# # 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 = 55.103386 km # Date (UTC) = 2015-11-19T09:24:19.252 # Date (julian) = 2457345.89188949 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.9884 5.7080099e+10 0.038250931 0.031676605 114.62695 29.142368 6500.5216 5.2014761e+10 0.046689967 0.032440507 114.69469 28.977209 6503.0549 4.7750934e+10 0.055347662 0.033204409 114.75718 28.806798 6505.5882 4.3959719e+10 0.064342604 0.033968311 114.81877 28.644653 6508.1215 4.0764842e+10 0.073859317 0.034732213 114.87841 28.500516 6510.6547 3.8088739e+10 0.084084026 0.035496115 114.93891 28.350146 6513.1880 3.5696238e+10 0.095106072 0.036260017 115.00139 28.185415 6515.7213 3.3129558e+10 0.10676295 0.037023919 115.06388 28.020683 6518.2546 3.0449630e+10 0.11906038 0.037787821 115.12636 27.855951 6520.7878 2.7727297e+10 0.13194250 0.038551723 115.18885 27.691220 6523.3211 2.5210065e+10 0.14182233 0.039258697 115.25117 27.526929 6525.8544 2.3180263e+10 0.14814485 0.039684707 115.30584 27.382791 6528.3876 2.1405976e+10 0.15511302 0.041750005 115.36059 27.238443 6530.9209 1.9757319e+10 0.16030690 0.045117971 115.42307 27.073730 6533.4542 1.8047891e+10 0.16583801 0.047712607 115.48555 26.908999 6535.9875 1.6341165e+10 0.16782265 0.047795937 115.54804 26.744268 6538.5207 1.4935039e+10 0.17145669 0.049410256 115.60671 26.592023 6541.0540 1.3779624e+10 0.17247671 0.051309011 115.66138 26.452856 6543.5873 1.2758798e+10 0.17187937 0.051536031 115.71978 26.301508 6546.1206 1.1791324e+10 0.16982989 0.052563732 115.78226 26.136777 6548.6538 1.0777854e+10 0.16790576 0.053862905 115.84474 25.972046 6551.1871 9.8661662e+09 0.16569624 0.055301431 115.90723 25.807314 6553.7204 9.1205976e+09 0.16353088 0.054972938 115.95751 25.662242 6556.2537 8.5001183e+09 0.16100839 0.053975833 116.00721 25.518084 6558.7869 7.9474281e+09 0.15839434 0.052568738 116.06897 25.354533 6561.3202 7.3635040e+09 0.15543207 0.051214888 116.13041 25.190865 6563.8535 6.7860046e+09 0.15254217 0.048941083 116.18721 25.031814 6566.3868 6.2853696e+09 0.15033873 0.046964096 116.24312 24.879059 6568.9200 5.8757881e+09 0.14834265 0.044925934 116.29780 24.734900 6571.4533 5.5167947e+09 0.14681996 0.044379469 116.35335 24.582285 6573.9866 5.1741510e+09 0.14431923 0.042865775 116.41015 24.417554 6576.5199 4.8486141e+09 0.14195113 0.040773031 116.46234 24.269456 6579.0531 4.5400699e+09 0.13875674 0.037041291 116.51204 24.130289 6581.5864 4.2472933e+09 0.13617721 0.035419038 116.56628 23.974795 6584.1197 3.9666375e+09 0.13351453 0.034450319 116.62308 23.810065 6586.6530 3.7132819e+09 0.13093945 0.033162856 116.67365 23.663419 6589.1862 3.5017785e+09 0.12810465 0.032676526 116.72335 23.519281 6591.7195 3.2997916e+09 0.12456805 0.028390041 116.77921 23.362225 6594.2528 3.0981924e+09 0.12096707 0.026033764 116.83526 23.204752 6596.7860 2.9099139e+09 0.11688420 0.025723700 116.88496 23.060615 6599.3193 2.7464171e+09 0.11392534 