# # 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 = 44.275962 km # Date (UTC) = 2012-01-14T10:13:14.560 # Date (julian) = 2455940.92586297 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6491.1410 3.9173420e+11 0.025916838 0.029611790 -36.016518 47.930611 6493.4856 3.1823678e+11 0.034695843 0.030318805 -36.122320 47.806407 6495.8302 2.6319938e+11 0.043141208 0.031025821 -36.228124 47.682203 6498.1748 2.1833394e+11 0.051213199 0.031732836 -36.348773 47.545733 6500.5195 1.7817984e+11 0.058869993 0.032439851 -36.469693 47.409040 6502.8641 1.4413868e+11 0.066014276 0.033146867 -36.590612 47.272349 6505.2087 1.1843878e+11 0.072647007 0.033853882 -36.708021 47.137882 6507.5533 9.9733141e+10 0.079071407 0.034560897 -36.809224 47.013679 6509.8980 8.5116144e+10 0.085684768 0.035267913 -36.910510 46.889422 6512.2426 7.3754768e+10 0.092927941 0.035974928 -37.031430 46.752731 6514.5872 6.4145007e+10 0.10110658 0.036681943 -37.151812 46.615504 6516.9318 5.5626771e+10 0.11040501 0.037388959 -37.267476 46.473554 6519.2765 4.8629228e+10 0.12123068 0.038095974 -37.379326 46.336074 6521.6211 4.3033595e+10 0.13391418 0.038802989 -37.475927 46.216470 6523.9657 3.8615420e+10 0.14281066 0.039418460 -37.572891 46.096282 6526.3103 3.4674225e+10 0.15127780 0.039993433 -37.683295 45.954334 6528.6550 3.1024335e+10 0.16007142 0.041962060 -37.792558 45.815159 6530.9996 2.7781260e+10 0.16760703 0.045228091 -37.893761 45.695555 6533.3442 2.5040631e+10 0.17443779 0.047665864 -37.994964 45.575951 6535.6888 2.2596341e+10 0.17604661 0.047925486 -38.099916 45.435114 6538.0335 2.0383828e+10 0.17664387 0.049172971 -38.204653 45.294240 6540.3781 1.8560749e+10 0.17515342 0.051032716 -38.301269 45.174619 6542.7227 1.7142747e+10 0.17250987 0.051276616 -38.397886 45.054999 6545.0673 1.5838384e+10 0.17068354 0.052456170 -38.501964 44.915849 6547.4120 1.4431316e+10 0.16843303 0.053444022 -38.607112 44.773900 6549.7566 1.2972572e+10 0.16668207 0.054737292 -38.717372 44.637063 6552.1012 1.1729445e+10 0.16507792 0.055561294 -38.826156 44.501250 6554.4458 1.0777415e+10 0.16290488 0.054841736 -38.913558 44.377048 6556.7905 9.9849286e+09 0.16087990 0.053896915 -39.000959 44.252846 6559.1351 9.2585554e+09 0.15819442 0.052371935 -39.104272 44.117445 6561.4797 8.5213403e+09 0.15555641 0.051136295 -39.209403 43.980769 6563.8243 7.8420822e+09 0.15271128 0.048974813 -39.301495 43.856480 6566.1689 7.2827817e+09 0.15028191 0.047087310 -39.393498 43.732277 6568.5136 6.7494298e+09 0.14835817 0.045299566 -39.491973 43.597826 6570.8582 6.2193697e+09 0.14644657 0.044562014 -39.591862 43.461135 6573.2028 5.7120650e+09 0.14423471 0.043494721 -39.680282 43.335915 6575.5474 5.2947495e+09 0.14134407 0.041825446 -39.767685 43.211712 6577.8921 4.9951088e+09 0.13790816 0.038819143 -39.855087 43.090933 6580.2367 4.7192552e+09 0.13412134 0.036302011 -39.942489 42.971329 6582.5813 4.4270502e+09 0.13049411 0.035135601 -40.034018 42.838971 6584.9259 4.1200641e+09 0.12719149 0.034011113 -40.128651 42.697024 6587.2706 3.8321971e+09 0.12425307 0.033218317 -40.215373 42.570018 6589.6152 3.5902484e+09 0.12175816 0.031825486 -40.298175 42.450414 6591.9598 3.3724108e+09 0.11919410 0.028118865 -40.389433 42.319752 6594.3044 3.1520016e+09 0.11682581 0.026005398 -40.489323 42.177802 6596.6491 2.9397374e+09 0.11418225 0.025724323 -40.579083 42.049100 6598.9937 2.7507763e+09 0.11218233 0.024932741 -40.661885 41.929498 6601.3383 2.5754378e+09 0.11221475 0.027205018 -40.747442 41.800533 6603.6829 2.4035531e+09 0.11088771 0.026258973 -40.836818 41.658584 6606.0276 2.2424657e+09 0.11038909 0.027454425 -40.922797 41.528185 6608.3722 2.1057941e+09 0.10769096 0.023722531 -41.005599 41.408583 6610.7168 1.9741928e+09 0.10430237 0.024687881 -41.090655 41.281316 6613.0614 1.8404382e+09 0.10285524 0.023596133 -41.180030 41.139366 6615.4061 1.7121106e+09 0.10131015 0.023264025 -41.266507 41.007269 6617.7507 1.5966494e+09 0.10013347 0.023688138 -41.349309 40.887665 6620.0953 1.5058340e+09 0.099124153 0.024797913 -41.430883 40.766833 6622.4399 1.4278732e+09 0.097284796 0.024640895 -41.509086 40.642629 6624.7846 1.3475937e+09 0.095217133 