# # 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 = 45.216068 km # Date (UTC) = 2012-12-31T08:45:23.768 # Date (julian) = 2456292.86485843 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6507.0098 5.5652874e+10 0.074134875 0.034396988 -14.477902 46.458802 6509.0422 5.1843789e+10 0.083451518 0.035009851 -14.559424 46.370191 6511.0746 4.8353490e+10 0.093063774 0.035622714 -14.640945 46.281581 6513.1070 4.5050066e+10 0.10295822 0.036235577 -14.729026 46.185841 6515.1394 4.1595530e+10 0.11300395 0.036848440 -14.820739 46.086154 6517.1717 3.8062403e+10 0.12316596 0.037461304 -14.911068 45.987970 6519.2041 3.4908173e+10 0.13360254 0.038074167 -14.992589 45.899359 6521.2365 3.2274371e+10 0.14440295 0.038687030 -15.074111 45.810749 6523.2689 3.0152307e+10 0.15202021 0.039245766 -15.154518 45.721025 6525.3013 2.8297471e+10 0.15788688 0.039747825 -15.232495 45.628871 6527.3337 2.6602412e+10 0.16281990 0.040958754 -15.310472 45.536717 6529.3661 2.4932798e+10 0.16643065 0.042818971 -15.393256 45.440848 6531.3985 2.3087461e+10 0.16954365 0.045808712 -15.480981 45.341160 6533.4309 2.1236197e+10 0.17231344 0.047702708 -15.568706 45.241472 6535.4633 1.9561339e+10 0.17328514 0.048023320 -15.646837 45.152687 6537.4957 1.8216591e+10 0.17451666 0.048918923 -15.724824 45.064065 6539.5281 1.7052574e+10 0.17491173 0.050282863 -15.803756 44.973625 6541.5605 1.5845852e+10 0.17386341 0.051144770 -15.887494 44.873937 6543.5929 1.4616694e+10 0.17239408 0.051537496 -15.971232 44.774249 6545.6253 1.3448562e+10 0.17072990 0.052461169 -16.051188 44.679506 6547.6577 1.2491910e+10 0.16931008 0.053537462 -16.129165 44.587351 6549.6901 1.1671633e+10 0.16763233 0.054669505 -16.207141 44.495196 6551.7225 1.0880511e+10 0.16594094 0.055489344 -16.289930 44.396749 6553.7548 1.0059918e+10 0.16390793 0.054955615 -16.373668 44.297061 6555.7872 9.2701039e+09 0.16203942 0.054191892 -16.454361 44.200999 6557.8196 8.6126054e+09 0.16045892 0.053352356 -16.528793 44.112389 6559.8520 8.0797522e+09 0.15824648 0.052291011 -16.603225 44.023779 6561.8844 7.6049410e+09 0.15562378 0.050936855 -16.680354 43.927539 6563.9168 7.1128270e+09 0.15284029 0.048867815 -16.760117 43.823848 6565.9492 6.6260479e+09 0.15079791 0.047240550 -16.839864 43.720201 6567.9816 6.1945132e+09 0.14943430 0.045787211 -16.914320 43.631525 6570.0140 5.8446617e+09 0.14787630 0.044911707 -16.988752 43.542915 6572.0464 5.5467238e+09 0.14580427 0.044203583 -17.064126 43.452343 6574.0788 5.2352510e+09 0.14309231 0.042817161 -17.143877 43.352654 6576.1112 4.9093671e+09 0.14069498 0.041243413 -17.223628 43.252966 6578.1436 4.5984426e+09 0.13806755 0.038422879 -17.297447 43.158320 6580.1760 4.3390555e+09 0.13514174 0.036358123 -17.368335 43.066165 6582.2084 4.1168879e+09 0.13212916 0.035237091 -17.439223 42.974010 6584.2408 3.8986174e+09 0.12899109 0.034384356 -17.514245 42.875467 6586.2732 3.6559147e+09 0.12596555 0.033167765 -17.590007 42.775779 6588.3056 3.4142412e+09 0.12346548 0.033277889 -17.664115 42.679855 6590.3380 3.2106751e+09 0.12057959 0.030433425 -17.735013 42.591233 6592.3703 3.0477080e+09 0.11787137 0.027713807 -17.805910 42.502611 6594.4027 2.9006268e+09 0.11548893 0.025951438 -17.879334 42.406174 6596.4351 2.7371012e+09 0.11299111 0.025725295 -17.955097 42.302499 6598.4675 2.5722009e+09 0.11130219 0.025183950 -18.030748 42.199025 6600.4999 2.4143813e+09 0.11101135 0.026017627 -18.098108 42.110385 6602.5323 2.2931535e+09 0.11017982 0.027062373 -18.165451 42.021775 6604.5647 2.1893437e+09 0.10892378 0.026406585 -18.234394 41.931060 6606.5971 2.0760478e+09 0.10799553 0.026430979 -18.310157 41.831372 6608.6295 1.9602973e+09 0.10527730 0.023715727 -18.385920 41.731684 6610.6619 1.8439180e+09 0.10238977 0.024635407 -18.455940 41.637135 6612.6943 1.7528728e+09 0.10079254 0.023802003 -18.523284 41.544979 6614.7267 1.6825622e+09 0.099346725 0.023439834 -18.590628 41.452824 6616.7591 1.6059113e+09 0.097630109 0.023401437 -18.661787 41.354184 6618.7915 1.5173578e+09 0.096717118 0.024368454 -18.733562 41.254496 6620.8239 1.4313319e+09 0.095727869 0.025032689 -18.803776 41.158715 6622.8563 1.3618950e+09 0.094013854 0.024530083 -18.871128 41.070093 6624.8887 1.3042373e+09 0.092157231 0.025338005 -18.938481 40.981471 6626.9211 1.2503584e+09 0.089713775 0.025417394 -19.008186 40.886961 6628.9534 1.1890569e+09 0.088228713 0.026090205 -19.079962 40.787273 6630.9858 1.1251150e+09 0.086187870 0.025930731 -19.151544 40.687768 6633.0182 1.0717925e+09 0.084558863 0.026155437 -19.215343 40.595614 6635.0506 1.0264207e+09 0.082881820 0.026407381 -19.279143 40.503460 6637.0830 9.8457236e+08 0.081369064 0.026120747 -19.344560 40.409778 6639.1154 9.3910784e+08 0.080581197 0.025586820 -19.416336 40.310089 6641.1478 8.8607043e+08 0.081474973 0.025148802 -19.488112 40.210401 6643.1802 8.4105131e+08 0.081200042 0.025219828 -19.551880 40.118412 6645.2126 8.0700478e+08 0.080383383 0.025551282 -19.612135 40.029802 6647.2450 7.7645706e+08 0.079372166 0.026566774 -19.672390 39.941192 6649.2774 7.4555604e+08 0.078398548 0.027251312 -19.742719 39.839406 6651.3098 7.0727667e+08 0.078146257 0.026721575 -19.814505 39.735714 6653.3422 6.6862264e+08 0.077833177 0.027700369 -19.884827 39.633488 6655.3746 6.3286661e+08 0.076581303 0.027764993 -19.952615 39.533801 6657.4070 5.9826824e+08 0.075031291 0.029373188 -20.020403 39.434113 6659.4394 5.6797527e+08 0.073669942 0.031742946 -20.081724 39.343934 6661.4718 5.4562052e+08 0.072345121 0.032775229 -20.141979 39.255324 6663.5042 5.2470627e+08 0.071117537 0.032343498 -20.202513 39.166304 6665.5366 5.0572246e+08 0.070839844 0.027667971 -20.270301 39.066615 6667.5689 4.8525427e+08 0.070242307 0.027312442 -20.338090 38.966927 6669.6013 4.6002828e+08 0.069399817 0.027738083 -20.405878 38.865128 6671.6337 4.3292849e+08 0.069312801 0.026874380 -20.473665 38.761454 6673.6661 4.0466035e+08 0.068726705 0.028455465 -20.541212 38.658106 6675.6985 3.8252434e+08 0.066759356 0.031136289 -20.597926 38.569491 6677.7309 3.6825690e+08 0.065423789 0.031319139 -20.654637 38.480881 6679.7633 3.5620741e+08 0.065383174 0.029637003 -20.713563 38.390055 6681.7957 3.4295672e+08 0.066232147 0.030267814 -20.781351 38.290367 6683.8281 3.2449992e+08 0.066712810 0.032402176 -20.849139 