# # 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 = 52.525996 km # Date (UTC) = 2012-12-29T09:14:58.109 # Date (julian) = 2456290.88539479 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6506.3992 6.0416569e+10 0.075863505 0.034212869 115.15487 34.634283 6508.6780 5.5609633e+10 0.086771900 0.034900040 115.21845 34.526980 6510.9568 5.1203602e+10 0.097945898 0.035587211 115.28270 34.417981 6513.2356 4.6567741e+10 0.10922101 0.036274382 115.34977 34.301719 6515.5145 4.2130208e+10 0.12067823 0.036961553 115.41685 34.185456 6517.7933 3.8003720e+10 0.13234100 0.037648724 115.48060 34.077733 6520.0721 3.4574589e+10 0.14434540 0.038335895 115.54419 33.970431 6522.3509 3.1771864e+10 0.15573171 0.039009140 115.60604 33.863129 6524.6297 2.9350199e+10 0.16233830 0.039650673 115.66565 33.755826 6526.9085 2.7108658e+10 0.16768069 0.040620584 115.72527 33.648524 6529.1874 2.4833802e+10 0.17122367 0.042534226 115.79174 33.528873 6531.4662 2.2606343e+10 0.17468408 0.045907198 115.85880 33.408155 6533.7450 2.0452254e+10 0.17695911 0.047836185 115.92077 33.296613 6536.0238 1.8643921e+10 0.17673931 0.047811800 115.98038 33.189311 6538.3026 1.7137055e+10 0.17811801 0.049304041 116.03999 33.082006 6540.5814 1.5830601e+10 0.17769846 0.051128788 116.09962 32.974691 6542.8603 1.4648521e+10 0.17584599 0.051328838 116.15924 32.867376 6545.1391 1.3453327e+10 0.17369835 0.052456813 116.22371 32.754240 6547.4179 1.2258681e+10 0.17080032 0.053446279 116.29077 32.637993 6549.6967 1.1123497e+10 0.16805932 0.054676274 116.35475 32.525459 6551.9755 1.0154946e+10 0.16567084 0.055578173 116.41436 32.418157 6554.2543 9.3844103e+09 0.16285653 0.054837717 116.47397 32.310854 6556.5332 8.7391467e+09 0.16031387 0.053934743 116.53001 32.203552 6558.8120 8.1496027e+09 0.15744402 0.052547409 116.58565 32.096250 6561.0908 7.5781793e+09 0.15428325 0.051327945 116.64395 31.983816 6563.3696 6.9937589e+09 0.15161352 0.049500827 116.70654 31.863099 6565.6484 6.4432577e+09 0.14905088 0.047582114 116.76870 31.744918 6567.9272 5.9684629e+09 0.14715886 0.045833190 116.82832 31.641577 6570.2060 5.5841303e+09 0.14534269 0.044832157 116.88794 31.538235 6572.4849 5.2696748e+09 0.14313991 0.043952487 116.94506 31.432398 6574.7637 4.9913400e+09 0.14052510 0.042488212 117.00069 31.325096 6577.0425 4.7186454e+09 0.13772469 0.040153622 117.05712 31.216776 6579.3213 4.4227400e+09 0.13450303 0.036893858 117.11972 31.100530 6581.6001 4.1255457e+09 0.13184780 0.035414882 117.18231 30.984284 6583.8789 3.8380269e+09 0.12922713 0.034576784 117.23880 30.875883 6586.1578 3.5980203e+09 0.12657820 0.033169257 117.29444 30.768582 6588.4366 3.4003712e+09 0.12420024 0.033234135 117.35008 30.661275 6590.7154 3.2208435e+09 0.12091021 0.029731325 117.40573 30.553958 6592.9942 3.0629672e+09 0.11769605 0.027107846 117.46137 30.446642 6595.2730 2.8986783e+09 0.11407073 0.025651885 117.51911 30.331780 6597.5518 2.7310662e+09 0.11074313 0.025548587 117.57723 30.215535 6599.8307 2.5611455e+09 0.10910037 0.024979690 