# # 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 = 44.802140 km # Date (UTC) = 2016-01-11T09:37:11.031 # Date (julian) = 2457398.90082212 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6496.0317 9.3478325e+10 0.028683691 0.031086593 -23.090075 51.112432 6498.0910 8.6398085e+10 0.036044303 0.031707566 -23.210090 51.003620 6500.1503 7.7342508e+10 0.043447073 0.032328538 -23.319178 50.902613 6502.2096 6.9662335e+10 0.051121176 0.032949511 -23.428266 50.801605 6504.2689 6.3275380e+10 0.059189048 0.033570484 -23.533378 50.700598 6506.3282 5.8123625e+10 0.067795053 0.034191457 -23.638425 50.599591 6508.3875 5.3424491e+10 0.076930215 0.034812429 -23.745529 50.498584 6510.4468 4.9848679e+10 0.086870425 0.035433402 -23.854616 50.397577 6512.5060 4.6112143e+10 0.097269355 0.036054375 -23.963566 50.296432 6514.5653 4.2926947e+10 0.10839249 0.036675348 -24.068614 50.191386 6516.6246 3.9589783e+10 0.11995513 0.037296320 -24.173661 50.086339 6518.6839 3.6563433e+10 0.13210400 0.037917293 -24.276451 49.983550 6520.7432 3.3481214e+10 0.14461514 0.038538266 -24.377458 49.882543 6522.8025 3.0259513e+10 0.15512143 0.039127392 -24.478803 49.781536 6524.8618 2.7896191e+10 0.16323661 0.039733110 -24.583851 49.680529 6526.9211 2.5032520e+10 0.16921655 0.040633712 -24.688898 49.579522 6528.9803 2.2773877e+10 0.17364131 0.042220196 -24.791486 49.478514 6531.0396 2.0484777e+10 0.17741668 0.045286372 -24.892493 49.377507 6533.0989 1.8512715e+10 0.18093358 0.047561627 -24.991522 49.277998 6535.1582 1.7447013e+10 0.18140617 0.048155664 -25.077724 49.188204 6537.2175 1.6155199e+10 0.18044213 0.048787768 -25.163927 49.098410 6539.2768 1.5201516e+10 0.17880161 0.049978673 -25.255304 49.003283 6541.3361 1.3997403e+10 0.17668300 0.051217542 -25.356312 48.898235 6543.3954 1.2890549e+10 0.17451892 0.051485658 -25.457319 48.793186 6545.4547 1.1867372e+10 0.17254306 0.052459640 -25.554793 48.691672 6547.5139 1.0982110e+10 0.17075524 0.053482806 -25.651759 48.590665 6549.5732 1.0236440e+10 0.16878214 0.054550444 -25.748727 48.489658 6551.6325 9.5189927e+09 0.16691163 0.055457773 -25.845694 48.388651 6553.6918 8.9280796e+09 0.16464061 0.054987307 -25.942662 48.287643 6555.7511 8.3322570e+09 0.16235153 0.054222269 -26.035894 48.182902 6557.8104 7.7910885e+09 0.16026161 0.053358160 -26.128820 48.077856 6559.8697 7.2597311e+09 0.15758005 0.052289020 -26.221747 47.974624 6561.9290 6.7758979e+09 0.15442849 0.050914913 -26.314673 47.873617 6563.9882 6.3280012e+09 0.15097876 0.048785200 -26.407600 47.772609 6566.0475 5.8949879e+09 0.14830163 0.047155997 -26.500526 47.671602 6568.1068 5.5245786e+09 0.14616203 0.045673472 -26.593452 47.570595 6570.1661 5.1606263e+09 0.14392915 0.044848703 -26.686379 47.467571 6572.2254 4.8591527e+09 0.14119260 0.044101079 -26.779306 47.362523 6574.2847 4.5686574e+09 0.13782082 0.042718275 -26.872136 47.257572 6576.3440 4.2851044e+09 0.13450781 0.040975480 -26.961036 47.156549 6578.4033 4.0354271e+09 0.13097193 0.038012827 -27.049935 47.055527 