0.024948936 116.93533 22.915080 6601.8526 2.5970025e+09 0.11294724 0.027447213 116.99213 22.756028 6604.3859 2.4365173e+09 0.11136017 0.026300392 117.04894 22.595083 6606.9191 2.2715757e+09 0.11073214 0.025852294 117.10574 22.430353 6609.4524 2.1270507e+09 0.10770535 0.023840320 117.15847 22.280268 6611.9857 2.0056425e+09 0.10520975 0.024329877 117.20818 22.141101 6614.5190 1.8911643e+09 0.10438144 0.023582946 117.25868 21.987594 6617.0522 1.7783562e+09 0.10315435 0.023456568 117.30980 21.822863 6619.5855 1.6723101e+09 0.10272636 0.024667189 117.35979 21.678597 6622.1188 1.5808857e+09 0.10161698 0.024726376 117.40949 21.539430 6624.6521 1.4986816e+09 0.099869392 0.025211354 117.46031 21.384583 6627.1853 1.4216110e+09 0.097800109 0.025388402 117.51140 21.225950 6629.7186 1.3512096e+09 0.096490920 0.025979178 117.56110 21.081814 6632.2519 1.2862516e+09 0.094483649 0.026062548 117.61082 20.937437 6634.7852 1.2202609e+09 0.092800370 0.026384116 117.66195 20.778386 6637.3184 1.1554887e+09 0.091048527 0.026005454 117.71271 20.624419 6639.8517 1.0939169e+09 0.090454303 0.025323656 117.76241 20.485251 6642.3850 1.0407477e+09 0.090269082 0.025167450 117.81246 20.341238 6644.9183 9.9129764e+08 0.088883499 0.025442849 117.86358 20.182188 6647.4515 9.3943056e+08 0.087267197 0.026675510 117.91162 20.032747 6649.9848 8.9721243e+08 0.085972631 0.026276189 117.95635 19.893580 6652.5181 8.5458013e+08 0.084962183 0.027393064 118.00410 19.742365 6655.0513 8.0936316e+08 0.083415787 0.027631433 118.05522 19.577635 6657.5846 7.6746022e+08 0.081182592 0.029579254 118.10533 19.431076 6660.1179 7.2628345e+08 0.079601998 0.031733159 118.15503 19.291909 6662.6512 6.9449735e+08 0.078157910 0.032678927 118.20573 19.138845 6665.1844 6.6318611e+08 0.077602769 0.028244912 118.25685 18.979793 6667.7177 6.3084898e+08 0.077154379 0.027367088 118.30198 18.839402 6670.2510 6.0416904e+08 0.076595022 0.027212352 118.34671 18.700236 6672.7843 5.7335058e+08 0.076386580 0.027334174 118.39736 18.542648 6675.3175 5.4427435e+08 0.074642266 0.030406563 118.44743 18.386894 6677.8508 5.1793507e+08 0.072970169 0.031148697 118.49217 18.247706 6680.3841 4.9365246e+08 0.073320737 0.029524357 118.53789 18.105457 6682.9174 4.7405058e+08 0.074115616 0.031125443 118.58900 17.946435 6685.4506 4.4808626e+08 0.073855499 0.033180821 118.63789 17.787400 6687.9839 4.2533330e+08 0.071396411 0.033794164 118.68333 17.628348 6690.5172 4.0672951e+08 0.069250772 0.033056594 118.72832 17.481873 6693.0505 3.9069653e+08 0.068179586 0.031586779 118.77307 17.342687 6695.5837 3.7139461e+08 0.067558282 0.029752249 118.82177 17.194685 6698.1170 3.5020771e+08 0.066674896 0.030378422 118.87289 17.041314 6700.6503 3.3340045e+08 0.064601262 0.031150049 118.91851 16.900174 6703.1836 3.1741490e+08 0.063966784 0.034134546 118.96325 16.761007 6705.7168 3.0755796e+08 0.063912079 0.037942982 119.00859 16.604957 6708.2501 2.9326340e+08 0.063405895 0.040315930 