# # 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 = 48.027545 km # Date (UTC) = 2011-12-22T04:55:53.062 # Date (julian) = 2455917.70547526 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6488.0579 2.9334688e+11 0.025258819 0.028682100 41.615654 45.911797 6490.1015 2.6115467e+11 0.031893603 0.029298338 41.533673 45.822687 6492.1451 2.3025827e+11 0.038422727 0.029914576 41.451692 45.733577 6494.1887 2.0207595e+11 0.044755536 0.030530814 41.365130 45.636284 6496.2322 1.7442936e+11 0.050951505 0.031147053 41.276921 45.536047 6498.2758 1.4886849e+11 0.056884420 0.031763291 41.190218 45.438498 6500.3194 1.2783224e+11 0.062353758 0.032379529 41.108248 45.349400 6502.3630 1.1133274e+11 0.067231969 0.032995767 41.026278 45.260302 6504.4066 9.8283871e+10 0.071548749 0.033612005 40.945860 45.169652 6506.4502 8.7221638e+10 0.075526480 0.034228243 40.867453 45.076991 6508.4938 7.8151107e+10 0.079583509 0.034844481 40.789046 44.984329 6510.5373 7.0148835e+10 0.084232214 0.035460719 40.710640 44.893911 6512.5809 6.3455931e+10 0.090110970 0.036076957 40.632235 44.804813 6514.6245 5.7588988e+10 0.097692835 0.036693195 40.553829 44.715715 6516.6681 5.1987124e+10 0.10719605 0.037309433 40.467339 44.617430 6518.7117 4.6611938e+10 0.11872300 0.037925671 40.379116 44.517178 6520.7553 4.1597042e+10 0.13233958 0.038541910 40.294132 44.420606 6522.7989 3.7384140e+10 0.14610975 0.039126444 40.215725 44.331508 6524.8425 3.4060156e+10 0.15715504 0.039726246 40.137319 44.242410 6526.8860 3.1390447e+10 0.16479440 0.040596997 40.060780 44.151444 6528.9296 2.8971023e+10 0.16849024 0.042179958 39.985938 44.058781 6530.9732 2.6807699e+10 0.16992090 0.045191179 39.911096 43.966118 6533.0168 2.4768671e+10 0.17198509 0.047526727 39.836254 43.876015 6535.0604 2.2888343e+10 0.17194837 0.048198101 39.761412 43.786917 6537.1040 2.1196564e+10 0.17104781 0.048734245 39.686570 43.697819 6539.1476 1.9662105e+10 0.16989585 0.049822246 39.611719 43.608710 6541.1911 1.8337260e+10 0.16862539 0.051264541 39.536866 43.519600 6543.2347 1.7122144e+10 0.16733216 0.051443500 39.461445 43.429303 6545.2783 1.5914616e+10 0.16625722 0.052458060 39.381255 43.329066 6547.3219 1.4721437e+10 0.16512050 0.053409779 39.301065 43.228829 6549.3655 1.3565595e+10 0.16380616 0.054338746 39.224151 43.133233 6551.4091 1.2545467e+10 0.16287141 0.055379344 39.149309 43.040572 6553.4527 1.1707753e+10 0.16188073 0.055107518 39.074467 42.947910 6555.4963 1.0959630e+10 0.16067899 0.054436394 39.002500 42.858123 6557.5398 1.0286814e+10 0.15943535 0.053527735 38.931221 42.769026 6559.5834 9.6590669e+09 0.15756413 0.052321329 38.859942 42.679928 6561.6270 9.0697659e+09 0.15534799 0.051063704 38.788664 42.590829 6563.6706 8.5683897e+09 0.15292176 0.049152640 38.717385 42.501731 6565.7142 8.1071595e+09 0.15077085 0.047507431 38.644367 42.410459 6567.7578 7.6385503e+09 0.14897377 0.045976473 38.564165 42.310207 6569.8014 7.1496147e+09 0.14722382 0.044904580 38.483963 42.209955 6571.8449 6.6707326e+09 0.14554135 0.044272505 38.412518 42.115025 6573.8885 6.2520184e+09 0.14349807 0.042944457 38.344804 42.022362 6575.9321 5.9012740e+09 0.14189724 0.041439502 38.277090 41.929700 6577.9757 5.5903455e+09 0.14023380 0.038687779 38.209376 41.840228 6580.0193 5.3001428e+09 0.13839420 0.036502926 38.141662 41.751130 6582.0629 5.0392050e+09 0.13653283 0.035276685 38.073947 41.662032 