# # 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 = 42.178181 km # Date (UTC) = 2017-01-09T10:38:40.696 # Date (julian) = 2457762.94352658 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6510.7204 5.8515000e+10 0.10601047 0.035515929 96.336146 34.694240 6512.6099 5.2899189e+10 0.11549212 0.036085693 96.392619 34.593283 6514.4994 4.7568172e+10 0.12504176 0.036655458 96.448226 34.493193 6516.3888 4.2687923e+10 0.13468999 0.037225222 96.503577 34.392847 6518.2783 3.8506353e+10 0.14450204 0.037794987 96.555477 34.289047 6520.1678 3.4869250e+10 0.15445520 0.038364751 96.607376 34.185246 6522.0573 3.1674548e+10 0.16436798 0.038932244 96.660652 34.081447 6523.9467 2.8735257e+10 0.16897872 0.039413756 96.716260 33.977649 6525.8362 2.5993099e+10 0.17285129 0.039686782 96.771867 33.873850 6527.7257 2.3631833e+10 0.17736735 0.041243311 96.823310 33.780045 6529.6151 2.1715812e+10 0.18030314 0.043215637 96.872737 33.691076 6531.5046 2.0202345e+10 0.18218638 0.045963134 96.922165 33.602106 6533.3941 1.8831374e+10 0.18368757 0.047687056 96.973173 33.506028 6535.2835 1.7460453e+10 0.18372024 0.048101297 97.025072 33.405936 6537.1730 1.6106618e+10 0.18324689 0.048766794 97.076971 33.305845 6539.0625 1.4830155e+10 0.18169749 0.049719260 97.132362 33.202262 6540.9520 1.3646861e+10 0.17979163 0.051303828 97.187969 33.098464 6542.8414 1.2573552e+10 0.17729655 0.051321688 97.242673 32.995566 6544.7309 1.1590690e+10 0.17454522 0.052237260 97.294580 32.895459 6546.6204 1.0699503e+10 0.17129342 0.052974982 97.346487 32.795352 6548.5098 9.9097885e+09 0.16857843 0.053819898 97.398390 32.693226 6550.3993 9.1735491e+09 0.16661880 0.055085340 97.450289 32.589428 6552.2888 8.4875770e+09 0.16466562 0.055514084 97.502188 32.485630 6554.1782 7.8625394e+09 0.16194383 0.054836121 97.554087 32.384979 6556.0677 7.2788209e+09 0.15940039 0.054003171 97.605987 32.284887 6557.9572 6.7620591e+09 0.15740414 0.053266146 97.657010 32.186485 6559.8466 6.3384727e+09 0.15465748 0.052291618 97.703142 32.097516 6561.7361 5.9909789e+09 0.15139529 0.051009939 97.749273 32.008547 6563.6256 5.6792071e+09 0.14814037 0.049204708 97.796081 31.917840 6565.5151 5.3623238e+09 0.14548266 0.047733545 97.847980 31.814041 6567.4045 5.0418768e+09 0.14314907 0.046275151 97.899880 31.710241 6569.2940 4.7274438e+09 0.14063194 0.044871559 97.950223 31.607998 6571.1835 4.4468430e+09 0.13839224 0.044453167 97.998414 31.507906 6573.0729 4.1737216e+09 0.13601375 0.043598954 98.046605 31.407814 6574.9624 3.9215778e+09 0.13334221 0.042392765 98.097474 31.307723 6576.8519 3.6927459e+09 0.13019889 0.040390869 98.149374 31.207631 6578.7413 3.4736310e+09 0.12671819 0.037478947 98.201182 31.107448 6580.6308 3.2609164e+09 0.12372587 0.035937791 98.249376 31.003649 6582.5203 3.0512670e+09 0.12100568 0.035152211 98.297570 30.899850 6584.4098 2.8572841e+09 0.11799298 0.034292304 98.345766 30.797259 6586.2992 2.6704228e+09 0.11524502 0.033167428 