# # 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 = 51.272983 km # Date (UTC) = 2016-01-30T10:10:19.938 # Date (julian) = 2457417.92384188 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6502.9413 6.6067225e+10 0.058290243 0.033170144 97.938627 51.356601 6505.0959 6.0988251e+10 0.068105463 0.033819879 98.115027 51.146489 6507.2506 5.5228116e+10 0.078007811 0.034469614 98.297883 50.921789 6509.4053 4.9723014e+10 0.088131301 0.035119349 98.446667 50.732427 6511.5600 4.4762206e+10 0.098535976 0.035769084 98.595474 50.537784 6513.7146 4.0927678e+10 0.10947715 0.036418819 98.744290 50.343628 6515.8693 3.7425088e+10 0.12077093 0.037068553 98.893109 50.154221 6518.0240 3.4230062e+10 0.13242375 0.037718288 99.041900 49.964853 6520.1786 3.1314301e+10 0.14440942 0.038368023 99.188391 49.773173 6522.3333 2.8247373e+10 0.15559818 0.039004531 99.330445 49.577002 6524.4880 2.5450489e+10 0.16212615 0.039600316 99.472498 49.386666 6526.6426 2.3012101e+10 0.16749360 0.040341824 99.605457 49.209387 6528.7973 2.0910518e+10 0.17190686 0.042074994 99.723830 49.051557 6530.9520 1.9133849e+10 0.17553799 0.045161458 99.856631 48.870367 6533.1067 1.7475308e+10 0.17951496 0.047564912 99.997771 48.675125 6535.2613 1.5818815e+10 0.18063958 0.048110935 100.13306 48.485718 6537.4160 1.4317554e+10 0.18090503 0.048881348 100.26835 48.291896 6539.5707 1.2902933e+10 0.18013103 0.050334401 100.40245 48.096917 6541.7253 1.1651088e+10 0.17761517 0.051091310 100.53094 47.907554 6543.8800 1.0688523e+10 0.17462933 0.051612854 100.64847 47.740140 6546.0347 9.8803531e+09 0.17165918 0.052493056 100.76120 47.582309 6548.1893 9.1286697e+09 0.16990262 0.053724190 100.88850 47.389128 6550.3440 8.3511728e+09 0.16791331 0.055071497 101.01703 47.195960 6552.4987 7.5850548e+09 0.16592237 0.055461249 101.14555 47.006556 6554.6534 6.9691156e+09 0.16349511 0.054846091 101.24795 46.842188 6556.8080 6.4095816e+09 0.16100414 0.053894332 101.35459 46.673765 6558.9627 5.9087329e+09 0.15801348 0.052418974 101.48308 46.484406 6561.1174 5.4702471e+09 0.15497779 0.051314848 101.59231 46.313498 6563.2720 5.0889296e+09 0.15225214 0.049613691 101.69377 46.150029 6565.4267 4.7786014e+09 0.14946089 0.047833874 101.81429 45.962215 6567.5814 4.4316057e+09 0.14722449 0.046125625 101.93603 45.769718 6569.7360 4.0996516e+09 0.14521218 0.044900329 102.05777 45.573594 6571.8907 3.8191706e+09 0.14309072 0.044260005 102.15407 45.415061 6574.0454 3.6029646e+09 0.14001605 0.042833210 102.25107 45.256060 6576.2000 3.4360630e+09 0.13702931 0.041141134 102.35253 45.092590 6578.3547 3.2545043e+09 0.13375017 0.038089474 102.45986 44.917876 6580.5094 3.0873126e+09 0.13039879 0.036050005 102.57486 44.728471 6582.6641 2.9226209e+09 0.12738095 0.035113086 102.67154 44.563843 6584.8187 2.7606636e+09 0.12429179 0.034069519 102.76961 44.395681 6586.9734 2.6009603e+09 0.12111016 0.033158713 102.87782 44.206321 6589.1281 2.4424288e+09 0.11807660 0.032791905 102.97733 44.035152 6591.2827 2.2966822e+09 