6584.1065 4.7919094e+09 0.13469598 0.034457517 38.006232 41.572934 6586.1500 4.5573883e+09 0.13296869 0.033169356 37.938516 41.483835 6588.1936 4.3266137e+09 0.13171015 0.033315266 37.868401 41.390443 6590.2372 4.0851514e+09 0.12982457 0.030620797 37.792222 41.286197 6592.2808 3.8361329e+09 0.12770837 0.027800776 37.716042 41.181951 6594.3244 3.6040442e+09 0.12556811 0.025994447 37.646537 41.089654 6596.3680 3.4011139e+09 0.12300632 0.025725601 37.578813 41.000544 6598.4116 3.2397611e+09 0.12104052 0.025210668 37.511089 40.911435 6600.4552 3.0972537e+09 0.12031903 0.025925589 37.443374 40.822336 6602.4987 2.9542838e+09 0.11920717 0.027091028 37.375660 40.733238 6604.5423 2.8163457e+09 0.11766071 0.026393293 37.308581 40.644140 6606.5859 2.6888345e+09 0.11633982 0.026451095 37.244430 40.555042 6608.6295 2.5794214e+09 0.11303559 0.023715727 37.180279 40.465944 6610.6731 2.4630796e+09 0.10952603 0.024646098 37.113144 40.371209 6612.7167 2.3381326e+09 0.10747968 0.023785281 37.040973 40.266963 6614.7603 2.2016735e+09 0.10579068 0.023416703 36.968802 40.162717 6616.8038 2.0790032e+09 0.10398380 0.023408463 36.903666 40.071761 6618.8474 1.9753637e+09 0.10311743 0.024410708 36.839507 39.982652 6620.8910 1.8790205e+09 0.10246970 0.025054328 36.775348 39.893543 6622.9346 1.7976743e+09 0.10126515 0.024509232 36.711198 39.804444 6624.9782 1.7273128e+09 0.099963847 0.025385931 36.647047 39.715346 6627.0218 1.6585025e+09 0.097966372 0.025325223 36.581827 39.623278 6629.0654 1.5828857e+09 0.097023254 0.026097287 36.513667 39.523042 6631.1090 1.5020886e+09 0.095487869 0.025941833 36.445506 39.422805 6633.1525 1.4241935e+09 0.094333660 0.026178885 36.380443 39.328419 6635.1961 1.3676213e+09 0.092841501 0.026429199 36.316293 39.235756 6637.2397 1.3146047e+09 0.091341634 0.026044009 36.252142 39.143094 6639.2833 1.2577201e+09 0.090407910 0.025526818 36.184115 39.043109 6641.3269 1.1978531e+09 0.090789859 0.025149410 36.115955 38.942872 6643.3705 1.1359688e+09 0.090053408 0.025248555 36.051369 38.847892 6645.4141 1.0839205e+09 0.088892614 0.025645655 35.990773 38.758783 6647.4576 1.0392615e+09 0.087558403 0.026678731 35.930178 38.669673 6649.5012 9.9757833e+08 0.086285761 0.026942767 35.869589 38.580571 6651.5448 9.6219863e+08 0.085459417 0.026901689 35.809003 38.491473 6653.5884 9.2734641e+08 0.084539317 0.027826079 35.748417 38.402375 6655.6320 8.8976924e+08 0.082657792 0.027871355 35.681307 38.303685 6657.6756 8.4649124e+08 0.080794003 0.029684758 35.613146 38.203448 6659.7192 8.0265481e+08 0.079080584 0.031684580 35.549072 38.105992 6661.7627 7.6398080e+08 0.077457342 0.032923434 35.492049 38.013330 6663.8063 7.3108885e+08 0.076070283 0.032259757 35.435026 37.920668 6665.8499 7.0209003e+08 0.076079791 0.027154503 35.371753 37.823756 6667.8935 6.6619820e+08 0.075583297 0.027431659 35.303593 37.723519 6669.9371 6.3199740e+08 0.075096073 0.027393241 35.236179 37.624028 6671.9807 6.0060684e+08 0.074947328 0.026879324 35.179149 37.534918 6674.0243 5.7557750e+08 0.074200642 0.028975262 35.122118 37.445808 6676.0679 5.5574584e+08 0.071997039 0.031757456 35.063226 37.353789 6678.1114 5.3235495e+08 0.071083208 0.030862077 34.999072 37.253552 6680.1550 5.0995290e+08 0.071324567 0.029474893 34.934919 37.153315 6682.1986 4.9076361e+08 0.071913128 0.030576291 34.876238 37.061626 6684.2422 4.7377849e+08 0.071923178 0.032666382 