# # 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 = 45.738511 km # Date (UTC) = 2012-01-20T10:05:37.253 # Date (julian) = 2455946.92057006 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6499.8876 1.7729232e+11 0.046759736 0.032249303 -32.965116 50.396876 6501.9942 1.5137038e+11 0.055009790 0.032884554 -33.094396 50.256905 6504.1008 1.2864496e+11 0.063342823 0.033519804 -33.226663 50.113615 6506.2075 1.0961298e+11 0.071839585 0.034155055 -33.345114 49.985677 6508.3141 9.4787626e+10 0.080672493 0.034790305 -33.463208 49.858135 6510.4207 8.2452417e+10 0.089832179 0.035425556 -33.593461 49.712356 6512.5274 7.1363295e+10 0.099238178 0.036060806 -33.724707 49.564680 6514.6340 6.2543708e+10 0.10916681 0.036696057 -33.833353 49.441864 6516.7406 5.5595321e+10 0.11968529 0.037331307 -33.941998 49.319047 6518.8473 4.9748953e+10 0.13070643 0.037966558 -34.072526 49.172159 6520.9539 4.4323140e+10 0.14207614 0.038601808 -34.202151 49.025735 6523.0606 3.9399901e+10 0.15086894 0.039194121 -34.310797 48.898194 6525.1672 3.5595498e+10 0.15761341 0.039763134 -34.419443 48.770653 6527.2738 3.2787562e+10 0.16327952 0.040915272 -34.528090 48.643112 6529.3805 3.0224937e+10 0.16782401 0.042841829 -34.636737 48.515571 6531.4871 2.7594103e+10 0.17190169 0.045937658 -34.756423 48.369390 6533.5937 2.5067209e+10 0.17503236 0.047771907 -34.876553 48.222254 6535.7004 2.2756670e+10 0.17584513 0.047920479 -34.980476 48.099438 6537.8070 2.0943924e+10 0.17706920 0.049065694 -35.084398 47.976621 6539.9136 1.9604456e+10 0.17699641 0.050749570 -35.188321 47.849335 6542.0203 1.8361839e+10 0.17453294 0.051009937 -35.292244 47.721793 6544.1269 1.7029313e+10 0.17209055 0.051747304 -35.410529 47.576624 6546.2336 1.5676464e+10 0.16988639 0.052656701 -35.531441 47.428143 6548.3402 1.4376431e+10 0.16835364 0.053769238 -35.630651 47.300592 6550.4468 1.3270580e+10 0.16680627 0.055097240 -35.729850 47.173051 6552.5535 1.2377366e+10 0.16523432 0.055447461 -35.829049 47.045510 6554.6601 1.1542359e+10 0.16323258 0.054846232 -35.928247 46.917969 6556.7667 1.0820155e+10 0.16106299 0.053900402 -36.027445 46.790428 6558.8734 1.0181668e+10 0.15843925 0.052495088 -36.126643 46.662887 6560.9800 9.5153513e+09 0.15569020 0.051390710 -36.236817 46.521234 6563.0866 8.8362846e+09 0.15349674 0.049828145 -36.352551 46.372432 6565.1933 8.1671326e+09 0.15125693 0.048098931 -36.450231 46.245698 6567.2999 7.5757786e+09 0.14916700 0.046363605 -36.544706 46.122881 6569.4065 7.0943691e+09 0.14710528 0.044878884 -36.639182 45.996605 6571.5132 6.6646571e+09 0.14524403 0.044363115 -36.733657 45.869064 6573.6198 6.2668315e+09 0.14272708 0.043160092 -36.828132 45.741523 6575.7265 5.9006112e+09 0.14006780 0.041645845 -36.922607 45.613981 6577.8331 5.5557872e+09 0.13714862 0.038911788 -37.014728 45.486440 6579.9397 5.2377914e+09 0.13396888 0.036553888 -37.104478 45.358899 6582.0464 4.9385850e+09 0.13074156 0.035281178 -37.196030 45.231358 6584.1530 4.6561869e+09 0.12760059 0.034432167 -37.290505 45.103817 6586.2596 4.3949365e+09 0.12491661 0.033167940 -37.383731 44.976277 6588.3663 4.1628923e+09 