# # 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 = 58.008347 km # Date (UTC) = 2013-12-31T10:42:13.942 # Date (julian) = 2456657.94599470 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6490.8507 6.1069005e+10 0.018430618 0.029524275 94.132229 34.025982 6492.8956 5.6888314e+10 0.023988192 0.030140891 94.192408 33.917660 6494.9404 5.2406981e+10 0.029284521 0.030757506 94.252588 33.809338 6496.9853 4.8113929e+10 0.034327685 0.031374122 94.311072 33.707564 6499.0301 4.4981385e+10 0.039362837 0.031990738 94.368139 33.611267 6501.0749 4.2346895e+10 0.044608044 0.032607353 94.425205 33.514971 6503.1198 3.9887008e+10 0.050224112 0.033223969 94.484576 33.409766 6505.1646 3.7357276e+10 0.056330161 0.033840585 94.544752 33.301444 6507.2095 3.4747402e+10 0.063005048 0.034457200 94.603270 33.196108 6509.2543 3.2512939e+10 0.070701977 0.035073816 94.656762 33.099823 6511.2991 3.0573696e+10 0.079535091 0.035690432 94.710255 33.003538 6513.3440 2.8897606e+10 0.089680171 0.036307047 94.763747 32.907253 6515.3888 2.7417558e+10 0.10121947 0.036923663 94.817239 32.810968 6517.4336 2.6049475e+10 0.11403367 0.037540279 94.870731 32.714683 6519.4785 2.4662854e+10 0.12793052 0.038156894 94.928502 32.610697 6521.5233 2.3122481e+10 0.14253339 0.038773510 94.988681 32.502374 6523.5682 2.1554057e+10 0.15321139 0.039319930 95.047352 32.395297 6525.6130 2.0152892e+10 0.16256155 0.039712254 95.097284 32.295433 6527.6578 1.8980596e+10 0.17088816 0.041194070 95.147216 32.195570 6529.7027 1.7932320e+10 0.17627638 0.043355087 95.200667 32.092801 6531.7475 1.6833489e+10 0.17890843 0.046316697 95.260847 31.984478 6533.7924 1.5679822e+10 0.17901353 0.047856314 95.321027 31.876156 6535.8372 1.4597621e+10 0.17750448 0.047861126 95.372481 31.781110 6537.8820 1.3653358e+10 0.17751299 0.049101064 95.422406 31.688391 6539.9269 1.2822515e+10 0.17681213 0.050765580 95.472332 31.595506 6541.9717 1.2075419e+10 0.17433777 0.051011412 95.522257 31.499221 6544.0165 1.1411441e+10 0.17211226 0.051657771 95.572182 31.402936 6546.0614 1.0771986e+10 0.17011309 0.052515037 95.623621 31.303731 6548.1062 1.0114850e+10 0.16907135 0.053699368 95.679788 31.195409 6550.1511 9.4585946e+09 0.16783455 0.055023184 95.735955 31.087087 6552.1959 8.8343785e+09 0.16629555 0.055537458 95.787446 30.987782 6554.2407 8.3053822e+09 0.16415528 0.054837432 95.837378 30.891485 6556.2856 7.8464743e+09 0.16214140 0.053971140 95.887310 30.795188 6558.3304 7.4306268e+09 0.16021028 0.052957748 95.937235 30.698902 6560.3753 7.0635791e+09 0.15772911 0.051935967 95.987161 30.602617 6562.4201 6.7166630e+09 0.15509130 0.050480167 96.037972 30.504624 6564.4649 6.3619933e+09 0.15230103 0.048560889 96.094139 30.396301 6566.5098 5.9811693e+09 0.14994908 0.046894507 96.150306 30.287978 6568.5546 5.6243997e+09 0.14783447 0.045261842 96.202419 30.187473 6570.5995 5.3204838e+09 0.14583114 0.044669197 96.252345 30.091188 6572.6443 5.0634245e+09 0.14360035 0.043861188 96.302270 29.994903 6574.6891 4.8135397e+09 0.14116421 0.042524019 96.354082 29.888444 6576.7340 4.5335775e+09 0.13898573 0.040526583 96.406239 29.780121 6578.7788 4.2631667e+09 0.13670185 0.037419791 96.457609 29.677301 6580.8236 4.0264673e+09 0.13486318 0.035759588 96.507534 29.584583 6582.8685 3.8308704e+09 0.13344405 0.035057456 96.557459 29.491865 6584.9133 3.6630629e+09 0.13179256 0.034017991 96.605432 29.397184 6586.9582 3.5167156e+09 0.13001445 0.033158910 96.651796 29.300886 6589.0030 3.3821779e+09 0.12820969 0.033040030 96.698161 29.204588 6591.0478 3.2467450e+09 0.12595924 0.029147932 96.748837 29.099336 6593.0927 3.0914864e+09 0.12413870 0.027016061 96.800991 28.991013 6595.1375 2.9224128e+09 0.12200798 0.025637832 96.852584 28.885726 6597.1824 2.7742104e+09 