# # 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 = 48.452744 km # Date (UTC) = 2014-12-04T09:14:42.174 # Date (julian) = 2456995.88521035 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6492.9251 1.0215411e+11 0.021847426 0.030149793 117.05500 27.595006 6494.7591 8.4264082e+10 0.027313363 0.030702836 117.09338 27.505449 6496.5931 7.2868775e+10 0.032556467 0.031255879 117.13190 27.415892 6498.4272 6.4913971e+10 0.037789787 0.031808921 117.17349 27.326324 6500.2612 5.8996431e+10 0.043206210 0.032361964 117.21508 27.236755 6502.0952 5.4400120e+10 0.048991235 0.032915007 117.25667 27.147187 6503.9292 5.0187767e+10 0.055168956 0.033468049 117.30303 27.047332 6505.7632 4.6169845e+10 0.061760865 0.034021092 117.34980 26.946580 6507.5972 4.2156847e+10 0.068772188 0.034574135 117.39540 26.847852 6509.4312 3.8753469e+10 0.076518181 0.035127177 117.43378 26.761494 6511.2653 3.6204812e+10 0.085303713 0.035680220 117.47216 26.675136 6513.0993 3.4064642e+10 0.095023653 0.036233263 117.51061 26.588575 6514.9333 3.2007865e+10 0.10547032 0.036786305 117.55379 26.487822 6516.7673 2.9748773e+10 0.11638491 0.037339348 117.59697 26.387069 6518.6013 2.7470208e+10 0.12782962 0.037892391 117.63977 26.288948 6520.4353 2.5550716e+10 0.13996126 0.038445433 117.68135 26.199392 6522.2694 2.3972250e+10 0.15190770 0.038987786 117.72293 26.109836 6524.1034 2.2658215e+10 0.15972379 0.039463685 117.76417 26.020279 6525.9374 2.1407803e+10 0.16587563 0.039675232 117.80255 25.930711 6527.7714 2.0301359e+10 0.17205067 0.041276524 117.84094 25.841142 6529.6054 1.9260703e+10 0.17523589 0.043200173 117.87933 25.751563 6531.4394 1.8182278e+10 0.17634612 0.045868291 117.92242 25.654552 6533.2735 1.6969298e+10 0.17731729 0.047635798 117.96560 25.557398 6535.1075 1.5708052e+10 0.17714363 0.048177675 118.00780 25.461788 6536.9415 1.4553875e+10 0.17613400 0.048632876 118.04619 25.372233 6538.7755 1.3552540e+10 0.17487377 0.049534311 118.08457 25.282677 6540.6095 1.2696395e+10 0.17398866 0.051142056 118.12295 25.193367 6542.4435 1.1919533e+10 0.17230225 0.051170629 118.16133 25.107008 6544.2776 1.1229766e+10 0.17060533 0.051869504 118.19971 25.020650 6546.1116 1.0598011e+10 0.16874013 0.052556330 118.23809 24.934292 6547.9456 9.9384565e+09 0.16797979 0.053646953 118.28103 24.834255 6549.7796 9.2406864e+09 0.16687276 0.054760756 118.32421 24.733502 6551.6136 8.5593579e+09 0.16544338 0.055451140 118.36657 24.634664 6553.4476 7.9625070e+09 0.16398658 0.055110048 118.40496 24.545096 6555.2816 7.5109134e+09 0.16260867 0.054616712 118.44335 24.455528 6557.1157 7.1263759e+09 0.16091415 0.053793607 118.48179 24.365618 6558.9497 6.7272768e+09 0.15848079 0.052430059 118.52137 24.268464 6560.7837 6.2918605e+09 0.15629541 0.051567705 118.56095 24.171309 6562.6177 5.8595514e+09 0.15436544 0.050292126 118.60021 24.077027 6564.4517 5.4866057e+09 0.15189533 0.048566873 118.63859 23.990669 6566.2857 5.1973953e+09 0.14971603 0.047021239 118.67697 23.904311 6568.1198 4.9546789e+09 0.14827721 0.045661572 118.71491 23.817506 6569.9538 4.7145798e+09 0.14715950 0.044914501 118.75009 23.727950 6571.7878 4.5213701e+09 0.14580009 0.044288113 118.78527 23.638393 6573.6218 4.3304902e+09 0.14409410 0.043158494 118.82056 23.548738 6575.4558 4.1356255e+09 0.14270229 0.041917371 118.86374 23.451584 6577.2898 3.9307295e+09 0.14109758 0.039765101 118.90692 23.354430 6579.1239 3.7127931e+09 0.13905000 0.037002407 118.94823 23.259051 6580.9579 3.5235229e+09 0.13745106 0.035635539 118.98342 23.169482 6582.7919 3.3677657e+09 0.13631217 0.035078299 119.01861 23.079914 