453461 6554.3202 8.6365468e+09 0.16384042 0.054839099 97.848043 55.326474 6555.7651 8.2240412e+09 0.16168551 0.054210471 97.970599 55.199380 6557.2101 7.8350214e+09 0.16014668 0.053734426 98.118040 55.046269 6558.6550 7.4262488e+09 0.15794655 0.052681134 98.258383 54.899437 6560.1000 7.0809220e+09 0.15635667 0.052184158 98.376326 54.772419 6561.5449 6.7840318e+09 0.15395122 0.051104147 98.495335 54.644253 6562.9899 6.4813181e+09 0.15208777 0.049937986 98.642734 54.485517 6564.4348 6.1739608e+09 0.15006038 0.048574526 98.780878 54.336651 6565.8798 5.9166489e+09 0.14807794 0.047319378 98.894287 54.214169 6567.3247 5.7169578e+09 0.14677072 0.046342606 99.009617 54.089228 6568.7697 5.4728657e+09 0.14496490 0.045064126 99.151344 53.930494 6570.2147 5.1865009e+09 0.14404788 0.044828593 99.284465 53.781399 6571.6596 4.8909182e+09 0.14262233 0.044323125 99.397874 53.654382 6573.1046 4.6689546e+09 0.14100088 0.043573579 99.510831 53.527815 6574.5495 4.5349263e+09 0.13897527 0.042591079 99.619703 53.405334 6575.9945 4.4014978e+09 0.13674543 0.041376953 99.728574 53.282852 6577.4394 4.2204593e+09 0.13495003 0.039530164 99.856708 53.127921 6578.8844 4.0126020e+09 0.13254364 0.037253102 99.984278 52.973346 6580.3293 3.7948849e+09 0.13090034 0.036216419 100.09315 52.846327 6581.7743 3.6267966e+09 0.12890456 0.035362150 100.20202 52.719307 6583.2192 3.5020738e+09 0.12695606 0.034910708 100.30669 52.592290 6584.6642 3.3805133e+09 0.12491568 0.034153712 100.41103 52.465273 6586.1091 3.2713426e+09 0.12268682 0.033169886 100.51207 52.338277 6587.5541 3.1597570e+09 0.12132772 0.033281131 100.61185 52.211289 6588.9990 3.0280965e+09 0.11968597 0.033046302 100.72748 52.070786 6590.4440 2.8796508e+09 0.11830929 0.030236198 100.85791 51.917675 6591.8889 2.7243785e+09 0.11681187 0.028198856 100.96524 51.784236 6593.3339 2.5974643e+09 0.11536474 0.026791811 101.06504 51.657216 6594.7788 2.4939338e+09 0.11375681 0.025744981 101.16483 51.530215 6596.2238 2.3983115e+09 0.11169896 0.025726256 101.26461 51.403228 6597.6687 2.3058945e+09 0.11043459 0.025511699 101.36283 51.276231 6599.1137 2.2147935e+09 0.10913752 0.024936568 101.45809 51.149213 6600.5586 2.1374951e+09 0.10915553 0.026138340 101.55336 51.022195 6602.0036 2.0653805e+09 0.10861196 0.027513566 101.64862 50.895175 6603.4485 1.9921014e+09 0.10748464 0.026397736 101.74388 50.768156 6604.8935 1.9140465e+09 0.10703771 0.026601806 101.83914 50.641139 6606.3385 1.8435391e+09 0.10628492 0.026895780 101.93441 50.514122 6607.7834 1.7834712e+09 0.10459789 0.024160071 102.02965 50.387127 6609.2284 1.7304237e+09 0.10222843 0.023773763 102.12489 50.260140 6610.6733 1.6748101e+09 0.10007644 0.024646307 102.21776 50.133135 6612.1183 1.6180051e+09 0.098701351 0.024232394 102.30849 50.006116 6613.5632 1.5657442e+09 0.097895120 0.023780233 102.39922 49.879097 6615.0082 1.5162029e+09 0.096894730 0.023251783 102.48994 49.752080 6616.4531 1.4652886e+09 0.095536001 0.023353415 102.58013 49.625066 6617.8981 