# # 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 = 54.929733 km # Date (UTC) = 2015-11-17T09:28:19.684 # Date (julian) = 2457343.89467227 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6506.7829 5.2613024e+10 0.073723505 0.034328581 113.70199 29.384558 6509.0300 4.9067309e+10 0.084174832 0.035006185 113.75742 29.233398 6511.2771 4.5324382e+10 0.094775286 0.035683790 113.81310 29.082497 6513.5242 4.2258164e+10 0.10581150 0.036361394 113.87357 28.936375 6515.7713 3.9321370e+10 0.11713728 0.037038999 113.93431 28.788630 6518.0184 3.6285900e+10 0.12864286 0.037716603 113.99897 28.618184 6520.2655 3.3096435e+10 0.14025933 0.038394208 114.06025 28.456623 6522.5126 2.9895058e+10 0.15057978 0.039051471 114.11567 28.310501 6524.7597 2.7270136e+10 0.15686163 0.039696830 114.16846 28.171326 6527.0067 2.5312889e+10 0.16201370 0.040721365 114.21697 28.043453 6529.2538 2.3727250e+10 0.16560624 0.042640122 114.26625 27.912958 6531.5009 2.2260797e+10 0.16931454 0.045957784 114.32167 27.761822 6533.7480 2.0722308e+10 0.17185208 0.047837472 114.37709 27.611327 6535.9951 1.9109149e+10 0.17192200 0.047792622 114.43251 27.465206 6538.2422 1.7610512e+10 0.17377828 0.049274620 114.48722 27.319085 6540.4893 1.6222389e+10 0.17403109 0.051085257 114.53760 27.172962 6542.7364 1.4968582e+10 0.17287843 0.051281811 114.58879 27.026840 6544.9835 1.3788015e+10 0.17183541 0.052442163 114.64421 26.880719 6547.2306 1.2666726e+10 0.16970740 0.053375045 114.69964 26.734597 6549.4777 1.1686227e+10 0.16739455 0.054453053 114.75506 26.588475 6551.7248 1.0790175e+10 0.16542424 0.055490150 114.80954 26.442353 6553.9718 1.0004317e+10 0.16289457 0.054846534 114.85992 26.296232 6556.2189 9.2930203e+09 0.16065543 0.053980938 114.91031 26.150110 6558.4660 8.5943327e+09 0.15853337 0.052842193 114.96069 26.003988 6560.7131 7.9695947e+09 0.15577902 0.051631342 115.01219 25.857866 6562.9602 7.3787411e+09 0.15343071 0.049966229 115.06761 25.711744 6565.2073 6.8602464e+09 0.15119321 0.048083004 115.12037 25.569921 6567.4544 6.4599840e+09 0.14918257 0.046232987 115.16446 25.442066 6569.7015 6.1176577e+09 0.14744379 0.044898080 115.20855 25.314212 6571.9486 5.8161823e+09 0.14569190 0.044244201 115.25872 25.168693 6574.1957 5.4954656e+09 0.14319773 0.042761027 115.30911 25.022572 6576.4428 5.1500306e+09 0.14098583 0.040861768 115.35950 24.881400 6578.6899 4.8158932e+09 0.13823164 0.037560260 115.40989 24.740309 6580.9369 4.5020345e+09 0.13562463 0.035654883 115.46028 24.594206 6583.1840 4.2056475e+09 0.13358752 0.034928517 115.51066 24.448085 6585.4311 3.9180645e+09 0.13124079 0.033626098 115.56105 24.301962 6587.6782 3.6594694e+09 0.12909476 0.033308636 115.61126 24.156360 6589.9253 3.4469627e+09 0.12644106 0.031210249 115.65534 24.028507 6592.1724 3.2683478e+09 0.12311861 0.027906073 115.69943 23.900653 6594.4195 3.1118605e+09 0.11975095 0.025942243 115.74831 23.762742 6596.6666 2.9555690e+09 0.11616852 0.025724243 115.79869 23.621659 6598.9137 2.7868559e+09 0.11363757 0.024970945 115.84908 23.476667 6601.1608 2.6364821e+09 0.11337964 0.027121402 115.89947 23.330544 6603.4079 2.4865924e+09 0.11237256 0.026421822 