# # 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 = 60.637383 km # Date (UTC) = 2014-11-25T10:21:36.629 # Date (julian) = 2456986.93167395 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6506.2326 5.1640101e+10 0.072061684 0.034162646 100.45451 27.919466 6509.0415 4.6334722e+10 0.083986456 0.035009642 100.53008 27.743144 6511.8503 4.1203514e+10 0.096101680 0.035856637 100.60120 27.574598 6514.6591 3.6689822e+10 0.10850556 0.036703633 100.66734 27.414759 6517.4680 3.2999614e+10 0.12134920 0.037550628 100.72985 27.258558 6520.2768 2.9869200e+10 0.13464601 0.038397624 100.79048 27.104253 6523.0856 2.6987313e+10 0.14530358 0.039200335 100.85574 26.949948 6525.8945 2.4390515e+10 0.15014702 0.039680132 100.92186 26.795488 6528.7033 2.2085489e+10 0.15503866 0.042000404 100.98800 26.635673 6531.5121 1.9982653e+10 0.15860059 0.045974077 101.05295 26.477035 6534.3210 1.8064282e+10 0.16067319 0.048034340 101.11357 26.322730 6537.1298 1.6358782e+10 0.16157726 0.048746413 101.17639 26.168426 6539.9386 1.4842407e+10 0.16260589 0.050779795 101.24252 26.014122 6542.7474 1.3478987e+10 0.16182606 0.051286009 101.30543 25.856596 6545.5563 1.2239003e+10 0.16166834 0.052460551 101.36605 25.696781 6548.3651 1.1108624e+10 0.16180743 0.053776679 101.42667 25.541208 6551.1739 1.0093555e+10 0.16158884 0.055296806 101.48729 25.386903 6553.9828 9.2019560e+09 0.16061472 0.054841042 101.55318 25.232577 6556.7916 8.4146039e+09 0.15896865 0.053896746 101.61854 25.078253 6559.6004 7.7147624e+09 0.15608497 0.052319410 101.67916 24.923948 6562.4093 7.1003417e+09 0.15279720 0.050490476 101.73978 24.769643 6565.2181 6.5505150e+09 0.15003705 0.048070751 101.80040 24.615339 6568.0269 6.0585576e+09 0.14803350 0.045746913 101.86102 24.458215 6570.8358 5.6147029e+09 0.14641618 0.044571311 101.92164 24.298399 6573.6446 5.2070775e+09 0.14463110 0.043140218 101.98226 24.142425 6576.4534 4.8395214e+09 0.14264457 0.040849502 102.04288 23.988120 6579.2622 4.5116825e+09 0.14011681 0.036926329 102.10350 23.833816 6582.0711 4.2190960e+09 0.13821901 0.035274453 102.16375 23.679512 6584.8799 3.9432135e+09 0.13640735 0.034036191 102.21886 23.525208 6587.6887 3.6788470e+09 0.13465143 0.033310968 102.27536 23.370903 6590.4976 3.4346526e+09 0.13237249 0.030136508 102.33598 23.216598 6593.3064 3.2076974e+09 0.12988385 0.026817360 102.39660 23.062293 6596.1152 2.9938944e+09 0.12678971 0.025726750 102.45722 22.907989 6598.9241 2.7936019e+09 0.12464818 0.024965985 102.51441 22.753670 6601.7329 2.6125541e+09 0.12462601 0.027390842 102.56952 22.599342 6604.5417 2.4627795e+09 0.12310826 0.026392935 102.61967 22.462887 6607.3506 2.3390917e+09 0.12129206 0.025014778 102.66866 22.330628 6610.1594 2.2251210e+09 0.11707073 0.024155270 102.72658 22.181430 6612.9682 2.1102781e+09 0.11433319 0.023597336 102.78720 22.027125 6615.7770 1.9967731e+09 0.11181980 0.023275439 102.84256 21.872821 6618.5859 1.8834040e+09 0.11025290 0.024213205 102.89767 21.718516 6621.3947 1.7804406e+09 0.10881881 0.024958618 102.95278 21.564211 6624.2035 1.6882582e+09 0.10667504 0.024971265 103.00968 21.409906 6627.0124 1.6008515e+09 0.10489105 0.025321590 103.07030 21.255603 6629.8212 1.5205908e+09 0.10392471 0.025960629 103.12811 21.104109 6632.6300 1.4387348e+09 0.10227993 0.026107891 103.18321 20.955315 6635.4389 1.3587312e+09 0.10075992 0.026465602 103.23832 20.802689 6638.2477 1.2900156e+09 0.099472114 0.025660851 103.29344 20.648384 6641.0565 1.2234231e+09 0.099884233 0.025148492 103.34855 20.494060 6643.8654 1.1615944e+09 0.099057302 0.025323277 103.40367 20.340100 6646.6742 1.1020133e+09 0.097837626 0.026269130 103.45878 20.191306 6649.4830 1.0459372e+09 0.096577161 0.026967867 103.51388 20.041124 6652.2919 9.9670505e+08 0.095947753 0.027330821 103.56899 19.886819 6655.1007 9.5141135e+08 0.094487336 0.027651819 103.62169 19.734925 6657.9095 9.0566686e+08 0.092131462 0.029956118 103.67129 19.586133 6660.7183 8.5986358e+08 0.089991253 0.032278938 103.72432 19.433907 6663.5272 8.1798211e+08 0.088004988 0.032337120 103.77943 19.279601 6666.3360 7.8017309e+08 0.087336557 0.026974070 103.83454 19.129750 6669.1448 7.4906743e+08 0.085566566 0.028206945 103.88964 18.980949 6671.9537 7.1967854e+08 0.085076350 0.026878939 