# # 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 = 35.438499 km # Date (UTC) = 2017-01-23T09:45:16.056 # Date (julian) = 2457776.90643583 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6493.9207 1.2471781e+11 0.018585647 0.030450012 -20.913165 57.180909 6495.2562 1.1284369e+11 0.022996031 0.030852732 -21.031956 57.093564 6496.5917 1.0584970e+11 0.027800791 0.031255451 -21.150746 57.006218 6497.9272 9.7470699e+10 0.032709515 0.031658170 -21.267478 56.916837 6499.2627 9.1179445e+10 0.038073659 0.032060889 -21.382751 56.826015 6500.5982 8.4126848e+10 0.043637029 0.032463609 -21.498025 56.735192 6501.9338 7.7854898e+10 0.049550934 0.032866328 -21.613315 56.646882 6503.2693 7.2255125e+10 0.055848538 0.033269047 -21.728611 56.559537 6504.6048 6.6932104e+10 0.062472753 0.033671766 -21.843907 56.472191 6505.9403 6.1924995e+10 0.069440281 0.034074485 -21.956198 56.381839 6507.2758 5.7586060e+10 0.076849601 0.034477205 -22.068001 56.291000 6508.6113 5.3780798e+10 0.084694247 0.034879924 -22.179804 56.200174 6509.9468 5.0560194e+10 0.092986290 0.035282643 -22.291606 56.112809 6511.2823 4.7556948e+10 0.10159470 0.035685362 -22.403409 56.025463 6512.6178 4.4461013e+10 0.11035653 0.036088082 -22.514736 55.937642 6513.9533 4.1275135e+10 0.11921102 0.036490801 -22.623044 55.846801 6515.2888 3.8143074e+10 0.12812543 0.036893520 -22.731353 55.755961 6516.6244 3.5281942e+10 0.13714003 0.037296239 -22.835423 55.669496 6517.9599 3.2791429e+10 0.14592447 0.037698958 -22.928258 55.594630 6519.2954 3.0733781e+10 0.15416369 0.038101678 -23.021092 55.519764 6520.6309 2.8968807e+10 0.16173850 0.038504397 -23.113926 55.444898 6521.9664 2.7247938e+10 0.16873645 0.038907116 -23.217956 55.355104 6523.3019 2.5476656e+10 0.17189259 0.039253938 -23.322771 55.264265 6524.6374 2.3587838e+10 0.17538893 0.039653403 -23.427584 55.173427 6525.9729 2.1779299e+10 0.17653341 0.039671178 -23.532378 55.082605 6527.3084 2.0032541e+10 0.18010844 0.040940392 -23.637172 54.991782 6528.6439 1.8444900e+10 0.18118361 0.041953318 -23.738204 54.903677 6529.9794 1.7136625e+10 0.18367495 0.043795954 -23.825048 54.825817 6531.3150 1.6199913e+10 0.18379389 0.045687098 -23.911893 54.747957 6532.6505 1.5486291e+10 0.18536361 0.047227585 -23.998737 54.670098 6533.9860 1.4787361e+10 0.18495328 0.047938596 -24.098180 54.580942 6535.3215 1.3984040e+10 0.18478414 0.048084839 -24.199501 54.490103 6536.6570 1.3108943e+10 0.18391918 0.048378327 -24.300782 54.399264 6537.9925 1.2301065e+10 0.18352277 0.049153145 -24.398621 54.308424 6539.3280 1.1480331e+10 0.18248861 0.050040674 -24.496448 54.217583 6540.6635 1.0719034e+10 0.18120380 0.051167565 -24.592673 54.128637 6541.9990 1.0080165e+10 0.17946438 0.051002554 -24.679518 54.050777 6543.3345 9.5582761e+09 0.17747322 0.051469694 -24.766363 53.972917 6544.6700 9.1413240e+09 0.17572181 0.052187901 -24.853207 53.895057 6546.0056 8.6782980e+09 0.17273257 0.052469096 -24.946092 53.806727 6547.3411 8.1181763e+09 0.17152175 0.053417064 -25.040425 53.715887 6548.6766 7.5361992e+09 0.16925307 0.053869693 -25.134758 53.625046 6550.0121 7.0148353e+09 0.16831882 0.054988384 -25.219190 53.546465 6551.3476 6.6093067e+09 0.16623635 0.055357761 -25.303040 53.468605 6552.6831 6.3093131e+09 0.16490180 0.055414831 -25.386890 53.390745 6554.0186 6.0176256e+09 0.16263504 0.054832771 -25.474970 53.305030 6555.3541 5.6967457e+09 0.16123321 0.054555821 -25.565810 53.214190 6556.6896 5.3583380e+09 0.15938313 0.053911738 -25.656649 53.123350 6558.0251 5.0462706e+09 0.15764324 0.053217886 -25.740071 53.042153 6559.3606 4.8150304e+09 0.15532416 0.052346475 -25.820926 52.964293 6560.6962 4.6567961e+09 0.15282171 0.051646637 -25.901781 52.886434 6562.0317 4.5087530e+09 0.15066620 0.050849775 -25.986659 52.803342 6563.3672 4.3314259e+09 0.14808989 0.049503634 -26.077480 52.712521 6564.7027 4.1412158e+09 0.14603109 0.048453142 -26.168301 52.621700 6566.0382 3.9486574e+09 0.14357727 0.047161280 -26.252112 52.537889 6567.3737 3.7951427e+09 0.14201075 0.046301215 -26.329972 52.460028 6568.7092 3.6867784e+09 0.13964523 0.045119731 -26.407833 52.382167 6570.0447 3.5652944e+09 0.13809822 0.044898986 -26.487605 52.301690 6571.3802 3.4225541e+09 0.13585790 0.044399428 -26.574951 52.210851 6572.7157 3.2506617e+09 0.13401878 0.043820273 -26.662296 52.120012 6574.0512 3.0673438e+09 0.13161049 0.042830393 -26.745407 52.032561 6575.3868 2.9223522e+09 0.12966249 0.041986672 -26.820273 51.951706 6576.7223 2.8184319e+09 0.12719426 0.040540054 -26.895139 51.870851 6578.0578 2.7261063e+09 0.12479437 0.038558386 -26.970070 51.789943 6579.3933 2.6242775e+09 0.12248633 0.036854294 -27.057351 51.699154 6580.7288 2.5003822e+09 0.12071480 0.035847246 -27.144697 51.608314 6582.0643 2.3782697e+09 0.11936815 0.035276298 -27.229909 51.519263 6583.3998 2.2746148e+09 0.11777521 0.034819301 -27.301780 51.441404 6584.7353 2.1963463e+09 0.11623143 0.034114956 -27.373651 51.363544 6586.0708 2.1229178e+09 0.11430199 0.033170381 -27.445522 51.285684 6587.4063 2.0382536e+09 0.11312198 0.033248398 -27.526961 51.194669 6588.7418 1.9347585e+09 0.11160235 0.033132189 -27.610814 51.100335 6590.0774 1.8309867e+09 0.11019307 0.030918179 -27.694667 51.006001 6591.4129 1.7358127e+09 0.10821446 0.028736043 -27.767300 50.927093 6592.7484 1.6545402e+09 0.10667558 0.027346629 -27.839171 50.849233 6594.0839 1.5966609e+09 0.10468541 0.026126478 -27.911042 50.771374 6595.4194 1.5423297e+09 0.10269065 0.025667063 -27.981125 50.693513 6596.7549 1.4849011e+09 0.10070913 0.025723842 -28.050001 50.615652 6598.0904 1.4310997e+09 0.099159386 0.025364001 -28.118877 50.537791 6599.4259 1.3716466e+09 0.097998114 0.024955347 -28.190713 50.455684 6600.7614 1.3190596e+09 0.097576791 0.026555226 -28.271071 50.361350 6602.0969 1.2554644e+09 0.096851744 0.027433913 -28.351429 50.267016 6603.4324 1.1825952e+09 0.095691637 0.026407268 -28.427246 50.179199 6604.7680 1.1216909e+09 0.095013442 0.026527262 -28.496122 50.101340 6606.1035 1.0829129e+09 0.094210154 0.027318045 -28.564998 50.023480 6607.4390 1.0600924e+09 0.092624031 0.024840192 -28.633874 49.945452 6608.7745 1.0252961e+09 0.090566811 0.023711894 -28.702751 49.864597 6610.1100 9.9376376e+08 0.088935547 0.024108071 -28.771628 49.783741 6611.4455 9.5819483e+08 0.087263898 0.024674359 -28.840505 49.702886 6612.7810 9.1879651e+08 0.086824348 0.023737213 -28.915097 49.614885 6614.1165 8.7826881e+08 0.086198287 0.023860217 -28.991946 49.524063 6615.4520 8.2282033e+08 0.085603008 0.023265439 -29.068795 49.433240 6616.7875 7.8235808e+08 0.084966826 0.023405903 -29.136276 49.350933 6618.1230 7.5897962e+08 0.084701781 0.023863709 -29.202157 49.270079 6619.4586 7.2882906e+08 0.084301960 0.024636556 -29.268039 49.189225 6620.7941 7.0594309e+08 0.083805196 0.025023083 -29.332379 49.109912 6622.1296 6.8622233e+08 0.083004943 0.024723505 -29.395267 49.032051 6623.4651 6.6362030e+08 0.081882467 0.024664131 -29.458154 48.954190 6624.8006 6.5193676e+08 0.081040845 0.025290861 -29.523496 48.873436 6626.1361 6.2450665e+08 0.080177199 0.026417502 -29.600360 48.779103 6627.4716 5.9294050e+08 0.079009621 0.025498985 -29.677224 48.684769 6628.8071 5.6067554e+08 0.078443744 0.026030792 -29.749708 48.595598 6630.1426 5.3191798e+08 0.077709880 0.025928653 -29.812595 48.517739 6631.4781 5.1321112e+08 0.076538068 0.025979335 -29.875483 48.439879 6632.8136 5.0086618e+08 0.075735634 0.026129908 -29.938370 48.362019 6634.1492 4.8501096e+08 0.074677335 0.026337723 -29.998340 48.281242 6635.4847 