# # 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 = 61.724688 km # Date (UTC) = 2014-12-08T10:47:05.117 # Date (julian) = 2456999.94936478 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6501.2453 6.5357737e+10 0.050034803 0.032658719 94.427389 27.188694 6503.8468 5.9590197e+10 0.060264490 0.033443197 94.486373 27.061654 6506.4483 5.4464376e+10 0.070826783 0.034227675 94.545355 26.934621 6509.0498 4.9474310e+10 0.081698378 0.035012152 94.607378 26.803141 6511.6513 4.4694305e+10 0.092899778 0.035796630 94.673730 26.665330 6514.2528 4.0152123e+10 0.10444498 0.036581107 94.734683 26.532405 6516.8543 3.6128307e+10 0.11644935 0.037365585 94.789127 26.405371 6519.4558 3.2786826e+10 0.12904693 0.038150063 94.844704 26.279464 6522.0573 2.9940454e+10 0.14209501 0.038932265 94.903690 26.156952 6524.6588 2.7351234e+10 0.14893295 0.039661017 94.962470 26.034235 6527.2603 2.4968580e+10 0.15448132 0.040905487 95.016915 25.907201 6529.8619 2.2847483e+10 0.15923493 0.043608646 95.071359 25.780167 6532.4634 2.0902493e+10 0.16300260 0.047071283 95.129618 25.656950 6535.0649 1.9116686e+10 0.16540158 0.048196156 95.188596 25.534453 6537.6664 1.7532168e+10 0.16676017 0.048999393 95.244686 25.411956 6540.2679 1.6086228e+10 0.16829107 0.050980658 95.299130 25.289459 6542.8694 1.4703793e+10 0.16800282 0.051332308 95.356520 25.158122 6545.4709 1.3346029e+10 0.16754441 0.052459786 95.417766 25.015208 6548.0724 1.2068962e+10 0.16659585 0.053689269 95.475794 24.881959 6550.6739 1.0968585e+10 0.16487521 0.055154102 95.530245 24.759446 6553.2754 1.0038604e+10 0.16293987 0.055196616 95.584695 24.636937 6555.8769 9.2516169e+09 0.16016088 0.054116535 95.639139 24.514440 6558.4784 8.5268404e+09 0.15785767 0.052831618 95.693583 24.391645 6561.0799 7.8777193e+09 0.15470818 0.051333287 95.748024 24.264612 6563.6815 7.3124306e+09 0.15203097 0.049140086 95.802464 24.137579 6566.2830 6.8032336e+09 0.14977585 0.047022816 95.856908 24.014454 6568.8845 6.3587340e+09 0.14800584 0.044958629 95.911352 23.891958 6571.4860 5.9137942e+09 0.14679940 0.044370547 95.970278 23.759379 6574.0875 5.4768723e+09 0.14474020 0.042812990 96.031537 23.621547 6576.6890 5.0560180e+09 0.14289995 0.040578356 96.084866 23.494428 6579.2905 4.6796666e+09 0.14034105 0.036910800 96.134772 23.371931 6581.8920 4.3782625e+09 0.13826437 0.035326499 96.186921 23.249434 6584.4935 4.1036428e+09 0.13613426 0.034246679 96.241361 23.126938 6587.0950 3.8681022e+09 0.13405794 0.033179421 96.294486 23.004442 6589.6965 3.6464966e+09 0.13179330 0.031664140 96.344392 22.881945 6592.2980 3.4414733e+09 0.12881123 0.027784049 96.394690 22.759447 6594.8995 3.2665711e+09 0.12570071 0.025678721 96.449141 22.636934 6597.5010 3.0912088e+09 0.12230909 0.025564617 96.503593 22.514421 6600.1026 2.9141039e+09 0.12066287 0.025200702 96.559539 22.378410 6602.7041 2.7345713e+09 0.11910196 0.026915818 96.615685 22.240599 6605.3056 2.5586985e+09 0.11756586 0.026921389 96.666071 22.116924 6607.9071 2.4080132e+09 0.11513078 0.023915867 96.715977 21.994428 6610.5086 2.2824360e+09 0.11154805 0.024488916 96.769143 21.871931 6613.1101 2.1678185e+09 0.11025055 