# # 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 = 38.239716 km # Date (UTC) = 2016-12-28T08:59:39.778 # Date (julian) = 2457750.87476595 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6507.9130 5.8813862e+10 0.084364287 0.034669342 -15.621550 48.699339 6510.0100 5.3322628e+10 0.094430388 0.035301712 -15.716638 48.611565 6512.1071 4.8508538e+10 0.10476868 0.035934082 -15.808976 48.521024 6514.2042 4.4032897e+10 0.11530095 0.036566452 -15.900419 48.429581 6516.3013 3.9790306e+10 0.12600595 0.037198822 -15.991861 48.338214 6518.3984 3.5874541e+10 0.13690934 0.037831192 -16.083292 48.250439 6520.4955 3.2405913e+10 0.14805962 0.038463561 -16.174722 48.162665 6522.5925 2.9440324e+10 0.15785787 0.039072416 -16.265107 48.073846 6524.6896 2.6753233e+10 0.16400281 0.039671954 -16.352880 47.982415 6526.7867 2.4345998e+10 0.16866434 0.040492861 -16.440653 47.890985 6528.8838 2.2181164e+10 0.17209829 0.042143598 -16.530444 47.801573 6530.9809 2.0207193e+10 0.17506506 0.045201908 -16.621874 47.713800 6533.0780 1.8465851e+10 0.17863311 0.047552718 -16.713305 47.626027 6535.1750 1.6856417e+10 0.17968850 0.048148363 -16.801755 47.535255 6537.2721 1.5393999e+10 0.17989787 0.048813522 -16.889540 47.443812 6539.3692 1.4061913e+10 0.17939892 0.050090547 -16.977019 47.352676 6541.4663 1.2827939e+10 0.17765312 0.051175314 -17.061135 47.264902 6543.5634 1.1696340e+10 0.17508086 0.051529754 -17.145252 47.177128 6545.6605 1.0688810e+10 0.17206668 0.052461484 -17.230645 47.088078 6547.7575 9.7975186e+09 0.16946909 0.053575444 -17.318418 46.996647 6549.8546 9.0041719e+09 0.16699802 0.054837211 -17.406191 46.905217 6551.9517 8.2976544e+09 0.16466180 0.055569815 -17.491723 46.816028 6554.0488 7.6554206e+09 0.16169551 0.054833404 -17.575850 46.728244 6556.1459 7.0615915e+09 0.15907547 0.053991679 -17.659977 46.640460 6558.2430 6.5125243e+09 0.15669568 0.053032275 -17.744094 46.549464 6560.3400 6.0070447e+09 0.15373596 0.051967719 -17.828210 46.458033 6562.4371 5.5431410e+09 0.15067735 0.050463964 -17.912326 46.367139 6564.5342 5.1304248e+09 0.14754656 0.048529495 -17.996442 46.279365 6566.6313 4.7547581e+09 0.14482566 0.046825765 -18.080558 46.191591 6568.7284 4.4245625e+09 0.14222335 0.045102114 -18.163166 46.102310 6570.8255 4.1107534e+09 0.13999806 0.044575577 -18.243625 46.010879 6572.9225 3.8187653e+09 0.13751486 0.043701841 -18.324085 45.919449 6575.0196 3.5471396e+09 0.13461600 0.042355020 -18.404551 45.828010 6577.1167 3.3085612e+09 0.13117548 0.040037056 -18.485020 45.736567 6579.2138 3.0869396e+09 0.12724553 0.036952969 -18.565489 45.645125 6581.3109 2.8541395e+09 0.12387481 0.035502473 -18.655444 45.546788 6583.4080 2.6271933e+09 0.12079861 0.034815178 -18.745962 45.448043 6585.5050 2.4046145e+09 0.11759422 0.033567007 -18.831315 45.353054 6587.6021 2.2201860e+09 0.11453401 0.033291776 -18.911774 45.261623 6589.6992 2.0598255e+09 0.11100334 0.031658820 -18.992232 45.170192 6591.7963 1.9078388e+09 0.10729820 0.028303393 -19.069841 45.078762 6593.8934 1.7717098e+09 0.10421197 0.026271657 -19.146642 44.987332 6595.9905 1.6459169e+09 0.10126098 0.025726284 -19.223444 44.896065 6598.0875 1.5336337e+09 0.099631342 0.025365372 -19.300246 44.808291 6600.1846 1.4355380e+09 0.099081015 0.025369419 -19.377048 44.720517 6602.2817 1.3404901e+09 0.098548736 0.027276239 -19.453853 44.631604 6604.3788 1.2526084e+09 0.097409661 0.026296187 -19.530664 44.540162 6606.4759 1.1679483e+09 0.096870987 0.026648842 -19.607475 44.448719 6608.5730 1.0879198e+09 0.094395283 0.023717223 -19.684281 44.359392 6610.6700 1.0226921e+09 0.091537537 0.024643182 -19.761083 44.271618 6612.7671 9.5694668e+08 0.090239421 0.023747590 -19.837886 44.183844 6614.8642 9.0283840e+08 