# # 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 = 53.601478 km # Date (UTC) = 2012-01-13T09:49:44.036 # Date (julian) = 2455939.90953746 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6504.0372 1.0152659e+11 0.064782190 0.033500611 103.05541 43.843697 6506.3386 8.9119053e+10 0.074945975 0.034194606 103.15082 43.714891 6508.6401 7.7525756e+10 0.085220555 0.034888602 103.25403 43.575556 6510.9415 6.7560892e+10 0.095722319 0.035582597 103.35134 43.446262 6513.2430 5.9410466e+10 0.10658371 0.036276593 103.44165 43.328862 6515.5444 5.2600805e+10 0.11781004 0.036970588 103.53384 43.206130 6517.8459 4.6684075e+10 0.12935346 0.037664584 103.63189 43.066794 6520.1473 4.1245083e+10 0.14112540 0.038358579 103.72620 42.932772 6522.4488 3.6571794e+10 0.15199660 0.039034765 103.81200 42.810838 6524.7502 3.2940217e+10 0.15860755 0.039693477 103.89781 42.688905 6527.0517 3.0087827e+10 0.16400892 0.040753975 103.98360 42.566989 6529.3531 2.7564896e+10 0.16789094 0.042798254 104.06939 42.445073 6531.6546 2.5052068e+10 0.17172408 0.046181393 104.16593 42.307891 6533.9560 2.2657471e+10 0.17388703 0.047925860 104.26398 42.168556 6536.2575 2.0588382e+10 0.17439731 0.048020850 104.34628 42.045570 6538.5589 1.8933290e+10 0.17571656 0.049428836 104.42756 41.923654 6540.8603 1.7464854e+10 0.17534254 0.051260553 104.52098 41.789127 6543.1618 1.6050489e+10 0.17381381 0.051424357 104.61903 41.649791 6545.4632 1.4673218e+10 0.17169377 0.052459717 104.70390 41.524151 6547.7647 1.3448875e+10 0.16947680 0.053578162 104.78518 41.402235 6550.0661 1.2474943e+10 0.16742347 0.055001920 104.86645 41.282900 6552.3676 1.1612758e+10 0.16514906 0.055494245 104.94773 41.165500 6554.6690 1.0767439e+10 0.16271844 0.054846420 105.03131 41.040272 6556.9705 9.9468520e+09 0.16036637 0.053870447 105.11904 40.900936 6559.2719 9.1625057e+09 0.15747620 0.052356488 105.20406 40.768902 6561.5734 8.4704841e+09 0.15467482 0.051090133 105.28534 40.646986 6563.8748 7.9215911e+09 0.15164479 0.048916394 105.36569 40.525070 6566.1763 7.4690602e+09 0.14920223 0.047083166 105.44246 40.403154 6568.4777 7.0309800e+09 0.14731540 0.045332522 105.51922 40.281238 6570.7792 6.5672510e+09 0.14556594 0.044594750 105.60684 40.142080 6573.0806 6.0919851e+09 0.14368031 0.043592788 105.69400 40.003651 6575.3821 5.6540486e+09 0.14134835 0.041991376 105.77076 39.881737 6577.6835 5.2863157e+09 0.13869211 0.039146738 105.84752 39.759822 6579.9850 4.9976654e+09 0.13579655 0.036529020 105.92428 39.637907 6582.2864 4.7414868e+09 0.13287648 0.035215855 106.00104 39.515991 6584.5879 4.4577990e+09 0.13018531 0.034195283 106.08463 39.386440 6586.8893 4.1770806e+09 0.12757912 0.033159800 106.17236 39.252263 6589.1908 3.8869955e+09 0.12495661 0.032667540 106.24949 39.126486 6591.4922 3.6367521e+09 0.12167771 0.028646518 106.32174 39.004570 6593.7936 3.4444567e+09 0.11825971 0.026364368 106.39399 38.882645 6596.0951 3.2679132e+09 0.11445576 0.025726842 106.46624 38.760711 6598.3965 3.0992000e+09 0.11191691 0.025217841 106.54246 38.634322 6600.6980 2.9116127e+09 0.11140471 0.026424819 106.63019 38.494988 