# # 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 = 61.530116 km # Date (UTC) = 2013-12-08T10:30:59.359 # Date (julian) = 2456634.93818703 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6493.8639 6.1935055e+10 0.029502316 0.030432885 97.375421 29.129163 6496.2229 5.6039423e+10 0.036637845 0.031144227 97.433016 29.013973 6498.5818 5.0932722e+10 0.043544968 0.031855568 97.487002 28.902384 6500.9408 4.6679719e+10 0.050399511 0.032566910 97.540489 28.791293 6503.2998 4.2951533e+10 0.057366202 0.033278251 97.593973 28.678364 6505.6588 3.9740569e+10 0.064657334 0.033989593 97.647453 28.563175 6508.0177 3.6872737e+10 0.072481594 0.034700934 97.701131 28.447814 6510.3767 3.3918053e+10 0.080830988 0.035412276 97.765926 28.322850 6512.7357 3.1105618e+10 0.089893554 0.036123617 97.830722 28.197887 6515.0946 2.8437127e+10 0.099750746 0.036834959 97.885824 28.081298 6517.4536 2.6141606e+10 0.11067945 0.037546300 97.939307 27.966107 6519.8126 2.4229328e+10 0.12284542 0.038257642 97.992792 27.852663 6522.1716 2.2476667e+10 0.13564806 0.038962175 98.046279 27.741572 6524.5305 2.0875668e+10 0.14366116 0.039615433 98.099762 27.630476 6526.8895 1.9389818e+10 0.15134320 0.040600622 98.149153 27.515309 6529.2485 1.7996956e+10 0.15786846 0.042631576 98.198521 27.400119 6531.6074 1.6711479e+10 0.16469616 0.046112817 98.250212 27.287252 6533.9664 1.5552345e+10 0.16986502 0.047930283 98.303692 27.176176 6536.3254 1.4463619e+10 0.17229987 0.048081630 98.358070 27.063237 6538.6844 1.3333922e+10 0.17384546 0.049489926 98.418240 26.938273 6541.0433 1.2227629e+10 0.17272664 0.051312478 98.478409 26.813310 6543.4023 1.1210857e+10 0.17047017 0.051487478 98.532067 26.697861 6545.7613 1.0343212e+10 0.16805132 0.052462387 98.585547 26.582672 6548.1202 9.6301096e+09 0.16652297 0.053703554 98.636799 26.469707 6550.4792 8.9868645e+09 0.16484457 0.055105350 98.686174 26.358615 6552.8382 8.4119396e+09 0.16332284 0.055375797 98.735547 26.247526 6555.1972 7.8998189e+09 0.16152891 0.054687709 98.784913 26.136449 6557.5561 7.4148321e+09 0.15950916 0.053517527 98.834278 26.025372 6559.9151 6.9933958e+09 0.15734062 0.052283892 98.886450 25.914296 6562.2741 6.6227430e+09 0.15476761 0.050619119 98.939933 25.803219 6564.6330 6.2720744e+09 0.15241423 0.048484705 98.993932 25.688660 6566.9920 5.9019524e+09 0.15071873 0.046621708 99.049468 25.563698 6569.3510 5.5152828e+09 0.14915658 0.044875268 99.104450 25.439615 6571.7100 5.1598889e+09 0.14800907 0.044309374 99.153824 25.324409 6574.0689 4.8573896e+09 0.14591205 0.042821902 99.203199 25.209204 6576.4279 4.6056391e+09 0.14391427 0.040878879 99.252568 25.096722 6578.7869 4.3721569e+09 0.14116109 0.037407063 99.301933 24.985645 6581.1458 4.1619106e+09 0.13856522 0.035552448 99.351299 24.874568 6583.5048 3.9727077e+09 0.13624778 0.034766156 99.400668 24.763492 6585.8638 3.7944729e+09 0.13344418 0.033280202 99.450036 24.652416 6588.2227 3.5997757e+09 0.13137875 0.033305543 99.504331 24.530255 6590.5817 3.3954766e+09 0.12879042 0.029979976 99.559871 24.405293 6592.9407 3.1970010e+09 0.12670353 0.027159827 99.611475 24.289183 6595.2997 3.0201596e+09 0.12456835 0.025654647 99.660840 24.178107 6597.6586 2.8691121e+09 0.12259141 0.025514887 99.709356 24.067028 6600.0176 2.7302753e+09 0.12209976 0.025026068 99.754616 23.955936 6602.3766 2.5965291e+09 0.12181557 0.027195278 99.799876 23.844845 