# # 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 = 44.442393 km # Date (UTC) = 2011-12-17T09:10:41.805 # Date (julian) = 2455912.88242829 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.7851 6.0457970e+10 0.058166444 0.033424585 -22.510861 46.145584 6505.7872 5.6503366e+10 0.066194275 0.034028314 -22.601208 46.047382 6507.7893 5.2335184e+10 0.074365392 0.034632043 -22.691555 45.949179 6509.7914 4.8437862e+10 0.082794670 0.035235772 -22.772799 45.860870 6511.7935 4.5034627e+10 0.091608904 0.035839500 -22.853105 45.773580 6513.7956 4.2144417e+10 0.10089584 0.036443229 -22.933411 45.686291 6515.7977 3.9412752e+10 0.11057113 0.037046958 -23.013717 45.599002 6517.7998 3.6789536e+10 0.12059948 0.037650687 -23.094024 45.511712 6519.8019 3.4288959e+10 0.13097597 0.038254416 -23.173709 45.424420 6521.8040 3.1970314e+10 0.14173788 0.038858144 -23.250533 45.337119 6523.8061 2.9904153e+10 0.14768120 0.039378900 -23.327358 45.249819 6525.8082 2.8009916e+10 0.15264823 0.039689977 -23.404179 45.162521 6527.8103 2.6225336e+10 0.15828662 0.041304757 -23.480995 45.075232 6529.8124 2.4518241e+10 0.16282930 0.043529866 -23.557810 44.987942 6531.8145 2.2864097e+10 0.16635623 0.046414197 -23.638953 44.895734 6533.8166 2.1165627e+10 0.16856413 0.047866620 -23.725371 44.797532 6535.8187 1.9488112e+10 0.16937710 0.047869145 -23.811789 44.699329 6537.8208 1.7975056e+10 0.17152944 0.049072201 -23.886356 44.611003 6539.8229 1.6698014e+10 0.17241865 0.050639744 -23.959680 44.523714 6541.8250 1.5637188e+10 0.17111178 0.051058983 -24.033147 44.436281 6543.8271 1.4665627e+10 0.16946469 0.051598974 -24.109971 44.345488 6545.8292 1.3736921e+10 0.16763752 0.052462996 -24.186796 44.254696 6547.8313 1.2867989e+10 0.16666781 0.053603502 -24.263000 44.164524 6549.8334 1.2073387e+10 0.16549382 0.054815609 -24.336323 44.077235 6551.8355 1.1352291e+10 0.16408372 0.055529035 -24.409646 43.989945 6553.8376 1.0736351e+10 0.16224165 0.054914000 -24.481875 43.902656 6555.8397 1.0180821e+10 0.16059382 0.054147786 -24.551706 43.815367 6557.8418 9.6524163e+09 0.15927831 0.053338441 -24.621538 43.728077 6559.8439 9.0949697e+09 0.15736008 0.052291924 -24.697056 43.635885 6561.8460 8.4723801e+09 0.15510656 0.050955769 -24.779547 43.537683 6563.8481 7.8476963e+09 0.15276138 0.048947257 -24.862037 43.439481 6565.8502 7.2817008e+09 0.15107852 0.047352928 -24.933090 43.351138 6567.8524 6.8115229e+09 0.14992881 0.045896502 -25.002922 43.263848 6569.8545 6.4252297e+09 0.14860860 0.044908036 -25.072891 43.176559 6571.8566 6.0739094e+09 0.14700494 0.044269333 -25.146224 43.089258 6573.8587 5.7358050e+09 0.14471510 0.042968427 -25.219557 43.001957 6575.8608 5.4286003e+09 0.14251871 0.041511092 -25.291661 42.914044 6577.8629 5.1489288e+09 0.14002979 0.038865019 -25.358000 42.823262 6579.8650 4.9029771e+09 0.13714733 0.036594986 -25.424340 42.732480 6581.8671 4.6608099e+09 0.13418311 0.035334048 -25.494490 42.639385 6583.8692 4.3954581e+09 0.13145295 0.034581729 -25.573052 42.541183 6585.8713 4.1195237e+09 0.12920956 0.033274207 -25.651614 42.442981 6587.8734 3.8516523e+09 0.12783601 0.033351877 -25.723489 42.353138 6589.8755 3.6216629e+09 