98.393964 30.697152 6588.1887 2.4970083e+09 0.11334486 0.033316917 98.442163 30.597044 6590.0782 2.3392068e+09 0.11133021 0.030916677 98.486984 30.503954 6591.9676 2.2133723e+09 0.10911969 0.028110052 98.529820 30.414986 6593.8571 2.1150215e+09 0.10697817 0.026305378 98.572656 30.326017 6595.7466 2.0214721e+09 0.10456077 0.025700992 98.620888 30.230428 6597.6360 1.9265381e+09 0.10272752 0.025522017 98.672790 30.130336 6599.5255 1.8229154e+09 0.10158628 0.024961337 98.724692 30.030244 6601.4150 1.7271951e+09 0.10135063 0.027241121 98.773263 29.930152 6603.3044 1.6386608e+09 0.10025649 0.026483041 98.821454 29.830060 6605.1939 1.5547169e+09 0.099669961 0.026827725 98.868904 29.729226 6607.0834 1.4840358e+09 0.098371510 0.025542336 98.913390 29.625427 6608.9729 1.4078640e+09 0.095562923 0.023706649 98.957876 29.521628 6610.8623 1.3355579e+09 0.092928410 0.024826912 99.004225 29.419692 6612.7518 1.2657152e+09 0.091820421 0.023759038 99.052416 29.319601 6614.6413 1.1942615e+09 0.090765158 0.023498685 99.100608 29.219509 6616.5307 1.1262055e+09 0.089396627 0.023365598 99.148799 29.119417 6618.4202 1.0596321e+09 0.088835129 0.024088101 99.196990 29.019326 6620.3097 9.9632796e+08 0.088216822 0.024866990 99.244252 28.920429 6622.1991 9.4604563e+08 0.086982299 0.024704987 99.283800 28.831448 6624.0886 9.0647379e+08 0.085128279 0.024909745 99.323348 28.742467 6625.9781 8.7011173e+08 0.084020930 0.026564752 99.363529 28.652672 6627.8676 8.3125146e+08 0.082330726 0.025651933 99.411720 28.552580 6629.7570 7.8266967e+08 0.081294416 0.025972233 99.459911 28.452488 6631.6465 7.3892721e+08 0.079960020 0.025996436 99.506711 28.352397 6633.5360 6.9616810e+08 0.079130405 0.026245827 99.551197 28.252305 6635.4254 6.6285048e+08 0.078204509 0.026463588 99.595683 28.152214 6637.3149 6.2847645e+08 0.077366726 0.026007183 99.640170 28.052122 6639.2044 5.8848584e+08 0.076940044 0.025555028 99.684656 27.952030 6641.0938 5.5560426e+08 0.077828624 0.025148619 99.729143 27.851937 6642.9833 5.2375104e+08 0.077775091 0.025191935 99.777262 27.751845 6644.8728 5.0493033e+08 0.077038491 0.025437935 99.825453 27.651753 6646.7622 4.8375570e+08 0.076163661 0.026314712 99.872596 27.551661 6648.6517 4.5838462e+08 0.075372390 0.027400547 99.917082 27.451570 6650.5412 4.3595002e+08 0.075156586 0.026379130 99.961568 27.351478 6652.4307 4.1040447e+08 0.074953105 0.027369013 100.00605 27.251386 6654.3201 3.9459856e+08 0.074268749 0.027899848 100.05054 27.151295 6656.2096 3.7991645e+08 0.072715276 0.028207381 100.09502 27.051204 6658.0991 3.6203754e+08 0.071596500 0.030236777 100.13951 26.951112 6659.9885 3.5016314e+08 0.070391507 0.031628388 100.18399 26.851020 6661.8780 3.3257025e+08 0.069115138 0.032982137 100.22777 26.751632 6663.7675 3.1880255e+08 0.067972053 0.032270526 100.26856 26.655232 6665.6569 3.0701066e+08 0.067956549 0.027470702 100.30934 26.558832 6667.5464 2.8731870e+08 0.067494360 0.027304165 100.35195 