# # 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 = 47.841341 km # Date (UTC) = 2015-12-05T10:30:46.650 # Date (julian) = 2457361.93803993 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6498.5360 6.5657883e+10 0.036801386 0.031841741 98.759295 26.237676 6500.7438 6.1007774e+10 0.045379430 0.032507506 98.809710 26.127349 6502.9516 5.5678317e+10 0.054094224 0.033173271 98.861689 26.006061 6505.1595 5.0887553e+10 0.063149981 0.033839037 98.913668 25.884773 6507.3673 4.6529758e+10 0.072600932 0.034504802 98.960581 25.775309 6509.5751 4.2993460e+10 0.082650679 0.035170567 99.006793 25.667484 6511.7830 3.9970135e+10 0.093296677 0.035836333 99.054085 25.559664 6513.9908 3.6934331e+10 0.10438219 0.036502098 99.104139 25.451854 6516.1986 3.4091860e+10 0.11599334 0.037167864 99.154192 25.344043 6518.4065 3.1360873e+10 0.12806305 0.037833629 99.205565 25.229975 6520.6143 2.8710159e+10 0.14053608 0.038499394 99.257547 25.113019 6522.8221 2.6174924e+10 0.15110561 0.039132533 99.307359 24.999499 6525.0300 2.3825604e+10 0.15870629 0.039778796 99.353564 24.891689 6527.2378 2.1833248e+10 0.16445419 0.040889103 99.399770 24.783879 6529.4456 2.0136693e+10 0.16935303 0.042945607 99.445973 24.676069 6531.6534 1.8648326e+10 0.17390564 0.046179774 99.492175 24.568258 6533.8613 1.7355576e+10 0.17675091 0.047885603 99.538379 24.461144 6536.0691 1.6162135e+10 0.17708561 0.047852331 99.584591 24.357170 6538.2769 1.5048323e+10 0.17823802 0.049291533 99.630802 24.253197 6540.4848 1.3972621e+10 0.17732343 0.051083118 99.677854 24.139102 6542.6926 1.2854058e+10 0.17485708 0.051265186 99.725503 24.017814 6544.9004 1.1789546e+10 0.17283871 0.052374790 99.772753 23.901309 6547.1083 1.0846577e+10 0.17046714 0.053328532 99.818956 23.797349 6549.3161 1.0016766e+10 0.16805487 0.054288397 99.865158 23.693389 6551.5239 9.3088657e+09 0.16621140 0.055419654 99.911363 23.586816 6553.7317 8.6786279e+09 0.16398473 0.054967228 99.957568 23.479005 6555.9396 8.0988379e+09 0.16153679 0.054063895 100.00389 23.370448 6558.1474 7.5268822e+09 0.15955766 0.053113695 100.05154 23.253492 6560.3552 6.9452531e+09 0.15688759 0.051954016 100.09919 23.136537 6562.5631 6.4108796e+09 0.15417585 0.050344123 100.14275 23.026640 6564.7709 5.9616694e+09 0.15158143 0.048422226 100.18511 22.918815 6566.9787 5.5820932e+09 0.14927396 0.046629220 100.22815 22.811672 6569.1866 5.2542685e+09 0.14690440 0.044864567 100.27435 22.707712 6571.3944 4.9540347e+09 0.14499883 0.044395560 100.32055 22.603753 6573.6022 4.6537026e+09 0.14247775 0.043174215 100.36759 22.489758 6575.8101 4.3400282e+09 0.13985626 0.041561973 100.41524 22.368470 6578.0179 4.0183892e+09 0.13713246 0.038621379 100.46146 22.251871 6580.2257 3.7306941e+09 0.13411829 0.036312164 100.50381 22.147911 6582.4335 3.4995905e+09 0.13117417 0.035175816 100.54617 22.043951 6584.6414 3.3080955e+09 0.12810915 0.034166132 100.58852 21.939982 6586.8492 3.1401272e+09 0.12510738 0.033160319 