0.12295127 0.033257613 -37.473481 44.848737 6590.4729 3.9296795e+09 0.12069838 0.030182386 -37.565438 44.718063 6592.5795 3.6811735e+09 0.11860011 0.027510613 -37.670152 44.569260 6594.6862 3.4324828e+09 0.11643832 0.025795844 -37.768310 44.427537 6596.7928 3.2044444e+09 0.11400243 0.025723669 -37.853336 44.299996 6598.8995 3.0174680e+09 0.11214279 0.024977736 -37.939382 44.172455 6601.0061 2.8498760e+09 0.11207306 0.027048556 -38.029135 44.044914 6603.1127 2.6972494e+09 0.11098560 0.026596542 -38.118419 43.917372 6605.2194 2.5478338e+09 0.11018326 0.026849068 -38.203446 43.789831 6607.3260 2.4136869e+09 0.10854069 0.025063278 -38.288474 43.662291 6609.4326 2.2834738e+09 0.10541694 0.023834443 -38.373501 43.534750 6611.5393 2.1591198e+09 0.10262013 0.024614563 -38.458528 43.407209 6613.6459 2.0497498e+09 0.10139566 0.023810573 -38.543556 43.279667 6615.7525 1.9369460e+09 0.099709295 0.023274685 -38.628584 43.152126 6617.8592 1.8335774e+09 0.098688543 0.023724106 -38.713611 43.024585 6619.9658 1.7250938e+09 0.097787165 0.024758948 -38.798638 42.897044 6622.0724 1.6278146e+09 0.096252477 0.024738710 -38.880684 42.769504 6624.1791 1.5479208e+09 0.094044913 0.024958172 -38.960987 42.641964 6626.2857 1.4657121e+09 0.092383570 0.026226872 -39.041289 42.514424 6628.3924 1.3929662e+09 0.090429970 0.025862395 -39.121592 42.386883 6630.4990 1.3155929e+09 0.088630361 0.025929531 -39.201890 42.259351 6632.6056 1.2431907e+09 0.087053224 0.026104965 -39.282180 42.131831 6634.7123 1.1771790e+09 0.085754369 0.026378799 -39.362474 42.004306 6636.8189 1.1092661e+09 0.084602983 0.026231741 -39.442777 41.876765 6638.9255 1.0505223e+09 0.083820042 0.025631319 -39.523080 41.749993 6641.0322 9.9714327e+08 0.084703540 0.025148410 -39.603385 41.627175 6643.1388 9.4935201e+08 0.084436087 0.025213576 -39.683690 41.504139 6645.2454 8.9938443e+08 0.083640261 0.025566665 -39.763992 41.376600 6647.3521 8.5282236e+08 0.082687163 0.026623151 -39.844295 41.249061 6649.4587 8.0959875e+08 0.081822816 0.027001372 -39.920210 41.121520 6651.5654 7.6907984e+08 0.081486913 0.026917425 -39.995789 40.993979 6653.6720 7.2838751e+08 0.081030750 0.027868754 -40.071369 40.866438 6655.7786 6.8751826e+08 0.079520170 0.027931944 -40.146949 40.738897 6657.8853 6.5103649e+08 0.078104810 0.029927982 -40.222530 40.611356 6659.9919 6.1768133e+08 0.076735707 0.031627688 -40.298111 40.483815 6662.0985 5.8732508e+08 0.075242427 0.032988990 -40.373692 40.356273 6664.2052 5.5589476e+08 0.074031448 0.031455394 -40.449272 40.228732 6666.3118 5.2429550e+08 0.074026726 0.026969354 -40.524852 40.101190 6668.4184 4.9416121e+08 0.073073210 0.027841062 -40.600431 39.973649 6670.5251 4.6942420e+08 0.072712933 0.027085374 -40.674385 39.846108 6672.6317 4.4300482e+08 0.072322735 0.027245750 -40.745240 39.718567 6674.7383 4.1786370e+08 0.070951850 0.029577634 -40.816095 39.591026 6676.8450 3.9390181e+08 0.068674760 0.032258310 -40.886952 39.463485 6678.9516 3.7866544e+08 0.067852614 0.030300131 -40.958329 39.335945 6681.0583 3.6603896e+08 0.068836744 0.029702050 -41.033909 39.208405 6683.1649 3.5283768e+08 