1.4111136e+09 0.095038348 0.023737000 102.66630 49.498079 6619.3430 1.3600803e+09 0.094414364 0.024608679 102.75248 49.371092 6620.7880 1.3146609e+09 0.093897050 0.025021120 102.84280 49.244077 6622.2329 1.2704364e+09 0.093144714 0.024695997 102.93353 49.117060 6623.6779 1.2258347e+09 0.091986321 0.024742967 103.02104 48.986829 6625.1228 1.1774490e+09 0.091478174 0.025544172 103.10724 48.855273 6626.5678 1.1300711e+09 0.090277970 0.025867502 103.19342 48.726019 6628.0127 1.0904222e+09 0.089514288 0.025708263 103.27958 48.599030 6629.4577 1.0525955e+09 0.088677045 0.026026355 103.36576 48.472033 6630.9026 1.0110465e+09 0.087569691 0.025930526 103.45195 48.345016 6632.3476 9.6685510e+08 0.086791669 0.026074024 103.53643 48.219999 6633.7925 9.3343876e+08 0.085820484 0.026290622 103.60447 48.114155 6635.2375 9.1056799e+08 0.084921250 0.026435403 103.67251 48.008312 6636.6824 8.9181941e+08 0.083786749 0.026284733 103.74667 47.892959 6638.1274 8.6465925e+08 0.083151584 0.025666092 103.82832 47.765940 6639.5723 8.3152084e+08 0.082897281 0.025423506 103.90997 47.638928 6641.0173 8.0094371e+08 0.083271371 0.025148359 103.99161 47.511940 6642.4622 7.7340736e+08 0.083040766 0.025170612 104.07325 47.384951 6643.9072 7.4616972e+08 0.082209508 0.025329595 104.15490 47.257933 6645.3522 7.1800238e+08 0.081652830 0.025616655 104.23655 47.130916 6646.7971 6.8989334e+08 0.080819597 0.026332755 104.31442 47.003899 6648.2421 6.6326337e+08 0.080105637 0.027126318 104.39154 46.876881 6649.6870 6.4286074e+08 0.079500308 0.026686680 104.46293 46.760838 6651.1320 6.2492144e+08 0.079111522 0.026585294 104.53097 46.651213 6652.5769 6.0863268e+08 0.078901642 0.027409253 104.59902 46.541570 6654.0219 5.9389563e+08 0.078388353 0.028026911 104.67598 46.414851 6655.4668 5.7264588e+08 0.077447151 0.027803106 104.75308 46.287863 6656.9118 5.4867273e+08 0.076358109 0.028823671 104.82665 46.160852 6658.3567 5.2698390e+08 0.075593143 0.030693730 104.89924 46.033834 6659.8017 5.0701643e+08 0.074826713 0.031667369 104.96703 45.919017 6661.2466 4.9894575e+08 0.073822846 0.032660561 105.03129 45.813173 6662.6916 4.8953800e+08 0.073093263 0.032656256 105.09555 45.707329 6664.1365 4.7796793e+08 0.072191173 0.031706537 105.16754 45.581804 6665.5815 4.6230551e+08 0.072446688 0.027594354 105.24011 45.454814 6667.0264 4.4113734e+08 0.072273292 0.027113167 105.31598 45.327804 6668.4714 4.2577215e+08 0.071598068 0.027887916 105.39309 45.200787 6669.9163 4.1108225e+08 0.071499028 0.027414561 105.46154 45.082838 6671.3613 4.0700417e+08 0.071330575 0.026870497 105.52202 44.973214 6672.8062 4.0466704e+08 0.071036991 0.027346911 105.58250 44.863589 6674.2512 3.9762854e+08 0.070194396 0.029166688 105.64961 44.738728 6675.6961 3.8682121e+08 0.068682318 0.031131728 105.71765 44.611711 6677.1411 3.7142935e+08 0.067535674 0.032157635 105.78873 44.484714 6678.5860 3.5942979e+08 0.067176723 0.030544640 105.86130 44.357727 6680.0310 3.5126140e+08 0.067616640 0.029448110 105.92823 