117.63384 30.104729 6602.1095 2.4128343e+09 0.10839128 0.027423213 117.68948 29.997426 6604.3883 2.2910900e+09 0.10715117 0.026301830 117.74475 29.890490 6606.6671 2.1882299e+09 0.10651903 0.026305196 117.79642 29.787162 6608.9459 2.0914436e+09 0.10361287 0.023707361 117.84808 29.683834 6611.2247 1.9845494e+09 0.10084465 0.024815139 117.90604 29.570494 6613.5036 1.8717186e+09 0.10003083 0.023758345 117.96864 29.449778 6615.7824 1.7561694e+09 0.098741816 0.023275603 118.02753 29.334954 6618.0612 1.6550367e+09 0.098209926 0.023816999 118.07920 29.231612 6620.3400 1.5645309e+09 0.097580044 0.024876763 118.13086 29.128270 6622.6188 1.4860737e+09 0.096237085 0.024593284 118.18253 29.021668 6624.8976 1.4128011e+09 0.094722312 0.025342809 118.23419 28.914366 6627.1765 1.3415828e+09 0.092656443 0.025384971 118.28784 28.804318 6629.4553 1.2689162e+09 0.091520625 0.026026791 118.34596 28.688072 6631.7341 1.1940442e+09 0.089770829 0.026005334 118.40363 28.572735 6634.0129 1.1279747e+09 0.088198465 0.026327784 118.45530 28.469407 6636.2917 1.0740080e+09 0.086576676 0.026436468 118.50696 28.366079 6638.5705 1.0247262e+09 0.085310305 0.025646786 118.56220 28.253116 6640.8493 9.7635572e+08 0.085521707 0.025166733 118.62033 28.132398 6643.1282 9.2673139e+08 0.084912970 0.025211970 118.67640 28.017196 6645.4070 8.7646522e+08 0.083618668 0.025642340 118.72807 27.913856 6647.6858 8.3601297e+08 0.082275484 0.026798855 118.77974 27.810515 6649.9646 7.9380316e+08 0.081402899 0.026304016 118.83300 27.696830 6652.2434 7.5030987e+08 0.080975818 0.027317498 118.88666 27.580585 6654.5222 7.0702435e+08 0.080367127 0.027813744 118.93919 27.469391 6656.8011 6.6829614e+08 0.078732480 0.028726504 118.99085 27.362088 6659.0799 6.3899908e+08 0.077329935 0.031817936 119.04261 27.254352 6661.3587 6.0954442e+08 0.076190249 0.032717640 119.09626 27.138105 6663.6375 5.8134417e+08 0.075028260 0.032306543 119.14991 27.021859 6665.9163 5.5137926e+08 0.075100282 0.027045698 119.20195 26.916101 6668.1951 5.2914188e+08 0.074404619 0.027643462 119.25361 26.812774 6670.4740 5.0840081e+08 0.074073601 0.027109055 119.30587 26.705626 6672.7528 4.8424330e+08 0.073868112 0.027315921 119.35952 26.589380 6675.0316 4.5621079e+08 0.072532542 0.029858865 119.41282 26.473896 6677.3104 4.3469294e+08 0.070550851 0.031916942 119.46051 26.370554 6679.5892 4.1650412e+08 0.070422412 0.029780864 119.50821 26.267213 6681.8680 3.9972709e+08 0.071350324 0.030323304 119.55914 26.154435 6684.1469 3.8528377e+08 0.071562630 0.032661544 119.61279 26.033718 6686.4257 3.6352183e+08 0.070667398 0.034008746 119.66462 25.918331 6688.7045 3.4653884e+08 0.067808081 0.033947810 119.71231 25.815003 6690.9833 3.3037434e+08 0.066569283 0.033003176 119.75999 25.711675 6693.2621 3.1514048e+08 0.065646485 0.031514165 119.81240 25.598138 6695.5409 3.0486181e+08 0.065099396 0.029760110 119.86605 25.481892 6697.8198 2.8984193e+08 0.064365240 0.030195006 119.91970 25.365646 6700.0986 2.7670231e+08 0.062764907 0.030740829 119.97335 