# # 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 = 37.560031 km # Date (UTC) = 2010-12-22T08:02:03.547 # Date (julian) = 2455552.83476328 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6498.0879 2.7095718e+11 0.041319407 0.031706635 -7.1711708 43.400037 6500.3307 1.9402660e+11 0.049720327 0.032382939 -7.2521983 43.301144 6502.5735 1.4970910e+11 0.058022988 0.033059243 -7.3304245 43.199449 6504.8163 1.1892829e+11 0.066345062 0.033735547 -7.4086506 43.097754 6507.0591 9.7944468e+10 0.074925859 0.034411851 -7.4971867 42.986817 6509.3018 8.1268212e+10 0.083736480 0.035088154 -7.5895927 42.872410 6511.5446 6.8262253e+10 0.092905051 0.035764458 -7.6755586 42.765553 6513.7874 5.8350224e+10 0.10263562 0.036440762 -7.7537951 42.667757 6516.0302 5.0956000e+10 0.11315032 0.037117066 -7.8320316 42.569962 6518.2730 4.5253261e+10 0.12451408 0.037793370 -7.9137719 42.468664 6520.5157 4.0488150e+10 0.13665382 0.038469674 -7.9959094 42.366969 6522.7585 3.6543351e+10 0.14748157 0.039115876 -8.0767113 42.265275 6525.0013 3.3071854e+10 0.15544529 0.039782068 -8.1549372 42.163582 6527.2441 2.9967832e+10 0.16155547 0.040893667 -8.2331631 42.061889 6529.4868 2.7141521e+10 0.16701611 0.043011289 -8.3083197 41.963264 6531.7296 2.4681686e+10 0.17228502 0.046290658 -8.3826344 41.865482 6533.9724 2.2434822e+10 0.17558081 0.047932830 -8.4600748 41.763903 6536.2152 2.0256765e+10 0.17659357 0.047983031 -8.5480940 41.649478 6538.4580 1.8228051e+10 0.17773366 0.049379684 -8.6361132 41.535052 6540.7007 1.6364459e+10 0.17676512 0.051185150 -8.7110332 41.432796 6542.9435 1.4868068e+10 0.17454853 0.051360450 -8.7853479 41.331103 6545.1863 1.3651893e+10 0.17250172 0.052457236 -8.8596627 41.230971 6547.4291 1.2585113e+10 0.17027503 0.053450534 -8.9339776 41.133188 6549.6719 1.1664449e+10 0.16827504 0.054650953 -9.0082925 41.035406 6551.9146 1.0834575e+10 0.16643862 0.055556801 -9.0826073 40.934327 6554.1574 1.0101637e+10 0.16382618 0.054835683 -9.1569220 40.832632 6556.4002 9.3851291e+09 0.16146953 0.053954290 -9.2338917 40.727305 6558.6430 8.6418174e+09 0.15892696 0.052691416 -9.3174969 40.612898 6560.8857 7.9136762e+09 0.15587560 0.051475695 -9.4009103 40.498733 6563.1285 7.2367839e+09 0.15325440 0.049779693 -9.4713413 40.400915 6565.3713 6.6497031e+09 0.15050602 0.047896777 -9.5417543 40.303119 6567.6141 6.1541103e+09 0.14802645 0.046097965 -9.6139499 40.203543 6569.8569 5.6953682e+09 0.14571800 0.044908193 -9.6882648 40.101849 6572.0996 5.2875580e+09 0.14304856 0.044173095 -9.7625797 40.000156 6574.3424 4.9192737e+09 0.13956473 0.042690543 -9.8333736 39.901983 6576.5852 4.5869063e+09 0.13600667 0.040697820 -9.9037770 39.804200 6578.8280 4.2695717e+09 0.13172478 0.037342145 -9.9772034 39.700707 6581.0708 3.9328300e+09 0.12780175 0.035575184 -10.056409 39.586299 6583.3135 3.6102969e+09 0.12428944 0.034862970 -10.134991 39.472791 6585.5563 3.3177159e+09 0.12029893 0.033526015 -10.205404 39.371084 6587.7991 3.0724115e+09 0.11674305 0.033335417 -10.275817 39.269377 6590.0419 2.8688866e+09 0.11318856 0.030984187 -10.344212 39.169689 6592.2846 2.6807466e+09 0.10982649 0.027797048 -10.410704 39.071907 6594.5274 2.5132473e+09 0.10716625 0.025882992 -10.477196 38.974124 6596.7702 2.3688554e+09 0.10436773 0.025723772 -10.547435 38.872594 6599.0130 2.2359970e+09 0.10222999 0.024930511 -10.617838 38.770899 6601.2558 2.0984548e+09 0.10210944 0.027166139 -10.690008 38.665870 6603.4985 1.9471401e+09 0.10082755 0.026368140 -10.764812 38.555863 6605.7413 1.7971236e+09 0.10028115 0.027286950 -10.838549 38.446925 6607.9841 1.6650692e+09 0.098144894 0.023763774 -10.905041 38.345231 6610.2269 1.5590990e+09 0.094900728 0.024219753 -10.971533 38.243538 6612.4697 1.4720916e+09 0.092667662 0.023969844 -11.038030 38.141836 6614.7124 1.3935418e+09 0.091269967 0.023449654 -11.104531 38.040128 6616.9552 1.3172905e+09 0.089529968 0.023432219 -11.171166 