# # 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 = 41.445881 km # Date (UTC) = 2016-12-21T10:04:10.624 # Date (julian) = 2457743.91956740 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6514.3719 5.2184877e+10 0.12634013 0.036617007 -31.826664 49.122310 6516.3373 4.7014314e+10 0.13615785 0.037209665 -31.915780 49.040049 6518.3026 4.2364448e+10 0.14605869 0.037802322 -32.003555 48.957788 6520.2680 3.8327653e+10 0.15607137 0.038394980 -32.089244 48.875527 6522.2334 3.4720867e+10 0.16552620 0.038978374 -32.174933 48.793265 6524.1988 3.1474000e+10 0.17013084 0.039497587 -32.262252 48.710998 6526.1642 2.8387627e+10 0.17341388 0.039840225 -32.351380 48.628726 6528.1296 2.5534956e+10 0.17732897 0.041545281 -32.440507 48.546453 6530.0950 2.3065369e+10 0.18032711 0.043961653 -32.527720 48.464187 6532.0604 2.0890297e+10 0.18211603 0.046734614 -32.613409 48.381927 6534.0257 1.8955250e+10 0.18203014 0.047951759 -32.699097 48.299666 6535.9911 1.7159661e+10 0.18070153 0.047794347 -32.784786 48.217405 6537.9565 1.5510891e+10 0.18124062 0.049136183 -32.870475 48.135143 6539.9219 1.3995568e+10 0.18061230 0.050759577 -32.956163 48.052882 6541.8873 1.2661196e+10 0.17797075 0.051038786 -33.039378 47.970621 6543.8527 1.1426239e+10 0.17538803 0.051605685 -33.121640 47.888360 6545.8181 1.0360412e+10 0.17268759 0.052462896 -33.203902 47.806100 6547.7835 9.5051560e+09 0.17027370 0.053585301 -33.279553 47.727967 6549.7489 8.8025025e+09 0.16730767 0.054729419 -33.353595 47.650839 6551.7142 8.2357561e+09 0.16419376 0.055486460 -33.427637 47.573711 6553.6796 7.6733299e+09 0.16112822 0.054993427 -33.506307 47.493693 6555.6450 7.0779581e+09 0.15858933 0.054311397 -33.588568 47.411432 6557.6104 6.4811803e+09 0.15631212 0.053483504 -33.670830 47.329170 6559.5758 5.9357952e+09 0.15347146 0.052322190 -33.753091 47.246909 6561.5412 5.4744319e+09 0.15035879 0.051105999 -33.835352 47.164648 6563.5066 5.0828200e+09 0.14735968 0.049342383 -33.917612 47.082388 6565.4720 4.7368735e+09 0.14475682 0.047782484 -33.997378 47.000126 6567.4373 4.4235578e+09 0.14244510 0.046247401 -34.076212 46.917865 6569.4027 4.1275714e+09 0.14005929 0.044878636 -34.155045 46.835603 6571.3681 3.8379038e+09 0.13794222 0.044402734 -34.233888 46.753334 6573.3335 3.5563451e+09 0.13552080 0.043389848 -34.312733 46.671062 6575.2989 3.2977697e+09 0.13299841 0.042074819 -34.391578 46.588791 6577.2643 3.0713731e+09 0.13011884 0.039805243 -34.470413 46.503467 6579.2297 2.8752845e+09 0.12670062 0.036944235 -34.549247 46.417779 6581.1951 2.6960442e+09 0.12367567 0.035537541 -34.628080 46.332090 6583.1605 2.5274426e+09 0.12107421 0.034940453 -34.706914 46.249745 6585.1258 2.3596424e+09 0.11833456 0.033870168 -34.785747 46.167483 6587.0912 2.2005049e+09 0.11554788 0.033178582 -34.864381 46.085221 6589.0566 2.0538004e+09 0.11268321 0.032933657 -34.939788 46.002959 6591.0220 1.9215768e+09 0.10930701 0.029177081 -35.015194 45.920698 6592.9874 1.8049805e+09 0.10650489 0.027114467 -35.090602 45.837952 6594.9528 1.6911190e+09 0.10372286 0.025649493 -35.166017 45.752252 6596.9182 1.5872725e+09 0.10105703 0.025723099 -35.241432 45.666552 6598.8836 1.4839466e+09 0.099374065 0.024985325 -35.316846 45.581621 6600.8489 1.3896939e+09 0.099442692 0.026735147 -35.392252 45.499360 6602.8143 1.3063678e+09 0.098671886 0.026821715 -35.467659 45.417100 6604.7797 1.2259360e+09 0.097881570 0.026534249 -35.543065 45.334839 6606.7451 1.1572660e+09 0.096978639 0.026165026 -35.618472 45.252577 6608.7105 1.0882094e+09 0.094412659 0.023713586 -35.693878 45.170316 6610.6759 1.0198017e+09 0.091807953 0.024648772 -35.767953 45.086723 6612.6413 9.6008512e+08 0.090527559 0.023841617 -35.839932 45.001034 6614.6067 9.0578590e+08 0.089511569 0.023522526 -35.911910 44.915345 6616.5720 8.5130654e+08 0.088180398 0.023372082 -35.983893 44.831266 6618.5374 8.0491287e+08 0.087571953 0.024176625 -36.055880 44.748994 6620.5028 7.5281273e+08 0.086951697 0.024929233 -36.127868 44.666723 6622.4682 