# # 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 = 61.918239 km # Date (UTC) = 2013-12-12T10:24:26.898 # Date (julian) = 2456638.93364466 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.1315 5.2212970e+10 0.033435198 0.031418222 99.135203 29.250686 6499.5369 4.7088372e+10 0.041630550 0.032143554 99.193938 29.137410 6501.9422 4.2456177e+10 0.049990762 0.032868886 99.252674 29.024134 6504.3476 3.8590665e+10 0.058673827 0.033594218 99.307730 28.910870 6506.7530 3.5350996e+10 0.067797919 0.034319550 99.362262 28.797609 6509.1583 3.2489116e+10 0.077443579 0.035044883 99.418856 28.682287 6511.5637 2.9799976e+10 0.087624944 0.035770215 99.477583 28.564831 6513.9691 2.7352651e+10 0.098438015 0.036495547 99.535860 28.447826 6516.3744 2.5160539e+10 0.10992555 0.037220879 99.590396 28.334565 6518.7798 2.3207848e+10 0.12214109 0.037946211 99.644931 28.221304 6521.1852 2.1488422e+10 0.13511812 0.038671544 99.699469 28.108033 6523.5905 1.9982008e+10 0.14430569 0.039325478 99.754008 27.994756 6525.9959 1.8632949e+10 0.15057472 0.039668553 99.808545 27.881485 6528.4013 1.7387081e+10 0.15783170 0.041760820 99.863077 27.768224 6530.8066 1.6138940e+10 0.16312302 0.044957990 99.917609 27.654963 6533.2120 1.4804870e+10 0.16847501 0.047609688 99.978663 27.523650 6535.6174 1.3488501e+10 0.17071147 0.047956478 100.04002 27.391511 6538.0228 1.2271361e+10 0.17333776 0.049167759 100.09566 27.275177 6540.4281 1.1283658e+10 0.17428260 0.051056356 100.15019 27.161915 6542.8335 1.0508716e+10 0.17300455 0.051318676 100.20473 27.048647 6545.2389 9.8262496e+09 0.17137051 0.052457707 100.25926 26.935371 6547.6442 9.1936502e+09 0.16913314 0.053532350 100.31380 26.822096 6550.0496 8.5846472e+09 0.16736497 0.054997776 100.36834 26.708835 6552.4550 8.0014532e+09 0.16531050 0.055472254 100.42287 26.595573 6554.8603 7.4718708e+09 0.16324854 0.054850434 100.47453 26.482313 6557.2657 6.9918570e+09 0.16093886 0.053699571 100.52486 26.369052 6559.6711 6.5558863e+09 0.15838883 0.052311437 100.57647 26.255792 6562.0764 6.1511192e+09 0.15571386 0.050807180 100.63100 26.142530 6564.4818 5.7836810e+09 0.15299815 0.048553248 100.68554 26.029269 6566.8872 5.4458460e+09 0.15106988 0.046681020 100.73623 25.915994 6569.2925 5.1290555e+09 0.14922311 0.044871464 100.78657 25.802718 6571.6979 4.8324141e+09 0.14783910 0.044312666 100.83915 25.689450 6574.1033 4.5420682e+09 0.14554184 0.042805408 100.89369 25.576189 6576.5086 4.2727697e+09 0.14339934 0.040785947 100.94759 25.462928 6578.9140 4.0191867e+09 0.14051823 0.037206302 100.99793 25.349666 6581.3194 3.7982161e+09 0.13803454 0.035499900 101.04826 25.236405 6583.7247 3.6051392e+09 0.13558077 0.034654838 101.09860 25.123144 6586.1301 3.4317964e+09 0.13285575 0.033169614 101.14894 25.009884 6588.5355 3.2636596e+09 0.13047949 0.033201109 101.20169 24.891200 6590.9408 3.0698389e+09 0.12717830 0.029311961 101.25832 24.763779 6593.3462 2.8814173e+09 0.12424897 0.026780355 101.31329 24.641200 6595.7516 2.7112807e+09 0.12095231 0.025701511 101.36364 24.532120 6598.1569 2.5662517e+09 0.11872259 0.025332236 101.41398 24.423039 6600.5623 2.4454219e+09 0.11836133 0.026145876 101.46432 24.310278 6602.9677 2.3258595e+09 0.11779756 0.026690858 101.51466 24.197016 6605.3730 2.2135951e+09 