# # 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 = 53.060542 km # Date (UTC) = 2015-12-11T08:39:26.674 # Date (julian) = 2457367.86072540 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6496.2877 6.1292644e+10 0.031268337 0.031163782 126.75722 26.520400 6498.7402 5.8269988e+10 0.039598397 0.031903310 126.81281 26.404922 6501.1926 5.4122125e+10 0.048121732 0.032642838 126.87447 26.272684 6503.6451 4.9565374e+10 0.056873684 0.033382366 126.93702 26.137958 6506.0975 4.5195707e+10 0.065972606 0.034121895 126.99067 26.018486 6508.5499 4.1490505e+10 0.075648479 0.034861423 127.04200 25.903008 6511.0024 3.8376200e+10 0.086071958 0.035600951 127.09527 25.787523 6513.4548 3.5480897e+10 0.097230595 0.036340480 127.15087 25.672030 6515.9073 3.2621064e+10 0.10906382 0.037080008 127.20598 25.556040 6518.3597 2.9870642e+10 0.12160201 0.037819536 127.25730 25.436286 6520.8122 2.7339246e+10 0.13488145 0.038559065 127.30863 25.316531 6523.2646 2.4975371e+10 0.14530007 0.039244697 127.36328 25.200106 6525.7171 2.2881284e+10 0.15225668 0.039700378 127.41888 25.084628 6528.1695 2.1002066e+10 0.15940548 0.041576954 127.47260 24.967267 6530.6220 1.9266552e+10 0.16512345 0.044699418 127.52392 24.847512 6533.0744 1.7668778e+10 0.17068571 0.047551203 127.57525 24.728192 6535.5268 1.6201572e+10 0.17324216 0.047995755 127.62658 24.612699 6537.9793 1.4877428e+10 0.17557128 0.049146915 127.67791 24.497206 6540.4317 1.3666380e+10 0.17598280 0.051058063 127.72923 24.381725 6542.8842 1.2534382e+10 0.17409864 0.051337921 127.78056 24.266248 6545.3366 1.1489618e+10 0.17186162 0.052458583 127.83188 24.150770 6547.7891 1.0546392e+10 0.16944954 0.053587432 127.88320 24.035292 6550.2415 9.7231977e+09 0.16737461 0.055045832 127.93453 23.919437 6552.6940 8.9866766e+09 0.16517851 0.055412098 127.98585 23.799682 6555.1464 8.3139367e+09 0.16288017 0.054730352 128.03718 23.679927 6557.5988 7.6965592e+09 0.16029114 0.053490748 128.08850 23.563369 6560.0513 7.1286359e+09 0.15759373 0.052228063 128.13983 23.447875 6562.5037 6.6288071e+09 0.15443306 0.050400579 128.19116 23.332389 6564.9562 6.1791193e+09 0.15176143 0.048338255 128.24248 23.216912 6567.4086 5.7657190e+09 0.14934286 0.046271683 128.29380 23.101434 6569.8611 5.3962285e+09 0.14744578 0.044908467 128.34513 22.985956 6572.3135 5.0462255e+09 0.14531144 0.044050612 128.39646 22.870479 6574.7660 4.6766086e+09 0.14279952 0.042487116 128.44896 22.744374 6577.2184 4.3033680e+09 0.14009460 0.039877307 128.50189 22.614459 6579.6709 3.9527943e+09 0.13708843 0.036701700 128.55376 22.494040 6582.1233 3.6696055e+09 0.13431110 0.035260242 128.60508 22.378563 6584.5757 3.4539857e+09 0.13139305 0.034201882 128.65504 22.263080 6587.0282 3.2653725e+09 0.12846120 0.033164615 128.70209 22.147587 6589.4806 3.0811433e+09 0.12535538 0.032092446 128.74915 22.032095 6591.9331 2.9095128e+09 0.12153766 0.028149041 128.80039 21.916617 6594.3855 