# # 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 = 54.488707 km # Date (UTC) = 2012-01-21T09:38:10.231 # Date (julian) = 2455947.90150730 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6499.1823 1.8604542e+11 0.044434006 0.032036625 103.33786 50.001156 6501.5722 1.4629249e+11 0.053656949 0.032757289 103.48791 49.832349 6503.9620 1.1648507e+11 0.062890514 0.033477952 103.62583 49.674465 6506.3519 9.5246605e+10 0.072294925 0.034198616 103.74908 49.529775 6508.7418 7.9034988e+10 0.081911768 0.034919280 103.88807 49.370930 6511.1317 6.6949014e+10 0.091945927 0.035639944 104.03812 49.202121 6513.5216 5.7547254e+10 0.10250800 0.036360608 104.16170 49.057128 6515.9115 5.0559383e+10 0.11382756 0.037081272 104.28745 48.909515 6518.3014 4.5293778e+10 0.12596995 0.037801936 104.43122 48.740739 6520.6912 4.0246803e+10 0.13853033 0.038522600 104.57175 48.571945 6523.0811 3.5590939e+10 0.14855338 0.039199221 104.70930 48.403136 6525.4710 3.1787160e+10 0.15518758 0.039728459 104.82872 48.256569 6527.8609 2.8646295e+10 0.16136282 0.041341499 104.94772 48.110526 6530.2508 2.5938420e+10 0.16681591 0.044179799 105.08527 47.941716 6532.6407 2.3428018e+10 0.17135405 0.047219410 105.21384 47.783922 6535.0306 2.1193345e+10 0.17436831 0.048211038 105.33173 47.639234 6537.4205 1.9444500e+10 0.17582120 0.048883450 105.44646 47.494546 6539.8103 1.7988457e+10 0.17674658 0.050624519 105.55900 47.349856 6542.2002 1.6508336e+10 0.17497922 0.051078254 105.68513 47.187690 6544.5901 1.5100979e+10 0.17295500 0.052123055 105.81408 47.021898 6546.9800 1.3862636e+10 0.17063163 0.053270904 105.92662 46.877208 6549.3699 1.2747193e+10 0.16805511 0.054343219 106.04401 46.726270 6551.7598 1.1752223e+10 0.16616434 0.055502441 106.17531 46.557461 6554.1497 1.0803721e+10 0.16360362 0.054835521 106.29070 46.404561 6556.5395 9.9227829e+09 0.16137924 0.053933803 106.39787 46.259871 6558.9294 9.2537139e+09 0.15856285 0.052447319 106.50505 46.115181 6561.3193 8.6517199e+09 0.15561889 0.051215330 106.61223 45.970491 6563.7092 8.0317175e+09 0.15273742 0.049107987 106.73595 45.797665 6566.0991 7.4419388e+09 0.15023090 0.047126832 106.85512 45.632581 6568.4890 6.8866334e+09 0.14849347 0.045322180 106.96230 45.487891 6570.8789 6.4266826e+09 0.14667261 0.044553456 107.06700 45.343201 6573.2687 6.0344525e+09 0.14450793 0.043441820 107.16882 45.198512 6575.6586 5.6907112e+09 0.14178694 0.041713894 107.27064 45.053822 6578.0485 5.3720367e+09 0.13884990 0.038573000 107.37246 44.909132 6580.4384 5.0402611e+09 0.13573013 0.036115605 107.48666 44.746846 6582.8283 4.7046026e+09 0.13306679 0.035068394 107.60324 44.581175 6585.2182 4.3770096e+09 0.13030695 0.033796346 107.70506 44.436487 6587.6081 4.0912851e+09 0.12755843 0.033293093 107.80547 44.291799 6589.9979 3.8623909e+09 0.12440752 0.031066137 107.90193 44.147109 6592.3878 3.6697415e+09 0.12045638 0.027696820 107.99839 44.000285 6594.7777 3.5110874e+09 0.11669236 0.025745592 108.09485 43.850236 6597.1676 3.2979058e+09 0.11330424 0.025669836 108.19986 43.690207 6599.5575 3.0712859e+09 0.11175539 0.024963261 108.31240 43.521397 