# # 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 = 37.937025 km # Date (UTC) = 2011-01-11T07:38:36.147 # Date (julian) = 2455572.81847392 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6513.8047 6.3108338e+10 0.11790580 0.036445987 -1.1310182 43.127501 6515.9206 5.5201900e+10 0.12813401 0.037084018 -1.2098925 43.015416 6518.0364 4.8825809e+10 0.13856265 0.037722050 -1.2897546 42.904319 6520.1523 4.3560053e+10 0.14919584 0.038360081 -1.3727800 42.796385 6522.2682 3.9100725e+10 0.15928345 0.038987471 -1.4558054 42.688451 6524.3840 3.5320389e+10 0.16449649 0.039563383 -1.5353892 42.577078 6526.4999 3.2015671e+10 0.16851222 0.040192143 -1.6142633 42.464995 6528.6157 2.8904370e+10 0.17196245 0.041930942 -1.6978723 42.346183 6530.7316 2.5833722e+10 0.17450919 0.044852905 -1.7880164 42.218083 6532.8474 2.2980169e+10 0.17720429 0.047392143 -1.8733430 42.094987 6534.9633 2.0497668e+10 0.17807985 0.048214031 -1.9480659 41.982902 6537.0792 1.8498345e+10 0.17783788 0.048722547 -2.0227887 41.870818 6539.1950 1.6871929e+10 0.17728934 0.049879693 -2.1012624 41.762483 6541.3109 1.5409598e+10 0.17622691 0.051225714 -2.1801368 41.654549 6543.4267 1.4098388e+10 0.17472529 0.051493892 -2.2569634 41.544554 6545.5426 1.2926472e+10 0.17292574 0.052460428 -2.3316975 41.432454 6547.6584 1.1875997e+10 0.17101253 0.053537761 -2.4064306 41.320356 6549.7743 1.0974360e+10 0.16842272 0.054755361 -2.4811533 41.208272 6551.8902 1.0160045e+10 0.16549255 0.055548213 -2.5558761 41.096187 6554.0060 9.3620230e+09 0.16199218 0.054832507 -2.6378288 40.976470 6556.1219 8.5635478e+09 0.15919761 0.053995207 -2.7232285 40.853114 6558.2377 7.7985468e+09 0.15706596 0.053036722 -2.8025486 40.736176 6560.3536 7.1319753e+09 0.15432105 0.051955496 -2.8772715 40.624092 6562.4695 6.5704688e+09 0.15149259 0.050433200 -2.9513281 40.512007 6564.5853 6.0908298e+09 0.14864882 0.048506334 -3.0218998 40.399922 6566.7012 5.6548573e+09 0.14623402 0.046786234 -3.0924715 40.287838 6568.8170 5.2633556e+09 0.14393856 0.045020619 -3.1661634 40.178874 6570.9329 4.9051293e+09 0.14206301 0.044531076 -3.2408862 40.070942 6573.0487 4.5749735e+09 0.13993502 0.043618366 -3.3141865 39.961586 6575.1646 4.2809940e+09 0.13731770 0.042209560 -3.3847583 39.849501 6577.2805 4.0028380e+09 0.13433890 0.039779838 -3.4553301 39.737416 6579.3963 3.7158067e+09 0.13107486 0.036852624 -3.5353179 39.610377 6581.5122 3.4285181e+09 0.12826056 0.035441515 -3.6159729 39.482278 6583.6280 3.1597769e+09 0.12560128 0.034703784 -3.6882981 39.370838 6585.7439 2.9348309e+09 0.12273770 0.033376049 -3.7588696 39.262906 6587.8597 2.7499849e+09 0.12017120 0.033348857 -3.8277094 39.153241 6589.9756 2.5825173e+09 0.11702871 0.031110462 -3.8941300 39.041156 6592.0915 2.4195428e+09 0.11337803 0.027984687 -3.9605929 38.929071 6594.2073 2.2683905e+09 0.10980072 0.026058714 -4.0311565 38.816987 6596.3232 2.1299191e+09 0.10580534 0.025725804 -4.1017282 38.704902 6598.4390 2.0026316e+09 0.10278222 0.025197553 -4.1698176 38.595297 6600.5549 1.8874609e+09 0.10158302 0.026130639 -4.2362480 38.487348 6602.6708 1.7786298e+09 0.10042876 0.026944239 -4.3026764 38.378610 6604.7866 1.6808173e+09 0.099488402 0.026538340 -4.3690967 38.266525 6606.9025 1.5867914e+09 0.098499154 0.025882254 -4.4355169 38.154441 6609.0183 1.4842205e+09 0.095639106 0.023711376 -4.5093583 38.029834 6611.1342 1.3776892e+09 0.093022021 0.024872885 -4.5852690 37.901734 6613.2500 1.2781463e+09 0.092254843 0.023665332 -4.6547813 37.787231 6615.3659 1.1927358e+09 0.091076663 0.023262789 -4.7212017 37.679296 6617.4818 1.1219124e+09 0.090099976 0.023598975 -4.7876221 37.570261 6619.5976 1.0553676e+09 0.089483419 0.024670109 -4.8540424 37.458179 6621.7135 9.9494932e+08 0.088433151 