0.11732220 0.026977996 101.56500 24.083755 6607.7784 2.1083408e+09 0.11569472 0.024169928 101.61534 23.970495 6610.1838 2.0108324e+09 0.11271382 0.024178574 101.66568 23.857235 6612.5891 1.9186792e+09 0.11089606 0.023880565 101.71601 23.743973 6614.9945 1.8354678e+09 0.10988402 0.023255312 101.76635 23.630712 6617.3999 1.7550656e+09 0.10868280 0.023571828 101.81669 23.520498 6619.8052 1.6793613e+09 0.10809766 0.024720207 101.86704 23.411417 6622.2106 1.6030622e+09 0.10685414 0.024701934 101.91793 23.296004 6624.6160 1.5189293e+09 0.10519717 0.025192042 101.96984 23.168582 6627.0214 1.4383090e+09 0.10319039 0.025325058 102.02139 23.044366 6629.4267 1.3628517e+09 0.10205771 0.026031953 102.07173 22.931105 6631.8321 1.2973312e+09 0.10014047 0.026015289 102.12207 22.817844 6634.2375 1.2408472e+09 0.098410018 0.026344164 102.16887 22.708118 6636.6428 1.1844521e+09 0.096661552 0.026300119 102.21501 22.599052 6639.0482 1.1359003e+09 0.095211765 0.025610851 102.26309 22.488056 6641.4536 1.0887958e+09 0.095559470 0.025149841 102.31343 22.374779 6643.8589 1.0486246e+09 0.094212057 0.025322305 102.36346 22.261818 6646.2643 1.0083150e+09 0.092723896 0.026056953 102.40961 22.152752 6648.6697 9.6955094e+08 0.091242956 0.027412556 102.45575 22.043686 6651.0750 9.3255029e+08 0.090656928 0.026541662 102.50588 21.921934 6653.4804 8.8714521e+08 0.090341782 0.027770933 102.55779 21.794513 6655.8858 8.4805583e+08 0.088765725 0.027976215 102.60640 21.677594 6658.2911 8.0940653e+08 0.087302969 0.030577402 102.65255 21.568528 6660.6965 7.7705301e+08 0.085838934 0.032259080 102.69948 21.458672 6663.1019 7.4916086e+08 0.084533629 0.032454984 102.74982 21.345410 6665.5072 7.2322508e+08 0.084002893 0.027716013 102.80015 21.232149 6667.9126 6.9861444e+08 0.083316310 0.027438671 102.85176 21.111279 6670.3180 6.6502449e+08 0.082792727 0.027181324 102.90368 20.988560 6672.7233 6.3411393e+08 0.082497050 0.027298857 102.95164 20.872328 6675.1287 6.0676839e+08 0.080853952 0.030044869 102.99779 20.759067 6677.5341 5.8307005e+08 0.078824141 0.031598982 103.04425 20.642955 6679.9394 5.6154037e+08 0.078808930 0.029491463 103.09144 20.520254 6682.3448 5.3541621e+08 0.079575862 0.030687987 103.13844 20.400047 6684.7502 5.0957905e+08 0.079588101 0.032692160 103.18458 20.290980 6687.1555 4.9039894e+08 0.077671973 0.034256154 103.23073 20.181913 6689.5609 4.7517071e+08 0.074810160 0.033511118 103.27687 20.069495 6691.9663 4.5916573e+08 0.073497798 0.032773286 103.32301 19.956234 6694.3716 4.4429304e+08 0.072387885 0.030740150 103.37156 19.839046 6696.7770 4.2702655e+08 0.071821823 0.029998617 103.42348 19.716326 6699.1824 4.0787384e+08 0.070264914 0.031422150 103.47244 19.597655 6701.5877 3.9347221e+08 0.068183216 0.032271835 103.51439 19.488590 6703.9931 3.7841290e+08 0.068231364 0.036160319 103.55633 19.379525 6706.3985 3.6407831e+08 0.068177277 0.039139928 103.60738 19.258014 6708.8038 3.5045412e+08 0.067617508 0.040918940 103.65929 19.135313 6711.2092 3.3516330e+08 0.065758028 0.040930262 103.70329 19.023433 6713.6146 3.2424615e+08 0.063349436 0.045909438 103.74524 18.914366 6716.0200 3.1481720e+08 0.061223899 0.048430745 103.79127 18.799712 6718.4253 3.0533138e+08 0.058634440 0.050474815 103.84319 18.677010 6720.8307 