# # 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 = 54.688768 km # Date (UTC) = 2015-11-20T10:11:49.814 # Date (julian) = 2457346.92488211 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6492.7929 7.1643546e+10 0.027974705 0.030109913 102.65752 29.110164 6495.1186 6.7237479e+10 0.034712962 0.030811234 102.71831 28.963237 6497.4443 6.2391887e+10 0.041235530 0.031512555 102.78090 28.812002 6499.7701 5.7218308e+10 0.047566032 0.032213876 102.84348 28.660765 6502.0958 5.2647837e+10 0.053895818 0.032915197 102.90606 28.509529 6504.4216 4.8177570e+10 0.060381186 0.033616518 102.96375 28.358292 6506.7473 4.4258699e+10 0.067261356 0.034317839 103.02106 28.207423 6509.0730 4.0930152e+10 0.074832564 0.035019160 103.07582 28.075095 6511.3988 3.8141056e+10 0.083367930 0.035720481 103.13058 27.942767 6513.7245 3.5496303e+10 0.092925546 0.036421802 103.18750 27.794784 6516.0503 3.2731272e+10 0.10344840 0.037123123 103.24486 27.643547 6518.3760 3.0221437e+10 0.11524884 0.037824444 103.29570 27.509525 6520.7017 2.8049120e+10 0.12847337 0.038525765 103.34589 27.377196 6523.0275 2.6123745e+10 0.14019866 0.039185924 103.40124 27.231275 6525.3532 2.4172638e+10 0.14911233 0.039741902 103.45861 27.080038 6527.6790 2.2118245e+10 0.15735719 0.041209408 103.51597 26.928802 6530.0047 2.0225579e+10 0.16550947 0.043835284 103.57334 26.777566 6532.3304 1.8693901e+10 0.17212829 0.046960245 103.62840 26.647074 6534.6562 1.7417333e+10 0.17624741 0.048128119 103.68315 26.519309 6536.9819 1.6238167e+10 0.17776837 0.048669058 103.73610 26.375294 6539.3077 1.5052634e+10 0.17725016 0.050016054 103.78826 26.224058 6541.6334 1.3919965e+10 0.17514606 0.051121119 103.83889 26.087471 6543.9592 1.2926944e+10 0.17251079 0.051633627 103.88909 25.955142 6546.2849 1.2019396e+10 0.17026435 0.052698946 103.94346 25.811785 6548.6106 1.1107117e+10 0.16840509 0.053850002 104.00082 25.660549 6550.9364 1.0251966e+10 0.16643781 0.055219819 104.05341 25.524939 6553.2621 9.5180755e+09 0.16488816 0.055203306 104.10361 25.397173 6555.5879 8.8601445e+09 0.16261630 0.054359426 104.15473 25.258276 6557.9136 8.2251366e+09 0.16054407 0.053293463 104.20688 25.107040 6560.2393 7.6117474e+09 0.15791999 0.052058516 104.25795 24.966330 6562.5651 7.0810987e+09 0.15504019 0.050342211 104.30814 24.834001 6564.8908 6.6184657e+09 0.15243658 0.048367878 104.35904 24.696671 6567.2166 6.1788598e+09 0.15009743 0.046434081 104.41120 24.550650 6569.5423 5.7523236e+09 0.14804457 0.044887720 104.46247 24.410759 6571.8680 5.3734516e+09 0.14609037 0.044266196 104.51267 24.278431 6574.1938 5.0448508e+09 0.14315177 0.042761933 104.56336 24.142595 6576.5195 4.7140640e+09 0.14035991 0.040773412 104.61551 23.996573 6578.8453 4.4070951e+09 0.13681385 0.037314844 104.66545 23.855188 6581.1710 4.1290710e+09 0.13351280 0.035544826 104.71108 23.722860 6583.4967 3.8892257e+09 0.13036555 0.034770236 104.75767 23.587750 6585.8225 3.6555008e+09 0.12707765 0.033313214 104.80982 23.436513 6588.1482 3.4120563e+09 0.12478264 0.033330430 104.86152 23.290665 6590.4740 3.1921376e+09 0.12216494 0.030180413 104.91172 23.162900 6592.7997 3.0072582e+09 0.11990895 0.027296765 104.96174 23.035134 6595.1254 