6602.9994 2.7212274e+09 0.11076065 0.026663751 106.71300 38.361198 6605.3009 2.5452954e+09 0.11031570 0.026917465 106.78524 38.239282 6607.6023 2.3943557e+09 0.10884326 0.024517608 106.85702 38.117834 6609.9038 2.2707285e+09 0.10596841 0.023974398 106.92475 38.000433 6612.2052 2.1596434e+09 0.10375282 0.024167410 106.99248 37.883031 6614.5067 2.0686186e+09 0.10275622 0.023591410 107.06423 37.761617 6616.8081 1.9797288e+09 0.10134393 0.023409135 107.13648 37.639701 6619.1096 1.8813205e+09 0.10070291 0.024552353 107.21568 37.506039 6621.4110 1.7756253e+09 0.099907558 0.024953211 107.29825 37.366706 6623.7125 1.6661636e+09 0.098223095 0.024755785 107.36989 37.240202 6626.0139 1.5771374e+09 0.097003627 0.026573169 107.43762 37.118286 6628.3154 1.5037188e+09 0.095150334 0.025831137 107.50535 36.998726 6630.6168 1.4391362e+09 0.093363356 0.025929822 107.57308 36.881325 6632.9183 1.3728654e+09 0.091723830 0.026142452 107.64379 36.757183 6635.2197 1.2981394e+09 0.090049038 0.026432737 107.72119 36.617848 6637.5212 1.2257897e+09 0.088503807 0.025906164 107.79502 36.484949 6639.8226 1.1569300e+09 0.087961686 0.025334056 107.86276 36.363033 6642.1241 1.0978972e+09 0.087886944 0.025156773 107.93049 36.241816 6644.4255 1.0473314e+09 0.086511861 0.025389594 107.99822 36.124416 6646.7270 1.0000644e+09 0.085093637 0.026296441 108.06595 36.007017 6649.0284 9.4686101e+08 0.083736185 0.027594542 108.13793 35.868992 6651.3298 8.9404199e+08 0.083500853 0.026736945 108.21016 35.729711 6653.6313 8.4106822e+08 0.083216396 0.027847978 108.27790 35.607784 6655.9327 7.9639812e+08 0.081715871 0.027995627 108.34563 35.485868 6658.2342 7.6205774e+08 0.080331733 0.030476420 108.40980 35.367510 6660.5356 7.2660362e+08 0.078993470 0.032112866 108.47302 35.250111 6662.8371 6.9805519e+08 0.077760421 0.032574617 108.53883 35.130112 6665.1385 6.7159868e+08 0.077172227 0.028320138 108.60657 35.008177 6667.4400 6.4420215e+08 0.076707751 0.027265070 108.67593 34.879998 6669.7414 6.1467437e+08 0.075952276 0.027594203 108.74818 34.740663 6672.0429 5.8047750e+08 0.075873961 0.026904452 108.81662 34.610564 6674.3443 5.4685770e+08 0.074956543 0.029245252 108.87984 34.493165 6676.6458 5.2313398e+08 0.072613278 0.032129921 108.94305 34.374833 6678.9472 5.0269179e+08 0.071727187 0.030303072 109.00627 34.252917 6681.2487 4.8461026e+08 0.072752925 0.029848133 109.06948 34.131005 6683.5501 4.6342630e+08 0.073177408 0.031994783 109.13654 33.996926 6685.8516 4.3596704e+08 0.072743212 0.033604300 109.20341 33.863413 6688.1530 4.1447578e+08 0.070147442 0.033820511 109.26663 33.741496 6690.4545 3.9673225e+08 0.068250994 0.033063782 109.32984 33.619580 6692.7559 3.8228337e+08 0.067198857 0.031887538 109.39631 33.487374 6695.0574 3.6330499e+08 0.066536001 0.029848938 109.46340 33.353201 6697.3588 3.3979942e+08 0.065934591 0.030136673 109.52700 33.230079 6699.6603 3.1791409e+08 0.064535868 0.030981209 109.59021 33.108163 6701.9617 3.0593465e+08 0.062776568 0.032820533 109.65032 32.989350 6704.2631 2.9939192e+08 0.063248735 0.036306773 109.70902 32.871950 6706.5646 2.9275656e+08 