2.7439206e+09 0.11785630 0.025960890 128.85171 21.801139 6596.8380 2.5904793e+09 0.11426363 0.025723464 128.90028 21.685661 6599.2904 2.4464625e+09 0.11217797 0.024947197 128.94733 21.570183 6601.7429 2.3042671e+09 0.11217762 0.027395534 128.99438 21.454700 6604.1953 2.1766211e+09 0.11095738 0.026187241 129.04143 21.339207 6606.6477 2.0505741e+09 0.11050331 0.026339982 129.08848 21.223714 6609.1002 1.9334545e+09 0.10751842 0.023735693 129.13553 21.108236 6611.5526 1.8288657e+09 0.10477256 0.024606036 129.18258 20.992759 6614.0051 1.7284973e+09 0.10381039 0.023936991 129.23636 20.868190 6616.4575 1.6241833e+09 0.10244756 0.023354108 129.29411 20.738275 6618.9100 1.5240001e+09 0.10187019 0.024457933 129.34595 20.616321 6621.3624 1.4340638e+09 0.10107196 0.024969322 129.39299 20.500843 6623.8149 1.3577000e+09 0.099146936 0.024793720 129.44003 20.386278 6626.2673 1.2916707e+09 0.097633223 0.026250329 129.48708 20.275077 6628.7198 1.2242130e+09 0.095860461 0.025995322 129.53412 20.163876 6631.1722 1.1612095e+09 0.093886240 0.025948258 129.57743 20.048919 6633.6246 1.1029733e+09 0.092157709 0.026261309 129.62021 19.933425 6636.0771 1.0508435e+09 0.090206843 0.026519816 129.66528 19.817941 6638.5295 1.0057432e+09 0.088696949 0.025648572 129.71233 19.702464 6640.9820 9.5672281e+08 0.088781113 0.025150505 129.76055 19.585068 6643.4344 9.0181632e+08 0.087864402 0.025258211 129.81348 19.459965 6645.8869 8.4596637e+08 0.086384779 0.025867149 129.86569 19.336026 6648.3393 7.9731803e+08 0.084918948 0.027191422 129.91274 19.220548 6650.7918 7.5817167e+08 0.084045125 0.026436493 129.95979 19.105070 6653.2442 7.2526781e+08 0.083545857 0.027650343 130.00349 18.989581 6655.6966 6.9714962e+08 0.081954473 0.027898073 130.04627 18.874087 6658.1491 6.6528698e+08 0.080426521 0.030325499 130.09356 18.754317 6660.6015 6.3482226e+08 0.078954908 0.032172767 130.14648 18.629214 6663.0540 5.9963482e+08 0.077765350 0.032468253 130.19725 18.507642 6665.5064 5.6262456e+08 0.077411908 0.027717330 130.24430 18.392164 6667.9589 5.3601885e+08 0.076849336 0.027455668 130.29122 18.276809 6670.4113 5.1268790e+08 0.076336659 0.027138075 130.33399 18.165609 6672.8638 4.9664613e+08 0.075972972 0.027380252 130.37677 18.054408 6675.3162 4.8015604e+08 0.074100316 0.030404012 130.42323 17.930283 6677.7687 4.5445792e+08 0.072427173 0.031265497 130.47135 17.800369 6680.2211 4.3107994e+08 0.072696589 0.029489161 130.51881 17.681913 6682.6735 4.0967569e+08 0.073498784 0.030939156 130.56586 17.570712 6685.1260 3.9327487e+08 0.073344170 0.032837912 130.61320 17.455694 6687.5784 3.7863207e+08 0.071100433 0.034020302 130.66132 17.330572 6690.0309 3.5783565e+08 0.068788494 0.033112325 130.70839 17.207342 6692.4833 3.4029441e+08 0.067644874 0.032204074 130.75116 17.091864 6694.9358 3.2406943e+08 0.066916129 0.029949498 130.79393 16.976386 6697.3882 3.0856440e+08 0.066215579 0.030140394 130.84542 16.852650 6699.8407 