# # 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 = 50.911517 km # Date (UTC) = 2015-12-10T09:31:01.564 # Date (julian) = 2457366.89654588 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6498.4353 5.8357075e+10 0.037545484 0.031811390 113.87701 26.342591 6500.8980 5.4640666e+10 0.046712902 0.032553999 113.93186 26.223322 6503.3607 5.0649373e+10 0.056153123 0.033296608 113.98340 26.107347 6505.8233 4.6918143e+10 0.066004162 0.034039218 114.03495 25.991373 6508.2860 4.3622218e+10 0.076402786 0.034781827 114.09036 25.871539 6510.7487 4.0653992e+10 0.087420654 0.035524436 114.14619 25.751286 6513.2113 3.7613147e+10 0.098962014 0.036267046 114.20325 25.625181 6515.6740 3.4368906e+10 0.11094176 0.037009655 114.26123 25.494725 6518.1366 3.1124597e+10 0.12338377 0.037752264 114.31813 25.369410 6520.5993 2.8126489e+10 0.13639381 0.038494873 114.37396 25.249156 6523.0620 2.5654044e+10 0.14718884 0.039194470 114.42904 25.129655 6525.5246 2.3468302e+10 0.15410566 0.039722341 114.48058 25.013696 6527.9873 2.1487267e+10 0.16056157 0.041433254 114.53212 24.897737 6530.4499 1.9658302e+10 0.16588813 0.044458617 114.58366 24.781765 6532.9126 1.7961487e+10 0.17074318 0.047446583 114.63521 24.665792 6535.3753 1.6418487e+10 0.17313927 0.048061505 114.68675 24.547597 6537.8379 1.4986877e+10 0.17510555 0.049080275 114.73828 24.427343 6540.3006 1.3687356e+10 0.17585892 0.050996112 114.78982 24.307908 6542.7633 1.2505580e+10 0.17412956 0.051292014 114.84136 24.191949 6545.2259 1.1448476e+10 0.17219445 0.052457591 114.89289 24.075989 6547.6886 1.0520057e+10 0.16963709 0.053549221 114.94443 23.960031 6550.1512 9.6649101e+09 0.16753173 0.055023230 114.99597 23.844073 6552.6139 8.8983918e+09 0.16522587 0.055432246 115.04751 23.725814 6555.0766 8.2083097e+09 0.16291578 0.054789026 115.09905 23.605544 6557.5392 7.5915240e+09 0.16023184 0.053528113 115.15060 23.486160 6560.0019 7.0476491e+09 0.15749154 0.052272599 115.20213 23.370201 6562.4646 6.5447163e+09 0.15425987 0.050437858 115.25367 23.254242 6564.9272 6.1032707e+09 0.15152689 0.048351380 115.30521 23.138283 6567.3899 5.7156265e+09 0.14905093 0.046287531 115.35674 23.022324 6569.8525 5.3234058e+09 0.14718145 0.044907912 115.40916 22.898410 6572.3152 4.9169941e+09 0.14520905 0.044049644 115.46231 22.767955 6574.7779 4.5315798e+09 0.14282081 0.042481396 115.51469 22.644437 6577.2405 4.1943568e+09 0.14010743 0.039842553 115.56624 22.528463 6579.7032 3.9235922e+09 0.13696676 0.036683920 115.61713 22.412490 6582.1659 3.6904445e+09 0.13408638 0.035248660 115.66438 22.296531 6584.6285 3.4691128e+09 0.13126776 0.034173132 115.71162 22.180573 6587.0912 3.2613810e+09 0.12847521 0.033178572 115.76239 22.064613 6589.5538 3.0749974e+09 0.12546266 0.031947200 115.81393 21.948654 6592.0165 2.8975167e+09 0.12180918 0.028057493 115.86334 21.832696 6594.4792 2.7312236e+09 0.11802967 0.025909483 115.91059 21.716737 6596.9418 2.5754289e+09 0.11419587 0.025722992 115.95783 21.600777 6599.4045 2.4305697e+09 0.11190558 0.024954058 116.00508 21.484802 6601.8672 2.2899559e+09 0.11156830 0.027454071 116.05233 21.368827 6604.3298 2.1664446e+09 0.11040839 0.026267112 116.10317 21.252866 6606.7925 2.0527666e+09 0.10979533 0.026079900 116.15471 21.136907 6609.2551 1.9379359e+09 0.10677611 0.023781721 116.20707 21.013565 6611.7178 1.8222377e+09 0.10419917 0.024500708 116.26022 20.883109 6614.1805 1.7010942e+09 0.10343184 0.023816157 116.31077 20.759026 6616.6431 1.5944863e+09 0.10217164 0.023383238 116.35801 20.643068 6619.1058 1.5030967e+09 0.10161546 0.024551440 116.40525 20.527110 6621.5685 1.4246708e+09 0.10074679 0.024901030 116.45250 20.411150 6624.0311 1.3522837e+09 0.098765578 0.024878967 116.49974 20.295191 6626.4938 1.2846900e+09 0.097220643 0.025961783 116.54699 20.179220 6628.9564 1.2221384e+09 0.095599448 0.026091420 116.59424 20.063246 6631.4191 1.1561043e+09 0.093700017 0.025973338 116.64197 19.942884 6633.8818 1.0944479e+09 0.091980029 0.026306200 116.69029 19.817260 6636.3444 1.0305154e+09 0.090270921 0.026415997 116.73819 19.695357 6638.8071 9.6815002e+08 0.088950094 0.025636480 116.78543 19.579397 6641.2698 9.1286556e+08 0.089357544 0.025149216 116.83268 