100.63088 21.836008 6589.0570 2.9724836e+09 0.12244654 0.032932830 100.67365 21.730708 6591.2649 2.8005965e+09 0.11973473 0.028903043 100.72130 21.609420 6593.4727 2.6288950e+09 0.11769210 0.026662760 100.76895 21.488131 6595.6805 2.4638296e+09 0.11528682 0.025694143 100.81253 21.380153 6597.8884 2.3201973e+09 0.11343951 0.025442397 100.85488 21.276193 6600.0962 2.1945713e+09 0.11281878 0.025187612 100.89724 21.172234 6602.3040 2.0860909e+09 0.11223124 0.027257200 100.93959 21.068274 6604.5118 1.9866747e+09 0.11108336 0.026375193 100.98195 20.964315 6606.7197 1.8866754e+09 0.11027569 0.026210730 101.02734 20.852898 6608.9275 1.7825206e+09 0.10738821 0.023707848 101.07499 20.735941 6611.1353 1.6770436e+09 0.10457836 0.024872152 101.12123 20.622427 6613.3432 1.5823490e+09 0.10364104 0.023699499 101.16359 20.518454 6615.5510 1.4997815e+09 0.10222134 0.023268484 101.20595 20.414480 6617.7588 1.4269797e+09 0.10125651 0.023690836 101.24831 20.310517 6619.9667 1.3648675e+09 0.10044371 0.024759153 101.29066 20.206558 6622.1745 1.3076373e+09 0.098934139 0.024711550 101.33309 20.101673 6624.3823 1.2449517e+09 0.096978280 0.025066963 101.37640 19.984716 6626.5901 1.1788813e+09 0.095192576 0.025839000 101.41972 19.867759 6628.7980 1.1119119e+09 0.093670800 0.026027082 101.46230 19.760715 6631.0058 1.0528204e+09 0.091723449 0.025931356 101.50466 19.656755 6633.2136 1.0053237e+09 0.090051597 0.026189552 101.54789 19.550645 6635.4215 9.5893359e+08 0.088207983 0.026462993 101.59554 19.433688 6637.6293 9.0916791e+08 0.086789174 0.025853200 101.64318 19.316731 6639.8371 8.6110994e+08 0.086494027 0.025328865 101.68300 19.210901 6642.0450 8.1466485e+08 0.086884539 0.025153536 101.72151 19.106927 6644.2528 7.7577645e+08 0.086068770 0.025370927 101.76127 18.999577 6646.4606 7.3914441e+08 0.085217614 0.026158580 101.80458 18.882620 6648.6685 6.9945836e+08 0.084276715 0.027411748 101.84790 18.765664 6650.8763 6.6715766e+08 0.083919318 0.026455843 101.89030 18.661075 6653.0841 6.3649962e+08 0.083627159 0.027568606 101.93266 18.557115 6655.2919 6.1339729e+08 0.082246448 0.027730847 101.97535 18.448549 6657.4998 5.8682196e+08 0.080510561 0.029480832 102.01867 18.331592 6659.7076 5.5624705e+08 0.079108064 0.031686992 102.06176 18.215232 6661.9154 5.2994409e+08 0.077642752 0.033001200 102.10027 18.111272 6664.1233 5.0270917e+08 0.076354721 0.031755071 102.13878 18.007313 6666.3311 4.8230009e+08 0.076318184 0.026973113 102.17944 17.897521 6668.5389 4.5924414e+08 0.075265470 0.027947684 102.22276 17.780565 6670.7468 4.3749275e+08 0.075017114 0.026982673 102.26594 17.665968 6672.9546 4.1894213e+08 0.074569565 0.027432894 102.30830 17.565845 6675.1624 4.0005912e+08 0.072818181 0.030109442 102.35066 17.465723 6677.3702 3.8346344e+08 0.070772377 0.031831875 102.39354 17.356453 6679.5781 3.6617094e+08 0.070464611 0.029790075 102.43685 17.239497 6681.7859 3.4729590e+08 0.071235820 0.030260294 102.47904 17.125592 