# # 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 = 58.703373 km # Date (UTC) = 2015-01-24T10:04:33.321 # Date (julian) = 2457046.91983010 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6500.7271 6.3916547e+10 0.048250222 0.032502453 101.62738 45.887671 6503.2854 5.7879836e+10 0.058241189 0.033273907 101.76017 45.700273 6505.8437 5.2339555e+10 0.068524141 0.034045361 101.88734 45.512874 6508.4020 4.7313551e+10 0.079169038 0.034816815 102.01448 45.321053 6510.9603 4.2784917e+10 0.090248305 0.035588269 102.14163 45.128131 6513.5187 3.8487662e+10 0.10172686 0.036359723 102.26879 44.940733 6516.0770 3.4707346e+10 0.11374942 0.037131177 102.39595 44.753332 6518.6353 3.1212648e+10 0.12625943 0.037902631 102.52190 44.565931 6521.1936 2.8010697e+10 0.13927614 0.038674085 102.64237 44.378533 6523.7519 2.5326220e+10 0.14790810 0.039365475 102.75101 44.209547 6526.3102 2.3051101e+10 0.15396248 0.039993341 102.85426 44.048925 6528.8686 2.1090252e+10 0.15960193 0.042131514 102.97378 43.863011 6531.4269 1.9166912e+10 0.16444329 0.045850007 103.09425 43.675611 6533.9852 1.7218785e+10 0.16786548 0.047938266 103.21472 43.488213 6536.5435 1.5443005e+10 0.16965524 0.048276799 103.33517 43.294451 6539.1018 1.4014406e+10 0.17151424 0.049766896 103.44503 43.115833 6541.6602 1.2832985e+10 0.17205814 0.051112447 103.54255 42.955210 6544.2185 1.1811388e+10 0.17109911 0.051821575 103.65175 42.775348 6546.7768 1.0790859e+10 0.16958587 0.053103698 103.76553 42.587949 6549.3351 9.7824671e+09 0.16713360 0.054307780 103.87931 42.400548 6551.8934 8.9749216e+09 0.16506572 0.055549357 103.98122 42.232702 6554.4517 8.3027891e+09 0.16232660 0.054841860 104.07874 42.072079 6557.0101 7.6892773e+09 0.15987177 0.053859801 104.19231 41.885028 6559.5684 7.0368282e+09 0.15689027 0.052323027 104.30279 41.694330 6562.1267 6.4071500e+09 0.15398896 0.050759346 104.40987 41.500254 6564.6850 5.8965943e+09 0.15114595 0.048461148 104.50167 41.339573 6567.2433 5.4590846e+09 0.14897089 0.046411443 104.59737 41.172106 6569.8017 5.0738787e+09 0.14722773 0.044904600 104.70446 40.984706 6572.3600 4.7201926e+09 0.14537662 0.044024010 104.79989 40.817695 6574.9183 4.4059268e+09 0.14310150 0.042413954 104.89195 40.656585 6577.4766 4.1435475e+09 0.14029143 0.039471739 104.99902 40.469223 6580.0349 3.8678092e+09 0.13748090 0.036488478 105.10259 40.281841 6582.5932 3.5914343e+09 0.13488393 0.035132357 105.20272 40.095235 6585.1516 3.3456142e+09 0.13242484 0.033849604 105.29451 39.934612 6587.7099 3.1150772e+09 0.13002855 0.033315651 105.38876 39.766319 6590.2682 2.9136453e+09 0.12713136 0.030563179 105.48915 39.578920 6592.8265 2.7344868e+09 0.12379204 0.027270728 105.57818 39.408191 6595.3848 2.5616140e+09 0.12014406 0.025663479 105.66493 39.240797 6597.9432 2.4057353e+09 0.11672960 0.025425104 105.76532 39.053399 6600.5015 2.2522407e+09 0.11494855 0.026020804 105.85775 38.880859 6603.0598 2.1046457e+09 0.11303970 0.026627879 105.94380 38.720234 6605.6181 1.9952878e+09 0.11149700 