6584.6259 3.2309748e+09 0.13476918 0.034174556 119.05380 22.990692 6586.4599 3.1057507e+09 0.13314330 0.033165351 119.08898 22.904333 6588.2939 2.9990084e+09 0.13186305 0.033281769 119.12416 22.817975 6590.1280 2.8936381e+09 0.13012272 0.030824053 119.15935 22.731606 6591.9620 2.7884729e+09 0.12799411 0.028116439 119.20237 22.634665 6593.7960 2.6666219e+09 0.12604382 0.026362195 119.24555 22.537511 6595.6300 2.5447831e+09 0.12386613 0.025688904 119.28711 22.441893 6597.4640 2.4304496e+09 0.12203774 0.025576301 119.32230 22.352337 6599.2980 2.3428615e+09 0.12053581 0.024947655 119.35748 22.262780 6601.1321 2.2655445e+09 0.12022641 0.027107878 119.39299 22.172649 6602.9661 2.1835754e+09 0.11912055 0.026692231 119.43258 22.075495 6604.8001 2.0873126e+09 0.11813845 0.026546339 119.47216 21.978341 6606.6341 1.9917500e+09 0.11711535 0.026364508 119.51044 21.884385 6608.4681 1.9074391e+09 0.11472806 0.023719995 119.54562 21.798016 6610.3021 1.8311769e+09 0.11235003 0.024291658 119.58081 21.711646 6612.1361 1.7740348e+09 0.11069152 0.024219028 119.61600 21.625279 6613.9702 1.7127659e+09 0.11006793 0.023929545 119.65118 21.538921 6615.8042 1.6624522e+09 0.10891024 0.023276274 119.68636 21.452564 6617.6382 1.6175356e+09 0.10835597 0.023650841 119.72174 21.365732 6619.4722 1.5645013e+09 0.10784158 0.024639851 119.76132 21.268577 6621.3062 1.5053074e+09 0.10715753 0.024987946 119.80090 21.171423 6623.1402 1.4397849e+09 0.10603561 0.024543784 119.83847 21.077128 6624.9743 1.3812973e+09 0.10500213 0.025383825 119.87046 20.990770 6626.8083 1.3348210e+09 0.10324586 0.025561086 119.90244 20.904412 6628.6423 1.2951729e+09 0.10220294 0.025963872 119.93548 20.816560 6630.4763 1.2498757e+09 0.10087768 0.025929475 119.97506 20.719406 6632.3103 1.1974421e+09 0.099546931 0.026069556 120.01464 20.622251 6634.1443 1.1453307e+09 0.098257582 0.026337371 120.05264 20.528972 6635.9784 1.0953290e+09 0.096955548 0.026546507 120.08783 20.442603 6637.8124 1.0610812e+09 0.095934664 0.025763537 120.12302 20.356234 6639.6464 1.0311577e+09 0.095309775 0.025397041 120.15839 20.267351 6641.4804 1.0010711e+09 0.095366005 0.025149932 120.19437 20.170196 6643.3144 9.6168884e+08 0.094619151 0.025240092 120.23036 20.073041 6645.1484 9.1770896e+08 0.093643003 0.025521221 120.26598 19.980788 6646.9825 8.8393189e+08 0.092389998 0.026428696 120.30116 19.894430 6648.8165 8.5759377e+08 0.091178686 0.027510830 120.33634 19.808072 6650.6505 8.3174601e+08 0.090807825 0.026404151 120.37179 19.718178 6652.4845 8.0209656e+08 0.090484615 0.027383826 120.40777 19.621024 6654.3185 7.6753014e+08 0.089832190 0.027900535 120.44375 19.523870 6656.1525 7.3445150e+08 0.088351773 0.028157294 120.47930 19.432637 6657.9865 7.0927125e+08 0.087208907 0.030045475 120.51448 19.346279 6659.8206 6.8932356e+08 0.085894846 0.031663428 120.54966 19.259921 6661.6546 6.7067512e+08 0.084541292 0.032868341 120.58518 19.169008 6663.4886 6.4720161e+08 0.083442164 0.032347811 120.62116 19.071853 6665.3226 6.2102927e+08 0.083217905 0.028018520 120.65715 18.974699 6667.1566 5.9165270e+08 0.082835281 0.027160990 120.69056 18.884478 6668.9906 5.7110003e+08 0.081611092 0.028347423 120.72255 18.798108 6670.8247 5.5687371e+08 0.081619345 0.026946581 120.75454 18.711739 6672.6587 5.4224174e+08 0.081159089 0.027261380 120.78859 18.619797 6674.4927 5.2726331e+08 0.079927178 0.029370409 120.82458 18.522642 6676.3267 5.0367457e+08 0.077871130 0.031924285 120.86056 18.425488 6678.1607 4.8136082e+08 0.077058813 0.030829115 120.89596 18.338657 6679.9947 4.6507925e+08 0.077130124 0.029445763 