# # 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 = 34.943529 km # Date (UTC) = 2017-01-17T09:57:06.499 # Date (julian) = 2457770.91465856 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6513.0278 5.2446310e+10 0.11872337 0.036211714 -27.917163 52.361206 6514.3502 4.8299357e+10 0.12548031 0.036610476 -28.000188 52.284110 6515.6726 4.4711592e+10 0.13232687 0.037009238 -28.083099 52.207015 6516.9950 4.1412233e+10 0.13922857 0.037407999 -28.163160 52.129920 6518.3174 3.8680409e+10 0.14624914 0.037806761 -28.243221 52.052825 6519.6397 3.6219101e+10 0.15333066 0.038205523 -28.323281 51.975730 6520.9621 3.3868997e+10 0.16044601 0.038604285 -28.401366 51.900610 6522.2845 3.1486691e+10 0.16676509 0.038991755 -28.478462 51.826480 6523.6069 2.9150267e+10 0.17001270 0.039329532 -28.555557 51.752351 6524.9293 2.6955072e+10 0.17419560 0.039757094 -28.633523 51.677349 6526.2517 2.4947463e+10 0.17556769 0.039931936 -28.713583 51.600253 6527.5741 2.2983019e+10 0.17885851 0.041133243 -28.793643 51.523158 6528.8964 2.1162747e+10 0.18013206 0.042153632 -28.873703 51.446062 6530.2188 1.9560150e+10 0.18255542 0.044135050 -28.942151 51.377847 6531.5412 1.8204057e+10 0.18340819 0.046016420 -29.009608 51.310391 6532.8636 1.7192788e+10 0.18463957 0.047405637 -29.077065 51.242934 6534.1860 1.6265277e+10 0.18432503 0.047996584 -29.145168 51.175030 6535.5084 1.5278646e+10 0.18359209 0.048003769 -29.222264 51.100900 6536.8308 1.4256871e+10 0.18313214 0.048533797 -29.299359 51.026770 6538.1531 1.3167060e+10 0.18228723 0.049231251 -29.376454 50.952640 6539.4755 1.2215317e+10 0.18136271 0.050219236 -29.451490 50.876450 6540.7979 1.1356592e+10 0.17979607 0.051231054 -29.525620 50.799354 6542.1203 1.0578677e+10 0.17839033 0.051047908 -29.599750 50.722258 6543.4427 9.9066957e+09 0.17671738 0.051498076 -29.670895 50.648267 6544.7651 9.3111892e+09 0.17564622 0.052264981 -29.735757 50.580811 6546.0874 8.8704004e+09 0.17321348 0.052536482 -29.800619 50.513355 6547.4098 8.4992993e+09 0.17234196 0.053443216 -29.865482 50.445898 6548.7322 8.1490068e+09 0.17022135 0.053886311 -29.934680 50.373933 6550.0546 7.7897819e+09 0.16924990 0.054999031 -30.008810 50.296838 6551.3770 7.3663385e+09 0.16711889 0.055368080 -30.082939 50.219744 6552.6994 6.9455931e+09 0.16575248 0.055410735 -30.156787 50.142649 6554.0218 6.5598767e+09 0.16342469 0.054832837 -30.227952 50.065553 6555.3441 6.1976455e+09 0.16181040 0.054564202 -30.299116 49.988457 6556.6665 5.8562343e+09 0.15965012 0.053915134 -30.370281 49.911361 6557.9889 5.5257781e+09 0.15758291 0.053246254 -30.441446 49.834266 6559.3113 5.2005351e+09 0.15501830 0.052352045 -30.512611 49.757171 6560.6337 4.8782652e+09 0.15254956 0.051702962 -30.583775 49.680076 6561.9561 4.5996210e+09 0.15022543 0.050901552 -30.651822 49.606359 6563.2785 4.3560515e+09 0.14744753 0.049606260 -30.714091 49.538902 6564.6008 4.1765406e+09 0.14479161 0.048499297 -30.776359 49.471444 6565.9232 4.0244037e+09 0.14187452 0.047270064 -30.838628 49.403987 6567.2456 3.8553685e+09 0.14009197 0.046409519 -30.903839 49.333219 6568.5680 3.6983943e+09 0.13798650 0.045249541 -30.972038 49.259089 6569.8904 3.5196623e+09 0.13684190 0.044910374 -31.040238 49.184959 6571.2128 3.3543403e+09 0.13513660 0.044445165 -31.107382 49.111654 6572.5351 3.2045688e+09 0.13375929 0.043923690 -31.167055 49.044198 6573.8575 3.0739861e+09 0.13166441 0.042969331 -31.226729 48.976742 6575.1799 2.9837076e+09 0.13006740 0.042194192 -31.286402 48.909285 