# # 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 = 42.820623 km # Date (UTC) = 2012-01-15T09:22:26.432 # Date (julian) = 2455941.89058370 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6484.7744 5.0724553e+11 0.021833699 0.027691975 -22.722788 48.716979 6487.3475 4.0996378e+11 0.030514322 0.028467871 -22.861258 48.566971 6489.9205 3.3026090e+11 0.039306883 0.029243766 -22.999728 48.416963 6492.4936 2.6566132e+11 0.048108815 0.030019661 -23.138197 48.264530 6495.0666 2.1285939e+11 0.056797154 0.030795557 -23.276667 48.108751 6497.6397 1.7082339e+11 0.065190116 0.031571452 -23.411172 47.956936 6500.2127 1.3794246e+11 0.073107036 0.032347347 -23.543872 47.806925 6502.7857 1.1243037e+11 0.080433367 0.033123243 -23.676573 47.651413 6505.3588 9.2856997e+10 0.087015296 0.033899138 -23.804501 47.501044 6507.9318 7.8738896e+10 0.092625946 0.034675033 -23.915562 47.369790 6510.5049 6.8236790e+10 0.097344559 0.035450929 -24.031811 47.234039 6513.0779 6.0121020e+10 0.10158805 0.036226824 -24.164511 47.084029 6515.6510 5.2790727e+10 0.10599919 0.037002719 -24.294289 46.931099 6518.2240 4.6269492e+10 0.11173780 0.037778615 -24.421221 46.775322 6520.7971 4.0711513e+10 0.12020525 0.038554510 -24.543690 46.624004 6523.3701 3.6184305e+10 0.12894019 0.039270845 -24.664446 46.474543 6525.9432 3.2638870e+10 0.13804463 0.039674574 -24.775508 46.338239 6528.5162 2.9709612e+10 0.15166471 0.041851991 -24.887167 46.201124 6531.0893 2.7110661e+10 0.16377542 0.045358589 -25.008329 46.051117 6533.6623 2.4420182e+10 0.17303337 0.047801045 -25.129490 45.899228 6536.2353 2.1796555e+10 0.17519913 0.048001072 -25.250650 45.743449 6538.8084 1.9575026e+10 0.17502810 0.049550326 -25.362834 45.599213 6541.3814 1.7704310e+10 0.17289856 0.051202831 -25.468848 45.462910 6543.9545 1.6110226e+10 0.17025071 0.051632402 -25.584129 45.318221 6546.5275 1.4604716e+10 0.16819837 0.052898600 -25.705290 45.168214 6549.1006 1.3112510e+10 0.16608030 0.054068778 -25.821382 45.013136 6551.6736 1.1816291e+10 0.16473328 0.055472204 -25.934679 44.860919 6554.2467 1.0759666e+10 0.16263368 0.054837557 -26.035660 44.729643 6556.8197 9.8783935e+09 0.16076278 0.053892612 -26.139012 44.594334 6559.3928 9.0771340e+09 0.15820116 0.052342849 -26.254383 44.438582 6561.9658 8.3454688e+09 0.15560027 0.050896751 -26.361371 44.293386 6564.5389 7.7163623e+09 0.15271571 0.048527387 -26.457303 44.162112 6567.1119 7.1669043e+09 0.15046675 0.046522570 -26.562004 44.019794 6569.6850 6.6438058e+09 0.14834710 0.044897004 -26.677395 43.864015 6572.2580 6.0747589e+09 0.14623758 0.044082408 -26.788647 43.708237 6574.8310 5.5436700e+09 0.14343920 0.042455857 -26.898269 43.552458 6577.4041 5.1109806e+09 0.13999195 0.039585646 -26.994403 43.420817 6579.9771 4.7403393e+09 0.13616056 0.036533322 -27.090363 43.289431 6582.5502 4.3996491e+09 0.13228657 0.035144075 -27.194200 43.133702 6585.1232 4.0721373e+09 0.12836781 0.033872255 -27.295909 42.984547 6587.6963 3.7741404e+09 0.12467452 0.033312637 -27.391825 42.853290 6590.2693 3.5099761e+09 0.12114769 0.030561087 -27.490037 42.714942 6592.8424 3.2681728e+09 0.11801680 0.027255330 -27.593889 42.559166 6595.4154 3.0357446e+09 0.11523306 0.025666651 -27.690523 42.417023 6597.9885 2.8311479e+09 0.11285778 0.025410807 -27.781392 42.285767 6600.5615 2.6384481e+09 0.11222955 0.026144230 -27.879728 42.140407 6603.1346 2.4506246e+09 0.11131629 0.026583618 -27.983581 41.984628 6605.7076 2.2852191e+09 0.11058225 0.027258663 -28.076503 41.845245 6608.2806 2.1367967e+09 0.10804403 0.023724951 -28.167371 41.708942 6610.8537 2.0018561e+09 0.10439900 0.024818663 -28.269420 41.560838 6613.4267 1.8706256e+09 0.10301925 0.023730162 -28.370968 41.412581 6615.9998 1.7450132e+09 0.10116963 0.023282265 -28.456789 41.276278 6618.5728 1.6356069e+09 0.10024054 0.024203352 -28.544411 41.137961 