# # 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 = 54.613591 km # Date (UTC) = 2015-01-01T10:00:39.310 # Date (julian) = 2457023.91712165 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.3343 6.0556290e+10 0.024763418 0.030574725 105.63475 32.431448 6496.5492 5.6030690e+10 0.031379058 0.031242620 105.69772 32.316919 6498.7641 5.1970595e+10 0.038088943 0.031910515 105.75567 32.208750 6500.9790 4.8760759e+10 0.045121839 0.032578410 105.81362 32.100581 6503.1938 4.5748427e+10 0.052560170 0.033246305 105.87676 31.985841 6505.4087 4.2571672e+10 0.060401516 0.033914199 105.94194 31.868510 6507.6236 3.9522360e+10 0.068788033 0.034582094 106.00250 31.756604 6509.8385 3.6933586e+10 0.077930213 0.035249989 106.05658 31.652313 6512.0534 3.4666888e+10 0.087928106 0.035917884 106.11066 31.548021 6514.2683 3.2767585e+10 0.098919897 0.036585779 106.16474 31.443729 6516.4832 3.0940793e+10 0.11079453 0.037253674 106.21881 31.339437 6518.6981 2.9160564e+10 0.12351446 0.037921569 106.27554 31.232037 6520.9130 2.7143834e+10 0.13674760 0.038589464 106.34072 31.114706 6523.1279 2.5085868e+10 0.14740653 0.039210806 106.40591 30.997375 6525.3428 2.3184088e+10 0.15552689 0.039743096 106.46069 30.888630 6527.5577 2.1561590e+10 0.16291639 0.041121337 106.51477 30.780461 6529.7726 2.0160447e+10 0.16953254 0.043466389 106.57121 30.669098 6531.9874 1.8635002e+10 0.17494738 0.046665914 106.63205 30.551768 6534.2023 1.7130071e+10 0.17735244 0.048001158 106.69238 30.435056 6536.4172 1.5766018e+10 0.17758343 0.048163805 106.74260 30.330764 6538.6321 1.4576375e+10 0.17739819 0.049464490 106.79281 30.226471 6540.8470 1.3575353e+10 0.17564340 0.051254252 106.84480 30.122179 6543.0619 1.2670136e+10 0.17342276 0.051398140 106.89887 30.017887 6545.2768 1.1811488e+10 0.17140876 0.052458047 106.95295 29.913594 6547.4917 1.0985552e+10 0.16937763 0.053474344 107.01291 29.797963 6549.7066 1.0120442e+10 0.16754932 0.054686342 107.07374 29.680632 6551.9215 9.2950420e+09 0.16590458 0.055559202 107.12855 29.570706 6554.1364 8.5940444e+09 0.16356489 0.054835242 107.17877 29.466400 6556.3513 8.0128049e+09 0.16152357 0.053961484 107.22900 29.362095 6558.5661 7.5381967e+09 0.15932372 0.052756876 107.28299 29.257802 6560.7810 7.1046492e+09 0.15655553 0.051570100 107.33707 29.153510 6562.9959 6.6880245e+09 0.15415959 0.049932236 107.39209 29.044119 6565.2108 6.2499831e+09 0.15182237 0.048079002 107.44858 28.926788 6567.4257 5.8232963e+09 0.14979202 0.046257232 107.50451 28.810629 6569.6406 5.4503409e+09 0.14797063 0.044894118 107.55473 28.706336 6571.8555 5.1434315e+09 0.14611388 0.044269621 107.60494 28.602044 6574.0704 4.8673432e+09 0.14336347 0.042821195 107.65830 28.491220 6576.2853 4.5609544e+09 0.14089727 0.041043023 107.71479 28.373890 6578.5002 4.2596621e+09 0.13797709 0.037859774 107.77003 28.259165 6580.7151 3.9952335e+09 0.13495414 0.035859924 107.82025 28.154873 6582.9300 3.7684288e+09 0.13244564 0.035040725 107.87046 28.050580 6585.1449 3.5827691e+09 0.12994056 0.033854964 107.92068 27.948640 6587.3597 3.4146699e+09 0.12784077 0.033238076 107.97090 27.848197 6589.5746 3.2533804e+09 0.12598366 0.031905944 108.02126 27.747376 6591.7895 3.0968734e+09 0.12373908 0.028311015 108.07775 27.630045 6594.0044 2.9292780e+09 0.12164686 0.026170095 108.13425 27.512714 