# # 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 = 53.696648 km # Date (UTC) = 2012-01-22T10:26:15.923 # Date (julian) = 2455948.93490651 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6502.5390 1.4187307e+11 0.059019041 0.033048833 91.028598 50.704075 6504.9119 1.1493487e+11 0.068855694 0.033764395 91.179571 50.536461 6507.2849 9.2253686e+10 0.078667305 0.034479956 91.334770 50.368846 6509.6579 7.5656272e+10 0.088674743 0.035195518 91.485572 50.201231 6512.0309 6.3260512e+10 0.098963078 0.035911080 91.633958 50.033617 6514.4038 5.3942842e+10 0.10964057 0.036626642 91.776737 49.866003 6516.7768 4.6771692e+10 0.12079791 0.037342204 91.912176 49.710049 6519.1498 4.1147876e+10 0.13249429 0.038057766 92.039877 49.566383 6521.5227 3.6713621e+10 0.14476577 0.038773328 92.176725 49.408189 6523.8957 3.2785911e+10 0.15191852 0.039401106 92.319481 49.240611 6526.2687 2.9037450e+10 0.15707035 0.039949737 92.462265 49.072997 6528.6416 2.5795744e+10 0.16204516 0.041951481 92.595131 48.914615 6531.0146 2.3127975e+10 0.16559480 0.045249910 92.712189 48.770949 6533.3876 2.0887067e+10 0.16973085 0.047684286 92.842268 48.615162 6535.7605 1.8871517e+10 0.17068615 0.047894386 92.985052 48.447548 6538.1335 1.6976203e+10 0.17270963 0.049221682 93.116718 48.279933 6540.5065 1.5420257e+10 0.17339128 0.051093364 93.243299 48.119131 6542.8794 1.4213787e+10 0.17244979 0.051336115 93.360361 47.975466 6545.2524 1.3174762e+10 0.17119183 0.052457828 93.482812 47.822098 6547.6254 1.2248430e+10 0.16921520 0.053525176 93.613178 47.654484 6549.9983 1.1385581e+10 0.16745856 0.054983650 93.732976 47.505891 6552.3713 1.0619084e+10 0.16527425 0.055493313 93.850037 47.362226 6554.7443 9.9033818e+09 0.16304545 0.054847998 93.973591 47.196652 6557.1172 9.2211170e+09 0.16078723 0.053792631 94.093966 47.036328 6559.4902 8.6305432e+09 0.15804779 0.052331853 94.205686 46.892687 6561.8632 8.1156864e+09 0.15532098 0.050947336 94.322686 46.738873 6564.2361 7.6465221e+09 0.15239637 0.048664586 94.446848 46.571258 6566.6091 7.1975980e+09 0.15034204 0.046838323 94.556574 46.418797 6568.9821 6.7596022e+09 0.14834334 0.044868916 94.662991 46.269809 6571.3550 6.3393775e+09 0.14697440 0.044406311 94.785983 46.103424 6573.7280 5.9348670e+09 0.14483628 0.043073285 94.904408 45.943554 6576.1010 5.5639715e+09 0.14255160 0.041255187 95.010825 45.799888 6578.4739 5.2278421e+09 0.13992754 0.037901228 95.122363 45.645590 6580.8469 4.9157915e+09 0.13715988 0.035738101 95.240316 45.477976 6583.2199 4.6085577e+09 0.13494950 0.034910383 95.344224 45.330314 6585.5928 4.3282191e+09 0.13236638 0.033496821 95.445319 45.186648 6587.9658 4.1168380e+09 0.13001062 0.033372353 95.546418 45.037909 6590.3388 3.9148802e+09 0.12686870 0.030431917 95.648770 44.887538 6592.7117 3.6902446e+09 0.12358395 0.027382220 95.766722 44.719923 6595.0847 3.4610250e+09 0.12012790 0.025632354 95.874396 44.563410 6597.4577 3.2363851e+09 0.11668738 0.025578306 95.970173 44.419745 6599.8306 3.0631618e+09 0.11490058 0.024979688 