# # 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 = 49.723120 km # Date (UTC) = 2015-12-09T10:22:35.019 # Date (julian) = 2457365.93234976 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.4338 6.6743495e+10 0.023417249 0.030604748 100.84295 26.497713 6496.6102 6.1026506e+10 0.030211171 0.031261026 100.89258 26.394440 6498.7866 5.5805721e+10 0.037157555 0.031917304 100.94810 26.274863 6500.9629 5.0861356e+10 0.044331977 0.032573582 101.00361 26.155286 6503.1393 4.6335019e+10 0.051856519 0.033229860 101.05210 26.045086 6505.3157 4.2671565e+10 0.060010108 0.033886138 101.09765 25.938812 6507.4920 3.9578613e+10 0.068903109 0.034542416 101.14346 25.832805 6509.6684 3.6771369e+10 0.078514680 0.035198694 101.19280 25.730326 6511.8448 3.4126823e+10 0.088885742 0.035854973 101.24214 25.627848 6514.0212 3.1702179e+10 0.10007687 0.036511251 101.28983 25.523717 6516.1975 2.9384115e+10 0.11205142 0.037167529 101.33538 25.417444 6518.3739 2.7185746e+10 0.12478906 0.037823807 101.38093 25.311170 6520.5503 2.5112101e+10 0.13821117 0.038480085 101.42648 25.207925 6522.7266 2.3211959e+10 0.15029713 0.039107527 101.47203 25.105433 6524.9030 2.1460022e+10 0.15937071 0.039747753 101.51821 25.002312 6527.0794 1.9831906e+10 0.16672823 0.040774088 101.56755 24.896038 6529.2557 1.8353252e+10 0.17247249 0.042643141 101.61690 24.789764 6531.4321 1.6973919e+10 0.17756197 0.045857605 101.66422 24.685508 6533.6085 1.5725397e+10 0.18072758 0.047778167 101.70977 24.583030 6535.7848 1.4565559e+10 0.18041021 0.047883838 101.75531 24.480552 6537.9612 1.3489347e+10 0.18044235 0.049138390 101.80086 24.378074 6540.1376 1.2567045e+10 0.17921439 0.050919095 101.84640 24.275596 6542.3139 1.1676886e+10 0.17633344 0.051121427 101.89344 24.168637 6544.4903 1.0786317e+10 0.17408839 0.052042096 101.94468 24.049077 6546.6667 9.9245821e+09 0.17185682 0.053013094 101.99592 23.929517 6548.8430 9.1479461e+09 0.16960229 0.053919408 102.04193 23.825667 6551.0194 8.4968675e+09 0.16766394 0.055242566 102.08748 23.723175 6553.1958 7.9362450e+09 0.16610597 0.055236650 102.13195 23.620687 6555.3722 7.4178936e+09 0.16388775 0.054540669 102.17370 23.518208 6557.5485 6.9308954e+09 0.16157146 0.053522294 102.21545 23.415730 6559.7249 6.4870006e+09 0.15884667 0.052305362 102.25967 23.310780 6561.9013 6.0705104e+09 0.15584914 0.050928562 102.30521 23.204506 6564.0776 5.6810944e+09 0.15253382 0.048736418 102.35076 23.098298 6566.2540 5.3286436e+09 0.14998098 0.047039201 102.39630 22.995818 6568.4304 5.0237224e+09 0.14777173 0.045376058 102.44185 22.893340 6570.6067 4.7364598e+09 0.14562270 0.044666181 102.48595 22.790856 6572.7831 4.4742824e+09 0.14313489 0.043781696 102.52770 22.688364 6574.9595 4.2360943e+09 0.14018690 0.042394176 102.56946 22.585872 6577.1358 4.0067074e+09 0.13674812 0.040007009 102.61405 22.483391 6579.3122 3.8093177e+09 0.13275467 0.036898866 102.65959 22.380913 6581.4886 3.6077041e+09 0.12945722 0.035448663 102.70530 22.276990 6583.6649 3.3995994e+09 0.12676816 0.034685104 102.75227 22.161700 6585.8413 3.1924625e+09 0.12449274 0.033298167 102.79924 22.046410 6588.0177 