# # 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 = 54.196971 km # Date (UTC) = 2014-12-24T09:49:00.273 # Date (julian) = 2457015.90903093 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6488.1909 6.9147191e+10 0.028896413 0.028722200 -27.104378 49.841664 6490.8158 6.2873983e+10 0.037094069 0.029513733 -27.231935 49.728280 6493.4407 5.7251527e+10 0.044996240 0.030305265 -27.355534 49.618414 6496.0656 5.3209817e+10 0.052366544 0.031096798 -27.476571 49.508550 6498.6905 4.9119621e+10 0.059530513 0.031888330 -27.595592 49.398685 6501.3154 4.5423422e+10 0.066372233 0.032679862 -27.716335 49.288815 6503.9403 4.1974918e+10 0.072851851 0.033471395 -27.839949 49.178935 6506.5652 3.8387013e+10 0.078905235 0.034262927 -27.962688 49.069057 6509.1901 3.5191912e+10 0.084656260 0.035054460 -28.081709 48.959191 6511.8150 3.2261993e+10 0.090475460 0.035845992 -28.200690 48.849325 6514.4399 2.9960782e+10 0.097142259 0.036637524 -28.315145 48.739461 6517.0648 2.7787526e+10 0.10515342 0.037429057 -28.429588 48.629597 6519.6897 2.5706197e+10 0.11500422 0.038220589 -28.547791 48.515971 6522.3146 2.3745948e+10 0.12631351 0.038999636 -28.666811 48.401528 6524.9395 2.1866444e+10 0.13436109 0.039760728 -28.782924 48.289992 6527.5644 2.0163172e+10 0.14236865 0.041126245 -28.897382 48.180112 6530.1893 1.8593801e+10 0.15199517 0.044093742 -29.009760 48.070239 6532.8142 1.7160232e+10 0.16176260 0.047364390 -29.119626 47.960375 6535.4391 1.5840985e+10 0.16826135 0.048033806 -29.230720 47.849281 6538.0640 1.4554496e+10 0.17222959 0.049187859 -29.345163 47.734839 6540.6889 1.3262508e+10 0.17241151 0.051179571 -29.459222 47.620780 6543.3138 1.2092123e+10 0.16986849 0.051464260 -29.569087 47.510914 6545.9387 1.1081626e+10 0.16702903 0.052463977 -29.678952 47.401048 6548.5636 1.0226989e+10 0.16535668 0.053835968 -29.788830 47.291171 6551.1885 9.4352604e+09 0.16350535 0.055301932 -29.898709 47.181292 6553.8134 8.6969988e+09 0.16171790 0.054926160 -30.005304 47.068149 6556.4383 8.0476555e+09 0.15977071 0.053948681 -30.110592 46.953706 6559.0632 7.4899064e+09 0.15739754 0.052380043 -30.215879 46.841693 6561.6882 6.9769445e+09 0.15503568 0.051033575 -30.321166 46.731827 6564.3131 6.4664840e+09 0.15248805 0.048629721 -30.426453 46.621961 6566.9380 5.9949309e+09 0.15086096 0.046652285 -30.531741 46.512095 6569.5629 5.5810822e+09 0.14932412 0.044889058 -30.637032 46.401486 6572.1878 5.1714137e+09 0.14796902 0.044122629 -30.742333 46.287028 6574.8127 4.7885420e+09 0.14593005 0.042464685 -30.847634 46.172571 6577.4376 4.4338660e+09 0.14348960 0.039533060 -30.952921 46.062603 6580.0625 4.1387684e+09 0.14072361 0.036463022 -31.058209 45.952739 6582.6874 3.9203220e+09 0.13784761 0.035106741 -31.159865 45.842873 6585.3123 3.7027463e+09 0.13492720 0.033721117 -31.260575 45.733008 6587.9372 3.4802594e+09 0.13213538 0.033366012 -31.361285 45.620357 6590.5621 3.2507544e+09 0.12844261 