# # 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 = 48.458654 km # Date (UTC) = 2011-11-25T06:22:42.783 # Date (julian) = 2455890.76577295 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6500.2944 1.7984832e+11 0.054770153 0.032371982 24.724982 56.213075 6503.0203 1.4546453e+11 0.064670556 0.033193980 24.528188 56.069590 6505.7463 1.1832406e+11 0.074332661 0.034015978 24.329419 55.925031 6508.4722 9.7096609e+10 0.083827924 0.034837975 24.152928 55.796674 6511.1981 8.3992120e+10 0.093512442 0.035659973 23.971721 55.663791 6513.9241 7.0942976e+10 0.10323350 0.036481971 23.776124 55.517092 6516.6500 6.0693303e+10 0.11334192 0.037303969 23.595448 55.378318 6519.3759 5.2611291e+10 0.12406770 0.038125967 23.424278 55.244592 6522.1019 4.6043448e+10 0.13527110 0.038943923 23.235000 55.101251 6524.8278 4.0632877e+10 0.14059085 0.039721036 23.042542 54.955922 6527.5537 3.5883568e+10 0.14426950 0.041118479 22.876747 54.822217 6530.2797 3.1857128e+10 0.14779313 0.044220208 22.706813 54.685451 6533.0056 2.8457492e+10 0.15103594 0.047521962 22.523441 54.538752 6535.7315 2.5472266e+10 0.15214060 0.047906966 22.353812 54.399843 6538.4575 2.2967447e+10 0.15509135 0.049379437 22.193365 54.266137 6541.1834 2.0907895e+10 0.15724411 0.051267057 22.016189 54.118491 6543.9093 1.9065198e+10 0.15904560 0.051620549 21.835467 53.967972 6546.6353 1.7357071e+10 0.16090574 0.052987238 21.680368 53.839616 6549.3612 1.5922472e+10 0.16159374 0.054334359 21.525269 53.710061 6552.0871 1.4722055e+10 0.16152650 0.055564838 21.370170 53.576355 6554.8131 1.3518894e+10 0.15975682 0.054849442 21.207223 53.435884 6557.5390 1.2359137e+10 0.15735901 0.053528268 21.029964 53.283074 6560.2649 1.1313006e+10 0.15471922 0.052035449 20.872460 53.143983 6562.9909 1.0398374e+10 0.15200750 0.049937070 20.722710 53.010278 6565.7168 9.5991042e+09 0.14960494 0.047504476 20.559993 52.860365 6568.4427 8.8408852e+09 0.14821992 0.045364697 20.398203 52.711611 6571.1687 8.1315518e+09 0.14708448 0.044457213 20.248452 52.577906 6573.8946 7.5495219e+09 0.14538741 0.042939597 20.100533 52.444200 6576.6205 7.0623634e+09 0.14361475 0.040657162 19.956131 52.310494 6579.3465 6.5689289e+09 0.14113474 0.036880037 19.804864 52.167756 6582.0724 6.0742912e+09 0.13921667 0.035274097 19.645943 52.014946 6584.7983 5.5933266e+09 0.13731329 0.034080636 19.503645 51.878122 6587.5243 5.1756353e+09 0.13529908 0.033274524 19.364591 51.744416 6590.2502 4.8480694e+09 0.13266331 0.030596681 19.225537 51.610710 6592.9761 4.5306681e+09 0.12950211 0.027125416 19.084552 51.475147 6595.7021 4.2125674e+09 0.12579126 0.025696376 18.925630 51.322338 6598.4280 3.8971453e+09 0.12270137 0.025202830 18.778327 51.178329 6601.1539 3.5930894e+09 0.12146079 0.027118177 18.644601 51.044603 6603.8799 3.3621489e+09 0.11870955 0.026142403 18.510887 50.910889 6606.6058 3.1598252e+09 0.11642083 0.026415385 18.377182 50.777183 6609.3317 2.9576330e+09 0.11161241 0.023804468 18.234097 50.629686 6612.0577 2.7583625e+09 0.10790865 0.024277676 18.088975 50.478517 6614.7836 2.5677449e+09 0.10661121 0.023400632 17.960618 50.344811 6617.5095 2.4144616e+09 0.10549023 0.023608179 17.832260 50.209949 6620.2355 2.2940311e+09 0.10492125 0.024843072 17.703903 50.070894 6622.9614 2.1694241e+09 0.10343791 0.024502104 17.569193 49.927075 6625.6873 2.0376071e+09 0.10189632 0.026217782 17.422494 49.774265 6628.4133 1.9099879e+09 0.10003068 0.025870879 17.292623 49.635025 6631.1392 1.7947092e+09 0.098103527 0.025944904 17.169614 49.501320 6633.8651 1.6987107e+09 0.096280157 0.026303294 17.046605 49.367614 6636.5911 1.6073050e+09 0.094408861 0.026320223 16.923596 49.233908 6639.3170 1.5099312e+09 0.093270652 0.025514777 16.783525 49.075724 6642.0429 1.4159958e+09 0.093595579 0.025153452 16.650613 48.925243 6644.7689 1.3313369e+09 0.092203331 0.025426702 16.532951 48.791537 