7.0556241e+08 0.085732551 0.024633370 -36.199850 44.584457 6624.4336 6.6404166e+08 0.084133645 0.025094415 -36.271829 44.502195 6626.3990 6.1721180e+08 0.082810881 0.026082552 -36.343807 44.419933 6628.3644 5.8033302e+08 0.081451766 0.025851036 -36.413605 44.335492 6630.3298 5.4412608e+08 0.080095661 0.025929114 -36.482156 44.249803 6632.2952 5.1467212e+08 0.078533464 0.026067737 -36.550708 44.164114 6634.2605 4.8722651e+08 0.077076531 0.026345848 -36.621721 44.080889 6636.2259 4.5612134e+08 0.075697950 0.026462014 -36.693699 43.998629 6638.1913 4.2956479e+08 0.074870145 0.025663307 -36.765678 43.916369 6640.1567 4.0059467e+08 0.075153307 0.025251479 -36.834918 43.834098 6642.1221 3.7640812e+08 0.075532643 0.025156693 -36.903479 43.751825 6644.0875 3.5470503e+08 0.074917022 0.025353061 -36.972039 43.669552 6646.0529 3.3587246e+08 0.074344394 0.025947516 -37.040592 43.584260 6648.0183 3.1883000e+08 0.073781208 0.026976508 -37.109143 43.498571 6649.9836 3.0268500e+08 0.073357191 0.026277776 -37.177694 43.412883 6651.9490 2.8072535e+08 0.073156594 0.027211465 -37.246245 43.330506 6653.9144 2.6152683e+08 0.072860369 0.027992534 -37.314796 43.248244 6655.8798 2.4441238e+08 0.071560249 0.027973757 -37.383180 43.165983 6657.8452 2.3056322e+08 0.070441584 0.029881518 -37.448303 43.083722 6659.8106 2.2203409e+08 0.069228457 0.031665508 -37.513426 43.001462 6661.7760 2.0950289e+08 0.068041842 0.032930172 -37.580125 42.917343 6663.7414 1.9274695e+08 0.067086662 0.032277762 -37.657259 42.820927 6665.7068 1.7451291e+08 0.067341735 0.027389088 -37.734392 42.724511 6667.6721 1.6475618e+08 0.066899856 0.027350347 -37.805059 42.635715 6669.6375 1.5650386e+08 0.066217251 0.027700914 -37.870182 42.553453 6671.6029 1.5457025e+08 0.066077558 0.026873940 -37.935305 42.471191 6673.5683 1.4244727e+08 0.065676720 0.028309162 -38.000429 42.388931 6675.5337 1.2560438e+08 0.064167977 0.030820579 -38.065553 42.306670 6677.4991 1.1203557e+08 0.062957146 0.031648719 -38.130677 42.224410 6679.4645 1.0285497e+08 0.062885105 0.029883953 -38.193390 42.139739 6681.4299 1.0256974e+08 0.063768779 0.029987140 -38.255086 42.054050 6683.3952 1.0247269e+08 0.064302383 0.031767821 -38.316782 41.968361 6685.3606 1.0071420e+08 0.064251783 0.033085758 -38.387568 41.877284 6687.3260 96668230. 0.062738006 0.034161073 -38.460833 41.784738 6689.2914 94795816. 0.060577041 0.033753706 -38.531873 41.694169 6691.2568 91294248. 0.060009244 0.032940675 -38.593577 41.611897 6693.2222 88601248. 0.059504136 0.031527864 -38.655282 41.529626 6695.1876 85219979. 0.059335397 0.029825018 -38.716983 41.446414 6697.1530 81298095. 0.059082717 0.030110623 -38.778679 41.360726 6699.1184 79015303. 0.058107642 0.031481226 -38.840375 41.275037 6701.0837 76924819. 0.056683303 0.031532319 -38.904830 41.186895 6703.0491 73695209. 0.056764656 0.033798173 -38.974239 41.094350 6705.0145 76241539. 0.057018001 0.036694416 -39.043648 41.001804 6706.9799 74789999. 0.056862124 0.040151854 -39.107162 40.917120 6708.9453 73274154. 0.056554650 0.041072971 -39.168858 40.834859 6710.9107 75870434. 0.055136907 0.040674750 -39.230554 40.752598 6712.8761 70354416. 0.053617385 0.043456529 -39.292256 40.667425 6714.8415 68774611. 0.051968316 0.047366669 -39.353959 40.581725 6716.8068 65588345. 0.050393872 0.049589772 -39.415662 40.496025 6718.7722 63405095. 0.048496517 0.051015112 -39.480945 40.403960 6720.7376 62736248. 0.048824973 0.050334300 -39.546498 40.311414 6722.7030 56359969. 0.048552710 0.049736099 -39.610754 40.222328 6724.6684 52219932. 0.045555930 0.044345095 -39.672450 40.140066 6726.6338 50067891. 0.043638789 0.040957084 -39.734146 40.057805 6728.5992 50555508. 0.043614199 0.040477328 -39.797457 39.969621 6730.5646 50890243. 0.042258765 0.041152989 -39.863009 39.873219 6732.5300 46171094. 0.041735352 0.043837772 -39.928561 39.776818 6734.4953 43399735. 0.041112089 0.049323796 -39.988101 39.692090 6736.4607 41914363. 0.041924498 0.052096818 -40.046371 39.609829