6601.9474 2.8584155e+09 0.11175423 0.027491853 108.40995 43.375081 6604.3373 2.6870713e+09 0.11067315 0.026271534 108.50641 43.230393 6606.7272 2.5744048e+09 0.10997845 0.026197292 108.60287 43.085703 6609.1170 2.4501181e+09 0.10694959 0.023740698 108.69825 42.941014 6611.5069 2.3221020e+09 0.10425026 0.024635187 108.78935 42.796324 6613.8968 2.2013048e+09 0.10330222 0.023902633 108.88045 42.651634 6616.2867 2.0923901e+09 0.10182960 0.023327296 108.97155 42.506944 6618.6766 1.9911647e+09 0.10116642 0.024281698 109.06516 42.359746 6621.0665 1.9009111e+09 0.10026876 0.025067414 109.16162 42.209698 6623.4564 1.8032171e+09 0.098535726 0.024660899 109.26023 42.048353 6625.8462 1.7024399e+09 0.097170586 0.026407427 109.36022 41.879675 6628.2361 1.6055556e+09 0.095321065 0.025798966 109.45135 41.734918 6630.6260 1.5202715e+09 0.093550354 0.025929844 109.54245 41.590229 6633.0159 1.4489145e+09 0.091854581 0.026155030 109.63355 41.445539 6635.4058 1.3791089e+09 0.089992475 0.026460642 109.72320 41.300849 6637.7957 1.3073530e+09 0.088466645 0.025771714 109.80894 41.156160 6640.1856 1.2386920e+09 0.088093959 0.025247948 109.89468 41.011470 6642.5754 1.1746098e+09 0.087733773 0.025175245 109.98042 40.866779 6644.9653 1.1224626e+09 0.086329905 0.025447938 110.06617 40.722089 6647.3552 1.0759767e+09 0.084708445 0.026624805 110.15191 40.577399 6649.7451 1.0276813e+09 0.083573501 0.026606594 110.23765 40.429107 6652.1350 9.7770690e+08 0.083073675 0.027287663 110.32339 40.279060 6654.5249 9.3057203e+08 0.082342881 0.027812622 110.40481 40.133332 6656.9148 8.9087007e+08 0.080503237 0.028826302 110.48520 39.988643 6659.3047 8.5791037e+08 0.079001263 0.031771048 110.57061 39.843976 6661.6945 8.2038333e+08 0.077652055 0.032888693 110.65693 39.697527 6664.0844 7.7493350e+08 0.076386062 0.031897181 110.75071 39.528717 6666.4743 7.3012538e+08 0.076564619 0.027001021 110.83814 39.371350 6668.8642 6.8512362e+08 0.075505401 0.028235527 110.91852 39.226661 6671.2541 6.5044411e+08 0.075617103 0.026868969 110.99890 39.081972 6673.6440 6.2085979e+08 0.075006922 0.028422322 111.07929 38.937285 6676.0339 5.8896407e+08 0.072704759 0.031735544 111.15967 38.792596 6678.4237 5.6378577e+08 0.071618140 0.030653197 111.24005 38.647906 6680.8136 5.3490888e+08 0.072326349 0.029617113 111.32044 38.503216 6683.2035 5.1233709e+08 0.072930933 0.031486835 111.40077 38.358527 6685.5934 4.9250030e+08 0.072483670 0.033331616 111.47579 38.213836 6687.9833 4.6885821e+08 0.070036446 0.033794511 111.55159 38.069145 6690.3732 4.5107966e+08 0.067913054 0.033073098 111.63197 37.924456 6692.7631 4.2919283e+08 0.066876504 0.031879232 111.71086 37.779766 6695.1529 4.1221664e+08 0.066169746 0.029831379 111.78589 37.635077 6697.5428 3.9783355e+08 0.065377863 0.030159962 111.86091 37.490387 6699.9327 3.8237194e+08 0.063701810 0.030729799 111.93594 37.345697 6702.3226 3.6889945e+08 0.062124876 0.033134332 112.01779 37.187840 6704.7125 3.4985849e+08 0.062597289 0.036527425 112.10532 37.019030 6707.1024 3.2999494e+08 0.062479158 0.040172161 112.18101 36.873052 6709.4923 3.1249335e+08 0.061892595 