0.089094925 0.023345091 -19.911606 44.092990 6616.9613 8.4755628e+08 0.087709940 0.023433173 -19.984750 44.001560 6619.0584 7.9374805e+08 0.087004218 0.024539998 -20.059325 43.908896 6621.1555 7.3760107e+08 0.086239796 0.025037922 -20.145729 43.806035 6623.2525 6.7387971e+08 0.084883227 0.024585386 -20.232133 43.703173 6625.3496 6.2493195e+08 0.083624777 0.025814802 -20.309560 43.610527 6627.4467 5.8574341e+08 0.081653346 0.025489364 -20.382714 43.522743 6629.5438 5.5096262e+08 0.080415040 0.026010787 -20.455867 43.434959 6631.6409 5.2599476e+08 0.078501459 0.025995865 -20.525562 43.343734 6633.7379 4.9689669e+08 0.076948199 0.026281091 -20.595049 43.252304 6635.8350 4.7027483e+08 0.075297802 0.026525013 -20.665301 43.160873 6637.9321 4.4440703e+08 0.074129121 0.025704890 -20.738446 43.069443 6640.0292 4.1731993e+08 0.073987637 0.025267080 -20.811591 42.978012 6642.1263 3.9443211e+08 0.074183345 0.025156864 -20.882999 42.886581 6644.2234 3.7452767e+08 0.073436365 0.025367747 -20.952486 42.795151 6646.3204 3.5764090e+08 0.072708152 0.026086022 -21.021974 42.703720 6648.4175 3.4076059e+08 0.071896599 0.027243781 -21.100941 42.606872 6650.5146 3.2627850e+08 0.071493792 0.026373047 -21.183229 42.508124 6652.6117 3.0947577e+08 0.071195935 0.027418824 -21.261551 42.411642 6654.7088 2.8958362e+08 0.070334329 0.027734278 -21.331047 42.320200 6656.8059 2.7216788e+08 0.068549077 0.028730719 -21.400544 42.228757 6658.9029 2.5654223e+08 0.067032454 0.031662473 -21.467928 42.137322 6661.0000 2.4123027e+08 0.065710061 0.032534965 -21.533758 42.045892 6663.0971 2.3271450e+08 0.064416528 0.032456300 -21.599588 41.954461 6665.1942 2.2013855e+08 0.063718298 0.028228933 -21.675809 41.856872 6667.2913 2.0853471e+08 0.063020468 0.027210449 -21.753983 41.758126 6669.3884 1.9788694e+08 0.061755575 0.027956828 -21.827079 41.662390 6671.4854 1.8445447e+08 0.061418282 0.026872266 -21.892909 41.570959 6673.5825 1.7389809e+08 0.060476165 0.028330431 -21.958739 41.479529 6675.6796 1.6384188e+08 0.058117861 0.031100063 -22.024575 41.390566 6677.7767 1.5432398e+08 0.056405784 0.031254066 -22.090414 41.302781 6679.8738 1.5017831e+08 0.056127082 0.029545721 -22.156253 41.214995 6681.9709 1.4251520e+08 0.056459665 0.030402188 -22.229845 41.112993 6684.0679 1.3152297e+08 0.056137673 0.032657540 -22.303905 41.010132 6686.1650 1.2246886e+08 0.055023555 0.033857099 -22.373746 40.913130 6688.2621 1.1291966e+08 0.052093322 0.033845694 -22.439576 40.821699 6690.3592 1.1170424e+08 0.050576856 0.033074700 -22.505407 40.730268 6692.4563 1.0758980e+08 0.049620259 0.032235482 -22.577642 40.633144 6694.5534 1.0460484e+08 0.048965055 0.030485464 -22.651702 40.534399 6696.6504 94572705. 0.048180236 0.029946031 -22.721627 40.438198 6698.7475 84979334. 0.046522090 0.031243882 -22.783800 40.346768 6700.8446 80047828. 0.044659956 0.031294188 -22.845972 40.255337 6702.9417 73458652. 0.043843465 0.033628675 -22.915438 40.156894 6705.0388 72001859. 0.044255077 0.036737540 -22.989497 40.054033 6707.1359 69703363. 0.043940300 0.040167365 -23.061382 39.953932 6709.2329 63202761. 0.042518044 0.040984381 -23.123563 39.866146 6711.3300 59635223. 0.040199890 0.041067710 -23.185744 39.778360 6713.4271 56129398. 0.037272822 0.045231380 -23.251412 39.683804 6715.5242 53928434. 0.034231737 0.047914715 -23.321358 39.580943 6717.6213 56930449. 0.031568902 0.049835840 -23.391158 39.478295 6719.7184 54566703. 0.026206476 0.050687348 -23.453331 39.386865 6721.8154 51090109. 0.016863925 0.050549595 -23.515504 39.295435 6723.9125 50171609. -0.036861428 0.049877874 -23.578716 39.201924 6726.0096 49810878. 0.0025044569 0.040951454 -23.644547 39.103179 6728.1067 49154365. 0.094318743 0.039779313 -23.710378 39.004433