# # 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 = 43.729718 km # Date (UTC) = 2016-12-14T09:56:31.159 # Date (julian) = 2457736.91424953 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6512.1176 5.8591216e+10 0.11393618 0.035937247 107.92833 25.995002 6514.3369 5.1700492e+10 0.12482884 0.036606462 107.97864 25.890504 6516.5562 4.5603477e+10 0.13583481 0.037275676 108.02896 25.786005 6518.7754 4.0549813e+10 0.14702403 0.037944891 108.07928 25.681506 6520.9947 3.6086869e+10 0.15834730 0.038614105 108.12960 25.573179 6523.2140 3.2091632e+10 0.16637663 0.039232144 108.17992 25.464796 6525.4332 2.8557309e+10 0.17144636 0.039732770 108.22868 25.357975 6527.6525 2.5480650e+10 0.17563781 0.041190198 108.27512 25.253477 6529.8718 2.2827815e+10 0.17902185 0.043624445 108.32157 25.148978 6532.0910 2.0481283e+10 0.18128053 0.046760248 108.37118 25.044481 6534.3103 1.8442166e+10 0.18162986 0.048031364 108.42149 24.939983 6536.5296 1.6597100e+10 0.18094672 0.048264331 108.47090 24.835485 6538.7488 1.4947710e+10 0.18050967 0.049521331 108.51734 24.730987 6540.9681 1.3499355e+10 0.17900354 0.051311467 108.56378 24.626488 6543.1874 1.2187178e+10 0.17693020 0.051431074 108.61023 24.521981 6545.4067 1.1051285e+10 0.17438548 0.052459210 108.65668 24.417469 6547.6259 1.0029012e+10 0.17147333 0.053525392 108.70313 24.312957 6549.8452 9.0928375e+09 0.16810267 0.054827599 108.74957 24.208459 6552.0645 8.2626420e+09 0.16428339 0.055570541 108.79602 24.103960 6554.2837 7.5087746e+09 0.16006426 0.054838334 108.84246 23.997590 6556.5030 6.8467526e+09 0.15660177 0.053939175 108.88891 23.889222 6558.7223 6.2703909e+09 0.15341825 0.052623843 108.93535 23.780855 6560.9415 5.7428101e+09 0.15000689 0.051425393 108.98179 23.675968 6563.1608 5.2711380e+09 0.14712126 0.049742352 109.02823 23.571470 6565.3801 4.8473495e+09 0.14424839 0.047886818 109.07468 23.466967 6567.5993 4.4567176e+09 0.14187482 0.046110428 109.12113 23.362455 6569.8186 4.1027306e+09 0.13979800 0.044905703 109.16758 23.257943 6572.0379 3.7906768e+09 0.13760983 0.044208462 109.21403 23.153441 6574.2571 3.5055172e+09 0.13473830 0.042731497 109.26047 23.048942 6576.4764 3.2522743e+09 0.13203786 0.040823026 109.30692 22.945020 6578.6957 3.0190044e+09 0.12883790 0.037551044 109.35336 22.844393 6580.9150 2.7985055e+09 0.12586241 0.035675202 109.39980 22.743766 6583.1342 2.5966836e+09 0.12343757 0.034953728 109.44624 22.640951 6585.3535 2.4065611e+09 0.12072029 0.033688164 109.49269 22.536452 6587.5728 2.2432145e+09 0.11815701 0.033285271 109.53913 22.431954 6589.7920 2.0961708e+09 0.11530159 0.031474661 109.58178 22.327442 6592.0113 1.9603426e+09 0.11192948 0.028062552 109.62436 22.222929 6594.2306 1.8326383e+09 0.10863648 0.026045953 109.66848 22.118423 6596.4498 1.7110341e+09 0.10503606 0.025725229 109.71492 22.013924 6598.6691 1.6028583e+09 0.10211903 0.025087711 109.76136 21.909426 6600.8884 1.5020669e+09 0.10103748 0.026816207 109.80466 21.804928 6603.1076 1.4094044e+09 0.099472720 0.026599549 109.84723 21.700431 6605.3269 1.3218666e+09 0.098596005 0.026939296 109.89069 21.595933 6607.5462 1.2433392e+09 0.097077437 0.024628495 109.93714 21.491434 6609.7654 1.1696087e+09 0.094338005 0.023933306 109.98358 21.386935 6611.9847 1.1034770e+09 0.092101825 0.024330497 110.02753 21.284931 6614.2040 1.0379321e+09 0.091389351 0.023799954 110.07011 21.184290 6616.4233 9.7866975e+08 0.090146850 0.023348729 110.11269 21.083405 6618.6425 9.2548687e+08 0.089681154 0.024255978 110.15526 20.978907 6620.8618 8.7391866e+08 0.089077734 0.025044909 110.19783 20.874408 6623.0811 8.2771826e+08 0.087740594 0.024521858 110.24296 20.763648 6625.3003 7.7441258e+08 0.086536777 0.025755988 110.29086 20.646085 6627.5196 7.2281600e+08 0.084804790 0.025517523 