115.94587 23.184423 6605.6550 2.3364114e+09 0.11211650 0.027214494 115.99122 23.038302 6607.9020 2.2092835e+09 0.11035829 0.023925802 116.03555 22.906909 6610.1491 2.1017654e+09 0.10746632 0.024145472 116.07963 22.779055 6612.3962 2.0068296e+09 0.10548516 0.024024707 116.12711 22.644082 6614.6433 1.9158958e+09 0.10449564 0.023497272 116.17750 22.503000 6616.8904 1.8190342e+09 0.10316929 0.023422049 116.22510 22.359129 6619.1375 1.7172595e+09 0.10262289 0.024559091 116.27045 22.213006 6621.3846 1.6202354e+09 0.10185812 0.024961972 116.31866 22.069751 6623.6317 1.5323080e+09 0.10017244 0.024725855 116.36905 21.928668 6625.8788 1.4568887e+09 0.098933877 0.026446246 116.41318 21.795302 6628.1259 1.3975998e+09 0.097031179 0.025754198 116.45287 21.667428 6630.3730 1.3445096e+09 0.095301581 0.025929221 116.49434 21.535385 6632.6200 1.2865095e+09 0.093525802 0.026106694 116.53968 21.394326 6634.8671 1.2305233e+09 0.091841422 0.026390096 116.58502 21.251589 6637.1142 1.1700447e+09 0.090108807 0.026105464 116.63037 21.105468 6639.3613 1.1100034e+09 0.089116246 0.025498929 116.67529 20.967201 6641.6084 1.0590867e+09 0.089280262 0.025150366 116.71938 20.843737 6643.8555 1.0152049e+09 0.087965614 0.025321790 116.76357 20.718487 6646.1026 9.7603272e+08 0.086578118 0.025973256 116.80892 20.572366 6648.3497 9.3495730e+08 0.085323204 0.027198369 116.85427 20.426719 6650.5968 8.8457900e+08 0.084788539 0.026391857 116.89962 20.285636 6652.8439 8.3852509e+08 0.084595948 0.027482705 116.94497 20.144553 6655.0910 7.9915638e+08 0.083566773 0.027647804 116.99031 20.003469 6657.3381 7.6065533e+08 0.081869209 0.029293247 117.03495 19.864038 6659.5851 7.2730846e+08 0.080514951 0.031712536 117.07463 19.736184 6661.8322 7.0020943e+08 0.079117339 0.032958828 117.11431 19.608331 6664.0793 6.7364434e+08 0.077806008 0.031915815 117.15885 19.469144 6666.3264 6.4841585e+08 0.077883148 0.026972203 117.20419 19.328060 6668.5735 6.1744969e+08 0.076916637 0.027978295 117.24954 19.186977 6670.8206 5.8545860e+08 0.076830770 0.026948458 117.29489 19.045895 6673.0677 5.6162184e+08 0.076437577 0.027560466 117.33130 18.920463 6675.3148 5.3989395e+08 0.074600697 0.030401296 117.36656 18.797017 6677.5619 5.2255075e+08 0.072762930 0.031559444 117.40807 18.662652 6679.8090 5.0340557e+08 0.072656925 0.029599272 117.45342 18.521569 6682.0561 4.8181071e+08 0.073388155 0.030467379 117.49877 18.377289 6684.3032 4.5886729e+08 0.073475314 0.032669476 117.54412 18.231168 6686.5502 4.3714998e+08 0.072278060 0.034081227 117.58947 18.088320 6688.7973 4.1636201e+08 0.069298766 0.033969244 117.63482 17.947236 6691.0444 3.9890363e+08 0.068029046 0.032990780 117.67346 17.817885 6693.2915 3.8237568e+08 0.066962292 0.031504078 117.70873 17.694441 6695.5386 3.6954714e+08 0.066331540 0.029760537 117.74800 17.563994 6697.7857 3.5875362e+08 0.065460299 0.030190698 117.79335 17.422911 6700.0328 3.4598265e+08 0.063819190 0.030692046 117.83662 17.281828 6702.2799 3.3293930e+08 0.062331038 0.033100223 117.87693 17.140744 6704.5270 3.1901283e+08 0.062699973 0.036436329 117.91940 16.999662 6706.7741 3.0597323e+08 0.062466411 0.039793618 117.96474 