6596.2193 2.7632000e+09 0.11922458 0.025726277 108.18621 27.404787 6598.4342 2.6242358e+09 0.11754959 0.025199859 108.23643 27.300494 6600.6491 2.4988680e+09 0.11730583 0.026324306 108.28690 27.194477 6602.8640 2.3695943e+09 0.11659997 0.026779336 108.33905 27.077147 6605.0789 2.2399010e+09 0.11597364 0.026731222 108.39119 26.959817 6607.2938 2.1199809e+09 0.11464855 0.025126895 108.44173 26.853323 6609.5087 2.0166267e+09 0.11166162 0.023857030 108.49195 26.749030 6611.7236 1.9293282e+09 0.10902297 0.024497037 108.54123 26.645670 6613.9385 1.8472868e+09 0.10794555 0.023917911 108.58759 26.545227 6616.1533 1.7678154e+09 0.10630570 0.023306367 108.63395 26.444785 6618.3682 1.6922964e+09 0.10554090 0.024048860 108.68693 26.333302 6620.5831 1.6102637e+09 0.10465783 0.024955111 108.74342 26.215972 6622.7980 1.5258857e+09 0.10313365 0.024545586 108.79634 26.103237 6625.0129 1.4526402e+09 0.10149130 0.025413016 108.84269 25.998946 6627.2278 1.3923829e+09 0.099126075 0.025404809 108.88904 25.894654 6629.4427 1.3322286e+09 0.097658927 0.026029063 108.93982 25.783724 6631.6576 1.2695326e+09 0.095640759 0.025997564 108.99196 25.670739 6633.8725 1.2025072e+09 0.094080164 0.026304580 109.04143 25.561773 6636.0874 1.1443442e+09 0.092644091 0.026515821 109.08778 25.457481 6638.3023 1.0992174e+09 0.091774513 0.025658473 109.13414 25.353189 6640.5172 1.0513230e+09 0.092176420 0.025207377 109.18556 25.241288 6642.7321 1.0058123e+09 0.092173822 0.025181653 109.23772 25.128285 6644.9469 9.6007666e+08 0.091368375 0.025445950 109.28655 25.020271 6647.1618 9.2014005e+08 0.090274320 0.026522988 109.33290 24.915979 6649.3767 8.8865930e+08 0.089231578 0.027114385 109.37925 24.811687 6651.5916 8.5396363e+08 0.088832086 0.026937558 109.43130 24.698843 6653.8065 8.1434412e+08 0.088281505 0.027937439 109.48345 24.585858 6656.0214 7.7021368e+08 0.086606195 0.028042206 109.53263 24.469907 6658.2363 7.2632475e+08 0.085219484 0.030480159 109.58043 24.352577 6660.4512 6.8691952e+08 0.083825908 0.032036108 109.62768 24.241693 6662.6661 6.5456052e+08 0.082476274 0.032670560 109.67403 24.141263 6664.8810 6.2849311e+08 0.081633695 0.028982638 109.72039 24.040833 6667.0959 6.0650277e+08 0.081110534 0.027138671 109.77133 23.927008 6669.3108 5.8577725e+08 0.079860020 0.028036531 109.82348 23.809678 6671.5257 5.6252678e+08 0.079718190 0.026872839 109.87088 23.700645 6673.7405 5.4006490e+08 0.078890487 0.028566755 109.91337 23.600202 6675.9554 5.1943527e+08 0.076477307 0.031628367 109.95587 23.499760 6678.1703 5.0554135e+08 0.075153993 0.030822691 110.00708 23.384070 6680.3852 4.8331373e+08 0.075380111 0.029524602 110.05923 23.266739 6682.6001 4.6091402e+08 0.075990352 0.030883052 110.10876 23.152023 6684.8150 4.3666286e+08 0.076001743 0.032695450 110.15656 23.039038 6687.0299 4.1290558e+08 0.074502969 0.034326226 110.20277 22.929826 6689.2448 3.9899223e+08 0.071857788 0.033795675 110.24526 22.829396 6691.4597 3.8127840e+08 0.071011614 0.032892808 110.28775 22.728967 6693.6746 3.6571984e+08 0.070130385 0.031372668 110.33402 22.619603 6695.8895 3.4971768e+08 0.069960489 0.029696089 110.38182 22.506618 6698.1044 3.4005206e+08 0.069099109 0.030361060 110.43140 22.391850 6700.3193 3.3038256e+08 0.067355334 0.030904515 110.48355 22.274519 6702.5341 3.1800262e+08 0.066246928 