# # 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 = 53.404589 km # Date (UTC) = 2013-01-19T09:07:54.564 # Date (julian) = 2456311.88049264 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6491.1234 8.0432108e+10 0.025473816 0.029606494 -15.781886 52.942535 6493.4357 7.4212156e+10 0.032325640 0.030303773 -15.927065 52.807727 6495.7481 6.8349050e+10 0.038845602 0.031001052 -16.084288 52.661734 6498.0604 6.3490692e+10 0.045016402 0.031698331 -16.253669 52.504450 6500.3727 5.8856891e+10 0.050993402 0.032395611 -16.398232 52.366148 6502.6851 5.4421126e+10 0.056942755 0.033092890 -16.538225 52.231339 6504.9974 5.0859692e+10 0.063249921 0.033790169 -16.678220 52.096528 6507.3098 4.7138457e+10 0.070029389 0.034487448 -16.818215 51.961717 6509.6221 4.3305247e+10 0.077482059 0.035184727 -16.975277 51.804723 6511.9344 3.9544729e+10 0.085795994 0.035882006 -17.125050 51.654951 6514.2468 3.6104587e+10 0.095264728 0.036579285 -17.259859 51.520140 6516.5591 3.3025840e+10 0.10612312 0.037276565 -17.403770 51.376230 6518.8714 3.0139991e+10 0.11834590 0.037973844 -17.561021 51.218979 6521.1838 2.7385075e+10 0.13194911 0.038671123 -17.701393 51.078606 6523.4961 2.4948425e+10 0.14273675 0.039302075 -17.836203 50.943796 6525.8085 2.2949665e+10 0.15169293 0.039689947 -17.966743 50.804718 6528.1208 2.1190938e+10 0.16157497 0.041538310 -18.096368 50.664725 6530.4331 1.9645549e+10 0.16999444 0.044435073 -18.225992 50.529369 6532.7455 1.8126964e+10 0.17656333 0.047306953 -18.355617 50.394559 6535.0578 1.6586251e+10 0.17946333 0.048199220 -18.500274 50.238037 6537.3701 1.5081467e+10 0.17938703 0.048859732 -18.638963 50.086169 6539.6825 1.3728135e+10 0.17835170 0.050469753 -18.763402 49.946173 6541.9948 1.2665307e+10 0.17584609 0.051003919 -18.887842 49.808172 6544.3072 1.1781385e+10 0.17354593 0.051893517 -19.012281 49.673361 6546.6195 1.0950885e+10 0.17153345 0.052974268 -19.134357 49.538551 6548.9318 1.0177741e+10 0.16937307 0.053945922 -19.253611 49.403743 6551.2442 9.4860550e+09 0.16775500 0.055321457 -19.375599 49.266200 6553.5565 8.8699528e+09 0.16597092 0.055055320 -19.500039 49.126205 6555.8688 8.3394136e+09 0.16358113 0.054123331 -19.618272 48.989314 6558.1812 7.8453478e+09 0.16149281 0.053084919 -19.732342 48.854506 6560.4935 7.3141574e+09 0.15860889 0.051829342 -19.863202 48.700590 6562.8059 6.7794921e+09 0.15581782 0.050113106 -20.001915 48.537738 6565.1182 6.2764916e+09 0.15322472 0.048184192 -20.115985 48.402927 6567.4305 5.8552859e+09 0.15073061 0.046253167 -20.230054 48.268116 6569.7429 5.5150081e+09 0.14841967 0.044900773 -20.344124 48.133307 6572.0552 5.2080423e+09 0.14592232 0.044198544 -20.458194 47.997672 6574.3675 4.9173787e+09 0.14257194 0.042678478 -20.572264 47.857677 6576.6799 4.6481725e+09 0.13916870 0.040588843 -20.686333 47.718879 6578.9922 4.3942482e+09 0.13489419 0.037082796 -20.800402 47.584070 6581.3045 4.1454978e+09 0.13104857 0.035504387 -20.912905 47.447694 6583.6169 3.9119044e+09 0.12744804 0.034709426 -21.021790 47.307700 6585.9292 3.6930965e+09 0.12405255 0.033227880 -21.130675 47.167705 6588.2416 3.4838014e+09 0.12182469 0.033299261 -21.239559 47.027710 6590.5539 3.2865402e+09 0.11929386 0.030031731 -21.346137 46.890021 6592.8662 