0.027183585 106.02519 38.559611 6608.1764 1.8900968e+09 0.10887043 0.023727707 106.10688 38.397153 6610.7347 1.7793287e+09 0.10554951 0.024705008 106.20727 38.209754 6613.2931 1.6772086e+09 0.10447181 0.023681115 106.29613 38.037735 6615.8514 1.5802965e+09 0.10312008 0.023277726 106.37644 37.877110 6618.4097 1.4965404e+09 0.10258318 0.024080166 106.46787 37.694262 6620.9680 1.4201528e+09 0.10186916 0.025079139 106.55705 37.515905 6623.5263 1.3438230e+09 0.10021079 0.024686824 106.63736 37.355282 6626.0847 1.2722154e+09 0.098854188 0.026483050 106.71767 37.194658 6628.6430 1.2091669e+09 0.097042512 0.025964147 106.79798 37.034034 6631.2013 1.1424070e+09 0.095208732 0.025951213 106.88968 36.850642 6633.7596 1.0780282e+09 0.093607134 0.026284872 106.97656 36.672782 6636.3179 1.0225997e+09 0.091848587 0.026426290 107.05114 36.512159 6638.8762 9.6616801e+08 0.090514277 0.025633467 107.13744 36.335120 6641.4346 9.1378316e+08 0.091019806 0.025149776 107.22887 36.150902 6643.9929 8.6153864e+08 0.089889346 0.025342531 107.30344 35.990279 6646.5512 8.1703719e+08 0.088531018 0.026205465 107.37802 35.829657 6649.1095 7.8277140e+08 0.086849890 0.027482727 107.45259 35.669034 6651.6678 7.4579952e+08 0.086123064 0.026995963 107.53503 35.491477 6654.2262 7.0831220e+08 0.084977010 0.027939883 107.62032 35.307782 6656.7845 6.6924687e+08 0.082530012 0.028711941 107.69489 35.147158 6659.3428 6.3894093e+08 0.080442363 0.031763093 107.76947 34.988800 6661.9011 6.1085207e+08 0.078660989 0.032993902 107.84404 34.833913 6664.4594 5.7892020e+08 0.077502427 0.030525076 107.92672 34.657831 6667.0177 5.5058190e+08 0.077453065 0.027109974 108.01177 34.474656 6669.5761 5.2202098e+08 0.076619457 0.027764049 108.08634 34.314033 6672.1344 4.9592285e+08 0.076635339 0.026957487 108.16329 34.142325 6674.6927 4.7257945e+08 0.075462752 0.029539126 108.24359 33.954961 6677.2510 4.4680689e+08 0.073248085 0.032001375 108.31334 33.792203 6679.8093 4.2639255e+08 0.073294422 0.029598975 108.38320 33.631581 6682.3677 4.0855499e+08 0.074240712 0.030705442 108.45777 33.470958 6684.9260 3.8593751e+08 0.074369978 0.032701081 108.53483 33.301624 6687.4843 3.6737227e+08 0.072282024 0.034072808 108.61515 33.120916 6690.0426 3.4603932e+08 0.069934381 0.033110981 108.68468 32.959081 6692.6009 3.2752874e+08 0.068851080 0.032067513 108.75352 32.798458 6695.1592 3.1623960e+08 0.068125728 0.029830223 108.82236 32.637833 6697.7176 3.0416210e+08 0.067319859 0.030182074 108.89640 32.465075 6700.2759 2.9512520e+08 0.065367132 0.030872345 108.97671 32.277677 6702.8342 2.8292081e+08 0.064276187 0.033542839 109.04052 32.121458 6705.3925 2.6865656e+08 0.064410206 0.037366417 109.10485 31.965333 6707.9508 2.6091313e+08 0.063923402 0.040050621 109.17369 31.804710 6710.5092 2.4864760e+08 0.062307735 0.040596155 109.24796 31.631431 6713.0675 2.3509288e+08 0.059902795 0.043930644 109.32827 31.444031 6715.6258 2.2268334e+08 0.057553544 0.048018625 109.39175 31.288445 6718.1841 2.1080835e+08 