6647.4948 1.2492146e+09 0.090557774 0.026698286 16.407473 48.648949 6650.2207 1.1727510e+09 0.089272388 0.026305766 16.273001 48.496139 6652.9467 1.1010894e+09 0.088334910 0.027510983 16.152465 48.354731 6655.6726 1.0388424e+09 0.086050806 0.027888129 16.034804 48.215676 6658.3985 9.8999284e+08 0.083484077 0.030767859 15.922273 48.081752 6661.1245 9.3932263e+08 0.081108858 0.032598335 15.807979 47.946339 6663.8504 8.8360448e+08 0.078896498 0.032247550 15.673506 47.793528 6666.5763 8.3084719e+08 0.078222306 0.027020898 15.549080 47.646955 6669.3023 7.7895731e+08 0.076503896 0.028045270 15.436767 47.507902 6672.0282 7.3434415e+08 0.076109199 0.026895935 15.324444 47.371958 6674.7541 6.9528553e+08 0.074631426 0.029590939 15.212115 47.238232 6677.4801 6.5418098e+08 0.072449388 0.031675776 15.092702 47.090879 6680.2060 6.1431393e+08 0.072878501 0.029485897 14.971647 46.939143 6682.9319 5.8092377e+08 0.073913863 0.031136563 14.864683 46.800088 6685.6579 5.4607633e+08 0.073672801 0.033399690 14.754535 46.658167 6688.3838 5.1455211e+08 0.070797058 0.033873781 14.632286 46.505357 6691.1097 4.8990552e+08 0.069038142 0.032975377 14.518785 46.360420 6693.8357 4.6220614e+08 0.067873065 0.031317409 14.411820 46.221367 6696.5616 4.3891856e+08 0.067527327 0.029909112 14.294119 46.072649 6699.2875 4.1443635e+08 0.065983013 0.031325136 14.173244 45.921110 6702.0134 3.8856765e+08 0.063873296 0.032887470 14.071627 45.787404 6704.7394 3.6905596e+08 0.064249498 0.036540629 13.967154 45.648738 6707.4653 3.4597688e+08 0.063819618 0.040120170 13.851019 45.489815 6710.1912 3.2591962e+08 0.062393045 0.040533929 13.743024 45.345030 6712.9172 3.0611647e+08 0.059694116 0.043532861 13.641407 45.211324 6715.6431 2.9085297e+08 0.056964919 0.048036349 13.529759 45.060196 6718.3690 2.7777445e+08 0.053958519 0.050387181 13.414715 44.902659 6721.0950 2.6275452e+08 0.053328834 0.050332518 13.318447 44.768954 6723.8209 2.4847955e+08 0.051124493 0.049826783 13.218501 44.630580 6726.5468 2.3305798e+08 0.046433522 0.040956299 13.102365 44.471659 6729.2728 2.2073038e+08 0.045268241 0.040863611 12.997139 44.326584 6731.9987 2.1000625e+08 0.042696264 0.043737653 12.900871 44.192878 6734.7246 2.0294106e+08 0.042024075 0.049309999 12.795258 44.046194 6737.4506 1.9252428e+08 0.043852462 0.055570906 12.685499 43.893118 6740.1765 1.8122389e+08 0.043656203 0.064351908 12.581589 43.734195 6742.9024 1.7135870e+08 0.039710884 0.070809738 12.480791 43.585543 6745.6284 1.6130970e+08 0.035962608 0.078831053 12.384523 43.451837 6748.3543 1.5477251e+08 0.031565362 0.068880964 12.284147 43.304578 6751.0802 1.4601282e+08 0.028261737 0.073745600 12.180237 43.145657 6753.8062 1.3598198e+08 0.024936987 0.075586240 12.076326 42.992245 6756.5321 1.2725025e+08 0.021569535 0.075536119 11.975864 42.843086 6759.2580 1.2169808e+08 0.021912700 0.075882226 11.884943 42.704031 6761.9840 1.1787982e+08 0.025558437 0.078049521 11.788883 42.559532 6764.7099 1.1375991e+08 0.029126088 0.079517296 11.684972 42.406723 6767.4358 1.0731548e+08 0.028250771 0.081487729 11.585705 42.249270 6770.1618 1.0097461e+08 0.022280957 0.087272091 11.487151 42.091105 6772.8877 95585160. 0.017156602 0.093883678 11.383240 41.938295 6775.6136 90457431. 0.011991537 0.10049526 11.288272 41.794801 6778.3396 84383657. 0.0066595176 0.10710685 11.202701 41.661096 6781.0655 77678012. 0.0010700220 0.11371844 11.109575 41.511809 6783.7914 75734830. -0.0043789914 0.12033002 11.011776 41.352884 6786.5174 72478443. -0.010431728 0.12694161 10.913978 41.199963 6789.2433 68236111. -0.017616676 0.13355320 10.816180 41.045040 6791.9692 63382809. -0.028000007 0.14016478 10.718381 40.886119 6794.6952 58595309. -0.065931895 0.14677637 10.624921 40.731536 6797.4211 56909459. -0.043569560 0.15338796 10.532785 40.578726 6800.1470 55591407. 0.012519599 0.15999954 10.434987 40.425917