# # 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 = 40.267646 km # Date (UTC) = 2015-12-03T08:29:37.122 # Date (julian) = 2457359.85390188 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6498.8335 8.4097531e+10 0.042165504 0.031931463 -4.0356363 55.701187 6500.9499 7.6173685e+10 0.049335085 0.032569644 -4.1611411 55.616287 6503.0662 6.8671809e+10 0.056639146 0.033207826 -4.2866347 55.531394 6505.1826 6.2498562e+10 0.064272954 0.033846008 -4.4121231 55.446505 6507.2990 5.6922644e+10 0.072285731 0.034484189 -4.5376164 55.361612 6509.4153 5.2005748e+10 0.080790145 0.035122371 -4.6744161 55.266317 6511.5317 4.7318294e+10 0.089751982 0.035760552 -4.8114402 55.170815 6513.6480 4.2836422e+10 0.099171516 0.036398734 -4.9397451 55.081391 6515.7644 3.9333465e+10 0.10941320 0.037036915 -5.0615426 54.996502 6517.8807 3.6310054e+10 0.12040062 0.037675097 -5.1833402 54.911613 6519.9971 3.3584356e+10 0.13207261 0.038313279 -5.3146974 54.817562 6522.1134 3.0875138e+10 0.14395460 0.038946958 -5.4475693 54.722058 6524.2298 2.8212050e+10 0.15067085 0.039508598 -5.5737319 54.631378 6526.3462 2.6017701e+10 0.15681401 0.040030993 -5.6918540 54.546478 6528.4625 2.4081238e+10 0.16313105 0.041809396 -5.8099762 54.461578 6530.5789 2.2175521e+10 0.16841724 0.044639104 -5.9390993 54.365675 6532.6952 2.0211083e+10 0.17329523 0.047264980 -6.0719715 54.266022 6534.8116 1.8276850e+10 0.17593132 0.048171588 -6.1986146 54.171351 6536.9279 1.6648736e+10 0.17675658 0.048620751 -6.3130302 54.086462 6539.0443 1.5347722e+10 0.17630859 0.049697245 -6.4274457 54.001574 6541.1607 1.4258832e+10 0.17496064 0.051274431 -6.5418616 53.916685 6543.2770 1.3313272e+10 0.17299053 0.051454595 -6.6562776 53.831796 6545.3934 1.2409324e+10 0.17111286 0.052459091 -6.7706937 53.746907 6547.5097 1.1518516e+10 0.16937621 0.053481201 -6.8944353 53.648453 6549.6261 1.0571578e+10 0.16763566 0.054604300 -7.0190025 53.548798 6551.7424 9.6844358e+09 0.16603391 0.055496356 -7.1365133 53.456673 6553.8588 8.9135574e+09 0.16390060 0.054903366 -7.2472532 53.371773 6555.9751 8.2614611e+09 0.16175701 0.054034012 -7.3579930 53.286873 6558.0915 7.6876996e+09 0.16004725 0.053161336 -7.4764854 53.190150 6560.2079 7.0906994e+09 0.15766512 0.052086901 -7.5969006 53.090495 6562.3242 6.5283444e+09 0.15502342 0.050571405 -7.7120579 52.996643 6564.4406 6.0432629e+09 0.15224810 0.048571932 -7.8190921 52.911754 6566.5569 5.6359095e+09 0.14986989 0.046867835 -7.9261263 52.826865 6568.6733 5.2661648e+09 0.14763730 0.045152758 -8.0423066 52.731884 6570.7896 4.9044849e+09 0.14569476 0.044590415 -8.1627218 52.632231 6572.9060 4.5477633e+09 0.14350061 0.043711318 -8.2784390 52.536641 6575.0223 4.2186237e+09 0.14086483 0.042352286 -8.3817822 52.451752 6577.1387 3.9518781e+09 0.13759538 0.040002503 -8.4851255 52.366863 6579.2551 3.7180148e+09 0.13377147 0.036930280 -8.5884688 