16.858579 6709.0212 2.9056175e+08 0.061878824 0.041119081 118.00786 16.717496 6711.2683 2.7239271e+08 0.060055828 0.040997435 118.04817 16.576412 6713.5153 2.6147287e+08 0.057832816 0.045550527 118.08617 16.443413 6715.7624 2.5514542e+08 0.055821468 0.048158390 118.12144 16.319968 6718.0095 2.5087928e+08 0.053557609 0.049827258 118.15863 16.194127 6720.2566 2.4628249e+08 0.052420461 0.050390032 118.20397 16.058083 6722.5037 2.3320324e+08 0.051952830 0.049982482 118.24828 15.921003 6724.7508 2.1903101e+08 0.048103767 0.043656950 118.28859 15.779920 6726.9979 2.0380641e+08 0.045699703 0.040960367 118.32890 15.638837 6729.2450 1.9416284e+08 0.045116731 0.040882136 118.36921 15.497755 6731.4921 1.8698725e+08 0.043123476 0.042729357 118.41071 15.356672 6733.7392 1.8081051e+08 0.041826458 0.047937490 118.45606 15.215587 6735.9863 1.7548476e+08 0.043200306 0.050340424 118.50014 15.074503 6738.2334 1.6486007e+08 0.044338936 0.058605821 118.54045 14.933421 6740.4804 1.6037765e+08 0.043735640 0.064871123 118.57942 14.798223 6742.7275 1.5488823e+08 0.040561989 0.070383537 118.61469 14.679187 6744.9746 1.5142875e+08 0.036904632 0.078547264 118.64997 14.560095 6747.2217 1.5101203e+08 0.032463090 0.067284831 118.69026 14.419096 6749.4688 1.4299293e+08 0.031545522 0.072149571 118.73057 14.278013 6751.7159 1.3661914e+08 0.028413327 0.074014360 118.77088 14.136930 6753.9630 1.2963318e+08 0.027088678 0.076093723 118.81118 13.995995 6756.2101 1.2334730e+08 0.024852500 0.074707498 118.85149 13.859951 6758.4572 1.2012526e+08 0.025152591 0.074672091 118.89180 13.723681 6760.7043 1.1328060e+08 0.026117812 0.077404285 118.93212 13.582597 6762.9514 1.1089045e+08 0.031797705 0.076516218 118.97243 13.441513 6765.1985 1.0818042e+08 0.034914646 0.079567422 119.01274 13.300430 6767.4455 1.0358121e+08 0.034465172 0.081476869 119.05305 13.159728 6769.6926 1.0011713e+08 0.030295316 0.086134213 119.09335 13.023683 6771.9397 93122842. 0.027090235 0.091584398 119.13366 12.887181 6774.1868 89421995. 0.023893808 0.097034584 119.17397 12.746098 6776.4339 87291967. 0.020683851 0.10248477 119.21375 12.605551 6778.6810 84215957. 0.017545705 0.10793495 119.24902 12.469507 6780.9281 82164373. 0.014380985 0.11338514 119.28490 12.333465 6783.1752 82434908. 0.011051860 0.11883532 119.32520 12.197443 6785.4223 79249255. 0.0079753807 0.12428551 119.36551 12.060730 6787.6694 77579686. 0.0047931205 0.12973569 119.40582 11.919647 6789.9165 76589555. 0.0015472814 0.13518588 119.44715 11.775884 6792.1636 70793605. -0.0010819773 0.14063606 119.49417 11.617161 6794.4106 67045271. -0.0037781847 0.14608625 119.53590 11.466391 6796.6577 60810552. -0.0057306429 0.15153643 119.57117 11.325308 6798.9048 59643131. -0.0082881594 0.15698662 119.60879 11.186574 6801.1519 58918525. -0.010435448 0.16243680 119.64910 11.050530 6803.3990 58253011. -0.011496317 0.16788699 119.68941 10.914485 6805.6461 58449659. -0.010304528 0.17333718 119.72972 10.778440 6807.8932 50880064. 0.027045271 0.17878736 119.76753 10.642396 6810.1403 49298952. -0.0097947148 0.18423755 119.80280 10.506351 6812.3874 45928375. -0.087565824 0.18968773 119.84409 10.355677