0.040819439 112.25603 36.728364 6711.8822 2.9653102e+08 0.059932929 0.041695879 112.33106 36.583674 6714.2720 2.8383078e+08 0.057852011 0.047323860 112.40493 36.438983 6716.6619 2.7276020e+08 0.056015805 0.049376313 112.47460 36.294294 6719.0518 2.6031657e+08 0.053683709 0.051320615 112.54613 36.149604 6721.4417 2.5006735e+08 0.054309476 0.050436984 112.62116 36.004914 6723.8316 2.3873957e+08 0.052700886 0.049832732 112.69360 35.860225 6726.2215 2.3077589e+08 0.048788297 0.040953365 112.76326 35.715535 6728.6114 2.2568597e+08 0.048274831 0.040494590 112.83623 35.570845 6731.0012 2.1651418e+08 0.046669336 0.041752496 112.91125 35.426156 6733.3911 2.0782195e+08 0.045534782 0.046047854 112.99097 35.263373 6735.7810 1.9760402e+08 0.046816965 0.050122537 113.07050 35.098197 6738.1709 1.9070209e+08 0.048427920 0.058261977 113.14016 34.953507 6740.5608 1.8425681e+08 0.048002635 0.065008370 113.20983 34.808818 6742.9507 1.7665734e+08 0.044661769 0.070927246 113.27949 34.664130 6745.3406 1.6806181e+08 0.041543880 0.078710055 113.34692 34.521684 6747.7304 1.5960587e+08 0.037452726 0.067109697 113.41122 34.382353 6750.1203 1.5154019e+08 0.035096638 0.072209604 113.48490 34.226754 6752.5102 1.4182392e+08 0.032577509 0.073544058 113.56616 34.057978 6754.9001 1.3667864e+08 0.031084929 0.074765990 113.63127 33.912149 6757.2900 1.3424658e+08 0.028744712 0.075860011 113.69604 33.767458 6759.6799 1.3000660e+08 0.029994022 0.075984020 113.76570 33.622769 6762.0698 1.2575332e+08 0.034038922 0.077938310 113.83419 33.478079 6764.4597 1.2397093e+08 0.037435022 0.079505306 113.89849 33.333392 6766.8495 1.2083914e+08 0.038168905 0.081635414 113.96660 33.182368 6769.2394 1.1801073e+08 0.033231212 0.085034966 114.04162 33.019810 6771.6293 1.1234553e+08 0.029143019 0.090831491 114.10856 32.870744 6774.0192 1.0619971e+08 0.025072817 0.096628016 114.17286 32.726055 6776.4091 1.0482715e+08 0.020830788 0.10242454 114.23717 32.581365 6778.7990 1.0174444e+08 0.016644545 0.10822107 114.30173 32.436122 6781.1889 96712750. 0.012532210 0.11401759 114.37675 32.267311 6783.5787 88907358. 0.0085546470 0.11981412 114.44724 32.110987 6785.9686 81791051. 0.0045904576 0.12561064 114.51154 31.971657 6788.3585 73200118. 0.00077848277 0.13140717 114.58183 31.815893 6790.7484 66190082. -0.0030288883 0.13720369 114.65686 31.647084 6793.1383 64333647. -0.0071462778 0.14300022 114.72161 31.501383 6795.5282 63159359. -0.011273318 0.14879674 114.78542 31.357187 6797.9181 65881150. -0.015644488 0.15459327 114.84437 31.217856 6800.3079 67109291. -0.019834214 0.16038979 114.90554 31.071866 6802.6978 63001337. -0.023518940 0.16618632 114.97431 30.903057 6805.0877 61199943. -0.027184326 0.17198284 115.04028 30.749373 6807.4776 59035943. -0.030485522 0.17777937 115.10458 30.604707 6809.8675 56449577. -0.033038075 0.18357589 115.17228 30.446442 6812.2574 54805003. -0.034385113 0.18937242 115.23947 30.286755 6814.6473 48849889. -0.019333631 0.19516894 115.29842 30.142067 6817.0371 48449937. -0.038696908 0.20096547 115.36026 29.992114 6819.4270 51573149. -0.074573267 0.20676199 115.42903 29.829557