119.05453 16.445906 6710.7834 2.7796670e+08 0.061675114 0.040649831 119.10565 16.286855 6713.3167 2.6290967e+08 0.059319482 0.044831880 119.15305 16.135960 6715.8499 2.4772110e+08 0.057245683 0.048247866 119.19281 16.001764 6718.3832 2.4038500e+08 0.054819101 0.050409216 119.23617 15.859708 6720.9165 2.2953579e+08 0.054699360 0.050313577 119.28729 15.700658 6723.4497 2.2091282e+08 0.053426601 0.049619775 119.33210 15.552658 6725.9830 2.1073521e+08 0.049236935 0.040961974 119.37186 15.413492 6728.5163 1.9957205e+08 0.048619562 0.040359858 119.41780 15.266601 6731.0496 1.9339326e+08 0.046855682 0.041848675 119.46893 15.113231 6733.5828 1.8074297e+08 0.045635167 0.047088728 119.51560 14.955410 6736.1161 1.7363011e+08 0.047207213 0.050793991 119.56104 14.796358 6738.6494 1.6419323e+08 0.048574979 0.060896284 119.60648 14.637307 6741.1827 1.5795125e+08 0.047409953 0.066279660 119.65174 14.484780 6743.7159 1.5390636e+08 0.042561966 0.075877140 119.69647 14.350583 6746.2492 1.4702705e+08 0.039920605 0.076089906 119.74138 14.210161 6748.7825 1.4427742e+08 0.036855113 0.071133587 119.78682 14.051111 6751.3158 1.3857190e+08 0.033256564 0.073845176 119.83227 13.894843 6753.8490 1.3297896e+08 0.030739564 0.075724919 119.87771 13.741473 6756.3823 1.2552271e+08 0.027859968 0.075150645 119.92316 13.588102 6758.9156 1.1543490e+08 0.028138459 0.075641442 119.96860 13.434731 6761.4489 1.0656696e+08 0.030090849 0.078005309 120.01955 13.275855 6763.9821 1.0334243e+08 0.034863287 0.079428863 120.06830 13.121991 6766.5154 1.0098711e+08 0.036056065 0.080879601 120.10806 12.987795 6769.0487 99194173. 0.030982084 0.084572327 120.14894 12.848709 6771.5820 93389300. 0.026393174 0.090716631 120.19438 12.689659 6774.1152 87809852. 0.021821960 0.096860934 120.23983 12.533086 6776.6485 84609425. 0.017241868 0.10300524 120.28527 12.379715 6779.1818 81445190. 0.012657269 0.10914954 120.33071 12.226344 6781.7150 79975915. 0.0080639369 0.11529384 120.37615 12.072973 6784.2483 75311451. 0.0034741666 0.12143815 120.42160 11.919602 6786.7816 72689476. -0.0011213166 0.12758245 120.46704 11.765351 6789.3149 70962849. -0.0057166090 0.13372675 120.51249 11.606301 6791.8481 68540321. -0.010317537 0.13987106 120.55793 11.449491 6794.3814 67715088. -0.014908595 0.14601536 120.60337 11.296120 6796.9147 63839948. -0.019546794 0.15215966 120.64882 11.142750 6799.4480 61371605. -0.024193991 0.15830397 120.69426 10.989380 6801.9812 57127792. -0.028924497 0.16444827 120.73474 10.836009 6804.5145 54632765. -0.033701900 0.17059257 120.77514 10.682638 6807.0478 53597702. -0.038566919 0.17673688 120.82059 10.529267 6809.5811 50443999. -0.043805164 0.18288118 120.86603 10.375896 6812.1143 52031873. -0.049832004 0.18902548 120.91147 10.222526 6814.6476 48831703. -0.064837576 0.19516979 120.95692 10.069155 6817.1809 46603723. -0.060792815 0.20131409 121.00236 9.9157851 6819.7142 42908256. -0.045038228 0.20745839 121.04859 9.7411756