6576.5023 2.8899657e+09 0.12786364 0.040793231 -31.348372 48.839232 6577.8247 2.7782887e+09 0.12591630 0.038924986 -31.416572 48.762136 6579.1471 2.6544458e+09 0.12357057 0.036989645 -31.484771 48.685040 6580.4695 2.5177202e+09 0.12190753 0.036086905 -31.552971 48.607944 6581.7918 2.3984344e+09 0.12009834 0.035356828 -31.621171 48.530849 6583.1142 2.2816985e+09 0.11846657 0.034963849 -31.689371 48.453755 6584.4366 2.1670822e+09 0.11666306 0.034277671 -31.757571 48.376660 6585.7590 2.0685375e+09 0.11481767 0.033363970 -31.819938 48.304620 6587.0814 1.9787398e+09 0.11331094 0.033176401 -31.877016 48.237164 6588.4038 1.9150781e+09 0.11149744 0.033245091 -31.934094 48.169707 6589.7262 1.8545527e+09 0.10954089 0.031605352 -31.991173 48.102251 6591.0485 1.7940760e+09 0.10706592 0.029147138 -32.053717 48.028334 6592.3709 1.7236204e+09 0.10521453 0.027713245 -32.118952 47.951238 6593.6933 1.6354750e+09 0.10316523 0.026457653 -32.184187 47.874142 6595.0157 1.5490033e+09 0.10130347 0.025625199 -32.249421 47.797047 6596.3381 1.4659663e+09 0.099108345 0.025725737 -32.314656 47.719952 6597.6605 1.3923146e+09 0.097825974 0.025514310 -32.379891 47.642858 6598.9829 1.3241788e+09 0.096544472 0.024937918 -32.445125 47.565763 6600.3052 1.2634403e+09 0.096732764 0.025617382 -32.500413 47.497585 6601.6276 1.2121621e+09 0.096330165 0.027341263 -32.554897 47.430128 6602.9500 1.1802565e+09 0.095443215 0.026705937 -32.609382 47.362670 6604.2724 1.1428296e+09 0.094447660 0.026233013 -32.664418 47.294529 6605.5948 1.0963185e+09 0.094239985 0.027164012 -32.726687 47.217434 6606.9172 1.0429125e+09 0.093356519 0.025855855 -32.788956 47.140340 6608.2395 9.8799289e+08 0.091649849 0.023726038 -32.851225 47.063245 6609.5619 9.4552008e+08 0.089741971 0.023872851 -32.908057 46.991070 6610.8843 9.0680600e+08 0.087736029 0.024847922 -32.962542 46.921018 6612.2067 8.7107732e+08 0.086799795 0.024166313 -33.017027 46.850967 6613.5291 8.3615843e+08 0.086175858 0.023767713 -33.071513 46.780915 6614.8515 8.0980727e+08 0.085331613 0.023353862 -33.132569 46.704917 6616.1739 7.8231765e+08 0.084100758 0.023309586 -33.194838 46.627821 6617.4962 7.5678117e+08 0.083603631 0.023603776 -33.257107 46.550725 6618.8186 7.1480866e+08 0.083129241 0.024388956 -33.317977 46.473630 6620.1410 6.7171520e+08 0.082885454 0.024812638 -33.377281 46.396535 6621.4634 6.3446105e+08 0.082138373 0.024935852 -33.436585 46.319441 6622.7858 6.0324173e+08 0.081219305 0.024548844 -33.495411 46.243303 6624.1082 5.8395853e+08 0.079902781 0.024920211 -33.549895 46.175846 6625.4306 5.5970975e+08 0.079461727 0.025911381 -33.604379 46.108390 6626.7529 5.4034072e+08 0.078210896 0.025631593 -33.658864 46.040933 6628.0753 5.2250182e+08 0.077759663 0.025733676 -33.714529 45.971115 6629.3977 5.0426589e+08 0.077136806 0.026037198 -33.773833 45.894020 6630.7201 4.9163157e+08 0.076230267 0.025930076 -33.833137 45.816924 6632.0425 4.7239125e+08 0.075505807 0.026037439 -33.892441 45.739828 6633.3649 4.5713076e+08 0.074884536 0.026215954 -33.943012 45.671143 6634.6872 4.3961744e+08 0.074212603 0.026376974 -33.992307 45.603686 6636.0096 4.2609591e+08 0.073308009 0.026546012 -34.041602 45.536230 6637.3320 4.1468449e+08 0.072782110 0.025998800 -34.091088 45.468590 6638.6544 3.9642106e+08 0.072290311 0.025643132 -34.150384 45.391502 6639.9768 3.7528845e+08 0.072808950 0.025278949 -34.209689 45.314406 6641.2992 3.5623158e+08 0.073140256 0.025149316 -34.268993 45.237309 6642.6216 3.4011024e+08 0.073067148 