2.9944730e+09 0.12316450 0.033374028 102.84511 21.940996 6590.1940 2.8186832e+09 0.12117355 0.030701115 102.89066 21.838518 6592.3704 2.6672322e+09 0.11885640 0.027713743 102.93569 21.736038 6594.5468 2.5273325e+09 0.11658325 0.025872367 102.97744 21.633546 6596.7231 2.3950567e+09 0.11401311 0.025723986 103.01920 21.531054 6598.8995 2.2802327e+09 0.11208349 0.024977704 103.06095 21.428569 6601.0759 2.1660891e+09 0.11203898 0.027081428 103.10270 21.326090 6603.2523 2.0657834e+09 0.11086630 0.026513940 103.14446 21.223612 6605.4286 1.9735464e+09 0.11008984 0.027024624 103.18621 21.121134 6607.6050 1.8835013e+09 0.10818613 0.024512365 103.22796 21.018657 6609.7814 1.7992702e+09 0.10502767 0.023938032 103.27092 20.913201 6611.9577 1.6997709e+09 0.10247504 0.024347709 103.31789 20.797910 6614.1341 1.6016982e+09 0.10140371 0.023848105 103.36486 20.682620 6616.3105 1.5096869e+09 0.099812076 0.023331026 103.40718 20.578740 6618.4868 1.4267616e+09 0.099025621 0.024138413 103.44893 20.476261 6620.6632 1.3558274e+09 0.098040637 0.024980913 103.49068 20.373779 6622.8396 1.2880603e+09 0.096400878 0.024534527 103.53244 20.271287 6625.0159 1.2238459e+09 0.094710428 0.025416623 103.57419 20.168795 6627.1923 1.1681061e+09 0.092302530 0.025391095 103.61594 20.066312 6629.3687 1.1249570e+09 0.090856599 0.026042447 103.65769 19.963835 6631.5450 1.0821838e+09 0.088991555 0.025986131 103.69944 19.861357 6633.7214 1.0332782e+09 0.087692172 0.026278204 103.74635 19.746237 6635.8978 9.7673708e+08 0.086536812 0.026534423 103.79332 19.630947 6638.0741 9.1886696e+08 0.085896018 0.025668412 103.83447 19.526366 6640.2505 8.7465523e+08 0.086140281 0.025240001 103.87243 19.427682 6642.4269 8.3757955e+08 0.086269711 0.025169165 103.91043 19.328958 6644.6033 8.0286668e+08 0.085426771 0.025408805 103.95218 19.226469 6646.7796 7.7554810e+08 0.084377302 0.026323705 103.99393 19.123977 6648.9560 7.4176806e+08 0.083263173 0.027604227 104.03765 19.016676 6651.1324 7.0338845e+08 0.083062973 0.026585599 104.08462 18.901387 6653.3087 6.6480263e+08 0.082761002 0.027683286 104.13128 18.786660 6655.4851 6.2444582e+08 0.081446952 0.027810658 104.16924 18.687977 6657.6615 5.9287238e+08 0.079879575 0.029668387 104.20720 18.589295 6659.8378 5.6689866e+08 0.078467663 0.031659826 104.24667 18.489097 6662.0142 5.4449103e+08 0.076951071 0.033036304 104.28841 18.386618 6664.1906 5.2725290e+08 0.075632047 0.031508808 104.33016 18.284139 6666.3669 5.0656430e+08 0.075575750 0.026980097 104.37264 18.171867 6668.5433 4.7850927e+08 0.074590775 0.027951560 104.41534 18.056577 6670.7197 4.4874666e+08 0.074462848 0.026995219 104.45604 17.948299 6672.8960 4.2678375e+08 0.074093782 0.027398961 104.49400 17.849603 6675.0724 4.1411274e+08 0.072407376 0.029937048 104.53196 17.750907 6677.2488 4.0285064e+08 0.070243363 0.032004554 104.57702 17.639132 6679.4251 3.8567043e+08 0.069933394 0.029916449 104.62399 17.523842 6681.6015 3.6304722e+08 0.071006766 0.030118831 104.66694 17.415964 6683.7779 3.4404314e+08 0.071533435 0.032328577 104.70489 17.317282 6685.9543 3.3105079e+08 0.071220714 0.033712762 104.74285 17.218600 