2.8598345e+09 0.11750502 0.025636581 105.00737 22.907349 6597.4512 2.7233177e+09 0.11502833 0.025580349 105.05301 22.779564 6599.7769 2.5744321e+09 0.11401602 0.024976459 105.09975 22.631918 6602.1027 2.4262855e+09 0.11370209 0.027429017 105.14669 22.480681 6604.4284 2.2899796e+09 0.11250203 0.026325654 105.19241 22.351258 6606.7542 2.1680888e+09 0.11171813 0.026148773 105.23804 22.223493 6609.0799 2.0575541e+09 0.10858816 0.023729664 105.28848 22.078410 6611.4056 1.9387183e+09 0.10578713 0.024699780 105.34063 21.927173 6613.7314 1.8188508e+09 0.10482131 0.023841934 105.38743 21.795191 6616.0571 1.7180431e+09 0.10319735 0.023291263 105.43306 21.667425 6618.3829 1.6350697e+09 0.10242382 0.024059899 105.47869 21.539660 6620.7086 1.5660023e+09 0.10137241 0.024995543 105.52433 21.411894 6623.0343 1.4973198e+09 0.099606249 0.024504549 105.57053 21.276144 6625.3601 1.4212748e+09 0.097893256 0.025827289 105.61746 21.130123 6627.6858 1.3477665e+09 0.095708760 0.025581733 105.66372 20.991219 6630.0116 1.2809276e+09 0.094079243 0.025928330 105.70935 20.858890 6632.3373 1.2216474e+09 0.091902645 0.026072791 105.75541 20.722067 6634.6630 1.1602239e+09 0.090016375 0.026375208 105.80234 20.576046 6636.9888 1.0956396e+09 0.088181078 0.026165767 105.84874 20.437522 6639.3145 1.0383226e+09 0.087227187 0.025515656 105.89437 20.309756 6641.6403 9.8598623e+08 0.087829138 0.025150475 105.94029 20.177987 6643.9660 9.3930594e+08 0.087095959 0.025338474 105.98722 20.031967 6646.2917 8.9017794e+08 0.086345662 0.026071166 106.03376 19.891454 6648.6175 8.3890262e+08 0.085460702 0.027377634 106.07940 19.763688 6650.9432 7.9596965e+08 0.085151550 0.026471169 106.12453 19.635923 6653.2690 7.6664667e+08 0.084788491 0.027662988 106.16559 19.508158 6655.5947 7.4006872e+08 0.083240588 0.027855952 106.20666 19.380393 6657.9205 7.0807176e+08 0.081673674 0.029968807 106.25312 19.235856 6660.2462 6.7331366e+08 0.080227692 0.031849775 106.30003 19.089902 6662.5719 6.3886545e+08 0.078861368 0.032723382 106.34112 18.962089 6664.8977 6.1285387e+08 0.078073590 0.028921532 106.38218 18.834322 6667.2234 5.8807963e+08 0.077619593 0.027185522 106.42800 18.691777 6669.5492 5.5964994e+08 0.076661235 0.027791680 106.47494 18.545757 6671.8749 5.3620901e+08 0.076493703 0.026877816 106.51664 18.416021 6674.2006 5.1100585e+08 0.075527242 0.029124043 106.55770 18.288255 6676.5264 4.8549317e+08 0.073117668 0.032052973 106.60288 18.147700 6678.8521 4.6167551e+08 0.072165136 0.030366679 106.64982 18.001679 6681.1779 4.3902522e+08 0.073121701 0.029793811 106.69216 17.869953 6683.5036 4.2275247e+08 0.073471909 0.031926615 106.73323 17.742188 6685.8293 4.0519910e+08 0.072884386 0.033580828 106.77776 17.603623 6688.1551 3.8675321e+08 0.070206483 0.033820989 106.82470 17.457601 6690.4808 3.6901531e+08 0.068337616 0.033060761 106.86768 17.326947 6692.8066 3.5628699e+08 0.067396404 0.031828713 106.90876 17.203726 6695.1323 3.4427674e+08 0.066869777 0.029835171 106.95266 17.069496 6697.4580 3.2936231e+08 0.066367204 0.030149232 106.99959 16.923476 6699.7838 3.1489583e+08 0.064976045 0.030867220 107.04321 16.787775 6702.1095 2.9792528e+08 0.063413654 0.032964189 107.08428 16.660009 