0.11971360 0.025665184 96.902512 28.789440 6599.2272 2.6455435e+09 0.11812549 0.024943395 96.952440 28.693155 6601.2720 2.5335800e+09 0.11795857 0.027173800 97.003365 28.593275 6603.3169 2.4097865e+09 0.11681722 0.026475688 97.055519 28.488965 6605.3617 2.2828932e+09 0.11621410 0.026968486 97.107673 28.384655 6607.4065 2.1718142e+09 0.11457214 0.024904221 97.154290 28.288012 6609.4514 2.0813934e+09 0.11148721 0.023840014 97.200648 28.191728 6611.4962 2.0038688e+09 0.10862935 0.024642012 97.247278 28.094227 6613.5411 1.9199333e+09 0.10744224 0.023772107 97.295430 27.989901 6615.5859 1.8263542e+09 0.10584272 0.023269558 97.343581 27.885575 6617.6307 1.7343838e+09 0.10483202 0.023648369 97.390551 27.786549 6619.6756 1.6604114e+09 0.10413010 0.024688920 97.436909 27.690264 6621.7204 1.5967984e+09 0.10319672 0.024850662 97.483268 27.593979 6623.7653 1.5419591e+09 0.10172062 0.024775341 97.529628 27.497694 6625.8101 1.4887532e+09 0.10090201 0.026364289 97.575989 27.401408 6627.8549 1.4382043e+09 0.099416344 0.025647057 97.622441 27.304717 6629.8998 1.3852063e+09 0.098393781 0.025946424 97.670582 27.200406 6631.9446 1.3257815e+09 0.096945199 0.026026719 97.718723 27.096096 6633.9894 1.2654043e+09 0.095769120 0.026325000 97.765871 26.996265 6636.0343 1.2117207e+09 0.094551066 0.026536438 97.812232 26.899981 6638.0791 1.1678011e+09 0.093708402 0.025668195 97.858593 26.803697 6640.1240 1.1216277e+09 0.093736846 0.025255485 97.906302 26.701349 6642.1688 1.0698973e+09 0.093873361 0.025158604 97.954451 26.597023 6644.2136 1.0214316e+09 0.092948032 0.025366696 98.001198 26.494801 6646.2585 9.8177705e+08 0.091969181 0.026053945 98.043992 26.398516 6648.3033 9.5123554e+08 0.090878421 0.027167327 98.086786 26.302231 6650.3482 9.2517623e+08 0.090114045 0.026334940 98.133863 26.202274 6652.3930 8.8807522e+08 0.089552196 0.027358650 98.186017 26.097964 6654.4378 8.5137144e+08 0.088598688 0.027849704 98.238171 25.993654 6656.4827 8.1308525e+08 0.086748278 0.028447057 98.286456 25.889343 6658.5275 7.7202860e+08 0.085282670 0.030996631 98.334600 25.785033 6660.5724 7.3913701e+08 0.083858839 0.032146236 98.380217 25.684514 6662.6172 7.0889988e+08 0.082471316 0.032697992 98.423011 25.588228 6664.6620 6.8287846e+08 0.081508421 0.029783757 98.465806 25.491943 6666.7069 6.6106334e+08 0.081238803 0.027046337 98.512173 25.390295 6668.7517 6.3559774e+08 0.080239481 0.028135980 98.560314 25.285986 6670.7965 6.1079683e+08 0.080352222 0.026959606 98.606891 25.183710 6672.8414 5.8982032e+08 0.080112762 0.027367280 98.646123 25.090979 6674.8862 5.6952542e+08 0.078813555 0.029702377 98.685356 24.998248 6676.9311 5.5321718e+08 0.076688310 0.032313786 98.727902 24.899719 6678.9759 5.3324227e+08 0.076079867 0.030283892 98.776047 24.791397 6681.0207 5.1365110e+08 0.077134227 0.029673267 98.824191 24.683075 6683.0656 4.9219499e+08 0.077749597 0.031284683 98.872332 24.578280 6685.1104 4.6897878e+08 0.077620843 0.032821462 98.920474 24.473970 6687.1553 4.5143719e+08 0.075899317 0.034256314 98.966547 24.374142 6689.2001 4.3389465e+08 0.073334125 0.033835910 99.009342 24.281423 6691.2449 4.2127630e+08 0.072400075 0.032943475 99.052136 24.188704 6693.2898 4.0624151e+08 0.071550873 0.031504680 99.095709 24.089232 6695.3346 3.8865041e+08 0.071131171 0.029798010 99.139841 23.984921 6697.3794 3.7397378e+08 0.070484330 0.030139285 99.184333 23.880250 6699.4243 3.6129958e+08 0.069073494 0.031198939 99.232478 23.771929 6701.4691 3.4974634e+08 0.067289653 0.032097783 99.280622 23.663607 6703.5140 3.3980401e+08 0.067208432 0.034961331 99.323442 23.564600 6705.5588 3.2878725e+08 0.067180334 0.037662041 99.362675 23.471869 6707.6036 3.1949231e+08 0.066721888 0.040100356 99.401907 23.379138 6709.6485 