0.055104101 0.050099143 109.45732 31.125909 6720.7424 2.0232860e+08 0.054555443 0.050333744 109.53095 30.938509 6723.3007 1.9539679e+08 0.053478613 0.049536673 109.60102 30.770955 6725.8591 1.8529881e+08 0.049247532 0.041039406 109.66986 30.610331 6728.4174 1.7954010e+08 0.048517976 0.040219660 109.73297 30.455434 6730.9757 1.7245295e+08 0.046840374 0.041716701 109.79875 30.292275 6733.5340 1.6307549e+08 0.045591600 0.046823624 109.87236 30.104911 6736.0923 1.5574668e+08 0.047181758 0.050704073 109.93798 29.942240 6738.6507 1.4550682e+08 0.048652896 0.060903220 110.00126 29.786799 6741.2090 1.4122734e+08 0.047509404 0.066354680 110.07488 29.599399 6743.7673 1.3772398e+08 0.042654098 0.076223533 110.14000 29.429002 6746.3256 1.2888945e+08 0.039972333 0.075201760 110.19736 29.274115 6748.8839 1.2356843e+08 0.037415649 0.071667247 110.26740 29.093877 6751.4422 1.1695310e+08 0.033700958 0.073898653 110.33802 28.915763 6754.0006 1.1226771e+08 0.031551749 0.076212572 110.40112 28.760877 6756.5589 1.0764809e+08 0.028710838 0.075604982 110.46630 28.588356 6759.1172 1.0173730e+08 0.029428875 0.075848236 110.53304 28.402524 6761.6755 99435351. 0.032227629 0.078024035 110.59615 28.247637 6764.2338 97093627. 0.036649744 0.079494488 110.66042 28.082832 6766.7921 97928258. 0.037508367 0.081505605 110.72734 27.895434 6769.3505 91828055. 0.032397248 0.085304300 110.79117 27.734400 6771.9088 87381128. 0.027975319 0.091509346 110.85453 27.577767 6774.4671 83698559. 0.023572988 0.097714392 110.92144 27.397097 6777.0254 77562343. 0.019311863 0.10391944 110.98837 27.212569 6779.5837 75906196. 0.014934057 0.11012449 111.05454 27.027744 6782.1421 75079068. 0.010530511 0.11632953 111.11191 26.872856 6784.7004 70409912. 0.0063047098 0.12253458 111.17248 26.709294 6787.2587 65912106. 0.0021046751 0.12873962 111.23941 26.528588 6789.8170 61475811. -0.0020620842 0.13494467 111.29829 26.364787 6792.3753 61369025. -0.0064799044 0.14114972 111.35660 26.202184 6794.9336 62249296. -0.010950658 0.14735476 111.42352 26.021478 6797.4920 62077403. -0.015359207 0.15355981 111.49045 25.840772 6800.0503 59922259. -0.019632778 0.15976486 111.55739 25.660066 6802.6086 55712516. -0.023724325 0.16596990 111.62431 25.479359 6805.1669 56681388. -0.028179584 0.17217495 111.68181 25.311044 6807.7252 53114407. -0.032238426 0.17837999 111.73343 25.150446 6810.2836 51096010. -0.036358511 0.18458504 111.79840 24.972301 6812.8419 47446861. -0.040201745 0.19079009 111.86280 24.791595 6815.4002 43314652. -0.043774529 0.19699513 111.92304 24.610889 6817.9585 43245114. -0.047715381 0.20320018 111.98919 24.430182 6820.5168 41825234. -0.051123416 0.20940523 112.05015 24.259552 6823.0751 43233214. -0.054478305 0.21561027 112.10178 24.104665 6825.6335 42886314. -0.056360451 0.22181532 112.16331 23.933073 6828.1918 40359291. -0.043617647 0.22802036 112.22921 23.752367 6830.7501 41245200. -0.062773195 0.23422541 112.28945 23.571659 6833.3084 40449126. -0.096666852 0.24043046 112.34967 23.390976