0.023613982 96.823584 21.749435 6615.7116 2.0672613e+09 0.10896353 0.023273425 96.875690 21.626939 6618.3131 1.9711097e+09 0.10842409 0.024007225 96.925597 21.504442 6620.9146 1.8791672e+09 0.10778030 0.025061929 96.977444 21.377181 6623.5161 1.7786166e+09 0.10623211 0.024683039 97.033598 21.239349 6626.1176 1.6747430e+09 0.10502550 0.026441041 97.087554 21.106911 6628.7191 1.5804358e+09 0.10341161 0.025995069 97.137460 20.984415 6631.3206 1.5013726e+09 0.10163467 0.025963336 97.187367 20.861918 6633.9221 1.4412098e+09 0.099912166 0.026313250 97.237273 20.739423 6636.5237 1.3825083e+09 0.098161346 0.026346397 97.287179 20.616927 6639.1252 1.3140145e+09 0.096955576 0.025583340 97.342972 20.479981 6641.7267 1.2383001e+09 0.097568434 0.025150768 97.399118 20.342169 6644.3282 1.1650599e+09 0.096464739 0.025379075 97.444656 20.223897 6646.9297 1.1037070e+09 0.095078933 0.026401381 97.490024 20.105937 6649.5312 1.0605481e+09 0.093604910 0.026901470 97.538938 19.984426 6652.1327 1.0227618e+09 0.092668961 0.027287031 97.588851 19.861913 6654.7342 9.7896732e+08 0.091236919 0.027723448 97.642355 19.730584 6657.3357 9.2809054e+08 0.088758373 0.029290524 97.698501 19.592774 6659.9372 8.7686654e+08 0.086770437 0.031639094 97.747996 19.467213 6662.5387 8.3517871e+08 0.084696547 0.032742015 97.793365 19.349252 6665.1402 7.9984988e+08 0.083586889 0.028317356 97.843183 19.223095 6667.7417 7.6344543e+08 0.082827224 0.027375911 97.899329 19.085284 6670.3432 7.2435493e+08 0.082239727 0.027169612 97.950585 18.954422 6672.9448 6.8729793e+08 0.082004593 0.027427195 97.995953 18.831925 6675.5463 6.5831416e+08 0.079919565 0.030844647 98.042456 18.710557 6678.1478 6.3284202e+08 0.078361959 0.030837780 98.092368 18.592581 6680.7493 6.1040750e+08 0.078822718 0.029603216 98.142333 18.473699 6683.3508 5.8215159e+08 0.079453564 0.031702656 98.193373 18.335888 6685.9523 5.5481460e+08 0.078889188 0.033710690 98.243923 18.199794 6688.5538 5.2939930e+08 0.075665116 0.033913026 98.289291 18.081835 6691.1553 5.0584548e+08 0.074000663 0.032964621 98.334660 17.963876 6693.7568 4.8805333e+08 0.072668642 0.031344456 98.389538 17.828400 6696.3583 4.6893050e+08 0.072158773 0.029824660 98.445683 17.690589 6698.9598 4.4459169e+08 0.070652134 0.031535288 98.497119 17.557490 6701.5613 4.1779080e+08 0.068500551 0.032233081 98.548163 17.424783 6704.1628 3.9714775e+08 0.068449407 0.036257516 98.593736 17.306292 6706.7643 3.8038672e+08 0.068060520 0.039776691 98.639105 17.188332 6709.3659 3.6527909e+08 0.067022197 0.040899842 98.688789 17.055273 6711.9674 3.5064229e+08 0.064421564 0.041792825 98.739837 16.917440 6714.5689 3.3361288e+08 0.061801585 0.047346176 98.786336 16.795524 6717.1704 3.2128650e+08 0.059174277 0.049863730 98.831704 16.677564 6719.7719 3.1186681e+08 0.057004740 0.050636494 98.880458 16.550805 6722.3734 2.9821206e+08 0.056684066 0.050143596 98.931498 16.418099 6724.9749 2.8677118e+08 0.052081042 0.041785640 98.982541 16.285392 6727.5764 2.7415034e+08 0.050462234 0.040192450 99.033585 16.152686 6730.1779 2.5884497e+08 0.049132316 0.040622842 99.084626 16.016516 6732.7794 2.4682931e+08 0.047452923 