3.0936628e+09 0.11699986 0.027232148 -21.449837 46.755211 6595.1786 2.9130865e+09 0.11446397 0.025642090 -21.556213 46.617724 6597.4909 2.7481280e+09 0.11193974 0.025567815 -21.665097 46.477729 6599.8032 2.5968964e+09 0.11074284 0.024978041 -21.770935 46.340782 6602.1156 2.4549616e+09 0.11014868 0.027417999 -21.874636 46.205973 6604.4279 2.3166769e+09 0.10872673 0.026325362 -21.978336 46.067747 6606.7403 2.1820400e+09 0.10776341 0.026173744 -22.082036 45.927752 6609.0526 2.0514234e+09 0.10452232 0.023721555 -22.185735 45.791545 6611.3649 1.9360101e+09 0.10145066 0.024725737 -22.289434 45.656736 6613.6773 1.8266182e+09 0.10017063 0.023822082 -22.388977 45.517770 6615.9896 1.7303817e+09 0.098246931 0.023281979 -22.487492 45.377775 6618.3019 1.6417683e+09 0.097254600 0.023998799 -22.586007 45.237780 6620.6143 1.5551954e+09 0.096080431 0.024965149 -22.684522 45.097786 6622.9266 1.4775345e+09 0.094174557 0.024511358 -22.783036 44.962688 6625.2390 1.3984610e+09 0.092244856 0.025682750 -22.881550 44.827797 6627.5513 1.3227481e+09 0.089811709 0.025529766 -22.980065 44.687803 6629.8636 1.2531258e+09 0.088052963 0.025952958 -23.078579 44.548262 6632.1760 1.1879589e+09 0.085700749 0.026053445 -23.177077 44.413474 6634.4883 1.1270677e+09 0.083726207 0.026362462 -23.274757 44.277864 6636.8006 1.0675619e+09 0.081929536 0.026238831 -23.368087 44.137869 6639.1130 1.0089373e+09 0.080913633 0.025587694 -23.461417 43.999064 6641.4253 9.5409419e+08 0.081803965 0.025149745 -23.554747 43.864255 6643.7377 9.0291808e+08 0.081291507 0.025303995 -23.644571 43.733145 6646.0500 8.6195757e+08 0.080452091 0.025946023 -23.726244 43.610634 6648.3623 8.2641039e+08 0.079530136 0.027206827 -23.809047 43.486428 6650.6747 7.9313748e+08 0.079034579 0.026409687 -23.902377 43.346433 6652.9870 7.5870017e+08 0.078770105 0.027522085 -23.994834 43.207312 6655.2993 7.1837613e+08 0.077513448 0.027733903 -24.082979 43.072503 6657.6117 6.8110200e+08 0.075852821 0.029610635 -24.172362 42.936457 6659.9240 6.4719079e+08 0.074487349 0.031641848 -24.265676 42.796487 6662.2363 6.1642797e+08 0.073030652 0.032911665 -24.357384 42.658119 6664.5487 5.8407486e+08 0.072098154 0.030198466 -24.445529 42.523307 6666.8610 5.5387058e+08 0.071957611 0.027076376 -24.533674 42.386516 6669.1734 5.2642136e+08 0.070812357 0.028177649 -24.621819 42.246521 6671.4857 4.9843248e+08 0.070918269 0.026872270 -24.709964 42.106527 6673.7980 4.7639933e+08 0.070210354 0.028652738 -24.798108 41.966535 6676.1104 4.5293765e+08 0.067888466 0.031784859 -24.883532 41.829261 6678.4227 4.3172922e+08 0.066861095 0.030653887 -24.966492 41.694451 6680.7350 4.0957923e+08 0.067521979 0.029600144 -25.052542 41.556550 6683.0474 3.8746410e+08 0.068206852 0.031258023 -25.140687 41.416556 6685.3597 3.7126193e+08 0.067879919 0.033084792 -25.225371 41.280022 6687.6721 3.5513896e+08 0.065766438 0.033968087 -25.308331 41.145212 6689.9844 3.4058456e+08 0.063734207 0.033129910 -25.391291 41.006572 6692.2967 3.2529347e+08 0.062910952 0.032420751 -25.474250 40.866577 6694.6091 3.0895665e+08 0.062454550 0.030407383 -25.557210 40.726583 6696.9214 2.9291277e+08 0.062329060 0.030058611 -25.640169 40.586588 6699.2337 2.8094453e+08 0.061202335 0.031374753 -25.723129 40.451165 