6683.9937 3.3398189e+08 0.071345777 0.032644913 102.51754 17.021632 6686.2016 3.2228438e+08 0.070547142 0.033878359 102.55605 16.917672 6688.4094 3.1231128e+08 0.067867681 0.033879693 102.59762 16.808188 6690.6172 3.0247674e+08 0.066422638 0.033045129 102.64094 16.695563 6692.8251 2.8517650e+08 0.065701520 0.031807238 102.68425 16.581513 6695.0329 2.7398999e+08 0.065198270 0.029853433 102.72757 16.464556 6697.2407 2.5971334e+08 0.064734483 0.030121729 102.77071 16.347866 6699.4485 2.4931138e+08 0.063412175 0.031176550 102.80537 16.243893 6701.6564 2.4249444e+08 0.061653923 0.032372541 102.84003 16.139919 6703.8642 2.3361737e+08 0.061849143 0.035837763 102.87835 16.032280 6706.0720 2.2914278e+08 0.061848851 0.038571785 102.92167 15.919656 6708.2799 2.1933474e+08 0.061487202 0.040348347 102.96499 15.806532 6710.4877 2.0746294e+08 0.060140157 0.040591956 103.00830 15.689575 6712.6955 1.9689211e+08 0.058114573 0.043121328 103.05162 15.572618 6714.9034 1.8511390e+08 0.056154134 0.047371323 103.09494 15.459156 6717.1112 1.7610450e+08 0.054128124 0.049867391 103.13826 15.346531 6719.3190 1.6713765e+08 0.052135833 0.051066744 103.17726 15.238222 6721.5269 1.6142509e+08 0.052487277 0.050462642 103.21191 15.134263 6723.7347 1.5750398e+08 0.050778579 0.049778689 103.24657 15.030303 6725.9425 1.5082055e+08 0.046800759 0.040987277 103.28902 14.918537 6728.1503 1.4390924e+08 0.046095885 0.039841186 103.33234 14.805913 6730.3582 1.3753817e+08 0.044655999 0.040870003 103.37309 14.693288 6732.5660 1.3039723e+08 0.043253927 0.043844409 103.41208 14.580662 6734.7738 1.2680434e+08 0.043078653 0.049307040 103.45230 14.466807 6736.9817 1.2438753e+08 0.044883441 0.054066248 103.49561 14.349851 6739.1895 1.1754841e+08 0.045656840 0.063058458 103.53893 14.232894 6741.3973 1.1022402e+08 0.044298023 0.066891887 103.57803 14.120146 6743.6052 1.0210351e+08 0.040135577 0.075129805 103.61702 14.007505 6745.8130 91946125. 0.038489440 0.078908659 103.65889 13.894875 6748.0208 85004178. 0.034554366 0.067126417 103.70221 13.782250 6750.2286 77914510. 0.032066770 0.072394556 103.74398 13.669625 6752.4365 72620745. 0.029505767 0.073629391 103.78296 13.557001 6754.6443 74133409. 0.028124910 0.075177344 103.82216 13.444159 6756.8521 73225409. 0.025480942 0.076359586 103.86548 13.327203 6759.0600 71456014. 0.026462172 0.075834426 103.90880 13.210246 6761.2678 67264581. 0.027844109 0.077990350 103.94890 13.096501 6763.4756 62017270. 0.032852587 0.077886302 103.98789 12.983876 6765.6835 57628209. 0.035119612 0.079655961 104.02688 12.871251 6767.8913 55786136. 0.032814148 0.080977753 104.06586 12.758626 6770.0991 53701748. 0.028134945 0.087120110 104.10484 12.646002 6772.3070 51196323. 0.023510815 0.092475069 104.14383 12.533377 6774.5148 48764218. 0.016089711 0.097830029 104.18282 12.420752 6776.7226 48905076. 0.014520507 0.10318499 104.22534 12.308127 6778.9304 52544417. 0.015760188 0.10853995 104.26865 12.195502