6688.1306 3.1818529e+08 0.068900656 0.033815342 104.78465 17.106439 6690.3070 3.0609111e+08 0.067264886 0.033080683 104.82735 16.991149 6692.4834 2.9252786e+08 0.066467934 0.032204036 104.86782 16.883658 6694.6597 2.8182968e+08 0.065880428 0.030336388 104.90578 16.784975 6696.8361 2.7275183e+08 0.065569862 0.030023165 104.94373 16.686292 6699.0125 2.5959843e+08 0.064456380 0.031578934 104.98565 16.577309 6701.1888 2.4763490e+08 0.062795013 0.031686513 105.02835 16.466289 6703.3652 2.3863904e+08 0.062743286 0.034589077 105.06872 16.359474 6705.5416 2.2847038e+08 0.062915799 0.037631402 105.10668 16.256982 6707.7179 2.1841796e+08 0.062662243 0.040083983 105.14463 16.154490 6709.8943 2.0852824e+08 0.061709306 0.040563723 105.18666 16.044676 6712.0707 1.9893993e+08 0.059642752 0.041961172 105.22936 15.933655 6714.2470 1.9601350e+08 0.057479858 0.047321981 105.27206 15.822636 6716.4234 1.9186688e+08 0.055616126 0.049025001 105.31476 15.711616 6718.5998 1.8295776e+08 0.053344313 0.050746520 105.35663 15.602089 6720.7761 1.7425375e+08 0.053259076 0.050329836 105.39459 15.499611 6722.9525 1.6277164e+08 0.052443350 0.049427650 105.43254 15.397133 6725.1289 1.5306914e+08 0.048201218 0.041495514 105.47306 15.290042 6727.3052 1.4459145e+08 0.046766627 0.040553706 105.51576 15.179022 6729.4816 1.3054801e+08 0.046190166 0.040724417 105.55846 15.068002 6731.6580 1.2350387e+08 0.044445304 0.043059539 105.60116 14.956982 6733.8344 1.1849057e+08 0.043343266 0.048454263 105.64386 14.845961 6736.0107 1.1294849e+08 0.044904415 0.050395546 105.68291 14.734941 6738.1871 1.0962007e+08 0.046081783 0.058351115 105.72133 14.623921 6740.3635 1.0051890e+08 0.045634163 0.064671270 105.75952 14.519240 6742.5398 97361246. 0.042702953 0.069926144 105.79748 14.420545 6744.7162 93620965. 0.038720833 0.078347372 105.83544 14.321849 6746.8926 93896373. 0.034264228 0.068610214 105.87757 14.212309 6749.0689 92259561. 0.033724999 0.072259059 105.92027 14.101289 6751.2453 86020001. 0.030376101 0.073815386 105.96068 13.990269 6753.4217 80401521. 0.027861924 0.074341890 105.99911 13.879249 6755.5980 74805756. 0.025542127 0.074343144 106.03837 13.768229 6757.7744 75558521. 0.024160182 0.074389939 106.08107 13.657209 6759.9508 77238128. 0.024828773 0.076049392 106.12377 13.546188 6762.1271 79384101. 0.028573074 0.077845752 106.16282 13.435169 6764.3035 73610169. 0.031366395 0.079497826 106.20126 13.324149 6766.4799 71585288. 0.032184343 0.080799244 106.24187 13.213130 6768.6562 66646676. 0.027830054 0.083217361 106.28457 13.102110 6770.8326 61518545. 0.023272634 0.088899162 106.32655 12.991090 6773.0090 61379959. 0.019076382 0.094177812 106.36498 12.880070 6775.1854 60914136. 0.014746411 0.099456462 106.40341 12.769050 6777.3617 60790114. 0.010237563 0.10473511 106.44538 12.658017 6779.5381 60462359. 0.0052898555 0.11001376 106.48809 12.546980 6781.7145 56991060. -0.0017329394 0.11529241 106.52871 12.435952 6783.8908 52163292. -0.024398736 0.12057106 106.56714 12.324931 6786.0672 50759246. -0.013185500 0.12584971 106.60557 12.213911 6788.2436 46903995. 0.017241607 0.13112836 106.64400 12.102891