0.030016510 -31.461995 45.505914 6593.1870 3.0419871e+09 0.12480470 0.026928384 -31.562710 45.393406 6595.8119 2.8614253e+09 0.12094041 0.025707766 -31.663433 45.283528 6598.4368 2.7005879e+09 0.11841879 0.025198627 -31.763055 45.172554 6601.0617 2.5653650e+09 0.11818803 0.027074742 -31.859187 45.058111 6603.6866 2.4363400e+09 0.11702758 0.026256813 -31.955985 44.943162 6606.3115 2.2994771e+09 0.11662516 0.026944216 -32.064135 44.819561 6608.9364 2.1559461e+09 0.11369399 0.023707613 -32.170919 44.697000 6611.5613 2.0121097e+09 0.11090048 0.024600512 -32.267051 44.582557 6614.1862 1.8808216e+09 0.10998867 0.023812206 -32.363182 44.468114 6616.8111 1.7693416e+09 0.10856822 0.023409602 -32.459315 44.357925 6619.4360 1.6720617e+09 0.10787901 0.024631116 -32.555449 44.248061 6622.0609 1.5803137e+09 0.10662796 0.024741780 -32.651590 44.134777 6624.6858 1.4975449e+09 0.10461378 0.025229422 -32.747735 44.020318 6627.3107 1.4187824e+09 0.10226732 0.025436835 -32.841307 43.908434 6629.9356 1.3438534e+09 0.10062027 0.025939942 -32.932861 43.798568 6632.5605 1.2802730e+09 0.098248642 0.026099556 -33.024415 43.686982 6635.1854 1.2142720e+09 0.096111771 0.026427595 -33.115968 43.572539 6637.8103 1.1493648e+09 0.094086947 0.025764539 -33.209712 43.456344 6640.4352 1.0767107e+09 0.093538486 0.025217401 -33.312713 43.332744 6643.0601 1.0053059e+09 0.092765708 0.025201698 -33.412859 43.211427 6645.6850 9.4144363e+08 0.090903681 0.025772597 -33.504426 43.096969 6648.3099 8.8827506e+08 0.088919611 0.027171757 -33.595692 42.982812 6650.9348 8.4677262e+08 0.087450089 0.026469248 -33.682668 42.872946 6653.5597 8.0577961e+08 0.086396012 0.027811446 -33.769644 42.763080 6656.1846 7.6845880e+08 0.084219817 0.028185479 -33.856621 42.653215 6658.8095 7.3690024e+08 0.082367300 0.031496827 -33.943599 42.543349 6661.4344 7.0440936e+08 0.080863016 0.032756224 -34.038148 42.420331 6664.0594 6.6935395e+08 0.079378300 0.031988921 -34.135998 42.291580 6666.6843 6.3447810e+08 0.079451294 0.027041931 -34.225641 42.177083 6669.3092 6.0081526e+08 0.078334376 0.028038176 -34.312617 42.067219 6671.9341 5.7526557e+08 0.078264807 0.026878660 -34.399600 41.954736 6674.5590 5.5097281e+08 0.076991484 0.029426313 -34.486590 41.840278 6677.1839 5.2550650e+08 0.074470358 0.032096834 -34.575783 41.722291 6679.8088 4.9955327e+08 0.074376085 0.029599442 -34.668483 41.598690 6682.4337 4.7520899e+08 0.075216792 0.030755884 -34.758641 41.479157 6685.0586 4.5228552e+08 0.075097700 0.032766705 -34.845616 41.364715 6687.6835 4.3298755e+08 0.072614358 0.033961719 -34.931403 41.251461 6690.3084 4.1475539e+08 0.070085685 0.033080523 -35.013803 41.141597 6692.9333 3.9445068e+08 0.068848188 0.031681566 -35.096977 41.030311 6695.5582 3.7464817e+08 0.068023283 0.029756942 -35.189677 40.901560 6698.1831 3.5309658e+08 0.066927018 0.030469123 -35.281004 40.775330 6700.8080 3.3344405e+08 0.064618899 0.031267026 -35.363414 