26.460611 6669.4359 2.7331479e+08 0.066627598 0.027908018 100.39644 26.360519 6671.3254 2.5990057e+08 0.066673099 0.026869985 100.44092 26.260427 6673.2148 2.4674116e+08 0.066381945 0.027780503 100.48540 26.160335 6675.1043 2.3804137e+08 0.065058579 0.029998118 100.52989 26.060243 6676.9938 2.2592733e+08 0.063261365 0.032354199 100.57401 25.960151 6678.8832 2.1259150e+08 0.062858799 0.030345870 100.61479 25.860060 6680.7727 2.0227173e+08 0.063859327 0.029608275 100.65557 25.759969 6682.6622 1.9320111e+08 0.064506521 0.030930468 100.69783 25.659878 6684.5516 1.8582657e+08 0.064524590 0.032682085 100.74232 25.559786 6686.4411 1.7915184e+08 0.063590039 0.034017730 100.78681 25.459694 6688.3306 1.7745895e+08 0.061304623 0.033861500 100.82868 25.362209 6690.2201 1.7130548e+08 0.059872179 0.033090646 100.86946 25.265824 6692.1095 1.6618890e+08 0.058939206 0.032638149 100.91024 25.169412 6693.9990 1.5694461e+08 0.058042096 0.031261373 100.95102 25.069325 6695.8885 1.4344100e+08 0.057969667 0.029696274 100.99179 24.969233 6697.7779 1.3303582e+08 0.057249777 0.030189714 101.03371 24.869141 6699.6674 1.2714733e+08 0.055857026 0.030974614 101.07820 24.769049 6701.5569 1.2200430e+08 0.054218822 0.032226530 101.12268 24.668957 6703.4463 1.1744898e+08 0.054262831 0.034792115 101.16491 24.571130 6705.3358 1.1371122e+08 0.054331944 0.037265605 101.20568 24.474746 6707.2253 1.0757576e+08 0.053909530 0.040154555 101.24646 24.378362 6709.1147 1.0809074e+08 0.053353519 0.041059559 101.28725 24.278578 6711.0042 1.0518109e+08 0.051823541 0.040697030 101.32803 24.178470 6712.8937 1.0199070e+08 0.050086018 0.043489236 101.36881 24.079167 6714.7832 99606060. 0.048329051 0.047362286 101.40959 23.982783 6716.6726 90539649. 0.046479093 0.049392076 101.45037 23.886398 6718.5621 86116717. 0.044507758 0.050687835 101.49115 23.788091 6720.4516 79746378. 0.044186789 0.050367445 101.53193 23.687999 6722.3410 72876167. 0.043713142 0.050183597 101.57271 23.587907 6724.2305 70409978. 0.041392615 0.048001804 101.61827 23.479551 6726.1200 65864074. 0.038092429 0.040952450 101.66487 23.369395 6728.0094 67151262. 0.037755080 0.039641484 101.70879 23.263877 6729.8989 67626741. 0.036759158 0.040446279 101.74957 23.163786 6731.7884 65256549. 0.035165479 0.043319051 101.79035 23.063694 6733.6779 64256962. 0.034195650 0.047604564 101.82830 22.966432 6735.5673 63328077. 0.035092178 0.049895686 101.86537 22.870047 6737.4568 64180184. 0.036291640 0.055590685 101.90268 22.773418 6739.3463 61548766. 0.036010215 0.063250309 101.94346 22.673326 6741.2357 60018173. 0.033912123 0.066431008 101.98424 22.573234 6743.1252 55556775. 0.028795147 0.071892038 102.02716 22.469436 6745.0147 50784280. 0.021810429 0.078573054 102.07377 22.359279 6746.9041 44920501. -0.0032498252 0.068475646 102.12029 22.249208 6748.7936 41738628. 0.0094039691 0.071192104 102.15737 22.149111 6752.5725 43948288. 0.042723051 0.073471931 102.23266 21.950078