0.043883698 99.135667 15.878705 6735.3809 2.3533267e+08 0.047757683 0.049697814 99.182628 15.755170 6737.9824 2.2937386e+08 0.049408365 0.057265133 99.227997 15.637210 6740.5839 2.2393517e+08 0.048700491 0.065047925 99.276290 15.511644 6743.1854 2.1412861e+08 0.044498756 0.072298469 99.327338 15.378918 6745.7870 2.0119553e+08 0.041496001 0.078897716 99.375545 15.246202 6748.3885 1.8664709e+08 0.037219506 0.069060615 99.421484 15.113496 6750.9900 1.7930925e+08 0.034200293 0.073694544 99.470468 14.980789 6753.5915 1.7574831e+08 0.030936203 0.074891417 99.521508 14.848083 6756.1930 1.7264374e+08 0.027949851 0.074663486 99.572548 14.715375 6758.7945 1.6713825e+08 0.027738674 0.075385380 99.623589 14.582668 6761.3960 1.5877386e+08 0.029347429 0.078000942 99.671168 14.449961 6763.9975 1.5127309e+08 0.034241136 0.079475690 99.717107 14.317254 6766.5990 1.4299738e+08 0.035269926 0.081068726 99.766715 14.184547 6769.2005 1.3416180e+08 0.029877606 0.084940611 99.817756 14.051841 6771.8020 1.2790216e+08 0.025020268 0.091250410 99.864916 13.919134 6774.4035 1.2372588e+08 0.020205886 0.097560209 99.910851 13.786428 6777.0050 1.2126443e+08 0.015444455 0.10387001 99.960874 13.653720 6779.6065 1.1659272e+08 0.010688694 0.11017981 100.01192 13.521012 6782.2081 1.1005666e+08 0.0059446066 0.11648960 100.05866 13.388306 6784.8096 1.0455318e+08 0.0012740169 0.12279940 100.10460 13.255599 6787.4111 99817854. -0.0033413939 0.12910920 100.15505 13.122874 6790.0126 95623303. -0.0079252318 0.13541900 100.20610 12.990148 6792.6141 94506556. -0.012406328 0.14172880 100.25243 12.862153 6795.2156 92616502. -0.016896486 0.14803860 100.29836 12.734551 6797.8171 90224744. -0.021388904 0.15434840 100.34430 12.602026 6800.4186 87221257. -0.025889196 0.16065820 100.39027 12.469223 6803.0201 83529762. -0.030406006 0.16696800 100.44277 12.317554 6805.6216 81123609. -0.034875731 0.17327779 100.49485 12.171400 6808.2231 77942155. -0.039367876 0.17958759 100.54589 12.038693 6810.8246 75887669. -0.043829963 0.18589739 100.59524 11.907679 6813.4261 73178443. -0.048322264 0.19220719 100.64117 11.780077 6816.0277 73390712. -0.052740092 0.19851699 100.68955 11.643511 6818.6292 69947021. -0.057291594 0.20482679 100.74206 11.491843 6821.2307 64825758. -0.061935958 0.21113659 100.79024 11.352655 6823.8322 61656507. -0.066562706 0.21744639 100.83617 11.219948 6826.4337 57604992. -0.071294918 0.22375618 100.88670 11.078065 6829.0352 56090824. -0.075998243 0.23006598 100.93920 10.932230 6831.6367 53860646. -0.080859008 0.23637578 100.98524 10.799322 6834.2382 53204427. -0.085784517 0.24268558 101.03134 10.666280 6836.8397 52388192. -0.090914921 0.24899538 101.08384 10.520446 6839.4412 54145935. -0.096114710 0.25530518 101.13430 10.378697 6842.0427 53246379. -0.10201080 0.26161498 101.18023 10.245990 6844.6442 48144923. -0.10956426 0.26792478 101.22848 10.108662 6847.2457 44420456. -0.12047459 0.27423457 101.28098 9.9628272 6849.8472 40602243. -0.16006734 0.28054437 101.33348 9.8132715 6852.4488 41111150. -0.13786835 0.28685417 101.38598 9.6616023 6855.0503 43771245. -0.085810939 0.29316397 101.43849 9.5153213