25.249401 6702.3774 2.6436131e+08 0.061476772 0.033178073 120.02512 25.137249 6704.6562 2.5454133e+08 0.061932166 0.036499783 120.07281 25.033921 6706.9350 2.4748447e+08 0.061733636 0.040073728 120.12049 24.930593 6709.2138 2.3325629e+08 0.061237620 0.040996535 120.17296 24.816908 6711.4926 2.2349537e+08 0.059389955 0.041252732 120.22663 24.700644 6713.7715 2.1472598e+08 0.057228328 0.046476848 120.27776 24.584390 6716.0503 2.0663204e+08 0.055430986 0.048475420 120.32694 24.468144 6718.3291 1.9905462e+08 0.053173350 0.050324959 120.37759 24.351898 6720.6079 1.8442171e+08 0.052816286 0.050349329 120.43124 24.235652 6722.8867 1.7163472e+08 0.052170790 0.049508975 120.48399 24.120584 6725.1655 1.6604758e+08 0.047844889 0.041472611 120.52770 24.017256 6727.4444 1.5969291e+08 0.046450006 0.040368368 120.57141 23.913929 6729.7232 1.5502868e+08 0.045481505 0.040563411 120.62084 23.803176 6732.0020 1.4736222e+08 0.043638184 0.043740576 120.67449 23.686930 6734.2808 1.3758244e+08 0.042892245 0.049336704 120.72663 23.572196 6736.5596 1.3454467e+08 0.044632980 0.052470709 120.77581 23.460421 6738.8384 1.3166390e+08 0.045495992 0.061937107 120.82500 23.348191 6741.1173 1.3313359e+08 0.044187156 0.066093121 120.87418 23.231945 6743.3961 1.3069267e+08 0.039933916 0.073719355 120.92336 23.115699 6745.6749 1.2795192e+08 0.037497523 0.078850605 120.97255 22.999438 6747.9537 1.2719584e+08 0.033231439 0.067032836 121.02173 22.883175 6750.2325 1.2258618e+08 0.030468456 0.072401176 121.07373 22.766923 6752.5113 1.1712955e+08 0.027635777 0.073542760 121.12738 22.650677 6754.7902 1.0827923e+08 0.025976542 0.074942801 121.17928 22.534431 6757.0690 1.0247449e+08 0.023171310 0.076530743 121.22846 22.418184 6759.3478 99720227. 0.024232426 0.075903882 121.27764 22.302632 6761.6266 96844571. 0.026653754 0.078019995 121.32682 22.190858 6763.9054 92460831. 0.030718262 0.079195243 121.37600 22.079083 6766.1842 85487755. 0.032227678 0.080130495 121.42108 21.963200 6768.4631 81659478. 0.028352166 0.082522200 121.46579 21.846955 6770.7419 77820663. 0.023771470 0.088679060 121.51355 21.730709 6773.0207 75113587. 0.019592503 0.094206191 121.56273 21.614463 6775.2995 72525297. 0.015405611 0.099733322 121.61190 21.500209 6777.5783 67401689. 0.011075456 0.10526045 121.66109 21.388434 6779.8571 65216404. 0.0068383521 0.11078758 121.71027 21.275726 6782.1360 63294841. 0.0025623841 0.11631472 121.75945 21.159480 6784.4148 60440808. -0.0018574684 0.12184185 121.80863 21.043234 6786.6936 57862599. -0.0064076176 0.12736898 121.85347 20.926988 6788.9724 54948194. -0.011241043 0.13289611 121.89818 20.810742 6791.2512 52398204. -0.016484333 0.13842324 121.95134 20.686038 6793.5300 52282044. -0.022172968 0.14395037 122.00755 20.558293 6795.8088 51008087. -0.030372690 0.14947750 122.05829 20.439487 6798.0877 49822229. -0.058705543 0.15500463 122.10748 20.323223 6800.3665 49582062. -0.042162276 0.16053176 122.15424 20.209394 6802.6453 47218826. -0.0021095462 0.16605890 122.19895 20.097619