0.069424694 0.031430229 -41.109488 39.080866 6685.2715 3.3543815e+08 0.069266634 0.032991636 -41.180376 38.953324 6687.3782 3.1683852e+08 0.067464255 0.034131995 -41.251231 38.825783 6689.4848 3.0220562e+08 0.065109849 0.033579628 -41.322088 38.702380 6691.5914 2.8739428e+08 0.064174252 0.032861723 -41.392944 38.579562 6693.6981 2.7269057e+08 0.063262389 0.031364608 -41.460214 38.453158 6695.8047 2.5789899e+08 0.063019574 0.029711659 -41.526345 38.325617 6697.9113 2.4882364e+08 0.062180895 0.030206597 -41.595512 38.198076 6700.0180 2.3876472e+08 0.060541349 0.030681053 -41.666369 38.070535 6702.1246 2.3193219e+08 0.058808237 0.032976235 -41.740535 37.931826 6704.2312 2.2383082e+08 0.058986558 0.036291109 -41.817691 37.783026 6706.3379 2.1489034e+08 0.058713169 0.039034468 -41.890369 37.649338 6708.4445 2.0861641e+08 0.058079992 0.040527646 -41.961226 37.521797 6710.5512 1.9814290e+08 0.056471913 0.040604377 -42.029277 37.397060 6712.6578 1.8723840e+08 0.054256658 0.043051262 -42.095409 37.274242 6714.7644 1.7657980e+08 0.052036643 0.047360878 -42.161542 37.149171 6716.8711 1.6555035e+08 0.049838728 0.049684360 -42.227674 37.021630 6718.9777 1.6149001e+08 0.047281855 0.051335110 -42.293806 36.894089 6721.0843 1.5769352e+08 0.047529113 0.050329310 -42.359937 36.766548 6723.1910 1.5466697e+08 0.046185195 0.049475453 -42.426069 36.639007 6725.2976 1.5020332e+08 0.041897582 0.041390118 -42.492201 36.511468 6727.4042 1.4083911e+08 0.040397270 0.040421816 -42.557738 36.383929 6729.5109 1.3165168e+08 0.039475279 0.040704912 -42.619147 36.256388 6731.6175 1.2272459e+08 0.037572623 0.042978998 -42.680601 36.128892 6733.7242 1.1814585e+08 0.036440109 0.047855947 -42.746731 36.006071 6735.8308 1.1202384e+08 0.037646961 0.050175376 -42.812864 35.883252 6737.9374 1.0893875e+08 0.038971442 0.057121757 -42.874782 35.756220 6740.0441 1.0536253e+08 0.038803879 0.064125633 -42.936191 35.628679 6742.1507 1.0111540e+08 0.036461976 0.068977953 -43.005535 35.484660 6744.2573 1.0097997e+08 0.032227117 0.077992453 -43.077181 35.335860 6746.3640 93683334. 0.029698656 0.074755730 -43.143530 35.212019 6748.4706 90189462. 0.027154045 0.069492769 -43.209662 35.089201 6750.5772 85824474. 0.024296035 0.072989794 -43.271808 34.962399 6752.6839 82351971. 0.021477966 0.073343103 -43.333215 34.834858 6754.7905 84189105. 0.020182688 0.074942227 -43.391185 34.707332 6756.8971 80255879. 0.017266493 0.076475406 -43.447862 34.579812 6759.0038 78915222. 0.018020260 0.075820868 -43.507421 34.455158 6761.1104 74658555. 0.018128892 0.077977348 -43.568828 34.332342 6763.2171 68875420. 0.022128707 0.077098816 -43.635277 34.196730 6765.3237 65428341. 0.023040087 0.079590284 -43.706923 34.047928 6767.4303 59228242. 0.019129984 0.081493909 -43.771629 33.913539 6769.5370 57967704. 0.011067039 0.085756637 -43.833038 33.785998 6771.6436 56214659. -0.00059092900 0.090866155 -43.891797 33.661108 6773.7502 56894295. -0.047232015 0.095975674 -43.948481 33.538291 6775.8569 58060507. -0.013519281 0.10108519 -44.005165 33.413378 6777.9635 55711641. 0.058798064 0.10619471 -44.061850 33.285837