96.065950 44.276079 6602.2036 2.9241875e+09 0.11405390 0.027342891 96.161727 44.132413 6604.5766 2.7656485e+09 0.11300605 0.026413621 96.273129 43.971869 6606.9495 2.6088244e+09 0.11230892 0.025797685 96.388493 43.806007 6609.3225 2.4519546e+09 0.10941723 0.023801729 96.478937 43.657047 6611.6955 2.3220744e+09 0.10689030 0.024514954 96.570523 43.509221 6614.0684 2.2246626e+09 0.10591962 0.023893345 96.666300 43.365555 6616.4414 2.1324339e+09 0.10443748 0.023351577 96.760295 43.221890 6618.8144 2.0492904e+09 0.10369539 0.024385739 96.850750 43.078225 6621.1873 1.9513732e+09 0.10285579 0.025027354 96.950901 42.923650 6623.5603 1.8438479e+09 0.10114212 0.024699408 97.062645 42.756035 6625.9333 1.7349134e+09 0.099895434 0.026511273 97.156406 42.608650 6628.3062 1.6370084e+09 0.098081064 0.025827429 97.246861 42.464984 6630.6792 1.5569144e+09 0.096280287 0.025929975 97.332182 42.316184 6633.0522 1.4869012e+09 0.094596752 0.026161361 97.417776 42.167656 6635.4251 1.4255612e+09 0.092674318 0.026463543 97.508231 42.023990 6637.7981 1.3590024e+09 0.091103989 0.025770525 97.601801 41.875378 6640.1711 1.2864978e+09 0.090724679 0.025249721 97.707335 41.707762 6642.5440 1.2124858e+09 0.090412372 0.025173959 97.800718 41.554414 6644.9170 1.1432677e+09 0.089116999 0.025442714 97.885855 41.410749 6647.2900 1.0921845e+09 0.087440578 0.026590451 97.970989 41.267084 6649.6629 1.0477791e+09 0.086064554 0.026719860 98.056122 41.123418 6652.0359 1.0084157e+09 0.085288525 0.027260400 98.141258 40.975300 6654.4089 9.6956619e+08 0.084378780 0.027862042 98.226394 40.826315 6656.7818 9.1903193e+08 0.082581783 0.028709633 98.325117 40.659490 6659.1548 8.6764972e+08 0.081155599 0.031802306 98.417677 40.500181 6661.5278 8.1837443e+08 0.079946827 0.032803756 98.497491 40.356516 6663.9007 7.7467036e+08 0.078648688 0.032233596 98.579792 40.212850 6666.2737 7.3968880e+08 0.078765058 0.026961930 98.664925 40.069183 6668.6467 7.0703854e+08 0.077736259 0.028043035 98.746931 39.925519 6671.0196 6.7867267e+08 0.077645401 0.026865628 98.826746 39.781856 6673.3926 6.5208045e+08 0.077097185 0.028046392 98.906560 39.638191 6675.7656 6.2408301e+08 0.074913693 0.031264715 98.986375 39.494526 6678.1385 5.9390860e+08 0.073654003 0.030843951 99.077224 39.331000 6680.5115 5.6155008e+08 0.074102949 0.029551873 99.167434 39.167460 6682.8845 5.3359833e+08 0.074823021 0.031100317 99.247235 39.018498 6685.2574 5.0717476e+08 0.074558303 0.032976762 99.327040 38.871331 6687.6304 4.8591554e+08 0.072293206 0.033991314 99.406851 38.727667 6690.0034 4.6723398e+08 0.069930878 0.033115477 99.484219 38.584002 6692.3763 4.4728014e+08 0.068725640 0.032328302 99.558711 38.440336 6694.7493 4.3036572e+08 0.067856551 0.030210827 99.640410 38.282780 6697.1223 4.0780334e+08 0.067256563 0.030106740 99.727325 38.115166 6699.4952 3.8658849e+08 0.065685253 0.031133462 99.807355 37.970762 6701.8682 3.6669974e+08 0.063711509 0.032683361 99.886688 37.827097 6704.2412 3.4892060e+08 0.063990117 0.036295985 99.961180 37.683432 