2.9462340e+08 0.058204966 0.050323517 103.89373 18.552936 6723.2361 2.8035901e+08 0.056930527 0.049500595 103.94092 18.425515 6725.6414 2.6725329e+08 0.052438286 0.041175355 103.98794 18.301247 6728.0468 2.5488663e+08 0.051302094 0.039694414 104.03408 18.192167 6730.4522 2.4297854e+08 0.049523387 0.040998863 104.08023 18.083086 6732.8575 2.3447180e+08 0.047783054 0.043898076 104.12720 17.963267 6735.2629 2.2836380e+08 0.047717012 0.049572510 104.17440 17.840565 6737.6683 2.2235995e+08 0.049055610 0.056264319 104.22159 17.717864 6740.0736 2.1500010e+08 0.048647462 0.064176139 104.26878 17.595163 6742.4790 2.0641527e+08 0.045310407 0.069777909 104.31309 17.479967 6744.8844 2.0066626e+08 0.040749993 0.078477443 104.35504 17.370901 6747.2897 1.9345978e+08 0.035706527 0.067261419 104.39865 17.260350 6749.6951 1.8656280e+08 0.033604197 0.072087615 104.45056 17.142368 6752.1005 1.8006961e+08 0.029645167 0.074018221 104.50225 17.024161 6754.5058 1.6916314e+08 0.027746180 0.075400031 104.54944 16.901459 6756.9112 1.6234877e+08 0.024368257 0.076511558 104.59663 16.778757 6759.3166 1.5777361e+08 0.025027760 0.075896347 104.64382 16.656055 6761.7219 1.5442116e+08 0.027517908 0.078027871 104.69101 16.533354 6764.1273 1.5228728e+08 0.031284578 0.079489384 104.73822 16.410638 6766.5327 1.4558535e+08 0.032042926 0.080918655 104.78542 16.287918 6768.9380 1.3716868e+08 0.026873042 0.084231302 104.83261 16.165211 6771.3434 1.3042495e+08 0.022095874 0.090138046 104.87981 16.042509 6773.7488 1.2657932e+08 0.017486722 0.095972120 104.92160 15.927608 6776.1541 1.2095146e+08 0.012816999 0.10180619 104.95935 15.818542 6778.5595 1.1642551e+08 0.0082143683 0.10764027 104.99888 15.707798 6780.9649 1.1348486e+08 0.0037221319 0.11347434 105.04607 15.589815 6783.3702 1.1052920e+08 -0.00074420175 0.11930842 105.09373 15.470292 6785.7756 1.0943349e+08 -0.0050624524 0.12514249 105.14767 15.330060 6788.1810 1.0468272e+08 -0.0095940556 0.13097656 105.20016 15.193599 6790.5863 98939000. -0.014196540 0.13681064 105.24735 15.070898 6792.9917 93300150. -0.018806680 0.14264471 105.29409 14.948650 6795.3971 90581430. -0.023173128 0.14847879 105.33656 14.830668 6797.8024 87431787. -0.027575884 0.15431286 105.37903 14.712686 6800.2078 81343695. -0.032297965 0.16014693 105.42612 14.590092 6802.6132 76424790. -0.036970794 0.16598101 105.47331 14.467391 6805.0186 70562831. -0.041861350 0.17181508 105.52051 14.348739 6807.4239 68478650. -0.046310561 0.17764915 105.56770 14.230756 6809.8293 69704364. -0.050336990 0.18348323 105.61141 14.109271 6812.2347 69039473. -0.054744367 0.18931730 105.65388 13.986552 6814.6400 68295935. -0.059325167 0.19515138 105.70347 13.856310 6817.0454 65672781. -0.064478953 0.20098545 105.75741 13.721470 6819.4508 59952405. -0.070753041 0.20681952 105.80256 13.595936 6821.8561 58175042. -0.076976768 0.21265360 105.84503 13.473235 6824.2615 57550261. -0.084024109 0.21848767 105.89056 13.353590 6826.6669 54858233. -0.094045760 0.22432175 105.93776 13.235608 6829.0722 52356950. -0.11066691 0.23015582 105.98566 13.105862 6831.4776 51029710. -0.18301326 0.23598989 106.03421 12.965628 6833.8830 49154038. -0.13304396 0.24182397 106.07866 12.840406 6836.2883 48199894. -0.010833318 0.24765804 106.12113 12.722424