0.025177132 -34.326382 45.160214 6643.9439 3.2284846e+08 0.072470959 0.025335142 -34.382721 45.083120 6645.2663 3.1106830e+08 0.072125475 0.025576449 -34.439059 45.006025 6646.5887 2.9460180e+08 0.071518995 0.026224884 -34.493472 44.931564 6647.9111 2.8549550e+08 0.071032871 0.026917477 -34.542767 44.864107 6649.2335 2.7348347e+08 0.070344552 0.027311844 -34.592062 44.796649 6650.5559 2.6444567e+08 0.070250990 0.026382491 -34.641357 44.729192 6651.8783 2.5439424e+08 0.069981230 0.027157219 -34.693604 44.657697 6653.2006 2.4454703e+08 0.069795368 0.027628100 -34.749943 44.580602 6654.5230 2.3575357e+08 0.069121673 0.027813413 -34.806283 44.503508 6655.8454 2.2174130e+08 0.068110235 0.027959540 -34.862174 44.426861 6657.1678 2.1043226e+08 0.067271365 0.029095745 -34.908875 44.359404 6658.4902 2.0203618e+08 0.066544814 0.030930419 -34.955576 44.291947 6659.8126 1.9889768e+08 0.065846534 0.031665097 -35.002277 44.224489 6661.1349 1.9801605e+08 0.064948296 0.032603681 -35.050830 44.154610 6662.4573 1.9227403e+08 0.064316017 0.032787681 -35.107169 44.074550 6663.7797 1.8272918e+08 0.063540324 0.032267134 -35.163507 43.994490 6665.1021 1.7756379e+08 0.063681369 0.028379831 -35.219846 43.914430 6666.4245 1.7183111e+08 0.063531511 0.026991312 -35.273754 43.836800 6667.7469 1.6811090e+08 0.063127153 0.027377797 -35.327128 43.759704 6669.0693 1.5981218e+08 0.062299781 0.028284570 -35.380501 43.682608 6670.3916 1.5020346e+08 0.062578740 0.027147191 -35.430890 43.609825 6671.7140 1.4493011e+08 0.062436937 0.026875524 -35.477591 43.542368 6673.0364 1.3563804e+08 0.062254211 0.027513676 -35.524292 43.474912 6674.3588 1.3007978e+08 0.061413331 0.029257461 -35.570993 43.407456 6675.6812 1.2225767e+08 0.060022514 0.031103073 -35.621651 43.334283 6677.0036 1.1896078e+08 0.058817641 0.032353145 -35.675025 43.257187 6678.3260 1.2000071e+08 0.058564140 0.030718602 -35.728398 43.180091 6679.6483 1.2196819e+08 0.058671480 0.029732013 -35.781118 43.102996 6680.9707 1.2089551e+08 0.059289691 0.029651036 -35.831526 43.025901 6682.2931 1.1384603e+08 0.059671502 0.030648489 -35.881933 42.948807 6683.6155 1.0694065e+08 0.059815612 0.032090594 -35.932341 42.871712 6684.9379 99252259. 0.059727101 0.032701685 -35.979606 42.802790 6686.2603 94010771. 0.059032103 0.033912510 -36.026307 42.735333 6687.5826 95160409. 0.057663947 0.034017951 -36.073008 42.667875 6688.9050 94201402. 0.055894608 0.033994103 -36.119726 42.600372 6690.2274 89910370. 0.055418457 0.033089801 -36.170095 42.523382 6691.5498 87799176. 0.054834975 0.032871545 -36.220504 42.446288 6692.8722 80885887. 0.054377653 0.031752508 -36.270913 42.369193 6694.1946 76328925. 0.053714737 0.030988321 -36.321321 42.292098 6695.5170 74277648. 0.053770573 0.029764514 -36.371729 42.215004 6696.8393 71431854. 0.053397105 0.030024516 -36.422137 42.137909 6698.1617 71431458. 0.052868083 0.030439809 -36.470978 42.063210 6699.4841 68264144. 0.051745914 0.031143733 -36.515092 41.995743 6700.8065 60715650. 0.050101831 0.031265921 -36.559205 41.928275 6702.1289 56097523. 0.048737299 0.032979645 -36.603319 41.860808 6703.4513 58917831. 0.048666667 0.034804455 -36.648745 41.788370 6704.7737 59712155. 0.047738305 0.036557459 -36.696180 41.708323 6706.0960 58901370. 0.044580468 0.038613554 -36.743615 41.628276 6707.4184 55570027. 0.025303303 0.040126887 -36.791115 41.548295 6708.7408 51174487. 0.039014250 0.040850294 -36.841523 41.471200 6710.0632 51515416. 0.072480250 0.040508864 -36.891932 41.394105