6621.1459 1.5319689e+09 0.099051342 0.025041094 -28.642493 40.987953 6623.7189 1.4280340e+09 0.096855236 0.024758176 -28.735504 40.843615 6626.2920 1.3351752e+09 0.094959436 0.026218905 -28.821324 40.707311 6628.8650 1.2498272e+09 0.092827500 0.026054301 -28.912452 40.565075 6631.4381 1.1714659e+09 0.090486644 0.025975264 -29.010535 40.415065 6634.0111 1.0977740e+09 0.088309530 0.026327653 -29.096507 40.274644 6636.5842 1.0334406e+09 0.086128222 0.026322900 -29.177280 40.138340 6639.1572 9.7158561e+08 0.084441734 0.025571887 -29.270493 39.988041 6641.7303 9.0762501e+08 0.084475678 0.025150780 -29.368577 39.832264 6644.3033 8.4028649e+08 0.083019674 0.025376386 -29.460974 39.682170 6646.8763 7.7936999e+08 0.081644456 0.026373771 -29.550375 39.535617 6649.4494 7.3100814e+08 0.080562120 0.027014226 -29.631148 39.399314 6652.0224 6.8439854e+08 0.080401734 0.027256694 -29.715052 39.259292 6654.5955 6.4324973e+08 0.079781657 0.027782544 -29.807365 39.109284 6657.1685 6.0447901e+08 0.077977960 0.029096600 -29.893467 38.966651 6659.7416 5.7221347e+08 0.076606103 0.031679905 -29.974239 38.830348 6662.3146 5.3793504e+08 0.075253899 0.032867750 -30.061443 38.686405 6664.8877 5.0404275e+08 0.074637422 0.028958148 -30.153756 38.536394 6667.4607 4.7380582e+08 0.074349883 0.027272686 -30.232399 38.397681 6670.0338 4.4401092e+08 0.073824172 0.027312992 -30.308123 38.261379 6672.6068 4.1729715e+08 0.073668067 0.027231316 -30.392970 38.113519 6675.1799 3.8854181e+08 0.072166449 0.030142843 -30.478880 37.965014 6677.7529 3.6373807e+08 0.070396378 0.031287892 -30.559664 37.828690 6680.3259 3.4622256e+08 0.070675461 0.029511802 -30.641191 37.690599 6682.8990 3.2835385e+08 0.071483983 0.031111408 -30.727721 37.540617 6685.4720 3.0819055e+08 0.071169054 0.033203428 -30.814256 37.390624 6688.0451 2.8586829e+08 0.068636975 0.033795598 -30.900800 37.240613 6690.6181 2.6775650e+08 0.066474645 0.033045025 -30.976837 37.099671 6693.1912 2.5490521e+08 0.065205247 0.031538503 -31.047523 36.963347 6695.7642 2.4016332e+08 0.064446216 0.029719095 -31.129024 36.817691 6698.3373 2.2392205e+08 0.063164006 0.030680761 -31.215567 36.667683 6700.9103 2.0766795e+08 0.060775858 0.031342927 -31.287056 36.530678 6703.4834 1.9590987e+08 0.060126520 0.034884767 -31.357732 36.394374 6706.0564 1.8761955e+08 0.059819338 0.038544583 -31.443766 36.244806 6708.6295 1.7803251e+08 0.058980963 0.040729035 -31.528956 36.094798 6711.2025 1.6437246e+08 0.056760158 0.040922627 -31.609730 35.944787 6713.7756 1.5078864e+08 0.053859175 0.046491623 -31.685440 35.801649 6716.3486 1.3851076e+08 0.051245724 0.048914811 -31.756117 35.665346 6718.9216 1.3001939e+08 0.047921714 0.051247804 -31.832050 35.521908 6721.4947 1.2491965e+08 0.047669193 0.050452951 -31.912823 35.371901 6724.0677 1.1875237e+08 0.044830453 0.049361021 -31.993597 35.221893 6726.6408 1.1479823e+08 0.040217919 0.040957147 -32.074058 35.071573 6729.2138 1.0785389e+08 0.038826010 0.040902905 -32.149063 34.915794 6731.7869 1.0215729e+08 0.035976810 0.043316052 -32.222679 34.767884 6734.3599 98551022. 0.034482315 0.049331944 -32.293355 34.636627 6736.9330 93690690. 0.035747849 0.053882147 -32.365503 34.498995 6739.5060 91599648. 0.035733708 0.063445817 -32.440508 34.348987 6742.0791 88821646. 0.032690509 0.068803398 -32.519013 34.195478 6744.6521 82434352. 0.026669241 0.078297801 -32.599787 34.039699 6747.2252 78580080. 0.020620284 0.067283649 -32.675521 33.888960 6749.7982 74312365. 0.016796621 0.072059385 -32.750526 33.738950 6752.3712 72329096. 0.010792566 0.073704874 -32.825528 33.588942 6754.9443 69692910. 0.0026468620 0.074694929 -32.896715 33.446568 6757.5173 65067623. -0.040583478 0.075170068 -32.962343 33.315314 6760.0904 60589272. -0.0064479596 0.076233633 -33.031968 33.173606 6762.6634 56110056. 0.079942370 0.076980674 -33.106973 33.017828