6604.7355 2.4734015e+09 0.12109014 0.026508020 99.848325 23.733765 6607.0945 2.3676486e+09 0.12016115 0.025520356 99.897693 23.622688 6609.4535 2.2626887e+09 0.11719094 0.023840639 99.949195 23.506813 6611.8125 2.1510653e+09 0.11475750 0.024440346 100.00474 23.381850 6614.1714 2.0381896e+09 0.11398803 0.023822382 100.05837 23.259456 6616.5304 1.9291841e+09 0.11272111 0.023365546 100.10363 23.148380 6618.8894 1.8367469e+09 0.11214336 0.024442379 100.14888 23.037303 6621.2483 1.7564363e+09 0.11131413 0.025007131 100.19414 22.929319 6623.6073 1.6821597e+09 0.10949183 0.024716827 100.23939 22.822342 6625.9663 1.6171709e+09 0.10806554 0.026550676 100.28598 22.714038 6628.3253 1.5601865e+09 0.10600722 0.025835153 100.33535 22.602961 6630.6842 1.4987232e+09 0.10409334 0.025929988 100.38472 22.491885 6633.0432 1.4273046e+09 0.10242678 0.026159796 100.43546 22.368408 6635.4022 1.3575018e+09 0.10057032 0.026460099 100.48637 22.243445 6637.7611 1.2915240e+09 0.098960760 0.025788627 100.53314 22.128652 6640.1201 1.2409420e+09 0.098393123 0.025255956 100.57840 22.017576 6642.4791 1.1991216e+09 0.098020871 0.025171301 100.62365 21.906499 6644.8381 1.1589631e+09 0.096856445 0.025434182 100.66890 21.795423 6647.1970 1.1218589e+09 0.095643016 0.026541516 100.71416 21.684346 6649.5560 1.0783907e+09 0.094755728 0.026867269 100.76434 21.565192 6651.9150 1.0277828e+09 0.094446515 0.027185358 100.81526 21.444839 6654.2739 9.8308966e+08 0.093762375 0.027919524 100.86216 21.331078 6656.6329 9.4549640e+08 0.091834415 0.028578922 100.90741 21.220001 6658.9919 9.0861248e+08 0.090130608 0.031820206 100.95425 21.106335 6661.3509 8.6847612e+08 0.088775897 0.032713648 101.00516 20.986000 6663.7098 8.2542744e+08 0.087401797 0.032286502 101.05539 20.866768 6666.0688 7.9140899e+08 0.087255240 0.026922001 101.10065 20.755692 6668.4278 7.6308229e+08 0.086158111 0.027849320 101.14590 20.644616 6670.7867 7.3539792e+08 0.085751522 0.026964148 101.19115 20.533539 6673.1457 7.1030160e+08 0.085139293 0.027677140 101.23640 20.422463 6675.5047 6.8592006e+08 0.082943011 0.030765010 101.28311 20.308997 6677.8637 6.6079136e+08 0.081214557 0.031130444 101.33403 20.188644 6680.2226 6.3164995e+08 0.081277037 0.029489490 101.38400 20.069194 6682.5816 6.0082151e+08 0.081877848 0.030868905 101.42514 19.958117 6684.9406 5.7648824e+08 0.081613974 0.032701822 101.46628 19.847041 6687.2995 5.5556716e+08 0.079410357 0.034175844 101.51393 19.729793 6689.6585 5.3218991e+08 0.076631997 0.033423260 101.56484 19.609458 6692.0175 5.0606045e+08 0.075328062 0.032745029 101.61081 19.493807 6694.3765 4.8561146e+08 0.074279342 0.030733409 101.65195 19.382731 6696.7354 4.6982400e+08 0.073801889 0.029981339 101.69383 19.270960 6699.0944 4.5337841e+08 0.072424502 0.031503333 101.74474 19.150625 6701.4534 4.3589045e+08 0.070551395 0.032074662 101.79565 19.030291 6703.8123 4.1347562e+08 0.070664957 0.035707960 101.84233 18.909956 6706.1713 3.9443494e+08 0.070695695 0.038744552 101.88861 18.789621 6708.5303 3.7560225e+08 0.070242373 0.040621033 101.93102 18.676254 6710.8893 3.5781092e+08 0.068589127 0.040670555 101.97216 18.565163 6713.2482 3.4579010e+08 0.066302508 0.044584388 102.01647 18.451082 6715.6072 3.3535168e+08 0.064119196 0.047999607 102.06738 18.330747 6717.9662 3.2601225e+08 0.061774199 0.049814507 102.11753 18.210412 6720.3251 3.1136714e+08 0.060712080 