6701.5461 2.6874554e+08 0.059589497 0.032210703 -25.806089 40.316357 6703.8584 2.5770148e+08 0.059905048 0.035823271 -25.884107 40.176606 6706.1708 2.4385806e+08 0.060157705 0.038743591 -25.962007 40.036737 6708.4831 2.2642851e+08 0.059997295 0.040569649 -26.044969 39.901926 6710.7954 2.1717686e+08 0.058581814 0.040652190 -26.127434 39.766619 6713.1078 2.0777273e+08 0.056633412 0.044076395 -26.205208 39.626624 6715.4201 2.0127879e+08 0.054682211 0.047808259 -26.282983 39.487495 6717.7324 1.9050368e+08 0.052701051 0.049828964 -26.360757 39.352687 6720.0448 1.7881304e+08 0.051606299 0.050414578 -26.438532 39.216643 6722.3571 1.7187885e+08 0.051545135 0.050163716 -26.516306 39.076648 6724.6695 1.6473110e+08 0.048059803 0.044336299 -26.594081 38.938259 6726.9818 1.6179281e+08 0.045590578 0.040960222 -26.671855 38.803451 6729.2941 1.5626815e+08 0.045154111 0.040849384 -26.749630 38.666666 6731.6065 1.4873247e+08 0.043328239 0.042957001 -26.827406 38.526672 6733.9188 1.4174676e+08 0.042173255 0.048912750 -26.902835 38.389022 6736.2311 1.3462437e+08 0.043978885 0.051228840 -26.975425 38.254210 6738.5435 1.2775969e+08 0.045156658 0.060313176 -27.048015 38.116684 6740.8558 1.2600873e+08 0.044268645 0.065512372 -27.120604 37.976690 6743.1682 1.2150505e+08 0.040474830 0.072181777 -27.196279 37.839781 6745.4805 1.1678951e+08 0.037662323 0.078768879 -27.274053 37.704972 6747.7928 1.1306285e+08 0.033405886 0.067088222 -27.348373 37.566708 6750.1052 1.0696051e+08 0.030809225 0.072183700 -27.420964 37.426713 6752.4175 1.0418908e+08 0.027987333 0.073651352 -27.493553 37.290545 6754.7298 1.0004062e+08 0.026378923 0.075039803 -27.566143 37.155736 6757.0422 95342096. 0.023467837 0.076612072 -27.638732 37.020925 6759.3545 92101960. 0.024468255 0.075905504 -27.711322 36.886114 6761.6668 89153898. 0.026937311 0.078023319 -27.789240 36.726191 6763.9792 86916886. 0.030882966 0.079419892 -27.866506 36.569345 6766.2915 83881129. 0.032192943 0.080373175 -27.939095 36.434537 6768.6039 78744819. 0.027906080 0.083028852 -28.010136 36.298179 6770.9162 77911803. 0.023316480 0.089101879 -28.077541 36.158184 6773.2285 75935100. 0.018977280 0.094710313 -28.146865 36.020109 6775.5409 72193043. 0.014567673 0.10031875 -28.219454 35.885301 6777.8532 71924737. 0.010285758 0.10592718 -28.289755 35.750491 6780.1655 67679335. 0.0058092049 0.11153562 -28.357159 35.615681 6782.4779 65113127. 0.0013878299 0.11714405 -28.430318 35.466261 6784.7902 62579265. -0.0030664700 0.12275248 -28.508945 35.302960 6787.1026 59072352. -0.0076535626 0.12836092 -28.577927 35.164146 6789.4149 60318821. -0.011869280 0.13396935 -28.645331 35.029337 6791.7272 59718820. -0.016292258 0.13957779 -28.712736 34.894527 6794.0396 58188506. -0.020917541 0.14518622 -28.780142 34.759702 6796.3519 52932467. -0.026281840 0.15079466 -28.847546 34.619713 6798.6642 51042077. -0.031706499 0.15640309 -28.915331 34.478450 6800.9766 51291134. -0.037578435 0.16201152 -28.987924 34.321167 6803.2889 50405312. -0.046023354 0.16761996 -29.058335 34.173331 6805.6013 50543999. -0.075487408 0.17322839 -29.125740 34.038521 6807.9136 47120574. -0.058866478 0.17883683 -29.190595 33.901162 6810.2259 44594423. -0.011884789 0.18444526 -29.252815 33.761167