19.463438 6643.7324 8.6156175e+08 0.088313677 0.025303204 116.87992 19.347480 6646.1951 8.1983503e+08 0.086862293 0.026021126 116.92716 19.231522 6648.6577 7.8303639e+08 0.085227600 0.027404578 116.97441 19.118679 6651.1204 7.4960747e+08 0.084323253 0.026576437 117.02166 19.007001 6653.5831 7.2083594e+08 0.083517387 0.027823354 117.06933 18.887810 6656.0457 6.8447827e+08 0.081662881 0.028063553 117.11765 18.757354 6658.5084 6.4782236e+08 0.080165625 0.030962719 117.16561 18.631688 6660.9711 6.1385169e+08 0.078812774 0.032508637 117.21285 18.515729 6663.4337 5.8581528e+08 0.077563489 0.032363020 117.26010 18.399750 6665.8964 5.5623192e+08 0.077459568 0.027078385 117.30841 18.274126 6668.3590 5.2373948e+08 0.076737815 0.027788499 117.35673 18.148501 6670.8217 4.9328511e+08 0.076626850 0.026947951 117.40405 18.031889 6673.2844 4.6660375e+08 0.076308899 0.027884504 117.45129 17.915931 6675.7470 4.4751488e+08 0.074181920 0.031229186 117.49594 17.802557 6678.2097 4.3070076e+08 0.072905945 0.030796365 117.53889 17.690878 6680.6724 4.1447227e+08 0.073463218 0.029586605 117.58333 17.574020 6683.1350 3.9413233e+08 0.074254079 0.031386444 117.63164 17.443564 6685.5977 3.7304567e+08 0.073964983 0.033336130 117.67885 17.316982 6688.0603 3.5717651e+08 0.071457287 0.033799118 117.72180 17.205317 6690.5230 3.4061161e+08 0.069490894 0.033055927 117.76475 17.093653 6692.9857 3.2631337e+08 0.068526591 0.031620738 117.81665 16.969735 6695.4483 3.1118233e+08 0.067921826 0.029777122 117.86980 16.844111 6697.9110 2.9583680e+08 0.067154550 0.030206552 117.91470 16.726297 6700.3736 2.8559681e+08 0.065203110 0.030944865 117.95765 16.610338 6702.8363 2.7687771e+08 0.064146065 0.033544529 118.00318 16.489744 6705.2990 2.6592326e+08 0.064255368 0.037200122 118.05149 16.364121 6707.7616 2.5263214e+08 0.063914806 0.040077723 118.09981 16.238497 6710.2243 2.3985361e+08 0.062703579 0.040540398 118.14813 16.112872 6712.6870 2.2514660e+08 0.060553560 0.043105416 118.19462 15.990531 6715.1496 2.1404869e+08 0.058432803 0.047531619 118.23757 15.874557 6717.6123 2.0645320e+08 0.056126609 0.049836396 118.28059 15.758465 6720.0749 1.9124729e+08 0.054850892 0.050411082 118.32891 15.632841 6722.5376 1.7608166e+08 0.054631148 0.049940578 118.37722 15.507216 6725.0003 1.6629252e+08 0.050166673 0.041575850 118.42048 15.394750 6727.4629 1.5695252e+08 0.048572352 0.040343624 118.46343 15.283086 6729.9256 1.5299728e+08 0.047236380 0.040428493 118.50968 15.162849 6732.3883 1.4584857e+08 0.045294874 0.043811686 118.55799 15.037225 6734.8509 1.3709142e+08 0.044868237 0.049302402 118.60368 14.911601 6737.3136 1.2943156e+08 0.046449665 0.055134496 118.64716 14.785976 6739.7762 1.2485239e+08 0.046358431 0.063776530 118.69294 14.660352 6742.2389 1.2039108e+08 0.043370508 0.069192897 118.74126 14.534728 6744.7016 1.1467272e+08 0.038435283 0.078336059 118.78958 14.409096 6747.1642 1.0665742e+08 0.033196103 0.067304622 118.83790 14.283453 6749.6269 98645127. 0.031208216 0.072106288 118.88298 14.162504 6752.0896 95409934. 0.026996916 0.074030841 118.92163 14.050840 6754.5522 94814503. 0.025043084 0.075325431 118.96036 13.939073 6757.0149 95291697. 0.021588433 0.076694891 119.00867 13.813449 6759.4775 90978593. 0.022156932 0.075935194 119.05699 13.687824 6761.9402 84532335. 0.024981142 0.078045904 119.10531 13.562200 6764.4029 79562636. 0.027819377 0.079502586 119.15363 13.436576 6766.8655 73908110. 0.027634374 0.081671597 119.19775 13.310952 6769.3282 71755084. 0.021839775 0.085250277 119.24123 13.185328 6771.7909 67233567. 0.016498068 0.091223316 119.28857 13.059704 6774.2535 63250239. 0.011024827 0.097196355 119.33689 12.934079 6776.7162 62334636. 0.0057810110 0.10316939 119.38169 12.808455 6779.1788 63187295. 0.00054869248 0.10914243 119.42518 12.682831 6781.6415 63682268. -0.0052341792 0.11511547 119.47276 12.545377 6784.1042 62605149. -0.012414981 0.12108851 119.52245 12.401803 6786.5668 58594968. -0.024206134 0.12706155 119.57098 12.277551 6789.0295 54985836. -0.070834691 0.13303459 119.61929 12.156759 6791.4922 52482496. -0.041267694 0.13900763 119.66386 12.032191 6793.9548 48223956. 0.035309997 0.14498067 119.70735 11.906548