120.93114 18.255498 6681.8288 4.5098048e+08 0.077553134 0.030293167 120.96632 18.172338 6683.6628 4.3729440e+08 0.077627038 0.032159881 121.00199 18.080626 6685.4968 4.2155850e+08 0.077139049 0.033229568 121.03798 17.983472 6687.3308 4.0800573e+08 0.075195187 0.034158407 121.07396 17.886318 6689.1648 3.9714829e+08 0.072655398 0.033867660 121.10994 17.789163 6690.9988 3.8181296e+08 0.071845538 0.033001396 121.14592 17.692009 6692.8329 3.6826766e+08 0.071122397 0.031798187 121.18169 17.595595 6694.6669 3.5426744e+08 0.070495974 0.030326376 121.21368 17.512425 6696.5009 3.3846701e+08 0.070227943 0.029883893 121.24567 17.429254 6698.3349 3.2848740e+08 0.069346911 0.030677506 121.27766 17.346084 6700.1689 3.1640402e+08 0.067949471 0.030793008 121.31335 17.249952 6702.0029 3.0554072e+08 0.066448317 0.032879072 121.34933 17.152798 6703.8369 2.9920592e+08 0.066703683 0.035769546 121.38531 17.055644 6705.6710 2.8391693e+08 0.066791679 0.037861445 121.42130 16.958490 6707.5050 2.7371841e+08 0.066434933 0.040114488 121.45728 16.861335 6709.3390 2.6363892e+08 0.065682817 0.040916925 121.49194 16.765508 6711.1730 2.5687285e+08 0.064034762 0.040889073 121.52433 16.671952 6713.0070 2.5056483e+08 0.062286736 0.043712046 121.55671 16.578396 6714.8410 2.3816117e+08 0.060525933 0.047366638 121.58886 16.489084 6716.6751 2.2763421e+08 0.058813213 0.049395662 121.62084 16.402726 6718.5091 2.1816818e+08 0.056867272 0.050605262 121.65283 16.316368 6720.3431 2.1466987e+08 0.056421124 0.050380013 121.68666 16.226677 6722.1771 2.1087064e+08 0.056153586 0.050386251 121.72264 16.133121 6724.0111 2.0406341e+08 0.054241420 0.049833761 121.75863 16.039565 6725.8451 1.9223887e+08 0.050652218 0.041048101 121.79461 15.943548 6727.6792 1.8454478e+08 0.049784026 0.040055555 121.83060 15.846394 6729.5132 1.7616538e+08 0.048998756 0.040703385 121.86658 15.749239 6731.3472 1.6961680e+08 0.047478222 0.042440995 121.89931 15.655341 6733.1812 1.6364046e+08 0.046557579 0.044908121 121.93169 15.561784 6735.0152 1.5638616e+08 0.046798988 0.049309591 121.96453 15.468226 6736.8492 1.5359788e+08 0.048232915 0.053565597 122.00052 15.374656 6738.6833 1.4637493e+08 0.048999478 0.061082714 122.03650 15.281087 6740.5173 1.4238261e+08 0.048315897 0.064934027 122.07124 15.186273 6742.3513 1.3638045e+08 0.045954858 0.069466723 122.10363 15.089119 6744.1853 1.3211062e+08 0.041970617 0.077936738 122.13601 14.991964 6746.0193 1.2680528e+08 0.041082631 0.078762694 122.17044 14.896854 6747.8533 1.1929066e+08 0.037060995 0.067067391 122.20642 14.803298 6749.6873 1.1458055e+08 0.035235156 0.072089736 122.24241 14.709742 6751.5214 1.0593431e+08 0.032941614 0.073932107 122.27555 14.616187 6753.3554 99918354. 0.031265771 0.074127368 122.30793 14.522631 6755.1894 94556500. 0.029586643 0.074522307 122.34035 14.429040 6757.0234 92251061. 0.027183871 0.076669003 122.37634 14.331885 6758.8574 92211048. 0.028027814 0.075518470 122.41232 14.234730 6760.6914 84748034. 0.028381282 0.077379826 122.44748 14.138406 6762.5255 79548451. 0.032780152 0.077203233 122.47986 14.044850 6764.3595 74163193. 0.035166822 0.079500507 122.51224 13.951294 6766.1935 70060658. 0.036230342 0.080151433 122.54463 13.857738 6768.0275 67870225. 0.033354640 0.080955011 122.57701 13.764183 6769.8615 63701710. 0.029215449 0.086543839 122.60940 13.670627 6771.6955 63471352. 0.024569456 0.090992134 122.64421 13.577071 6773.5296 60189971. 0.015368617 0.095440430 122.68019 13.483515 6775.3636 57582561. 0.015930284 0.099888725 122.71617 13.389959 6777.1976 54197220. 0.022566816 0.10433702 122.74894 13.296391