40.665449 6703.4329 3.1962126e+08 0.063939227 0.034758466 -35.445823 40.555569 6706.0578 3.0346021e+08 0.063734647 0.038546989 -35.533112 40.427776 6708.6827 2.8976047e+08 0.062933582 0.040787010 -35.620572 40.299198 6711.3076 2.7301527e+08 0.060822924 0.041042196 -35.698410 40.189304 6713.9325 2.5620028e+08 0.058245682 0.047059280 -35.776232 40.079439 6716.5574 2.4316316e+08 0.056178901 0.049222365 -35.866300 39.954030 6719.1823 2.3060261e+08 0.053695523 0.051196634 -35.959000 39.825280 6721.8072 2.2038911e+08 0.054128923 0.050547115 -36.038586 39.713173 6724.4321 2.1077150e+08 0.051004079 0.046318252 -36.116407 39.603308 6727.0570 2.0387927e+08 0.047849281 0.040884427 -36.201017 39.483859 6729.6819 1.9503686e+08 0.047059958 0.040590913 -36.288581 39.360242 6732.3068 1.8594389e+08 0.045174302 0.043796694 -36.372245 39.232747 6734.9317 1.7519758e+08 0.045079905 0.049297540 -36.454645 39.103996 6737.5566 1.6614752e+08 0.047056449 0.055908707 -36.533319 38.990611 6740.1815 1.5849077e+08 0.047020322 0.064360470 -36.611139 38.880745 6742.8064 1.5510105e+08 0.043450329 0.070575769 -36.691841 38.758998 6745.4313 1.4783494e+08 0.039796917 0.078748215 -36.774241 38.630248 6748.0562 1.4117422e+08 0.035564704 0.067312753 -36.860181 38.505038 6750.6811 1.3732290e+08 0.032712740 0.073167201 -36.947732 38.381437 6753.3060 1.2870012e+08 0.029721813 0.073967691 -37.031443 38.257837 6755.9309 1.2298452e+08 0.027011717 0.074197186 -37.113843 38.134238 6758.5558 1.1588574e+08 0.026528021 0.074880731 -37.188882 38.017999 6761.1807 1.0709335e+08 0.027630611 0.077983158 -37.262125 37.903556 6763.8057 1.0284629e+08 0.033198401 0.078891390 -37.341048 37.783429 6766.4306 99244899. 0.034769438 0.080687666 -37.423461 37.659809 6769.0555 94279319. 0.029732610 0.084588765 -37.502372 37.532712 6771.6804 93273852. 0.025061486 0.090955308 -37.579621 37.403961 6774.3053 89623832. 0.020436002 0.097321850 -37.660662 37.279004 6776.9302 83664728. 0.015832634 0.10368839 -37.743062 37.155405 6779.5551 78926508. 0.011233699 0.11005494 -37.821372 37.031803 6782.1800 74688525. 0.0066335124 0.11642148 -37.898623 36.908202 6784.8049 71640432. 0.0020364227 0.12278802 -37.980265 36.780210 6787.4298 69651926. -0.0025620442 0.12915456 -38.062665 36.651460 6790.0547 68336155. -0.0071722772 0.13552111 -38.140374 36.527402 6792.6796 66603797. -0.011803012 0.14188765 -38.217625 36.403803 6795.3045 64859436. -0.016461804 0.14825419 -38.294874 36.280202 6797.9294 62165403. -0.021181338 0.15462074 -38.372123 36.156601 6800.5543 56925171. -0.026032348 0.16098728 -38.449374 36.033000 6803.1792 53558602. -0.031052186 0.16735382 -38.527067 35.907380 6805.8041 50777884. -0.036903848 0.17372036 -38.609469 35.760233 6808.4290 47098607. -0.048895507 0.18008691 -38.689878 35.622194 6811.0539 46231913. -0.047490737 0.18645345 -38.767129 35.498595 6813.6788 45584509. -0.038902782 0.19281999 -38.842092 35.374986