52.279885 6581.3714 3.5370069e+09 0.13012273 0.035484139 -8.6918122 52.191305 6583.4878 3.3738885e+09 0.12682462 0.034774778 -8.7951555 52.102724 6585.6041 3.1982372e+09 0.12386435 0.033487787 -8.9060213 52.004648 6587.7205 3.0093425e+09 0.12182870 0.033318001 -9.0181489 51.904978 6589.8368 2.8141308e+09 0.11986837 0.031385763 -9.1246828 51.811935 6591.9532 2.6334579e+09 0.11749654 0.028126339 -9.2243352 51.727047 6594.0696 2.4682570e+09 0.11519619 0.026134343 -9.3239877 51.642158 6596.1859 2.3168819e+09 0.11253363 0.025726429 -9.4328464 51.546359 6598.3023 2.1565127e+09 0.11078499 0.025262854 -9.5449572 51.446705 6600.4186 2.0116524e+09 0.11030182 0.025850481 -9.6529488 51.350713 6602.5350 1.8921141e+09 0.10942883 0.027060106 -9.7526013 51.262133 6604.6513 1.7876119e+09 0.10816915 0.026458016 -9.8522537 51.173552 6606.7677 1.6921867e+09 0.10697445 0.026124451 -9.9570660 51.078093 6608.8840 1.5900026e+09 0.10387009 0.023708997 -10.065024 50.978440 6611.0004 1.4830473e+09 0.10076125 0.024958200 -10.170432 50.881927 6613.1168 1.3909607e+09 0.099539281 0.023616429 -10.266406 50.797025 6615.2331 1.3117115e+09 0.097907554 0.023258704 -10.362380 50.712124 6617.3495 1.2340759e+09 0.096398563 0.023555115 -10.462300 50.619790 6619.4658 1.1602646e+09 0.095351306 0.024638310 -10.566107 50.520137 6621.5822 1.0871024e+09 0.093983835 0.024896480 -10.668811 50.421541 6623.6985 1.0230010e+09 0.091800883 0.024750623 -10.761082 50.332961 6625.8149 9.7328133e+08 0.090099227 0.026370017 -10.853353 50.244380 6627.9312 9.2382498e+08 0.087798193 0.025676538 -10.950077 50.151525 6630.0476 8.7280442e+08 0.086016523 0.025928419 -11.053884 50.051872 6632.1640 8.1893566e+08 0.084096009 0.026052006 -11.157690 49.952218 6634.2803 7.7389912e+08 0.082656610 0.026347290 -11.246608 49.863392 6636.3967 7.2981298e+08 0.081437471 0.026395708 -11.335188 49.774811 6638.5130 6.9373384e+08 0.080640844 0.025649291 -11.427854 49.683260 6640.6294 6.5785248e+08 0.081163368 0.025193646 -11.531660 49.583606 6642.7457 6.1862168e+08 0.081162059 0.025182214 -11.635467 49.483952 6644.8621 5.8667436e+08 0.080349664 0.025436780 -11.726189 49.393812 6646.9785 5.6105447e+08 0.079262953 0.026426627 -11.814781 49.305219 6649.0948 5.4003401e+08 0.078113347 0.027502996 -11.904416 49.214958 6651.2112 5.1827276e+08 0.077784806 0.026645994 -11.999917 49.115305 6653.3275 4.8816525e+08 0.077426027 0.027692883 -12.095419 49.015651 6655.4439 4.5187776e+08 0.076150143 0.027793628 -12.185780 48.924221 6657.5602 4.2976650e+08 0.074501509 0.029550966 -12.274360 48.835641 6659.6766 4.1069190e+08 0.073031809 0.031693461 -12.363169 48.746693 6661.7929 3.9361471e+08 0.071543831 0.032938815 -12.458672 48.647037 6663.9093 3.7550900e+08 0.070132572 0.032231223 -12.554174 48.547382 6666.0257 3.5398209e+08 0.070153986 0.026913595 -12.640738 48.454648 6668.1420 3.3939496e+08 0.069255965 