0.063223334 0.039429039 109.77169 32.744190 6708.8660 2.8127202e+08 0.062828158 0.040986669 109.83878 32.604855 6711.1675 2.6630713e+08 0.061233908 0.040882792 109.90138 32.477244 6713.4689 2.5549659e+08 0.059189949 0.045382677 109.96008 32.359842 6715.7704 2.4349642e+08 0.057411062 0.048166518 110.02146 32.235423 6718.0718 2.3366546e+08 0.055364912 0.049924291 110.08855 32.096088 6720.3733 2.2378006e+08 0.054644150 0.050376515 110.15243 31.965135 6722.6747 2.1465693e+08 0.054285145 0.049771061 110.21113 31.847736 6724.9762 2.0746764e+08 0.050153825 0.041774943 110.27124 31.727526 6727.2776 2.0013247e+08 0.048680886 0.040590508 110.33832 31.593352 6729.5791 1.9065962e+08 0.048070501 0.040659460 110.40245 31.461993 6731.8805 1.8319426e+08 0.046338755 0.043502427 110.45663 31.340076 6734.1820 1.7430088e+08 0.045588774 0.049342651 110.51101 31.217975 6736.4834 1.6656530e+08 0.047569847 0.052182597 110.57810 31.083800 6738.7849 1.5820365e+08 0.048711014 0.061642140 110.64419 30.950573 6741.0863 1.5403296e+08 0.047612800 0.066004863 110.69837 30.828658 6743.3878 1.4985523e+08 0.043469799 0.073663270 110.75256 30.706744 6745.6892 1.4593447e+08 0.041118716 0.078856624 110.81787 30.574252 6747.9907 1.4005898e+08 0.037002466 0.067020116 110.88496 30.440078 6750.2921 1.3135121e+08 0.034396938 0.072502913 110.94728 30.305903 6752.5936 1.2735792e+08 0.031642302 0.073447624 111.00920 30.171728 6754.8950 1.2257430e+08 0.030026480 0.074774197 111.06349 30.054111 6757.1964 1.2033394e+08 0.027451846 0.076143886 111.11767 29.936710 6759.4979 1.1608514e+08 0.028488881 0.075940105 111.17784 29.802365 6761.7993 1.1064142e+08 0.031510359 0.078034266 111.23976 29.663030 6764.1008 1.0614473e+08 0.035186158 0.079488114 111.30169 29.528002 6766.4022 98334994. 0.036418747 0.080623623 111.36362 29.393828 6768.7037 93195513. 0.032080639 0.083388063 111.41861 29.274683 6771.0051 88246711. 0.027591124 0.089317598 111.47280 29.157266 6773.3066 83001930. 0.023288335 0.094899621 111.53227 29.028410 6775.6080 80100311. 0.018940870 0.10048164 111.59420 28.894236 6777.9095 74891396. 0.014585800 0.10606367 111.65228 28.760061 6780.2109 76233408. 0.010202832 0.11164569 111.70905 28.625886 6782.5124 74961777. 0.0058312478 0.11722771 111.76997 28.487565 6784.8138 74775794. 0.0014710749 0.12280974 111.83188 28.348252 6787.1153 73137575. -0.0029001545 0.12839176 111.88316 28.227966 6789.4167 69019059. -0.0073313295 0.13397378 111.93284 28.110548 6791.7182 67495464. -0.011723643 0.13955581 111.99054 27.982160 6794.0196 65546028. -0.016159667 0.14513783 112.05247 27.847985 6796.3211 63921509. -0.020633752 0.15071985 112.11070 27.713811 6798.6225 62856086. -0.025177031 0.15630187 112.16746 27.579636 6800.9240 57446301. -0.030193712 0.16188390 112.22423 27.445462 6803.2254 57256635. -0.035273092 0.16746592 112.28099 27.311288 6805.5269 57346992. -0.041765564 0.17304794 112.34210 27.177132 6807.8283 55348715. -0.061076948 0.17862997 112.40401 27.042980 6810.1298 54862152. -0.051947658 0.18421199 112.46127 26.908807 6812.4312 47982889. -0.026870980 0.18979401 112.51804 26.774633