4.5621949e+08 0.073970928 0.026472470 -30.058232 48.200387 6636.8202 4.4360230e+08 0.073075499 0.026231247 -30.118124 48.119532 6638.1557 4.2890792e+08 0.072618136 0.025664860 -30.186573 48.032339 6639.4912 4.1662444e+08 0.072464231 0.025452513 -30.259944 47.941499 6640.8267 4.0004239e+08 0.073077433 0.025169504 -30.333315 47.850659 6642.1622 3.7555771e+08 0.073285555 0.025158334 -30.396273 47.767534 6643.4977 3.6509461e+08 0.072821652 0.025267768 -30.456165 47.686679 6644.8332 3.5512376e+08 0.072410054 0.025433660 -30.516057 47.605824 6646.1687 3.4574362e+08 0.071742836 0.026007490 -30.575949 47.526266 6647.5042 3.3445008e+08 0.071272309 0.026703267 -30.635842 47.448405 6648.8398 3.2365844e+08 0.070543799 0.027526418 -30.695735 47.370544 6650.1753 3.1326516e+08 0.070526171 0.026295359 -30.756566 47.291135 6651.5108 2.9918542e+08 0.070263586 0.026875598 -30.826443 47.196802 6652.8463 2.9042814e+08 0.070142862 0.027483367 -30.896320 47.102468 6654.1818 2.7733484e+08 0.069601345 0.027958782 -30.963188 47.011259 6655.5173 2.6589280e+08 0.068651600 0.027823965 -31.020086 46.930404 6656.8528 2.5339731e+08 0.067584777 0.028771921 -31.076983 46.849549 6658.1883 2.4049257e+08 0.066875263 0.030395062 -31.133881 46.768694 6659.5238 2.3715166e+08 0.065906797 0.031725328 -31.193451 46.690512 6660.8593 2.3154873e+08 0.065052985 0.032407091 -31.253344 46.612652 6662.1948 2.2508250e+08 0.064253303 0.032934952 -31.313237 46.534792 6663.5304 2.1746217e+08 0.063469646 0.032336239 -31.371473 46.455275 6664.8659 2.0700600e+08 0.063344151 0.029037937 -31.428372 46.374420 6666.2014 2.0601930e+08 0.063213719 0.026947835 -31.485270 46.293564 6667.5369 2.0295188e+08 0.062843465 0.027300663 -31.543449 46.210574 6668.8724 1.9456233e+08 0.062054046 0.028242776 -31.606338 46.119735 6670.2079 1.8322963e+08 0.062313879 0.027232317 -31.669226 46.028896 6671.5434 1.6535717e+08 0.062284005 0.026873092 -31.730008 45.941568 6672.8789 1.5887568e+08 0.062151882 0.027389035 -31.786906 45.860713 6674.2144 1.5953218e+08 0.061432739 0.029135673 -31.843804 45.779858 6675.5499 1.5840518e+08 0.060130394 0.030851683 -31.900658 45.699003 6676.8854 1.5522399e+08 0.058917003 0.032284387 -31.954569 45.618148 6678.2210 1.5121468e+08 0.058681009 0.030788831 -32.008473 45.537293 6679.5565 1.4689171e+08 0.058723663 0.029807936 -32.062377 45.456438 6680.8920 1.3983966e+08 0.059415330 0.029634030 -32.124670 45.368874 6682.2275 1.2772547e+08 0.059854956 0.030598346 -32.191039 45.278052 6683.5630 1.1871934e+08 0.060061839 0.032013647 -32.257408 45.187230 6684.8985 1.1458146e+08 0.060038850 0.032699687 -32.311250 45.104484 6686.2340 1.1515668e+08 0.059439923 0.033897233 -32.362158 45.023630 6687.5695 1.1128387e+08 0.057998277 0.034025275 -32.413067 44.942775 6688.9050 1.0311081e+08 0.056130072 0.033994101 -32.465386 44.861921 6690.2405 1.0183902e+08 0.055687212 0.033088298 -32.519289 44.781066 6691.5760 99431370. 0.055091334 0.032865355 -32.573193 44.700211 6692.9116 96133950. 0.054723751 0.031706798 -32.627096 44.619750 6694.2471 91988618. 0.054093350 0.030914757 -32.680999 44.541889 6695.5826 84430478. 0.054011730 0.029752462 -32.734903 44.464028 6696.9181 82638420. 0.053636700 0.030057229 -32.788806 44.386167 6698.2536 82507785. 0.052998061 0.030565897 -32.847061 44.295254 6699.5891 78620603. 0.051760889 0.031046864 -32.906457 44.200921 6700.9246 77844874. 0.050157990 0.031353525 -32.965853 44.106587 6702.2601 72598000. 0.048513704 0.033084434 -33.017354 44.024792 6703.5956 66778927. 0.045862416 0.035165678 -33.068262 43.943938 6704.9311 61473656. 0.028834031 0.036634789 -33.119170 43.863084 6706.2666 55733199. 0.041175719 0.038910476 -33.170079 43.783998 6707.6022 57019710. 0.072202577 0.040100569 -33.220988 43.706138