2.9497551e+08 0.064527147 0.030814745 130.89835 16.727548 6702.2931 2.8384314e+08 0.062805076 0.033110775 130.94335 16.613286 6704.7455 2.7387374e+08 0.063144590 0.036543657 130.98612 16.502085 6707.1980 2.6600909e+08 0.062826237 0.040158464 131.03125 16.382618 6709.6504 2.5152586e+08 0.062080554 0.040718833 131.07937 16.252703 6712.1029 2.3505073e+08 0.059990731 0.042020979 131.12555 16.129583 6714.5553 2.2118910e+08 0.057894614 0.047345158 131.16832 16.018368 6717.0078 2.0813827e+08 0.055851057 0.049873788 131.21124 15.906796 6719.4602 1.9807088e+08 0.053872582 0.050932598 131.25935 15.781694 6721.9127 1.8453359e+08 0.054277916 0.050578889 131.30746 15.656591 6724.3651 1.7161470e+08 0.051438979 0.046877769 131.35558 15.531488 6726.8176 1.6246283e+08 0.048270745 0.040958741 131.40370 15.406386 6729.2700 1.5557692e+08 0.047736560 0.040865466 131.44717 15.293364 6731.7224 1.4959814e+08 0.045755934 0.043187821 131.48993 15.182163 6734.1749 1.4276536e+08 0.044767011 0.049343077 131.53554 15.063581 6736.6273 1.3556982e+08 0.046767701 0.052726678 131.58366 14.938478 6739.0798 1.3274519e+08 0.047645829 0.062924186 131.62960 14.813374 6741.5322 1.2815224e+08 0.045915817 0.067276625 131.67290 14.688272 6743.9847 1.2386279e+08 0.040792506 0.077689989 131.71801 14.563169 6746.4371 1.2095632e+08 0.037897357 0.073905340 131.76613 14.438066 6748.8896 1.1822864e+08 0.035607828 0.071696899 131.81425 14.312958 6751.3420 1.1373169e+08 0.031910675 0.073856272 131.86237 14.187836 6753.7944 1.0444460e+08 0.029513784 0.075548271 131.90839 14.065750 6756.2469 94906406. 0.026766837 0.074802204 131.94689 13.954549 6758.6993 89812296. 0.026735792 0.075184167 131.98538 13.843348 6761.1518 91129673. 0.027647187 0.077980765 132.03234 13.719913 6763.6042 92359262. 0.033086486 0.078277957 132.08045 13.594811 6766.0567 90188794. 0.035257189 0.079841945 132.12857 13.469708 6768.5091 84770554. 0.031298971 0.082687956 132.17669 13.344606 6770.9616 81254625. 0.026562932 0.089211916 132.22133 13.219503 6773.4140 78446379. 0.022170469 0.095160174 132.26463 13.094400 6775.8665 74357432. 0.017778538 0.10110843 132.31104 12.969297 6778.3189 72671714. 0.013378881 0.10705669 132.35916 12.844194 6780.7713 68912647. 0.0089656501 0.11300495 132.40455 12.721818 6783.2238 68190688. 0.0045507737 0.11895320 132.44785 12.601526 6785.6762 64419542. 9.8359885e-05 0.12490146 132.49418 12.470151 6788.1287 60071452. -0.0044144259 0.13084972 132.54367 12.327174 6790.5811 57092247. -0.0089885399 0.13679798 132.59224 12.196173 6793.0336 52947192. -0.013737225 0.14274623 132.64036 12.071071 6795.4860 53176617. -0.018604667 0.14869449 132.68563 11.948805 6797.9385 50505981. -0.024703182 0.15464275 132.72894 11.828496 6800.3909 48140191. -0.038881579 0.16059101 132.77225 11.705724 6802.8433 46514974. -0.035393110 0.16653926 132.81555 11.580621 6805.2958 44199814. -0.021477960 0.17248752 132.86395 11.447733