34.819216 36.972528 6686.2858 4.5924975e+08 0.070972010 0.033927359 34.762193 36.883430 6688.3294 4.4216715e+08 0.068385335 0.033861221 34.698316 36.783622 6690.3730 4.2230421e+08 0.066756304 0.033073122 34.634164 36.683384 6692.4165 4.0510720e+08 0.065691164 0.032281619 34.570012 36.583147 6694.4601 3.8374003e+08 0.064824961 0.030616127 34.505860 36.482910 6696.5037 3.6444738e+08 0.064416299 0.029885071 34.441709 36.382673 6698.5473 3.4851544e+08 0.063239658 0.030969057 34.387966 36.293278 6700.5909 3.3600382e+08 0.061396902 0.031105999 34.334508 36.204180 6702.6345 3.2739985e+08 0.060356502 0.033383364 34.279259 36.113217 6704.6781 3.1784749e+08 0.060356538 0.036510519 34.215108 36.012980 6706.7217 3.0687545e+08 0.059927092 0.039702382 34.150956 35.912744 6708.7652 2.9053871e+08 0.059356243 0.040876895 34.089498 35.809795 6710.8088 2.7775230e+08 0.057811894 0.040654812 34.029346 35.705532 6712.8524 2.6315805e+08 0.055907578 0.043412601 33.970396 35.603993 6714.8960 2.5348214e+08 0.053958732 0.047370770 33.916938 35.514895 6716.9396 2.4769837e+08 0.051983374 0.049785281 33.863480 35.425797 6718.9832 2.3764873e+08 0.049669335 0.051343628 33.807524 35.332536 6721.0268 2.2746594e+08 0.050099371 0.050311961 33.747381 35.232299 6723.0703 2.1408079e+08 0.049018466 0.049408176 33.687238 35.132062 6725.1139 2.0714793e+08 0.044847986 0.041504854 33.627096 35.031825 6727.1575 2.0479894e+08 0.043344399 0.040750530 33.566953 34.931588 6729.2011 1.9821734e+08 0.042872941 0.040911387 33.506811 34.831352 6731.2447 1.8896300e+08 0.041103165 0.042237002 33.446670 34.731115 6733.2883 1.7715420e+08 0.039944779 0.045489439 33.386528 34.630878 6735.3319 1.6702904e+08 0.040443242 0.049645729 33.326385 34.530640 6737.3754 1.6153621e+08 0.041903134 0.055331566 33.266242 34.430403 6739.4190 1.5421354e+08 0.042230696 0.063339371 33.207693 34.330166 6741.4626 1.4904020e+08 0.040715248 0.067078115 33.151561 34.229929 6743.5062 1.4324000e+08 0.036743375 0.074462306 33.095428 34.129692 6745.5498 1.3510671e+08 0.034713604 0.078798015 33.039288 34.029442 6747.5934 1.3003627e+08 0.030464481 0.067156883 32.983147 33.929190 6749.6370 1.2265977e+08 0.028908397 0.072103531 32.925368 33.828944 6751.6806 1.1790800e+08 0.026175304 0.073999413 32.865225 33.728707 6753.7241 1.1422745e+08 0.024806610 0.075320740 32.805082 33.628470 6755.7677 1.0670545e+08 0.022737898 0.074268746 32.748610 33.531904 6757.8113 1.0315377e+08 0.021946465 0.074277936 32.692478 33.435677 6759.8549 99280371. 0.022867384 0.076026256 32.636345 33.337760 6761.8985 98028525. 0.026407603 0.078042457 32.580213 33.237523 6763.9421 95359500. 0.029798835 0.079306867 32.524080 33.137287 6765.9857 90301671. 0.031611802 0.079711129 32.467948 33.037050 6768.0292 84695243. 0.028789455 0.080961259 32.411816 32.936813 6770.0728 80110686. 0.024362799 0.087056351 32.355683 32.836576 6772.1164 81146859. 0.020669000 0.092012947 32.299551 32.736339 6774.1600 79476238. 0.016693691 0.096969542 32.243418 32.636102 6776.2036 76308847. 0.012317377 0.10192614 32.191051 32.535865 6778.2472 69805731. 0.0070238971 0.10688273 32.138927 32.435629 6780.2908 61646285. -0.00094475057 0.11183933 32.085019 32.335391 6782.3344 57748529. -0.027689264 0.11679592 32.028885 32.235154 6784.3779 57064386. -0.012810686 0.12175252 31.972752 32.134916 6786.4215 59730956. 0.022565933 0.12670912 31.920432 32.034679