# # 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 = 44.805908 km # Date (UTC) = 2015-11-28T09:29:53.423 # Date (julian) = 2457354.89575721 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6504.4314 5.6984978e+10 0.062995179 0.033619498 -17.608203 57.930515 6506.5806 5.2153253e+10 0.072295003 0.034267576 -17.767442 57.836726 6508.7298 4.7286361e+10 0.081739813 0.034915655 -17.923458 57.739743 6510.8790 4.2685993e+10 0.091383650 0.035563733 -18.079475 57.642760 6513.0281 3.8511166e+10 0.10129313 0.036211812 -18.220434 57.558391 6515.1773 3.5251125e+10 0.11173188 0.036859890 -18.359112 57.475933 6517.3265 3.2549710e+10 0.12265882 0.037507969 -18.500419 57.390565 6519.4757 3.0140992e+10 0.13400244 0.038156047 -18.652219 57.293582 6521.6249 2.7796077e+10 0.14564166 0.038804126 -18.804019 57.196599 6523.7740 2.5507410e+10 0.15239789 0.039370954 -18.952323 57.099617 6525.9232 2.3453866e+10 0.15736102 0.039676851 -19.099906 57.002634 6528.0724 2.1560908e+10 0.16313461 0.041499904 -19.247489 56.905651 6530.2216 1.9883002e+10 0.16768461 0.044138874 -19.395072 56.808669 6532.3707 1.8293941e+10 0.17132754 0.046993901 -19.542654 56.711686 6534.5199 1.6782527e+10 0.17329120 0.048089997 -19.690236 56.614703 6536.6691 1.5371223e+10 0.17415035 0.048389151 -19.837818 56.517721 6538.8183 1.4091008e+10 0.17491969 0.049555133 -19.971023 56.428426 6540.9674 1.3041815e+10 0.17469167 0.051311147 -20.098475 56.342207 6543.1166 1.2127829e+10 0.17361296 0.051412500 -20.226666 56.255488 6545.2658 1.1296064e+10 0.17204728 0.052457948 -20.370032 56.158506 6547.4150 1.0498969e+10 0.17009084 0.053445170 -20.513398 56.061523 6549.5641 9.7014235e+09 0.16808692 0.054541192 -20.653918 55.964541 6551.7133 8.9470412e+09 0.16635473 0.055486139 -20.793067 55.867558 6553.8625 8.2550566e+09 0.16413695 0.054901499 -20.930937 55.770575 6556.0117 7.5971866e+09 0.16196268 0.054011409 -21.065870 55.673593 6558.1609 7.0127901e+09 0.16026874 0.053102236 -21.200802 55.576610 6560.3100 6.5064731e+09 0.15781579 0.051994776 -21.321763 55.486178 6562.4592 6.0686458e+09 0.15519504 0.050442950 -21.441702 55.396225 6564.6084 5.7006534e+09 0.15255912 0.048495877 -21.565596 55.304417 6566.7576 5.3435453e+09 0.15034167 0.046754334 -21.700528 55.207433 6568.9067 4.9916377e+09 0.14816448 0.044938154 -21.835461 55.110449 6571.0559 4.6517808e+09 0.14649485 0.044488004 -21.966631 55.013466 6573.2051 4.3376039e+09 0.14448994 0.043492901 -22.097346 54.916484 6575.3543 4.0487542e+09 0.14206366 0.042019266 -22.228073 54.817298 6577.5034 3.7856695e+09 0.13927564 0.039429583 -22.358808 54.716084 6579.6526 3.5602501e+09 0.13607417 0.036711723 -22.486809 54.617114 6581.8018 3.3642377e+09 0.13297176 0.035353813 -22.599251 54.530909 6583.9510 3.1998234e+09 0.12967679 0.034540326 -22.711694 54.444703 6586.1002 3.0413867e+09 0.12642299 0.033170001 -22.830904 54.351279 6588.2493 2.8807306e+09 0.12350832 0.033296667 -22.957403 54.250078 6590.3985 2.7169669e+09 0.12005728 0.030320786 -23.083902 54.148878 6592.5477 2.5540279e+09 0.11693835 0.027541561 -23.210402 54.047678 6594.6969 2.4056173e+09 0.11425013 0.025789982 -23.336902 53.946478 6596.8460 2.2636338e+09 0.11172613 0.025723427 -23.460288 53.848391 6598.9952 2.1419721e+09 0.10984458 0.024932016 -23.582570 53.751409 6601.1444 2.0214156e+09 0.10994442 0.027113688 -23.704853 53.652879 6603.2936 1.9029810e+09 0.10890386 0.026489484 -23.827136 53.551681 6605.4427 1.7914469e+09 0.10834035 0.027036468 -23.949379 53.450508 6607.5919 1.6910002e+09 0.10662934 0.024538180 -24.054447 53.360475 6609.7411 1.6120792e+09 0.10355969 0.023926071 -24.159392 53.270520 6611.8903 1.5401792e+09 0.10092243 0.024390726 -24.268637 53.178262 6614.0394 1.4684938e+09 0.099760722 0.023913314 -24.386721 53.081264 6616.1886 1.3943023e+09 0.098096278 0.023311903 -24.504805 52.984267 6618.3378 1.3252510e+09 0.097275254 0.024025876 -24.618840 52.883254 6620.4870 1.2605477e+09 0.096279641 0.024924126 -24.732690 52.782055 6622.6362 1.1966506e+09 0.094650630 0.024588670 -24.849004 52.680856 6624.7853 1.1314584e+09 0.092864860 0.025282693 -24.967069 52.579655 6626.9345 1.0675906e+09 0.090618915 0.025400253 -25.083340 52.478455 6629.0837 1.0048881e+09 0.089261264 