0.025282283 -41.588329 40.517262 6627.1292 1.2671809e+09 0.092719187 0.025366714 -41.677704 40.380572 6629.4738 1.1894638e+09 0.091112959 0.026023438 -41.764064 40.246267 6631.8184 1.1182565e+09 0.088805717 0.026013902 -41.837666 40.122064 6634.1631 1.0561292e+09 0.086683594 0.026338737 -41.911539 39.997646 6636.5077 9.9114013e+08 0.084697205 0.026352597 -42.000916 39.860955 6638.8523 9.2715760e+08 0.083310675 0.025634509 -42.088477 39.725699 6641.1969 8.7231370e+08 0.083916275 0.025148969 -42.162090 39.601477 6643.5416 8.2544550e+08 0.083395278 0.025274388 -42.235703 39.477255 6645.8862 7.7508482e+08 0.082575147 0.025866829 -42.319208 39.341290 6648.2308 7.2395491e+08 0.081767768 0.027118790 -42.402910 39.205091 6650.5754 6.7704418e+08 0.081315301 0.026386970 -42.476512 39.080888 6652.9201 6.3776258e+08 0.081067762 0.027503667 -42.550113 38.956685 6655.2647 6.0569707e+08 0.079771345 0.027719584 -42.632819 38.821671 6657.6093 5.6974918e+08 0.078064114 0.029607890 -42.716936 38.684980 6659.9539 5.3679629e+08 0.076666583 0.031635607 -42.790921 38.564754 6662.2986 5.0925136e+08 0.075132321 0.032876763 -42.864523 38.445150 6664.6432 4.8006105e+08 0.074189186 0.029852709 -42.942277 38.307901 6666.9878 4.5673867e+08 0.073858353 0.027101082 -43.021137 38.165953 6669.3324 4.3152017e+08 0.072692053 0.028014272 -43.095330 38.043838 6671.6771 4.0954037e+08 0.072560109 0.026874997 -43.168931 37.924234 6674.0217 3.8979513e+08 0.071594601 0.028973081 -43.239250 37.801348 6676.3663 3.6907050e+08 0.069026985 0.031949806 -43.308252 37.677145 6678.7109 3.5432020e+08 0.067809288 0.030461113 -43.382577 37.546200 6681.0556 3.3588583e+08 0.068490901 0.029699979 -43.461439 37.409509 6683.4002 3.1293510e+08 0.068834100 0.031775049 -43.540299 37.272817 6685.7448 2.9205488e+08 0.068162550 0.033491535 -43.619158 37.136124 6688.0894 2.7407057e+08 0.065382462 0.033805834 -43.690766 37.008621 6690.4341 2.6275322e+08 0.063203196 0.033066121 -43.759769 36.884418 6692.7787 2.5274576e+08 0.062064308 0.031861097 -43.834310 36.753198 6695.1233 2.4003585e+08 0.061375427 0.029836825 -43.913169 36.616505 6697.4679 2.2935917e+08 0.060654070 0.030150482 -43.982490 36.491089 6699.8126 2.1769894e+08 0.059031076 0.030840679 -44.046893 36.371487 6702.1572 2.0676760e+08 0.057240296 0.033002236 -44.118321 36.241026 6704.5018 1.9548272e+08 0.057515171 0.036423964 -44.197180 36.099076 6706.8464 1.8621816e+08 0.057139660 0.039919542 -44.267599 35.970173 6709.1911 1.7808414e+08 0.056326674 0.041011026 -44.332001 35.850568 6711.5357 1.6765639e+08 0.054169645 0.041301684 -44.400174 35.723959 6713.8803 1.5545016e+08 0.051676320 0.046870478 -44.473777 35.587268 6716.2249 1.4467855e+08 0.049601835 0.048732652 -44.547381 35.447906 6718.5695 1.3626526e+08 0.047013207 0.050699443 -44.620986 35.305957 6720.9142 1.3069501e+08 0.046834750 0.050313843 -44.689016 35.177545 6723.2588 1.2701436e+08 0.045564807 0.049513280 -44.753417 35.057943 6725.6034 1.2496828e+08 0.041275633 0.041199091 -44.821793 34.930959 6727.9480 1.1979081e+08 0.040248633 0.039697316 -44.895396 34.794266 6730.2927 1.1024377e+08 0.038633522 0.040780191 -44.961686 34.666629 6732.6373 1.0449570e+08 0.037041244 0.043857533 -45.021488 34.547026 6734.9819 1.0022360e+08 0.036967701 0.049294520 -45.086204 34.419468 6737.3265 99507239. 0.038836117 0.055175784 -45.159807 34.277519 6739.6712 98345994. 0.039208030 0.063647936 -45.231024 34.137955 6742.0158 90976375. 0.036832928 0.068649237 -45.299370 34.001262 6744.3604 84990980. 0.031888302 0.078072187 -45.370617 33.864571 6746.7050 81032807. 0.027960478 0.070790353 -45.444220 33.727880 6749.0497 76424407. 0.026367587 0.072264334 -45.508855 33.602291 6751.3943 75327215. 0.022298539 0.073878380 -45.568655 33.482687 6753.7389 71302216. 0.018902479 0.075368563 -45.632522 33.354952 6756.0835 64128729. 0.013667943 0.074381876 -45.700869 33.218260 6758.4282 60905106. 0.0080265319 0.074610739 -45.769216 33.081569 6760.7728 57813944. -0.022889188 0.077534949 -45.837562 32.944878 6763.1174 57400771. 0.0082971514 0.076795358 -45.905909 32.808185 6765.4620 56424012. 0.066426715 0.079615540 -45.974255 32.671493