38.190679 6685.8605 3.0754339e+08 0.066514292 0.033613736 -20.914173 38.090981 6687.8929 2.9337937e+08 0.064525882 0.033844925 -20.977983 37.991277 6689.9253 2.7807914e+08 0.062820105 0.033183117 -21.041792 37.891577 6691.9577 2.6687589e+08 0.062002663 0.032775313 -21.105592 37.791889 6693.9901 2.5056286e+08 0.061322646 0.031264431 -21.169392 37.692201 6696.0225 2.3753863e+08 0.061471846 0.029685122 -21.228392 37.597613 6698.0549 2.2712705e+08 0.060886208 0.030293127 -21.285103 37.505460 6700.0873 2.1830006e+08 0.059538885 0.030732442 -21.341813 37.413306 6702.1197 2.1014342e+08 0.058199940 0.032972275 -21.404590 37.314706 6704.1520 1.9741039e+08 0.058752205 0.036252218 -21.468390 37.215018 6706.1844 1.8742742e+08 0.058899251 0.038767415 -21.530803 37.115329 6708.2168 1.7868675e+08 0.058723929 0.040279708 -21.590616 37.015641 6710.2492 1.7157349e+08 0.057673113 0.040545279 -21.650429 36.915952 6712.2816 1.6247209e+08 0.055879169 0.042352848 -21.713592 36.816264 6714.3140 1.5361360e+08 0.054097817 0.047327017 -21.777392 36.716577 6716.3464 1.4722386e+08 0.052580381 0.048911601 -21.839867 36.616889 6718.3788 1.4263533e+08 0.050659923 0.050402385 -21.899680 36.517201 6720.4112 1.3717239e+08 0.050346723 0.050372121 -21.959493 36.417513 6722.4436 1.2932265e+08 0.050190232 0.050056798 -22.019313 36.317813 6724.4760 1.2150371e+08 0.047445544 0.045951792 -22.079135 36.218110 6726.5084 1.1457960e+08 0.044988516 0.040955953 -22.140218 36.117148 6728.5408 1.1100819e+08 0.044802201 0.040394569 -22.204019 36.013472 6730.5732 1.0865060e+08 0.043538848 0.041164802 -22.267819 35.909795 6732.6056 1.0824828e+08 0.042441268 0.043851693 -22.328393 35.809345 6734.6380 1.0641327e+08 0.042352015 0.049315215 -22.388206 35.709657 6736.6704 1.0146588e+08 0.044262262 0.052889354 -22.446818 35.609968 6738.7028 96332175. 0.045404878 0.061190097 -22.502643 35.510281 6740.7352 92073918. 0.044848662 0.065306244 -22.558468 35.410593 6742.7675 88984978. 0.042046460 0.070481025 -22.617456 35.310905 6744.7999 87380088. 0.038745593 0.078412147 -22.677269 35.211217 6746.8323 83555648. 0.034985026 0.069310438 -22.737082 35.111529 6748.8647 76155554. 0.034862419 0.071566278 -22.796895 35.011841 6750.8971 75211186. 0.032237835 0.073536009 -22.856708 34.912153 6752.9295 75791859. 0.029663538 0.073058848 -22.913420 34.812465 6754.9619 72698260. 0.028299792 0.074666592 -22.969245 34.712777 6756.9943 70266474. 0.025942974 0.076725413 -23.025070 34.613089 6759.0267 65301775. 0.027387277 0.075826398 -23.080895 34.513401 6761.0591 63535109. 0.028202182 0.077973108 -23.136721 34.413712 6763.0915 64748352. 0.033519744 0.076716408 -23.195585 34.314024 6765.1239 64121317. 0.036171657 0.079553809 -23.255397 34.214336 6767.1563 60061287. 0.036453384 0.081800770 -23.316224 34.111026 6769.1887 55805393. 0.033123835 0.084911886 -23.380027 33.997095 6771.2211 52066762. 0.031532654 0.089841336 -23.443351 33.884017 6773.2535 46319793. 0.039763166 0.094770786 -23.499184 33.784314 6775.2859 46086068. 0.027167173 0.099700237 -23.555017 33.684611 6777.3183 46379862. 0.0041628229 0.10462969 -23.610846 33.584917