0.033303245 110.53522 22.157663 6704.7490 3.0386193e+08 0.066550563 0.036545369 110.58302 22.044678 6706.9639 2.8379975e+08 0.066344628 0.040124043 110.63082 21.931693 6709.1788 2.7287371e+08 0.065672567 0.041018806 110.67434 21.828842 6711.3937 2.6350045e+08 0.063748564 0.041140168 110.71683 21.728399 6713.6086 2.5299777e+08 0.061565934 0.045887811 110.76049 21.625203 6715.8235 2.4804380e+08 0.059588974 0.048220836 110.80829 21.512218 6718.0384 2.3780915e+08 0.057415471 0.049872200 110.85609 21.399233 6720.2533 2.2831297e+08 0.056385909 0.050390420 110.89990 21.286248 6722.4682 2.2036251e+08 0.055962071 0.050026422 110.94336 21.173263 6724.6831 2.1053941e+08 0.052329432 0.044222637 110.98950 21.060278 6726.8980 2.0478790e+08 0.049792601 0.040959466 111.03730 20.947294 6729.1128 1.9614635e+08 0.049313927 0.040970211 111.08510 20.832937 6731.3277 1.8555549e+08 0.047433613 0.042402290 111.13290 20.715606 6733.5426 1.7689987e+08 0.046248480 0.046870420 111.18070 20.598342 6735.7575 1.6830372e+08 0.047418262 0.050097601 111.22850 20.485354 6737.9724 1.6427357e+08 0.048818405 0.057233225 111.27631 20.372368 6740.1873 1.6316135e+08 0.048477671 0.064370348 111.32101 20.259383 6742.4022 1.5563567e+08 0.045794369 0.069590791 111.36446 20.146398 6744.6171 1.5320719e+08 0.041623452 0.078270718 111.40971 20.033406 6746.8320 1.4609007e+08 0.037489995 0.069314509 111.45752 19.920404 6749.0469 1.4021114e+08 0.036832075 0.072265098 111.50484 19.807404 6751.2618 1.3669283e+08 0.033447707 0.073822349 111.54830 19.694419 6753.4767 1.2872568e+08 0.031051234 0.074519857 111.59175 19.581434 6755.6916 1.2677464e+08 0.028731807 0.074302143 111.63873 19.471970 6757.9064 1.1962463e+08 0.027663057 0.073989231 111.68653 19.363330 6760.1213 1.1450808e+08 0.028318725 0.076292660 111.73212 19.252478 6762.3362 1.0794651e+08 0.032442915 0.077508476 111.77558 19.139493 6764.5511 1.0509715e+08 0.035309136 0.079509688 111.81994 19.026508 6766.7660 1.0296671e+08 0.035799022 0.081446489 111.86774 18.913524 6768.9809 99129127. 0.031093599 0.084385564 111.91554 18.800539 6771.1958 97358604. 0.027037998 0.089780042 111.96503 18.672917 6773.4107 91598968. 0.023015383 0.095152130 112.01469 18.543788 6775.6256 86974502. 0.018997619 0.10052422 112.05881 18.429080 6777.8405 81741582. 0.014980845 0.10589630 112.10227 18.316095 6780.0554 75509676. 0.010982873 0.11126839 112.14573 18.203109 6782.2703 72070529. 0.0070166091 0.11664048 112.18919 18.090124 6784.4852 69948962. 0.0030725573 0.12201257 112.23264 17.978402 6786.7000 68330759. -0.00086274506 0.12738465 112.27610 17.869763 6788.9149 68665653. -0.0048003025 0.13275674 112.31955 17.761123 6791.1298 65097475. -0.0087821338 0.13812883 112.36915 17.632207 6793.3447 62006775. -0.012804766 0.14350092 112.41881 17.503078 6795.5596 63132062. -0.016848239 0.14887300 112.46242 17.389708 6797.7745 59639482. -0.021033638 0.15424509 112.50587 17.276723 6799.9894 57903073. -0.025369836 0.15961718 112.55352 17.156194 6802.2043 55219582. -0.030043152 0.16498927 112.60319 17.032032 6804.4192 50748912. -0.036298026 0.17036135 112.64875 16.915263 6806.6341 50065629. -0.052184658 0.17573344 112.69220 16.802278 6808.8490 47783958. -0.046793872 0.18110553 112.73789 16.683476 6811.0639 47647314. -0.028977581 0.18647761 112.78756 16.554347