103.93928 18.826688 6674.7625 6.8480813e+08 0.083254112 0.029598009 103.99128 18.669566 6677.5713 6.4795509e+08 0.080487155 0.031546013 104.05426 18.499512 6680.3802 6.1028300e+08 0.080395690 0.029523509 104.11258 18.338770 6683.1890 5.7563185e+08 0.080969958 0.031465551 104.16769 18.184465 6685.9978 5.4802075e+08 0.080303061 0.033758785 104.21852 18.034440 6688.8067 5.2174102e+08 0.076829571 0.033971394 104.26811 17.885645 6691.6155 4.9920906e+08 0.075505794 0.032856049 104.31772 17.736831 6694.4243 4.7760448e+08 0.074514611 0.030666326 104.36814 17.587205 6697.2331 4.5693477e+08 0.074024639 0.030120770 104.42325 17.432901 6700.0420 4.3916489e+08 0.072211083 0.030698855 104.47652 17.280432 6702.8508 4.1940827e+08 0.070964837 0.033556105 104.52612 17.131638 6705.6596 3.9975523e+08 0.071110382 0.037841312 104.57572 16.982845 6708.4685 3.7841164e+08 0.070622509 0.040553726 104.62532 16.834052 6711.2773 3.6169987e+08 0.068523641 0.041007726 104.67879 16.685258 6714.0861 3.4719696e+08 0.065719273 0.047309884 104.73390 16.536464 6716.8950 3.3403417e+08 0.063306671 0.049719559 104.79041 16.368762 6719.7038 3.1986738e+08 0.061163756 0.050701183 104.84496 16.203459 6722.5126 3.0240769e+08 0.061029507 0.049971466 104.89456 16.049155 6725.3215 2.8666594e+08 0.056402179 0.041375222 104.94415 15.897534 6728.1303 2.7110022e+08 0.055277890 0.039812759 104.99375 15.748741 6730.9391 2.5895473e+08 0.053448251 0.041666549 105.04335 15.599947 6733.7479 2.5068426e+08 0.051833069 0.047985141 105.09295 15.451153 6736.5568 2.3890864e+08 0.053811416 0.052459946 105.14863 15.284121 6739.3656 2.2728713e+08 0.054805214 0.063273990 105.20340 15.119810 6742.1744 2.1496457e+08 0.052412357 0.069035811 105.25299 14.971017 6744.9833 2.0538451e+08 0.047794417 0.078553949 105.30260 14.822213 6747.7921 2.0165813e+08 0.043506965 0.067088470 105.35220 14.673397 6750.6009 1.9118290e+08 0.041158710 0.073030252 105.40635 14.510965 6753.4098 1.8172793e+08 0.038456363 0.074303366 105.46265 14.342342 6756.2186 1.7078432e+08 0.035909993 0.074729391 105.51225 14.199060 6759.0274 1.6321208e+08 0.036272894 0.075826573 105.56053 14.054460 6761.8363 1.5662913e+08 0.039793679 0.078037316 105.60462 13.905666 6764.6451 1.4732378e+08 0.044263013 0.079514190 105.65405 13.747852 6767.4539 1.3959567e+08 0.043835113 0.081467492 105.71073 13.577799 6770.2628 1.3231292e+08 0.038094940 0.087516988 105.76149 13.425530 6773.0716 1.2806598e+08 0.032950185 0.094329638 105.81110 13.276270 6775.8804 1.2237995e+08 0.027818238 0.10114229 105.86149 13.106217 6778.6892 1.1849988e+08 0.022494462 0.10795494 105.91154 12.947787 6781.4981 1.1394417e+08 0.017125180 0.11476759 105.96114 12.804504 6784.3069 1.0647631e+08 0.011837766 0.12158024 106.01512 12.644633 6787.1157 1.0127773e+08 0.0063106754 0.12839289 106.07161 12.474580 6789.9246 93899564. 0.00079474651 0.13520554 106.12199 12.304527 6792.7334 90526884. -0.0050590551 0.14201819 106.17203 12.146363 6795.5422 90105785. -0.011130959 0.14883084 106.22162 12.003081 6798.3511 86435792. -0.017158701 0.15564349 106.27172 11.842945 6801.1599 82508603. -0.023281634 0.16245614 106.32237 11.672892 6803.9687 75600956. -0.029515966 0.16926879 106.37906 11.502837 6806.7776 69295403. -0.035935410 0.17608144 106.43002 11.344939 6809.5864 66470595. -0.042381796 0.18289409 106.47410 11.201656 6812.3952 60765326. -0.049101605 0.18970674 106.52222 11.041254 6815.2040 54642790. -0.056161898 0.19651939 106.57293 10.871527 6818.0129 51446350. -0.063123551 0.20333204 106.62962 10.707772 6820.8217 56019329. -0.068689845 0.21014469 106.68338 10.544017 6823.6305 62852716. -0.073750065 0.21695734 106.73376 10.380262 6826.4394 66628423. -0.079275451 0.22376999 106.78415 10.210987 6829.2482 64305073. -0.085890265 0.23058264 106.83431 10.048658 6832.0570 58498874. -0.093704391 0.23739529 106.88391 9.9053748 6834.8659 54296811. -0.10213242 0.24420794 106.93388 9.7494045 6837.6747 50721752. -0.11218682 0.25102059 106.98426 9.5793515 6840.4835 51034953. -0.12515390 0.25783324 107.03465 9.4148797 6843.2924 51458577. -0.17842917 0.26464589 107.08504 9.2511245 6846.1012 48888347. -0.14199250 0.27145854 107.13543 9.0873693 6848.9100 41551174. -0.044735386 0.27827119 107.19178 8.9042127