# # 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 = 56.080642 km # Date (UTC) = 2014-01-05T09:44:00.258 # Date (julian) = 2456662.90555854 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6496.8908 5.4497427e+10 0.031546785 0.031345649 108.52200 35.723990 6499.0012 5.0088124e+10 0.038775144 0.031982033 108.58178 35.622617 6501.1116 4.6563705e+10 0.046351492 0.032618417 108.64067 35.523245 6503.2220 4.3506390e+10 0.054361277 0.033254800 108.70008 35.421857 6505.3324 4.0197263e+10 0.062699154 0.033891184 108.76219 35.310062 6507.4428 3.6797896e+10 0.071392507 0.034527568 108.82429 35.198267 6509.5532 3.3434233e+10 0.080467228 0.035163952 108.88949 35.086473 6511.6636 3.0477550e+10 0.090094870 0.035800335 108.95574 34.974679 6513.7740 2.7869988e+10 0.10031869 0.036436719 109.02062 34.861510 6515.8844 2.5443359e+10 0.11107304 0.037073103 109.08273 34.745573 6517.9948 2.3234316e+10 0.12238194 0.037709486 109.14484 34.629637 6520.1052 2.1369184e+10 0.13438961 0.038345870 109.20399 34.528888 6522.2156 1.9895868e+10 0.14655347 0.038973699 109.26288 34.429516 6524.3260 1.8622347e+10 0.15398900 0.039542759 109.32241 34.327659 6526.4364 1.7388345e+10 0.16040016 0.040125552 109.38453 34.215849 6528.5467 1.6113898e+10 0.16640060 0.041876218 109.44664 34.104039 6530.6571 1.4816095e+10 0.17131385 0.044748682 109.50876 33.992240 6532.7675 1.3640216e+10 0.17594370 0.047325387 109.57086 33.880445 6534.8779 1.2585662e+10 0.17793955 0.048190148 109.63042 33.773245 6536.9883 1.1730793e+10 0.17793867 0.048674779 109.68563 33.673873 6539.0987 1.1025924e+10 0.17669070 0.049763123 109.74083 33.574502 6541.2091 1.0377178e+10 0.17479981 0.051258715 109.79784 33.467020 6543.3195 9.7290938e+09 0.17275158 0.051465749 109.85581 33.355224 6545.4299 9.0710410e+09 0.17082609 0.052459418 109.91476 33.243429 6547.5403 8.4292946e+09 0.16910406 0.053492828 109.97687 33.131634 6549.6507 7.8289589e+09 0.16740284 0.054629382 110.03898 33.019839 6551.7611 7.3046837e+09 0.16577842 0.055502902 110.09541 32.918262 6553.8715 6.8695254e+09 0.16364327 0.054896988 110.15062 32.818890 6555.9819 6.4977903e+09 0.16156249 0.054028359 110.20611 32.718208 6558.0923 6.1315676e+09 0.15995269 0.053160685 110.26408 32.606413 6560.2027 5.7510547e+09 0.15769740 0.052091587 110.32205 32.494618 6562.3131 5.3641130e+09 0.15524386 0.050582023 110.38002 32.382811 6564.4234 5.0083473e+09 0.15276202 0.048579692 110.43800 32.270999 6566.5338 4.6863841e+09 0.15083741 0.046880893 110.49420 32.162615 6568.6442 4.4352662e+09 0.14906146 0.045179458 110.54573 32.063244 6570.7546 4.2223657e+09 0.14751647 0.044604917 110.59725 31.963873 6572.8650 4.0411456e+09 0.14564124 0.043734780 110.65238 31.857563 6574.9754 3.8526316e+09 0.14340150 0.042386515 110.71034 31.745768 6577.0858 3.6487674e+09 0.14074377 0.040085585 110.76831 31.633973 6579.1962 3.4463281e+09 0.13758435 0.036962636 110.82628 31.522178 6581.3066 3.2487120e+09 0.13503779 0.035503767 110.88425 31.410383 6583.4170 3.0804100e+09 0.13295364 0.034810604 110.93752 31.307635 6585.5274 2.9429695e+09 0.13098533 0.033549140 110.98905 31.208264 6587.6378 2.8235721e+09 0.12956912 0.033299677 111.04060 31.108754 6589.7482 2.7097662e+09 0.12784892 0.031561667 111.09443 30.996959 6591.8586 2.5844524e+09 0.12572105 0.028233116 111.14825 30.885164 6593.9690 2.4499814e+09 0.12376288 0.026201380 