0.027596448 -12.721937 48.366069 6670.2584 3.2391820e+08 0.068665289 0.027208933 -12.803135 48.277490 6672.3747 3.0822168e+08 0.068227862 0.027096798 -12.897440 48.178758 6674.4911 2.9432597e+08 0.066944478 0.029369052 -12.992956 48.079089 6676.6074 2.8060373e+08 0.064560764 0.032105215 -13.086357 47.979428 6678.7238 2.6549895e+08 0.063672608 0.030452509 -13.177707 47.879775 6680.8402 2.5266904e+08 0.064457977 0.029622840 -13.268050 47.780853 6682.9565 2.3749145e+08 0.065114684 0.031155351 -13.349248 47.688583 6685.0729 2.2609103e+08 0.064953546 0.032781800 -13.430446 47.596312 6687.1892 2.1718070e+08 0.063152875 0.034237370 -13.515600 47.501164 6689.3056 2.0465327e+08 0.060549767 0.033740957 -13.606950 47.401508 6691.4219 1.9430489e+08 0.059542461 0.032901715 -13.698299 47.301853 6693.5383 1.8087145e+08 0.058526388 0.031419423 -13.785575 47.202200 6695.6546 1.7134824e+08 0.058060986 0.029739223 -13.872772 47.102547 6697.7710 1.5991054e+08 0.057153391 0.030188837 -13.959969 47.002893 6699.8874 1.4611218e+08 0.055396716 0.030771656 -14.047166 46.903238 6702.0037 1.3416731e+08 0.053378328 0.032879694 -14.132767 46.805408 6704.1201 1.2623610e+08 0.053463817 0.036236513 -14.210275 46.716829 6706.2364 1.2202401e+08 0.053202558 0.038857883 -14.287782 46.628250 6708.3528 1.1876683e+08 0.052619191 0.040427744 -14.369708 46.534621 6710.4691 1.1190288e+08 0.050974137 0.040588323 -14.456918 46.434951 6712.5855 1.0546998e+08 0.048683129 0.042917023 -14.544128 46.335282 6714.7018 99039268. 0.046411678 0.047356173 -14.631326 46.235627 6716.8182 91521924. 0.044137656 0.049606501 -14.718523 46.135973 6718.9346 86914139. 0.041627506 0.051267922 -14.803067 46.033665 6721.0509 81136393. 0.041774686 0.050319240 -14.886112 45.929859 6723.1673 75596178. 0.040386556 0.049462235 -14.969156 45.827011 6725.2836 69717257. 0.035953515 0.041398850 -15.052201 45.727358 6727.4000 64389698. 0.034406906 0.040427491 -15.135246 45.627705 6729.5163 63664663. 0.033995705 0.040701273 -15.218291 45.528050 6731.6327 60613722. 0.032312033 0.043009210 -15.301337 45.428396 6733.7491 53423675. 0.030580108 0.047991139 -15.382663 45.328741 6735.8654 50338966. 0.031750337 0.050212129 -15.461556 45.229088 6737.9818 46911869. 0.032599867 0.057263005 -15.540472 45.129434 6740.0981 49082143. 0.032834408 0.064217986 -15.623517 45.029780 6742.2145 53244505. 0.030938610 0.069133367 -15.706562 44.930125 6744.3308 52023621. 0.025672217 0.078049304 -15.787127 44.827990 6746.4472 51472099. 0.021430553 0.073788192 -15.866020 44.724184 6748.5635 48267508. 0.015339358 0.069981736 -15.944915 44.621160 6750.6799 45783122. 0.0039392354 0.073165092 -16.023820 44.521492 6752.7963 48423305. -0.041171763 0.073213057 -16.102724 44.421824 6754.9126 51837686. -0.0028035349 0.074745872 -16.181619 44.322167 6757.0290 50343527. 0.066158698 0.076652138 -16.260511 44.222512