6580.4625 3.7959891e+09 0.12787995 0.036093297 -27.138827 46.952294 6582.5218 3.5760623e+09 0.12550296 0.035151790 -27.227713 46.847247 6584.5811 3.3672783e+09 0.12342793 0.034198954 -27.316599 46.742501 6586.6404 3.1622687e+09 0.12153126 0.033163018 -27.405486 46.641493 6588.6997 2.9692385e+09 0.11983172 0.033146266 -27.494373 46.540486 6590.7590 2.7842012e+09 0.11759494 0.029650242 -27.580838 46.439479 6592.8183 2.5985171e+09 0.11563134 0.027278737 -27.665684 46.338472 6594.8776 2.4297367e+09 0.11340893 0.025690786 -27.749805 46.238412 6596.9368 2.2861146e+09 0.11086894 0.025723014 -27.828814 46.145039 6598.9961 2.1764529e+09 0.10882160 0.024931577 -27.907822 46.051665 6601.0554 2.0807693e+09 0.10859976 0.027071789 -27.988813 45.955699 6603.1147 1.9758167e+09 0.10737030 0.026595367 -28.073659 45.854692 6605.1740 1.8641976e+09 0.10648163 0.026811012 -28.158506 45.753685 6607.2333 1.7539083e+09 0.10489103 0.025246348 -28.243352 45.649184 6609.2926 1.6501503e+09 0.10175085 0.023792839 -28.328197 45.544136 6611.3519 1.5475779e+09 0.098904971 0.024734074 -28.411470 45.440661 6613.4111 1.4485914e+09 0.097772139 0.023724441 -28.492276 45.339654 6615.4704 1.3594555e+09 0.096211242 0.023266006 -28.573082 45.238647 6617.5297 1.2833924e+09 0.094943256 0.023614877 -28.653899 45.133932 6619.5890 1.2168802e+09 0.093906383 0.024668033 -28.734717 45.028870 6621.6483 1.1483873e+09 0.092515833 0.024874566 -28.817306 44.925591 6623.7076 1.0816706e+09 0.090470461 0.024753975 -28.902151 44.824583 6625.7669 1.0245197e+09 0.089156679 0.026312714 -28.986997 44.723576 6627.8262 9.6743764e+08 0.087466876 0.025635944 -29.064049 44.618671 6629.8854 9.1470832e+08 0.086467093 0.025949013 -29.140814 44.513623 6631.9447 8.5889503e+08 0.085139987 0.026026732 -29.219557 44.410553 6634.0040 8.0390764e+08 0.084092910 0.026327136 -29.300362 44.309546 6636.0633 7.5623217e+08 0.083014292 0.026525166 -29.381106 44.208477 6638.1226 7.1291754e+08 0.082359897 0.025666301 -29.457875 44.103433 6640.1819 6.7152328e+08 0.082613474 0.025248398 -29.534641 43.998386 6642.2412 6.3862454e+08 0.082772441 0.025161566 -29.613586 43.895518 6644.3005 6.0732481e+08 0.081922077 0.025376080 -29.694392 43.794511 6646.3598 5.7718623e+08 0.081056344 0.026106366 -29.774938 43.693244 6648.4190 5.4857152e+08 0.080149100 0.027244790 -29.851703 43.588196 6650.4783 5.2043911e+08 0.079699868 0.026364739 -29.928468 43.483148 6652.5376 4.9693603e+08 0.079293626 0.027398440 -30.002852 43.380481 6654.5969 4.7598237e+08 0.078352930 0.027781940 -30.075577 43.279474 6656.6562 4.5535820e+08 0.076538438 0.028599351 -30.148764 43.178006 6658.7155 4.3542879e+08 0.075049212 0.031329992 -30.225529 43.072959 6660.7748 4.1760379e+08 0.073709845 0.032330222 -30.302295 42.967912 6662.8341 3.9872903e+08 0.072484680 0.032576319 -30.376485 42.865437 6664.8933 3.8194172e+08 0.071692278 0.028937393 -30.449222 42.764415 6666.9526 3.6360212e+08 0.071246913 0.027094227 -30.522621 42.662730 6669.0119 3.4754949e+08 0.069907669 0.028343464 -30.599386 42.557682 6671.0712 3.2989640e+08 0.070035545 0.026866363 -30.676152 42.452634 6673.1305 3.1700050e+08 0.069645809 0.027654377 -30.750132 42.350371 6675.1898 3.0548538e+08 0.068103066 0.030161854 -30.822856 42.249364 6677.2491 2.9372014e+08 0.066298678 0.032004143 -30.894715 42.147492 6679.3084 2.7960422e+08 0.065987289 0.030012961 -30.963400 42.042445 6681.3676 2.6437331e+08 0.066964436 0.029939408 -31.032085 41.937399 6683.4269 2.5205870e+08 0.067362924 0.031814252 -31.103756 41.835338 6685.4862 2.4086395e+08 0.066953692 0.033218404 -31.176481 41.734331 6687.5455 2.3111381e+08 0.064826967 0.034038666 -31.248139 41.632257 6689.6048 2.2148027e+08 0.062409639 0.033471613 -31.316825 41.527210 6691.6641 2.1259661e+08 0.061231699 0.032844584 -31.385510 41.422162 6693.7234 2.0448728e+08 0.060074598 0.031355928 -31.457383 41.320303 6695.7827 1.9537715e+08 0.059576989 0.029715709 -31.530108 41.219296 6697.8419 1.8677059e+08 0.058525735 0.030197815 -31.601564 41.117020 6699.9012 1.7524829e+08 0.056676754 0.030758853 -31.670249 41.011972 6701.9605 1.6404277e+08 0.054559657 0.032818801 -31.738934 40.906924 6704.0198 1.5476980e+08 0.054415110 0.036187280 -31.807619 40.805266 6706.0791 1.4781009e+08 0.053926329 0.038584063 -31.876304 40.704259 6708.1384 1.4055349e+08 0.053060619 0.040194272 -31.943522 40.603246 6710.1977 1.3093936e+08 0.051222466 0.040535186 -32.008178 40.502223 6712.2570 1.2434985e+08 0.048600104 0.042307045 -32.072833 40.401201 6714.3162 1.2200541e+08 0.046154254 0.047327184 -32.149796 40.283255 6716.3755 1.2092933e+08 0.044108605 0.048954487 -32.228293 40.163199 6718.4348 1.1575602e+08 0.041502367 0.050489616 -32.296769 40.056925 6720.4941 1.0772998e+08 0.040445159 0.050362515 -32.361413 39.955918 6722.5534 1.0123758e+08 0.039351872 0.049921061 -32.427061 39.853907 6724.6127 98030241. 0.035666459 0.044810349 -32.495747 39.748859 6726.6720 94184821. 0.032752802 0.040957428 -32.564432 39.643811 6728.7313 94903392. 0.032387041 0.040664535 -32.629993 39.541888 6730.7905 93425670. 0.030549338 0.041462841 -32.694637 39.440881 6732.8498 92986363. 0.029244937 0.043896661 -32.760659 39.334192 6734.9091 89875013. 0.028754001 0.049298900 -32.829922 39.214136 6736.9684 82245670. 0.029188233 0.054016142 -32.898572 39.096605 6739.0277 76698557. 0.028762592 0.062860450 -32.963217 38.995598 6741.0870 69417512. 0.025787442 0.066006782 -33.027861 38.894591 6743.1463 65862557. 0.020857973 0.072034204 -33.092506 38.793584 6745.2056 65343567. 0.017146367 0.078653303 -33.157150 38.692577 6747.2649 64513255. 0.011274188 0.067269983 -33.222637 38.588094 6749.3241 61296340. 0.0075927750 0.072189184 -33.291902 38.468037 6751.3834 58857299. 0.00036050236 0.073873785 -33.361087 38.348305 6753.4427 54663501. -0.011669201 0.074409990 -33.425732 38.247292 6755.5020 52665011. -0.058366759 0.074385250 -33.490377 38.146285 6757.5613 52445471. -0.025374432 0.075036695 -33.552832 38.043090 6761.6799 49526252. 0.065075278 0.078024395 -33.674617 37.832302