0.12619287 0.031309100 -25.793321 42.265848 6591.8776 3.4238594e+09 0.12404922 0.028211658 -25.863153 42.178559 6593.8797 3.2456597e+09 0.12201590 0.026284378 -25.929842 42.091259 6595.8818 3.0835676e+09 0.11958508 0.025715015 -25.996191 42.003958 6597.8839 2.9298172e+09 0.11785178 0.025443804 -26.062539 41.916657 6599.8860 2.7906753e+09 0.11700313 0.024983018 -26.128879 41.829368 6601.8881 2.6626508e+09 0.11644290 0.027463934 -26.195219 41.742078 6603.8902 2.5370236e+09 0.11488169 0.026136277 -26.263004 41.652887 6605.8923 2.4072026e+09 0.11445716 0.027413616 -26.337638 41.554685 6607.8944 2.2719526e+09 0.11238755 0.023940877 -26.412272 41.456483 6609.8965 2.1418180e+09 0.10950525 0.023972237 -26.481693 41.365139 6611.8986 2.0303386e+09 0.10695411 0.024385406 -26.548033 41.277850 6613.9007 1.9337394e+09 0.10571042 0.023904065 -26.614372 41.190560 6615.9028 1.8413992e+09 0.10391142 0.023279309 -26.678043 41.100602 6617.9049 1.7649535e+09 0.10281891 0.023739273 -26.740891 41.009822 6619.9070 1.6870783e+09 0.10166641 0.024744764 -26.803740 40.919041 6621.9091 1.6067693e+09 0.10002255 0.024788113 -26.873673 40.821565 6623.9112 1.5205550e+09 0.097762724 0.024829422 -26.944389 40.723348 6625.9133 1.4292908e+09 0.096314125 0.026487484 -27.013552 40.629010 6627.9154 1.3531286e+09 0.094148171 0.025670429 -27.079892 40.541721 6629.9175 1.2892274e+09 0.092519655 0.025943211 -27.146232 40.454432 6631.9196 1.2304600e+09 0.090680220 0.026024182 -27.210858 40.367142 6633.9217 1.1748609e+09 0.089349273 0.026313180 -27.273706 40.279853 6635.9238 1.1255482e+09 0.088076942 0.026538332 -27.336555 40.192564 6637.9259 1.0755792e+09 0.087226256 0.025707910 -27.401866 40.098432 6639.9281 1.0233269e+09 0.087119425 0.025296368 -27.468644 40.000230 6641.9302 9.6955806e+08 0.087342607 0.025151459 -27.535103 39.902913 6643.9323 9.2053694e+08 0.086419581 0.025333378 -27.597951 39.815624 6645.9344 8.8156374e+08 0.085473120 0.025889397 -27.660799 39.728334 6647.9365 8.4681137e+08 0.084485510 0.026930832 -27.724502 39.638672 6649.9386 8.1013693e+08 0.083655892 0.026339922 -27.791289 39.540455 6651.9407 7.6676595e+08 0.083075689 0.027205051 -27.858077 39.442239 6653.9428 7.2799142e+08 0.082377105 0.028007006 -27.922218 39.351362 6655.9449 6.9700697e+08 0.080585513 0.028000640 -27.985067 39.264073 6657.9470 6.7084086e+08 0.079054783 0.029999573 -28.047915 39.176784 6659.9491 6.4574654e+08 0.077495315 0.031636619 -28.113937 39.077508 6661.9512 6.1600118e+08 0.075893854 0.033019407 -28.180714 38.975378 6663.9533 5.8441584e+08 0.074443368 0.032219034 -28.245548 38.877136 6665.9554 5.5276576e+08 0.074397185 0.026981695 -28.304905 38.789846 6667.9575 5.2996724e+08 0.073500684 0.027455160 -28.364262 38.702556 6669.9596 5.0591433e+08 0.072684349 0.027370134 -28.425009 38.610924 6671.9617 4.8318473e+08 0.072222418 0.026879053 -28.487858 38.512722 6673.9638 4.6072111e+08 0.071365523 0.028900649 -28.550708 38.414520 6675.9659 4.3498798e+08 0.069283906 0.031648412 -28.610587 38.325607 6677.9680 4.1736047e+08 0.068420262 0.030982100 -28.669952 38.238307 6679.9701 4.0414019e+08 0.068637299 0.029466119 -28.729317 38.151006 6681.9722 3.8913448e+08 