0.11491625 0.028882875 103.07315 43.871683 6593.4374 2.1886876e+09 0.11235205 0.026695566 103.16374 43.713449 6595.5921 2.0858151e+09 0.10973129 0.025684971 103.25672 43.549695 6597.7467 1.9738024e+09 0.10775339 0.025487083 103.36495 43.353525 6599.9014 1.8626706e+09 0.10697957 0.024983946 103.46098 43.183277 6602.0561 1.7533812e+09 0.10662352 0.027468773 103.55117 43.025444 6604.2108 1.6671518e+09 0.10527292 0.026196416 103.64135 42.862558 6606.3654 1.5767266e+09 0.10482801 0.026847308 103.73296 42.695806 6608.5201 1.4835654e+09 0.10237076 0.023718620 103.83443 42.506399 6610.6748 1.3950829e+09 0.099542226 0.024647700 103.92857 42.333838 6612.8294 1.3172948e+09 0.098282045 0.023701031 104.01876 42.170370 6614.9841 1.2550240e+09 0.097135809 0.023262484 104.10402 42.011835 6617.1388 1.1938141e+09 0.095794151 0.023485259 104.18857 41.853431 6619.2934 1.1373788e+09 0.095084782 0.024596717 104.27312 41.689965 6621.4481 1.0877435e+09 0.094054963 0.024940918 104.35767 41.528352 6623.6028 1.0427513e+09 0.092202330 0.024715147 104.44221 41.370550 6625.7575 9.9268673e+08 0.090911414 0.026301471 104.53237 41.191534 6627.9121 9.3622600e+08 0.089128701 0.025669149 104.62631 40.998223 6630.0668 8.8209117e+08 0.087747755 0.025928466 104.71086 40.840393 6632.2215 8.3256110e+08 0.085961840 0.026058900 104.79372 40.680867 6634.3761 7.9198765e+08 0.084348341 0.026354279 104.87264 40.517398 6636.5308 7.5117014e+08 0.082747947 0.026343621 104.95155 40.356898 6638.6855 7.1497788e+08 0.081657267 0.025641778 105.03047 40.199067 6640.8401 6.8339305e+08 0.082237755 0.025167860 105.10937 40.037018 6642.9948 6.5177951e+08 0.082191697 0.025192406 105.18827 39.873580 6645.1495 6.2201646e+08 0.081517155 0.025521710 105.26719 39.715627 6647.3041 5.8954466e+08 0.080726004 0.026597916 105.34610 39.557796 6649.4588 5.6262281e+08 0.080016515 0.027001229 105.42502 39.399965 6651.6135 5.3675126e+08 0.079849962 0.026954315 105.50393 39.239710 6653.7682 5.1135304e+08 0.079521563 0.027917855 105.58285 39.076241 6655.9228 4.8942773e+08 0.078025751 0.027991530 105.65807 38.916471 6658.0775 4.6828133e+08 0.076759825 0.030198522 105.73134 38.758640 6660.2322 4.4599728e+08 0.075506115 0.031837026 105.80463 38.595837 6662.3868 4.2570433e+08 0.074244189 0.032827233 105.87851 38.432979 6664.5415 4.0283755e+08 0.073437443 0.030224739 105.95741 38.275176 6666.6962 3.8739025e+08 0.073300833 0.027044254 106.03444 38.117364 6668.8508 3.7345176e+08 0.072135793 0.028223712 106.10772 37.959534 6671.0055 3.5451006e+08 0.072248111 0.026865427 106.18541 37.780254 6673.1602 3.3420617e+08 0.071916679 0.027698786 106.26595 37.587194 6675.3149 3.1474476e+08 0.070240643 0.030401420 106.33922 37.429363 6677.4695 3.0288792e+08 0.068446046 0.031690740 106.41250 37.269801 6679.6242 2.9015471e+08 0.068246224 0.029751965 106.48578 37.106332 6681.7789 2.7783111e+08 0.069013065 0.030254891 106.55605 36.945886 6683.9335 2.6598730e+08 0.069198334 0.032556685 106.62368 36.788086 6686.0882 