44.240607 6681.4760 3.4344388e+08 0.068089338 0.030022501 105.98871 44.134762 6682.9209 3.3378099e+08 0.068522076 0.031128149 106.04919 44.028917 6684.3659 3.2703877e+08 0.068427676 0.032672657 106.11588 43.905684 6685.8108 3.1751176e+08 0.068095290 0.033561250 106.18393 43.778666 6687.2558 3.0390912e+08 0.066665491 0.034200260 106.25197 43.648849 6688.7007 2.8903748e+08 0.064841760 0.033946938 106.32002 43.517293 6690.1457 2.7390493e+08 0.064122704 0.033099171 106.38338 43.396351 6691.5906 2.6689571e+08 0.063388000 0.032861917 106.44007 43.290529 6693.0356 2.5763431e+08 0.062933599 0.031591887 106.49677 43.184707 6694.4805 2.4799155e+08 0.062352443 0.030587553 106.55868 43.062638 6695.9255 2.3942099e+08 0.062241133 0.029689476 106.62219 42.935620 6697.3704 2.2522374e+08 0.061769317 0.030138143 106.68187 42.820504 6698.8154 2.1667473e+08 0.060824167 0.031337013 106.73858 42.714659 6700.2603 2.0559747e+08 0.059718840 0.030860810 106.79528 42.608814 6701.7053 1.9780362e+08 0.058459114 0.032444291 106.85822 42.483560 6703.1502 1.9361680e+08 0.058539269 0.034051161 106.92173 42.356543 6704.5952 1.8484300e+08 0.058538833 0.036469820 106.98038 42.244623 6706.0401 1.7713069e+08 0.058352538 0.038516256 107.03707 42.138800 6707.4851 1.7169068e+08 0.057971388 0.040117338 107.09421 42.031270 6708.9300 1.6369318e+08 0.057380055 0.041056358 107.15772 41.899714 6710.3750 1.5545594e+08 0.056245894 0.040569895 107.22124 41.768158 6711.8199 1.5477526e+08 0.054623186 0.041625103 107.27562 41.658766 6713.2649 1.5551610e+08 0.053174825 0.044644692 107.32854 41.552922 6714.7098 1.5560911e+08 0.051694160 0.047356775 107.38277 41.442493 6716.1548 1.5356694e+08 0.050345653 0.048629364 107.44175 41.315473 6717.5998 1.4420264e+08 0.048802999 0.049837171 107.50077 41.188455 6719.0447 1.3817430e+08 0.047001033 0.051327368 107.56427 41.061468 6720.4897 1.3489662e+08 0.047257618 0.050363031 107.62776 40.934481 6721.9346 1.3011036e+08 0.047089160 0.050585501 107.67967 40.824561 6723.3796 1.2512294e+08 0.045742128 0.049580630 107.72881 40.718718 6724.8245 1.2164244e+08 0.042478680 0.043041470 107.78027 40.609448 6726.2695 1.1868859e+08 0.040807415 0.040953798 107.84379 40.482429 6727.7144 1.1315804e+08 0.040130964 0.040008582 107.90730 40.355410 6729.1594 1.0800721e+08 0.039470404 0.040939206 107.95705 40.248664 6730.6043 1.0015699e+08 0.037837701 0.041207497 108.00619 40.142820 6732.0493 97676331. 0.036412992 0.043749280 108.05840 40.030380 6733.4942 92518122. 0.035282280 0.046607584 108.11735 39.903392 6734.9392 87354417. 0.034840839 0.049297092 108.17526 39.778263 6736.3841 82154749. 0.034784967 0.051807218 108.22440 39.668638 6737.8291 75851944. 0.033318305 0.056776614 108.27355 39.559014 6739.2740 74081099. 0.028747649 0.063161912 108.32723 39.441359 6740.7190 68441573. -0.0017082610 0.065278619 108.38620 39.314342 6742.1639 62014092. 0.018112979 0.069010207 108.44167 39.192772 6743.6089 59831763. 0.070921415 0.075154968 108.48703 39.086927