0.069403937 0.030403222 -28.792126 38.052929 6683.9743 3.7007025e+08 0.069730916 0.032616446 -28.854975 37.954727 6685.9764 3.5139801e+08 0.069371706 0.033736172 -28.916278 37.861356 6687.9785 3.3215378e+08 0.067247278 0.033797171 -28.975636 37.774066 6689.9806 3.1837641e+08 0.065471554 0.033133309 -29.034993 37.686776 6691.9827 3.0698188e+08 0.064518627 0.032769405 -29.096371 37.593171 6693.9848 2.9247317e+08 0.063700513 0.031266233 -29.159220 37.494969 6695.9869 2.8218792e+08 0.063686377 0.029678187 -29.222069 37.396767 6697.9890 2.6929146e+08 0.063027958 0.030216429 -29.284919 37.298565 6699.9911 2.5560058e+08 0.061650060 0.030675899 -29.347768 37.200363 6701.9932 2.4226079e+08 0.060109081 0.032866806 -29.407215 37.107477 6703.9953 2.3048004e+08 0.060545174 0.036165891 -29.463081 37.020188 6705.9974 2.2396249e+08 0.060596477 0.038441857 -29.518947 36.932899 6707.9995 2.1812965e+08 0.060320550 0.040043643 -29.576716 36.838809 6710.0016 2.0986027e+08 0.059298781 0.040496817 -29.635638 36.740606 6712.0038 2.0001621e+08 0.057363696 0.041836922 -29.694864 36.642402 6714.0059 1.8895723e+08 0.055464915 0.047303848 -29.757723 36.544186 6716.0080 1.7969161e+08 0.054022249 0.048413078 -29.820581 36.445969 6718.0101 1.7060998e+08 0.052240210 0.049828080 -29.877862 36.353565 6720.0122 1.6338440e+08 0.051334878 0.050418357 -29.930236 36.266276 6722.0143 1.5673472e+08 0.051613984 0.050587569 -29.982609 36.178987 6724.0164 1.5070051e+08 0.049865569 0.049789985 -30.039356 36.084408 6726.0185 1.4489920e+08 0.046369485 0.040951534 -30.098277 35.986206 6728.0206 1.3933075e+08 0.045932029 0.039657258 -30.157678 35.888004 6730.0227 1.3542897e+08 0.044852879 0.040409993 -30.220527 35.789802 6732.0248 1.2797176e+08 0.043521499 0.043744771 -30.283377 35.691600 6734.0269 1.2295190e+08 0.042778120 0.049351982 -30.343962 35.593397 6736.0290 1.1609952e+08 0.044650489 0.050464580 -30.402883 35.495195 6738.0311 1.0905111e+08 0.046055465 0.057492235 -30.461685 35.396992 6740.0332 1.0492182e+08 0.046021156 0.064107060 -30.516678 35.298790 6742.0353 99235606. 0.044133918 0.068696746 -30.571672 35.200588 6744.0374 94848640. 0.039803663 0.077822336 -30.628570 35.102386 6746.0395 92822965. 0.038851288 0.078528076 -30.687491 35.004183 6748.0416 90415383. 0.035054011 0.067235760 -30.746412 34.905981 6750.0437 88421318. 0.032511009 0.072078756 -30.805342 34.811454 6752.0458 86131918. 0.029925778 0.074081471 -30.864271 34.717165 6754.0479 80074860. 0.029167931 0.076136429 -30.921652 34.621336 6756.0500 74425795. 0.027100037 0.074295595 -30.976645 34.523134 6758.0521 70040845. 0.026865393 0.073815525 -31.031639 34.424932 6760.0542 65325611. 0.027816757 0.076164660 -31.089963 34.326729 6762.0563 62445158. 0.031892128 0.077959997 -31.148885 34.228526 6764.0584 61447842. 0.035194772 0.079486084 -31.206619 34.130324 6766.0605 59490202. 0.037532131 0.079850656 -31.261612 34.032122 6768.0626 56979706. 0.035849050 0.081081375 -31.316605 33.933920 6770.0647 52560183. 0.038767832 0.087036700 -31.371598 33.835717 6772.0668 51524862. 0.029543471 0.091892680 -31.426591 33.737515 6774.0689 54438107. 0.013890425 0.096748659 -31.481584 33.639313