6704.4353 2.8587523e+08 0.063911447 0.036391294 107.12754 16.527369 6706.7610 2.7260061e+08 0.063815098 0.039770884 107.17448 16.386563 6709.0868 2.5993386e+08 0.063285521 0.041077365 107.21665 16.251706 6711.4125 2.5249748e+08 0.061360802 0.041161536 107.25316 16.123941 6713.7382 2.4357790e+08 0.059113004 0.046356654 107.29243 15.991342 6716.0640 2.3527382e+08 0.057224194 0.048495587 107.33936 15.845321 6718.3897 2.2722373e+08 0.054862203 0.050419365 107.38268 15.707222 6720.7155 2.1642648e+08 0.054528819 0.050336868 107.41918 15.584020 6723.0412 2.0533594e+08 0.053667390 0.049391920 107.45731 15.457264 6725.3669 1.9555398e+08 0.049339171 0.041346812 107.50424 15.311243 6727.6927 1.8539392e+08 0.048161072 0.040037540 107.55118 15.166465 6730.0184 1.7866986e+08 0.046905832 0.040404157 107.59811 15.025659 6732.3442 1.7351356e+08 0.045195337 0.043803568 107.64170 14.889034 6734.6699 1.6566355e+08 0.044805105 0.049313294 107.67821 14.761267 6736.9956 1.6031807e+08 0.046553524 0.054119088 107.71539 14.631817 6739.3214 1.5541511e+08 0.047064153 0.063219863 107.75711 14.491011 6741.6471 1.4608456e+08 0.045269347 0.067604325 107.79993 14.349102 6743.9729 1.4258469e+08 0.040316960 0.077610354 107.84687 14.203081 6746.2986 1.3423434e+08 0.038096768 0.075515661 107.89073 14.063771 6748.6243 1.2971581e+08 0.035306870 0.070301604 107.92724 13.940568 6750.9501 1.2605224e+08 0.032480490 0.073626442 107.96428 13.815560 6753.2758 1.1885378e+08 0.029608950 0.073869918 108.00600 13.674754 6755.6016 1.1582768e+08 0.027339643 0.074341596 108.04868 13.532984 6757.9273 1.1065761e+08 0.026185432 0.073925920 108.09562 13.386961 6760.2531 1.0535574e+08 0.026867184 0.076543826 108.13976 13.247043 6762.5788 1.0039006e+08 0.031396920 0.077117208 108.17627 13.123841 6764.9045 98298811. 0.034264825 0.079526619 108.21317 12.999301 6767.2303 94290624. 0.033796845 0.081717920 108.25489 12.858495 6769.5560 93135570. 0.028713944 0.085802838 108.29661 12.716863 6771.8818 89098879. 0.024503835 0.091443782 108.33833 12.570842 6774.2075 85667123. 0.020294592 0.097084726 108.38005 12.426078 6776.5332 83141362. 0.016096504 0.10272567 108.42177 12.285271 6778.8590 80713230. 0.011898178 0.10836661 108.46518 12.144465 6781.1847 78160453. 0.0077016881 0.11400756 108.51211 12.003659 6783.5105 72560171. 0.0034598244 0.11964850 108.55693 11.862852 6785.8362 68058992. -0.00078148474 0.12528945 108.59866 11.722046 6788.1619 66576987. -0.0049856687 0.13093039 108.64037 11.581240 6790.4877 63144981. -0.0092456410 0.13657133 108.68209 11.440435 6792.8134 59864236. -0.013530238 0.14221228 108.72083 11.309677 6795.1392 57752448. -0.017820275 0.14785322 108.75734 11.186474 6797.4649 53765085. -0.022260871 0.15349417 108.79582 11.056595 6799.7906 55197301. -0.026571526 0.15913511 108.83754 10.915789 6802.1164 54100325. -0.031226365 0.16477606 108.87686 10.774983 6804.4421 51400202. -0.036436418 0.17041700 108.91336 10.634176 6806.7679 50151143. -0.043103468 0.17605794 108.95271 10.493369 6809.0936 46785823. -0.063063483 0.18169889 108.99443 10.352564 6811.4193 44940666. -0.054614608 0.18733983 109.04050 10.197048 6813.7451 43933935. -0.029832835 0.19298078 109.08918 10.032769