111.20455 30.773359 6596.0794 2.3267901e+09 0.12140431 0.025726913 111.26253 30.661547 6598.1898 2.2056917e+09 0.11992747 0.025316572 111.31975 30.549738 6600.3001 2.0913134e+09 0.11964069 0.025606917 111.37358 30.437943 6602.4105 1.9822732e+09 0.11921020 0.027166296 111.42741 30.326147 6604.5209 1.8838654e+09 0.11827475 0.026380589 111.47948 30.226690 6606.6313 1.8038277e+09 0.11757687 0.026369489 111.53100 30.131000 6608.7417 1.7367408e+09 0.11481717 0.023712760 111.58264 30.034519 6610.8521 1.6718697e+09 0.11187254 0.024817155 111.63647 29.922724 6612.9625 1.6062584e+09 0.11071451 0.023601602 111.69029 29.810929 6615.0729 1.5336817e+09 0.10951339 0.023253775 111.74412 29.699133 6617.1833 1.4544045e+09 0.10828016 0.023500021 111.79795 29.587338 6619.2937 1.3868923e+09 0.10754721 0.024596777 111.85046 29.478261 6621.4041 1.3284071e+09 0.10649837 0.024955511 111.89831 29.378889 6623.5145 1.2866960e+09 0.10453969 0.024682432 111.94616 29.279517 6625.6249 1.2452223e+09 0.10299737 0.026143266 111.99701 29.175982 6627.7353 1.1967527e+09 0.10092661 0.025600833 112.05084 29.068311 6629.8457 1.1525086e+09 0.099516170 0.025956207 112.10468 28.960282 6631.9561 1.0991745e+09 0.097875260 0.026027882 112.15851 28.848488 6634.0664 1.0501489e+09 0.096654735 0.026331690 112.21234 28.736694 6636.1768 9.9795536e+08 0.095557827 0.026481077 112.26338 28.624899 6638.2872 9.4876613e+08 0.094868281 0.025659128 112.31307 28.513104 6640.3976 9.0730267e+08 0.095218968 0.025222001 112.36228 28.405442 6642.5080 8.6946814e+08 0.095265300 0.025172486 112.41013 28.309750 6644.6184 8.4395889e+08 0.094294575 0.025410444 112.45797 28.214058 6646.7288 8.2183430e+08 0.093152290 0.026297405 112.50681 28.109678 6648.8392 7.9684323e+08 0.091949160 0.027526053 112.55650 27.997883 6650.9496 7.6361920e+08 0.091595312 0.026472628 112.60670 27.886088 6653.0600 7.2870457e+08 0.091279357 0.027556293 112.66053 27.774293 6655.1704 6.9608994e+08 0.090018595 0.027680622 112.71436 27.662498 6657.2808 6.7116642e+08 0.088151184 0.029226812 112.76524 27.553640 6659.3912 6.4730060e+08 0.086588630 0.031752998 112.81493 27.445986 6661.5016 6.1813445e+08 0.085207459 0.032790411 112.86461 27.337114 6663.6120 5.9223268e+08 0.083864568 0.032313622 112.91430 27.225319 6665.7224 5.6642475e+08 0.083633062 0.027363517 112.96399 27.113523 6667.8328 5.4588450e+08 0.082854222 0.027409343 113.01206 27.015873 6669.9431 5.2889024e+08 0.082014072 0.027387023 113.05992 26.920169 6672.0535 5.0899132e+08 0.081576846 0.026910634 113.10806 26.821853 6674.1639 4.9234366e+08 0.080502140 0.029093082 113.15775 26.710058 6676.2743 4.7500121e+08 0.078187764 0.031890529 113.20744 26.598263 6678.3847 4.6137524e+08 0.077263673 0.030679293 113.25712 26.489562 6680.4951 4.4678193e+08 0.077849626 0.029548333 113.30681 26.381907 6682.6055 4.2937849e+08 0.078606528 0.030887178 113.35512 26.272878 6684.7159 4.0996718e+08 0.078709797 0.032690421 113.40067 26.161084 6686.8263 3.8775585e+08 0.077477799 0.034241839 113.44621 26.049290 6688.9367 3.7333849e+08 0.074752854 0.034001411 113.49556 25.941291 6691.0471 3.5885466e+08 0.073892315 0.032990153 113.54524 25.833636 6693.1575 3.4506035e+08 0.073120038 0.031550062 113.59493 25.725981 6695.2679 3.3155345e+08 0.072663081 0.029810268 113.64462 25.618327 6697.3783 3.1872205e+08 0.072068054 0.030139136 113.69431 