2.5654878e+08 0.068550033 0.033812402 106.69559 36.630262 6688.2429 2.4672998e+08 0.066035602 0.033841254 106.76887 36.472430 6690.3975 2.2921825e+08 0.064585777 0.033070305 106.83660 36.314597 6692.5522 2.1667732e+08 0.063798219 0.032124077 106.90221 36.160496 6694.7069 2.0705430e+08 0.063196253 0.030270294 106.96019 36.020386 6696.8616 2.0281650e+08 0.062764374 0.030033743 107.01953 35.877780 6699.0162 2.0149895e+08 0.061438559 0.031575464 107.08716 35.719947 6701.1709 1.9359531e+08 0.059663906 0.031660193 107.15481 35.562115 6703.3256 1.8513854e+08 0.059521809 0.034489893 107.22245 35.404284 6705.4802 1.8062702e+08 0.059537428 0.037522360 107.29009 35.243112 6707.6349 1.7543443e+08 0.059115138 0.040095877 107.35774 35.079643 6709.7896 1.7178049e+08 0.058042456 0.040630338 107.42537 34.920815 6711.9442 1.7318187e+08 0.055813223 0.041766519 107.49274 34.763013 6714.0989 1.7146656e+08 0.053561304 0.047310844 107.55475 34.605182 6716.2536 1.7514165e+08 0.051683928 0.048774859 107.61828 34.447351 6718.4082 1.7326706e+08 0.049356330 0.050448231 107.68592 34.289518 6720.5629 1.6791319e+08 0.048829322 0.050354542 107.75077 34.131686 6722.7176 1.6335815e+08 0.048087694 0.049718078 107.81277 33.973855 6724.8723 1.5507590e+08 0.043999805 0.042642744 107.87885 33.816024 6727.0269 1.4803860e+08 0.041914993 0.040924510 107.94649 33.658194 6729.1816 1.3691128e+08 0.041316213 0.040924388 108.00878 33.495017 6731.3363 1.2701649e+08 0.039303098 0.042419260 108.07079 33.332535 6733.4909 1.1874375e+08 0.037981151 0.046589749 108.13278 33.174735 6735.6456 1.1171867e+08 0.038837181 0.049978792 108.19478 33.016921 6737.8003 1.0571996e+08 0.040171839 0.056684867 108.25679 32.859088 6739.9549 1.0033290e+08 0.040087783 0.063995225 108.31879 32.701257 6742.1096 92404489. 0.037680781 0.068877851 108.38080 32.543426 6744.2643 88597326. 0.033218720 0.077997830 108.43800 32.385595 6746.4190 82533431. 0.030592503 0.074116451 108.49481 32.227764 6748.5736 74618826. 0.028117534 0.070034762 108.55681 32.069931 6750.7283 69322379. 0.025276416 0.073247724 108.61882 31.912099 6752.8830 62422023. 0.022324549 0.073112721 108.68082 31.754268 6755.0376 60741316. 0.020779592 0.074588845 108.73984 31.596453 6757.1923 57345177. 0.018386928 0.076156464 108.79619 31.438651 6759.3470 56674442. 0.019609754 0.075903685 108.85682 31.280827 6761.5016 56598711. 0.021821839 0.078009670 108.91882 31.122997 6763.6563 58163959. 0.026318982 0.078436580 108.97530 30.965165 6765.8110 57376008. 0.028179036 0.079679241 109.03166 30.807333 6767.9657 55872244. 0.025145931 0.080894485 109.08804 30.649501 6770.1203 57279473. 0.019983105 0.087171535 109.14441 30.491670 6772.2750 56243133. 0.014475296 0.092397557 109.20077 30.333839 6774.4297 53489287. 0.0061953595 0.097623578 109.26086 30.176007 6776.5843 49578444. -0.024807805 0.10284960 109.32286 30.018176 6778.7390 49108858. -0.0063821010 0.10807562 109.37988 29.860344 6780.8937 49844133. 0.036039250 0.11330164 109.43674 29.699018