0.050382094 102.16382 18.090077 6722.6841 2.9576596e+08 0.060181195 0.049759471 102.21008 17.969786 6725.0431 2.7959148e+08 0.055822925 0.041549112 102.25123 17.862809 6727.4020 2.6969356e+08 0.054228579 0.040424743 102.29236 17.755847 6729.7610 2.6268479e+08 0.053111330 0.040538189 102.33644 17.638600 6732.1200 2.5450185e+08 0.051147939 0.043762299 102.38273 17.513637 6734.4790 2.4866465e+08 0.050404678 0.049324782 102.42901 17.390576 6736.8379 2.3710471e+08 0.052175849 0.053522861 102.47530 17.270240 6739.1969 2.2662301e+08 0.052800135 0.063067525 102.52158 17.149905 6741.5559 2.1601826e+08 0.050979393 0.067344080 102.56786 17.029570 6743.9148 2.0512623e+08 0.045992583 0.077218969 102.61368 16.910431 6746.2738 1.9922885e+08 0.043553154 0.075803841 102.65483 16.803454 6748.6328 1.9196497e+08 0.040580074 0.070346023 102.69597 16.696477 6750.9918 1.8484823e+08 0.037731411 0.073697601 102.74050 16.580698 6753.3507 1.7885385e+08 0.034797370 0.074112320 102.78678 16.460363 6755.7097 1.7487669e+08 0.032399775 0.074294186 102.83307 16.340028 6758.0687 1.7060951e+08 0.031431486 0.073850542 102.87935 16.219692 6760.4276 1.6629511e+08 0.032007628 0.076876770 102.92563 16.099357 6762.7866 1.5970019e+08 0.036869000 0.076781970 102.97192 15.979023 6765.1456 1.5167558e+08 0.039633014 0.079557770 103.01820 15.858689 6767.5046 1.4378738e+08 0.038461386 0.081410791 103.06448 15.738354 6769.8635 1.3658812e+08 0.033411902 0.086548699 103.11069 15.618019 6772.2225 1.2711109e+08 0.029241217 0.092270241 103.15234 15.497685 6774.5815 1.2667146e+08 0.024897997 0.097991784 103.19399 15.377350 6776.9404 1.2569800e+08 0.020571259 0.10371333 103.23961 15.257015 6779.2994 1.2794884e+08 0.016186509 0.10943487 103.28589 15.136680 6781.6584 1.3612041e+08 0.011722919 0.11515641 103.32896 15.016345 6784.0174 1.3381719e+08 0.0074038698 0.12087795 103.37061 14.896011 6786.3763 1.3207072e+08 0.0030828933 0.12659949 103.41474 14.775666 6788.7353 1.2354448e+08 -0.0011628530 0.13232104 103.46103 14.655314 6791.0943 1.1656352e+08 -0.0054248993 0.13804258 103.50732 14.536700 6793.4532 1.1363297e+08 -0.0097278053 0.14376412 103.55360 14.420994 6795.8122 1.1028198e+08 -0.014020645 0.14948566 103.60016 14.300626 6798.1712 1.0224312e+08 -0.018245021 0.15520721 103.64777 14.163098 6800.5302 94784434. -0.022451131 0.16092875 103.69346 14.031124 6802.8891 88667128. -0.026642592 0.16665029 103.73511 13.910789 6805.2481 87311879. -0.030868633 0.17237183 103.77751 13.790454 6807.6071 85441172. -0.035085290 0.17809337 103.82380 13.670120 6809.9660 80793870. -0.039285709 0.18381492 103.87007 13.549801 6812.3250 76816329. -0.043494659 0.18953646 103.91173 13.434087 6814.6840 72314485. -0.047708902 0.19525800 103.95338 13.318381 6817.0430 73015281. -0.051967661 0.20097954 104.00449 13.184319 6819.4019 69877190. -0.056222873 0.20670109 104.05739 13.046791 6821.7609 67504915. -0.060514173 0.21242263 104.09960 12.930007 6824.1199 62502067. -0.064855094 0.21814417 104.14125 12.814301 6826.4788 56897256. -0.069313128 0.22386571 104.18761 12.681355 6828.8378 55611564. -0.073914744 0.22958725 104.23521 12.543825 6831.1968 53187087. -0.079614875 0.23530880 104.27747 12.421762 6833.5558 50866528. -0.091963398 0.24103034 104.31912 12.301428 6835.9147 47860101. -0.090013920 0.24675188 104.36517 12.172299 6838.2737 45560447. -0.078811884 0.25247342 104.41278 12.040060