0.026093975 -25.192972 52.377255 6631.2329 9.4819386e+08 0.087270424 0.025954420 -25.302605 52.276055 6633.3820 9.0009310e+08 0.085556025 0.026218953 -25.405141 52.184318 6635.5312 8.6135379e+08 0.083590705 0.026479451 -25.506339 52.094365 6637.6804 8.2502708e+08 0.081947748 0.025828177 -25.608999 52.002463 6639.8296 7.8926997e+08 0.081341756 0.025331568 -25.718632 51.901262 6641.9787 7.5164544e+08 0.081493446 0.025151624 -25.828266 51.800062 6644.1279 7.1585106e+08 0.080609021 0.025357432 -25.937899 51.698863 6646.2771 6.8258572e+08 0.079818901 0.026063582 -26.047531 51.597664 6648.4263 6.4956477e+08 0.078943176 0.027249634 -26.155357 51.496459 6650.5755 6.1524688e+08 0.078556457 0.026386974 -26.260789 51.395243 6652.7246 5.7981886e+08 0.078322501 0.027449895 -26.366220 51.294029 6654.8738 5.4642380e+08 0.077418450 0.027663977 -26.471636 51.192831 6657.0230 5.1456796e+08 0.075676241 0.028927769 -26.577052 51.091632 6659.1722 4.8720494e+08 0.074293090 0.031798686 -26.682468 50.990433 6661.3213 4.6121557e+08 0.073096082 0.032698612 -26.787884 50.889233 6663.4705 4.4043606e+08 0.071899676 0.032352823 -26.889599 50.791585 6665.6197 4.2212633e+08 0.071672462 0.027531750 -26.983301 50.701632 6667.7689 4.0833486e+08 0.071033270 0.027385875 -27.077003 50.611679 6669.9180 3.9050877e+08 0.070389874 0.027412810 -27.175563 50.514439 6672.0672 3.6879339e+08 0.070211385 0.026918560 -27.276762 50.413239 6674.2164 3.5113274e+08 0.069320749 0.029137334 -27.377961 50.312039 6676.3656 3.3420907e+08 0.067109408 0.031949332 -27.479160 50.210839 6678.5147 3.2388942e+08 0.066203969 0.030592329 -27.580360 50.109639 6680.6639 3.1258394e+08 0.066851288 0.029584785 -27.677744 50.008440 6682.8131 2.9592939e+08 0.067552393 0.031045783 -27.774726 49.907242 6684.9623 2.7992796e+08 0.067537619 0.032702923 -27.873958 49.803794 6687.1115 2.6311054e+08 0.066006084 0.034280741 -27.975158 49.698378 6689.2606 2.5270084e+08 0.063595564 0.033781415 -28.075678 49.593640 6691.4098 2.4066398e+08 0.062997846 0.032904575 -28.172676 49.492425 6693.5590 2.2863369e+08 0.062443327 0.031412323 -28.269674 49.391210 6695.7082 2.1530611e+08 0.062519959 0.029729393 -28.363327 49.290008 6697.8573 2.0475039e+08 0.062115441 0.030199763 -28.456092 49.188809 6700.0065 1.9548401e+08 0.060877707 0.030672550 -28.550624 49.087610 6702.1557 1.8807873e+08 0.059544534 0.033001050 -28.647607 48.986410 6704.3049 1.8049482e+08 0.060113203 0.036327259 -28.744390 48.885010 6706.4540 1.7353941e+08 0.060160135 0.039236633 -28.837156 48.779594 6708.6032 1.6271493e+08 0.059923509 0.040700464 -28.929922 48.674178 6710.7524 1.5344958e+08 0.058568524 0.040643767 -29.022688 48.571612 6712.9016 1.4892895e+08 0.056603271 0.043503881 -29.115455 48.470413 6715.0508 1.4420683e+08 0.054602821 0.047430495 -29.206939 48.369214 6717.1999 1.4233991e+08 0.052438078 0.049861902 -29.295488 48.268014 6719.3491 1.3595424e+08 0.050401105 0.051038164 -29.384038 48.166813 6721.4983 1.2807930e+08 0.050643378 0.050454033 -29.488882 48.052127 6723.6475 1.2013807e+08 0.048894384 0.049730042 -29.594904 47.936468 6725.7966 1.1219847e+08 0.044711702 0.041078401 -29.685941 47.829593 6727.9458 1.0479644e+08 0.043639111 0.039700295 -29.774490 47.724177 6730.0950 1.0460711e+08 0.041986014 0.040509142 -29.863039 47.620811 6732.2442 1.0244035e+08 0.040087524 0.043785159 -29.951590 47.519611 6734.3933 95709037. 0.039158665 0.049329933 -30.040140 47.418412 6736.5425 90132685. 0.040541717 0.052406025 -30.128689 47.317212 6738.6917 82533682. 0.041084195 0.061129185 -30.217238 47.216012 6740.8409 79545182. 0.039860752 0.065486845 -30.302664 47.111668 6742.9900 81431218. 0.036270271 0.071023189 -30.387010 47.006236 6745.1392 79450923. 0.032743966 0.078625415 -30.475830 46.897003 6747.2884 73656504. 0.027673937 0.067261876 -30.572212 46.781345 6749.4376 66637814. 0.025765413 0.072158124 -30.665019 46.669977 6751.5868 61559019. 0.021308894 0.073959754 -30.749353 46.568777 6753.7359 62522305. 0.017272058 0.075358895 -30.833686 46.467576 6755.8851 62232246. -0.00028625804 0.074217282 -30.918019 46.362476 6758.0343 57868917. 0.012244142 0.073777821 -31.002353 46.257059 6760.1835 50851468. 0.045149870 0.076411122 -31.084352 46.153977