110.33778 20.531616 6629.7389 6.7242203e+08 0.083807664 0.025975515 110.38035 20.430989 6631.9581 6.3208567e+08 0.082169042 0.026028093 110.42293 20.330362 6634.1774 5.9564758e+08 0.080797759 0.026339783 110.46550 20.227416 6636.3967 5.6159569e+08 0.079405739 0.026395708 110.50807 20.122918 6638.6159 5.3131690e+08 0.078380336 0.025644807 110.55065 20.018478 6640.8352 5.0315345e+08 0.078832412 0.025168463 110.59323 19.917836 6643.0545 4.7790417e+08 0.078471355 0.025200844 110.63581 19.817194 6645.2737 4.5370648e+08 0.077413472 0.025579925 110.67838 19.714888 6647.4930 4.2588477e+08 0.076320808 0.026697356 110.72095 19.610389 6649.7123 4.0406206e+08 0.075441334 0.026651837 110.76352 19.505891 6651.9316 3.8748522e+08 0.075027299 0.027198067 110.80610 19.404675 6654.1508 3.6805012e+08 0.074587507 0.027971973 110.84867 19.304047 6656.3701 3.5208447e+08 0.073123711 0.028348245 110.89265 19.198946 6658.5894 3.3051893e+08 0.072068175 0.031106322 110.94054 19.081383 6660.8086 3.1330985e+08 0.071097496 0.032361003 110.98844 18.963821 6663.0279 2.9593785e+08 0.070316779 0.032475481 111.03119 18.862629 6665.2472 2.7709208e+08 0.070197008 0.028142139 111.07377 18.761988 6667.4664 2.6473378e+08 0.070012168 0.027274788 111.11486 18.659866 6669.6857 2.4961125e+08 0.069564734 0.027651436 111.15357 18.555368 6671.9050 2.4259344e+08 0.069617866 0.026878245 111.19227 18.450869 6674.1242 2.2882948e+08 0.069083023 0.029059597 111.23833 18.339400 6676.3435 2.1592462e+08 0.067075271 0.031935115 111.28622 18.226192 6678.5628 2.0580150e+08 0.066379737 0.030560203 111.32949 18.119320 6680.7820 1.9307946e+08 0.067364307 0.029610293 111.36820 18.018692 6683.0013 1.8499794e+08 0.068142191 0.031190511 111.40690 17.918064 6685.2206 1.7482490e+08 0.068016753 0.032937830 111.44916 17.813876 6687.4399 1.6622999e+08 0.066084750 0.034097589 111.49173 17.709377 6689.6591 1.5836056e+08 0.063714021 0.033422708 111.53463 17.601945 6691.8784 1.4575836e+08 0.062764859 0.032794020 111.57818 17.488720 6694.0977 1.2956636e+08 0.061981028 0.031124151 111.62170 17.375996 6696.3169 1.1681820e+08 0.061851352 0.029807463 111.66427 17.275369 6698.5362 1.0769053e+08 0.060683521 0.030953810 111.70684 17.174742 6700.7555 1.0667082e+08 0.058525284 0.031228069 111.74986 17.068377 6702.9747 1.0615480e+08 0.057707350 0.033655061 111.79340 16.955169 6705.1940 1.0432032e+08 0.057574449 0.037013506 111.83617 16.843965 6707.4133 1.0129353e+08 0.056944495 0.040127625 111.87487 16.743337 6709.6325 96014937. 0.055769687 0.040730216 111.91357 16.642709 6711.8518 92579002. 0.053348473 0.041661359 111.95757 16.532333 6714.0711 85865803. 0.050748104 0.047308752 112.00546 16.414771 6716.2903 81910921. 0.048515049 0.048829015 112.05215 16.298423 6718.5096 77599068. 0.045712173 0.050606103 112.09569 16.185214 6720.7289 77534709. 0.045094398 0.050335312 112.13923 16.072008 6722.9482 78414743. 0.043930131 0.049433040 112.17802 15.971143 6725.1674 74068019. 0.039065671 0.041471440 112.21673 15.870502 6727.3867 69056688. 0.036955015 0.040445203 112.25736 15.764848 6729.6060 61344757. 0.035006054 0.040641540 112.30090 15.651640 6731.8252 56624081. 0.032136853 0.043392382 112.34395 15.539717 6734.0445 51841733. 0.029724490 0.049350922 112.38266 15.439089 6736.2638 53895176. 0.031171469 0.051352189 112.42136 15.338461 6738.4830 55329671. 0.031599661 0.059980419 112.46257 15.231310 6740.7023 57754414. 0.029960380 0.065250127 112.50612 15.118102 6742.9216 58295384. 0.024443048 0.070856336 112.54966 15.005860 6745.1408 53015940. 0.014022335 0.078626095 112.59320 14.897006 6747.3601 51193470. -0.026363869 0.067237189 112.63674 14.788152 6749.5794 46868377. -0.00073467793 0.072119299 112.68028 14.675270 6751.7986 43387444. 0.068143180 0.074049343 112.72382 14.562062