3.0827763e+08 0.065781676 0.040720080 99.445025 23.277216 6711.6933 2.9458046e+08 0.063921670 0.041481037 99.489154 23.172906 6713.7382 2.8442333e+08 0.061974743 0.046356372 99.533284 23.068595 6715.7830 2.7276965e+08 0.060421490 0.048179412 99.577415 22.964284 6717.8278 2.6636406e+08 0.058482859 0.049823063 99.621547 22.859974 6719.8727 2.5546390e+08 0.057296226 0.050540738 99.668923 22.755664 6721.9175 2.4399800e+08 0.057523780 0.050580349 99.717067 22.651354 6723.9623 2.3424258e+08 0.055693609 0.049905662 99.763943 22.547043 6726.0072 2.2307075e+08 0.051997007 0.040951432 99.808075 22.442733 6728.0520 2.1727493e+08 0.051336366 0.039701837 99.852206 22.338423 6730.0969 2.1157250e+08 0.050027850 0.040511715 99.896338 22.234112 6732.1417 2.0573334e+08 0.048474467 0.043766296 99.940469 22.129802 6734.1865 2.0017572e+08 0.047670240 0.049342376 99.984601 22.025491 6736.2314 1.9412145e+08 0.049310918 0.051229752 100.02873 21.921181 6738.2762 1.9012494e+08 0.050312390 0.058841802 100.07286 21.816870 6740.3211 1.8319829e+08 0.049828188 0.064598833 100.11700 21.712560 6742.3659 1.7593646e+08 0.047248242 0.069502326 100.16113 21.608250 6744.4107 1.6854210e+08 0.043131063 0.078111105 100.20387 21.503935 6746.4556 1.6370205e+08 0.040393719 0.073690729 100.24400 21.399609 6748.5004 1.6397238e+08 0.038065773 0.069649584 100.28412 21.295283 6750.5453 1.5747844e+08 0.035210231 0.072935169 100.32767 21.190971 6752.5901 1.5079772e+08 0.032376171 0.073451633 100.37180 21.086660 6754.6349 1.4382654e+08 0.030843996 0.075192428 100.41593 20.982350 6756.6798 1.3810762e+08 0.028172888 0.075916049 100.46006 20.878039 6758.7246 1.3413322e+08 0.028581439 0.075237596 100.50419 20.773728 6760.7694 1.2757926e+08 0.028855496 0.077528565 100.54833 20.672902 6762.8143 1.2201806e+08 0.033605526 0.076737341 100.59246 20.572603 6764.8591 1.1916680e+08 0.035875403 0.079524444 100.63508 20.470797 6766.9040 1.1913081e+08 0.035788799 0.081758521 100.67520 20.366487 6768.9488 1.1737528e+08 0.031084548 0.084270026 100.71532 20.262177 6770.9936 1.1427723e+08 0.027121607 0.089289707 100.75898 20.157866 6773.0385 1.0742829e+08 0.023158654 0.094249340 100.80311 20.053556 6775.0833 1.0240766e+08 0.019172166 0.099208973 100.84568 19.949246 6777.1282 1.0071734e+08 0.015202301 0.10416861 100.88579 19.844935 6779.1730 1.0286557e+08 0.011290292 0.10912824 100.92591 19.740625 6781.2178 1.0135791e+08 0.0073249481 0.11408787 100.97530 19.627046 6783.2627 95594670. 0.0032429465 0.11904750 101.02574 19.512416 6785.3075 89297435. -0.00090747316 0.12400714 101.06877 19.405188 6787.3523 84316682. -0.0050691086 0.12896677 101.10889 19.300878 6789.3972 83486138. -0.0090690855 0.13392640 101.14901 19.196567 6791.4420 84299102. -0.012988560 0.13888603 101.18913 19.092257 6793.4869 84218974. -0.016952324 0.14384567 101.22925 18.987947 6795.5317 79947421. -0.021192263 0.14880530 101.27356 18.876082 6797.5765 73843397. -0.025666226 0.15376493 101.31942 18.761453 6799.6214 66896720. -0.030407142 0.15872457 101.36432 18.652503 6801.6662 65666563. -0.034663946 0.16368420 101.40846 18.548178 6803.7111 69282667. -0.038391299 0.16864383 101.45236 18.443853 6805.7559 68946140. -0.042723272 0.17360346 101.49248 18.339542 6807.8007 66641159. -0.047584884 0.17856310 101.53261 18.235231 6809.8456 63177650. -0.053158126 0.18352273 101.57597 18.125077 6811.8904 55756705. -0.060802675 0.18848236 101.62182 18.010447 6813.9352 51487838. -0.070092337 0.19344199 101.66546 17.899796 6815.9801 49819268. -0.084242335 0.19840163 101.70558 17.795485 6818.0249 50583046. -0.14374048 0.20336126 101.74570 17.691175 6820.0698 50496717. -0.098988303 0.20832089 101.79094 17.577651 6822.1146 45057544. 0.0037688948 0.21328053 101.83679 17.463022