0.024852962 -4.9204626 37.346096 6623.8293 9.3791130e+08 0.086618924 0.024799080 -4.9833279 37.237566 6625.9452 8.8842970e+08 0.085459197 0.026525500 -5.0455972 37.129632 6628.0610 8.3970076e+08 0.083690979 0.025727881 -5.1097241 37.019840 6630.1769 7.9023010e+08 0.082232964 0.025928738 -5.1761444 36.907756 6632.2928 7.4383629e+08 0.080499976 0.026067450 -5.2424043 36.795831 6634.4086 6.9939854e+08 0.078963439 0.026356650 -5.3046734 36.687899 6636.5245 6.6105141e+08 0.077345086 0.026346076 -5.3669425 36.579967 6638.6403 6.2420150e+08 0.076136505 0.025643745 -5.4348145 36.459334 6640.7562 5.8638210e+08 0.076396313 0.025178130 -5.5059812 36.331234 6642.8721 5.5162500e+08 0.075911913 0.025187383 -5.5725035 36.211494 6644.9879 5.1525075e+08 0.074839653 0.025450378 -5.6347725 36.099410 6647.1038 4.8433815e+08 0.073657866 0.026492415 -5.6970416 35.987795 6649.2196 4.5585186e+08 0.072725703 0.027330942 -5.7593107 35.879862 6651.3355 4.3203001e+08 0.072646704 0.026741266 -5.8215798 35.771930 6653.4513 4.1167127e+08 0.072471374 0.027756101 -5.8838553 35.661062 6655.5672 3.9222632e+08 0.071257051 0.027844585 -5.9461335 35.548961 6657.6831 3.6994052e+08 0.069968037 0.029693437 -6.0096334 35.433539 6659.7989 3.4706427e+08 0.068838414 0.031667944 -6.0760439 35.310204 6661.9148 3.2586565e+08 0.067649883 0.033000864 -6.1416796 35.189755 6664.0306 3.0195529e+08 0.066592860 0.032094007 -6.2039584 35.081806 6666.1465 2.8963571e+08 0.066837951 0.026937141 -6.2662372 34.973857 6668.2623 2.7764012e+08 0.066118128 0.027702934 -6.3252745 34.862686 6670.3782 2.6191719e+08 0.065883450 0.027153416 -6.3833922 34.750601 6672.4941 2.4830676e+08 0.065677450 0.027165967 -6.4415099 34.640053 6674.6099 2.3164047e+08 0.064599621 0.029469300 -6.4996276 34.532119 6676.7258 2.2095619e+08 0.062436440 0.032181484 -6.5577453 34.424185 6678.8416 2.1095204e+08 0.061710729 0.030373691 -6.6238449 34.296870 6680.9575 1.9633514e+08 0.062689370 0.029648180 -6.6902665 34.168773 6683.0734 1.8538334e+08 0.063275348 0.031296081 -6.7496013 34.057884 6685.1892 1.7424417e+08 0.063028792 0.032904691 -6.8077192 33.949950 6687.3051 1.6453965e+08 0.061148687 0.034172760 -6.8658372 33.842017 6689.4209 1.5675283e+08 0.058645187 0.033637123 -6.9239552 33.734084 6691.5368 1.4912844e+08 0.057660037 0.032874617 -6.9822003 33.625431 6693.6526 1.3980316e+08 0.056755753 0.031380192 -7.0438777 33.497332 6695.7685 1.2854686e+08 0.056557974 0.029718309 -7.1055550 33.369233 6697.8844 1.1868510e+08 0.055920248 0.030203182 -7.1639293 33.259846 6700.0002 1.1007128e+08 0.054522178 0.030667879 -7.2220470 33.151912 6702.1161 1.0816206e+08 0.053099127 0.032969415 -7.2780102 33.041824 6704.2319 1.0630372e+08 0.053624446 0.036291444 -7.3319767 32.929741 6706.3478 1.0285108e+08 0.053689866 0.039051704 -7.3873150 32.816417 6708.4636 98586604. 0.053406085 0.040548473 -7.4537371 32.693060 6710.5795 91148591. 0.052073188 0.040609926 -7.5201044 32.569772 6712.6954 85695026. 0.050180909 0.043121015 -7.5740959 32.461809 6714.8112 80742359. 0.048290006 0.047364396 -7.6280625 32.353876 6716.9271 77761730. 0.046426734 0.049766862 -7.6866054 32.236790 6719.0429 72865767. 0.044130754 0.051329046 -7.7482827 32.113435 6721.1588 66687319. 0.044441808 0.050351744 -7.8062145 31.995554 6723.2747 64175742. 0.043022764 0.049522122 -7.8601808 31.883471 6725.3905 58037943. 0.038247036 0.041332087 -7.9141478 31.771705 6727.5064 57217815. 0.036176455 0.040285759 -7.9681225 31.663755 6729.6222 56155451. 0.032803375 0.040630698 -8.0220971 31.555806 6731.7381 54001010. 0.015016025 0.043218948 -8.0812128 31.437575 6733.8539 57068806. 0.028211683 0.048560606 -8.1428800 31.314240 6735.9698 55201848. 0.056621021 0.050322946 -8.1979117 31.199525