37.938286 6619.1980 1.2347474e+09 0.088573773 0.024573686 -11.245966 37.828284 6621.4408 1.1493779e+09 0.087410967 0.024943352 -11.320771 37.718277 6623.6835 1.0666622e+09 0.085389565 0.024745069 -11.386494 37.614446 6625.9263 9.9615567e+08 0.083883220 0.026502988 -11.449075 37.512753 6628.1691 9.3423967e+08 0.081797009 0.025771753 -11.512385 37.411788 6630.4119 8.7956182e+08 0.079896915 0.025929317 -11.578877 37.314005 6632.6547 8.3050187e+08 0.077942791 0.026110844 -11.645369 37.216223 6634.8974 7.8414653e+08 0.076077173 0.026392306 -11.714324 37.107973 6637.1402 7.3462348e+08 0.074297890 0.026092737 -11.784729 36.993565 6639.3830 6.8304115e+08 0.073535627 0.025491183 -11.852343 36.885087 6641.6258 6.3817497e+08 0.074219042 0.025150425 -11.914933 36.787291 6643.8686 5.9850616e+08 0.073704003 0.025323759 -11.977522 36.689495 6646.1113 5.6442076e+08 0.073078542 0.025977776 -12.040104 36.588579 6648.3541 5.3312015e+08 0.072368907 0.027201327 -12.102685 36.486885 6650.5969 4.9992820e+08 0.072110996 0.026391882 -12.167175 36.383164 6652.8397 4.7107230e+08 0.072019027 0.027481548 -12.237579 36.273157 6655.0824 4.4023515e+08 0.071135097 0.027644283 -12.307984 36.163150 6657.3252 4.1130107e+08 0.069563311 0.029278362 -12.370789 36.061219 6659.5680 3.8872597e+08 0.068327723 0.031716112 -12.433370 35.959526 6661.8108 3.6772116e+08 0.067103542 0.032947899 -12.497370 35.854385 6664.0536 3.4615642e+08 0.065953011 0.032010111 -12.563375 35.744377 6666.2963 3.2547680e+08 0.066228728 0.026966341 -12.628894 35.635548 6668.5391 3.0573681e+08 0.065403532 0.027947855 -12.691483 35.533840 6670.7819 2.8912341e+08 0.065368088 0.026966392 -12.754072 35.432132 6673.0247 2.7045650e+08 0.065171829 0.027496121 -12.818662 35.325563 6675.2675 2.5204661e+08 0.063561032 0.030310629 -12.884666 35.215556 6677.5102 2.3345885e+08 0.061914187 0.031632870 -12.948374 35.109377 6679.7530 2.1956600e+08 0.061953559 0.029645517 -13.007043 35.011594 6681.9958 2.1036220e+08 0.062824615 0.030421312 -13.065712 34.913812 6684.2386 1.9588219e+08 0.063076293 0.032666198 -13.129931 34.803453 6686.4813 1.8378529e+08 0.062109902 0.034041139 -13.195935 34.689046 6688.7241 1.7020097e+08 0.059384649 0.033952343 -13.261940 34.576768 6690.9669 1.5901727e+08 0.058350500 0.033005056 -13.327944 34.466760 6693.2097 1.4962860e+08 0.057682999 0.031532155 -13.392400 34.359334 6695.4525 1.4288353e+08 0.057421434 0.029776362 -13.451077 34.261539 6697.6952 1.3532853e+08 0.056932898 0.030179249 -13.509755 34.163743 6699.9380 1.2779418e+08 0.055590492 0.030724910 -13.570349 34.055067 6702.1808 1.2057008e+08 0.054176783 0.033021097 -13.631953 33.940658 6704.4236 1.1266221e+08 0.054723437 0.036385551 -13.692435 33.832607 6706.6664 1.0832383e+08 0.054709544 0.039606141 -13.751104 33.734825 6708.9091 1.0036225e+08 0.054320307 0.041033591 -13.809774 33.637042 6711.1519 95573643. 0.052722438 0.040865065 -13.870867 33.529166 6713.3947 91448311. 0.050761564 0.045114130 -13.932471 33.419158 6715.6375 85316971. 0.048987983 0.048030572 -13.996509 33.306717 6717.8802 80102038. 0.047031557 0.049819821 -14.062513 33.192310 6720.1230 72698197. 0.046008623 0.050405512 -14.127283 33.079138 6722.3658 67812899. 0.045942487 0.050152976 -14.188887 32.969131 6724.6086 64886252. 0.042687890 0.044844611 -14.250423 32.859245 6726.8514 60008913. 0.040205501 0.040959046 -14.305202 32.761425 6729.0941 58010669. 0.039911296 0.040982681 -14.359968 32.663630 6731.3369 55373174. 0.038059482 0.042420553 -14.417822 32.560319 6733.5797 52679502. 0.036739581 0.047071648 -14.479426 32.450311 6735.8225 50678150. 0.037584752 0.050166550 -14.540242 32.339515 6738.0653 50017729. 0.037745708 0.057680341 -14.597446 32.225107 6740.3080 50917332. 0.029405558 0.064576582 -14.654650 32.110699 6742.5508 52849211. 0.034192411 0.069952905 -14.715842 32.000281 6744.7936 51248956. 0.044674473 0.078407233 -14.777447 31.890274