25.510313 6699.4887 3.0769891e+08 0.070673577 0.031139534 113.74399 25.398518 6701.5991 2.9612563e+08 0.068932639 0.032288436 113.79368 25.286723 6703.7095 2.8395165e+08 0.069044601 0.035450514 113.84058 25.177709 6705.8198 2.7430226e+08 0.069031723 0.038126130 113.88613 25.070054 6707.9302 2.6224787e+08 0.068713234 0.040053570 113.93274 24.962396 6710.0406 2.5296662e+08 0.067525702 0.040504449 113.98243 24.854724 6712.1510 2.4388174e+08 0.065358002 0.042110370 114.03213 24.747053 6714.2614 2.3519509e+08 0.063219214 0.047323062 114.07833 24.635911 6716.3718 2.3037227e+08 0.061289887 0.048949013 114.12388 24.524116 6718.4822 2.1726156e+08 0.059102330 0.050563423 114.16943 24.414088 6720.5926 2.0892957e+08 0.058703705 0.050351103 114.21497 24.306434 6722.7030 1.9978762e+08 0.058039299 0.049736113 114.26052 24.198780 6724.8134 1.9216306e+08 0.054214652 0.043134299 114.30606 24.091126 6726.9238 1.8477051e+08 0.052149168 0.040959699 114.35161 23.983472 6729.0342 1.7905351e+08 0.051789987 0.041022644 114.39962 23.875817 6731.1446 1.7433763e+08 0.049914828 0.042037758 114.44931 23.768163 6733.2550 1.6777777e+08 0.048707837 0.045308615 114.49824 23.659759 6735.3654 1.6273408e+08 0.049157517 0.049681294 114.54379 23.547963 6737.4758 1.5482216e+08 0.050569007 0.055651105 114.58934 23.436167 6739.5862 1.5331883e+08 0.050571058 0.063543891 114.63488 23.327544 6741.6965 1.5103828e+08 0.048548888 0.067745283 114.68043 23.219889 6743.8069 1.4851747e+08 0.043839762 0.076491039 114.72826 23.106839 6745.9173 1.3845033e+08 0.042318554 0.078952526 114.78031 22.983803 6748.0277 1.2966448e+08 0.038017240 0.067162781 114.83082 22.864421 6750.1381 1.2603576e+08 0.035045921 0.072239982 114.87637 22.756767 6752.2485 1.2249170e+08 0.032002443 0.073846896 114.92191 22.649112 6754.3589 1.2541104e+08 0.030388585 0.075636298 114.96405 22.541458 6756.4693 1.1923945e+08 0.027507671 0.075374500 115.00546 22.433804 6758.5797 1.1536852e+08 0.027369097 0.074931173 115.04855 22.326143 6760.6901 1.1069031e+08 0.027433435 0.077377247 115.09411 22.218472 6762.8005 1.0393268e+08 0.031900513 0.076759594 115.13968 22.110762 6764.9109 99684997. 0.034023571 0.079526923 115.19167 21.987880 6767.0213 93772657. 0.033523789 0.081951943 115.24372 21.864844 6769.1317 93080767. 0.028437182 0.084773617 115.28641 21.755334 6771.2421 90602190. 0.024259795 0.089892250 115.32781 21.647679 6773.3525 91249436. 0.020203182 0.095010884 115.37416 21.532884 6775.4629 86854949. 0.015986992 0.10012952 115.42622 21.409848 6777.5732 81074324. 0.011659084 0.10524815 115.47453 21.292211 6779.6836 76687821. 0.0073309632 0.11036678 115.51594 21.184556 6781.7940 72739000. 0.0029433787 0.11548542 115.55734 21.076901 6783.9044 72390490. -0.0012551791 0.12060405 115.60262 20.969247 6786.0148 70727997. -0.0056650235 0.12572268 115.64817 20.861592 6788.1252 67447008. -0.010428161 0.13084132 115.69464 20.745928 6790.2356 62910592. -0.015748177 0.13595995 115.74196 20.622891 6792.3460 60555154. -0.021475249 0.14107858 115.78856 20.507812 6794.4564 59566305. -0.028161046 0.14619722 115.83411 20.404298 6796.5668 57304625. -0.039169217 0.15131585 115.87966 20.300734 6798.6772 55377590. -0.083839329 0.15643448 115.92696 20.177897 6800.7876 51199032. -0.056334149 0.16155312 115.97429 20.054862 6802.8980 48518351. 0.019792544 0.16667175 116.02161 19.931825