6706.6141 3.3897740e+08 0.063809569 0.039515279 100.03567 37.539766 6708.9871 3.2623795e+08 0.063275939 0.041118511 100.11017 37.396100 6711.3601 3.1034802e+08 0.061474092 0.041101906 100.18672 37.244505 6713.7330 2.9686876e+08 0.059264782 0.046337901 100.26742 37.076891 6716.1060 2.8348821e+08 0.057424396 0.048557510 100.34365 36.926525 6718.4790 2.7262109e+08 0.055076158 0.050558392 100.41815 36.782860 6720.8519 2.6188678e+08 0.054953093 0.050321053 100.49264 36.639197 6723.2249 2.4988289e+08 0.053896037 0.049494384 100.56713 36.495533 6725.5979 2.4159739e+08 0.049634465 0.041202551 100.63651 36.351868 6727.9709 2.3407456e+08 0.048702265 0.039666935 100.70662 36.206236 6730.3438 2.2440839e+08 0.047278226 0.040850318 100.78733 36.038622 6732.7168 2.1265327e+08 0.045870758 0.043872167 100.86511 35.882294 6735.0898 2.0288159e+08 0.046014769 0.049388710 100.93960 35.738627 6737.4627 1.9488045e+08 0.047808210 0.055609566 101.01094 35.594962 6739.8357 1.9045638e+08 0.047984382 0.063849272 101.08012 35.451296 6742.2087 1.8230685e+08 0.045519636 0.069119172 101.15751 35.290566 6744.5816 1.7104440e+08 0.041110020 0.078243280 101.23650 35.125388 6746.9546 1.6318684e+08 0.036460343 0.067889143 101.30035 34.981722 6749.3276 1.5530401e+08 0.035680360 0.072188249 101.36538 34.838057 6751.7005 1.5136949e+08 0.031986209 0.074007855 101.43455 34.694392 6754.0735 1.4709564e+08 0.030235480 0.076095294 101.50768 34.542524 6756.4465 1.4217063e+08 0.027470204 0.075315703 101.58836 34.374945 6758.8194 1.3890424e+08 0.027798545 0.075438098 101.65673 34.224866 6761.1924 1.3395794e+08 0.028942392 0.077984120 101.72058 34.081200 6763.5654 1.3001498e+08 0.034269817 0.078159567 101.78897 33.937535 6765.9383 1.2308777e+08 0.036568834 0.079702487 101.85814 33.793870 6768.3113 1.1746294e+08 0.033157330 0.081976119 101.93249 33.632940 6770.6843 1.1416388e+08 0.028461733 0.088539324 102.00313 33.477960 6773.0572 1.0952070e+08 0.024265373 0.094294813 102.06698 33.334294 6775.4302 1.0694043e+08 0.020047688 0.10005030 102.13597 33.179066 6777.8032 1.0225093e+08 0.015851968 0.10580579 102.21047 33.011454 6780.1761 93913744. 0.011704361 0.11156128 102.27568 32.864723 6782.5491 91778977. 0.0074855323 0.11731677 102.33953 32.721057 6784.9221 86346189. 0.0033110875 0.12307225 102.40338 32.577392 6787.2950 81908609. -0.00087000885 0.12882774 102.46844 32.431013 6789.6680 78605469. -0.0050610116 0.13458323 102.54293 32.263399 6792.0410 73990561. -0.0092389631 0.14033872 102.61431 32.098904 6794.4139 71567772. -0.013438533 0.14609421 102.68260 31.937498 6796.7869 66970381. -0.017617355 0.15184970 102.74693 31.791909 6799.1599 63297742. -0.021824506 0.15760518 102.81083 31.647951 6801.5328 60611234. -0.026047931 0.16336067 102.87911 31.480371 6803.9058 61858851. -0.030808251 0.16911616 102.94561 31.324515 6806.2788 58627226. -0.037601221 0.17487165 103.00946 31.186171 6808.6517 55016454. -0.039873903 0.18062714 103.07563 31.032557 6811.0247 50709796. -0.039138303 0.18638263 103.14391 30.864942