# # 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 = 59.391086 km # Date (UTC) = 2015-01-31T10:39:25.736 # Date (julian) = 2457053.94404788 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.4820 9.0539318e+10 0.030795255 0.030619286 88.462778 54.502672 6496.7605 8.0490887e+10 0.037900367 0.031306337 88.682538 54.271882 6499.0389 7.2924626e+10 0.044886691 0.031993388 88.868534 54.071581 6501.3173 6.6533665e+10 0.051939330 0.032680439 89.100627 53.821631 6503.5957 5.9972194e+10 0.059132871 0.033367490 89.325241 53.571326 6505.8741 5.3939472e+10 0.066630373 0.034054541 89.520409 53.358788 6508.1526 4.8657279e+10 0.074620663 0.034741592 89.716582 53.140653 6510.4310 4.4298246e+10 0.083345404 0.035428643 89.922609 52.902276 6512.7094 4.0484036e+10 0.092930945 0.036115694 90.101433 52.701990 6514.9878 3.7104884e+10 0.10346408 0.036802745 90.274250 52.501707 6517.2662 3.3933847e+10 0.11492119 0.037489796 90.460927 52.279307 6519.5447 3.0687623e+10 0.12715730 0.038176847 90.655546 52.045195 6521.8231 2.7727830e+10 0.14032110 0.038863898 90.827216 51.844912 6524.1015 2.5208502e+10 0.14847220 0.039463014 90.992269 51.644627 6526.3799 2.2952189e+10 0.15592141 0.040066373 91.173745 51.417961 6528.6583 2.0781180e+10 0.16306666 0.041964733 91.357263 51.185189 6530.9367 1.8754244e+10 0.16887915 0.045140119 91.521702 50.977829 6533.2152 1.7113105e+10 0.17491206 0.047611024 91.679069 50.777546 6535.4936 1.5765868e+10 0.17699583 0.048010184 91.832029 50.577291 6537.7720 1.4594275e+10 0.17803913 0.049049188 91.983747 50.375511 6540.0504 1.3534072e+10 0.17763107 0.050877920 92.141113 50.168076 6542.3288 1.2476649e+10 0.17464203 0.051127082 92.292639 49.966478 6544.6073 1.1487384e+10 0.17253719 0.052136963 92.442836 49.766213 6546.8857 1.0525523e+10 0.17047251 0.053193291 92.592869 49.565834 6549.1641 9.6724601e+09 0.16818142 0.054133501 92.735932 49.358397 6551.4425 8.9379441e+09 0.16664997 0.055391078 92.878992 49.155410 6553.7209 8.2764134e+09 0.16470879 0.054972667 93.022051 48.953524 6555.9993 7.6772035e+09 0.16245274 0.054013676 93.165114 48.746087 6558.2778 7.1219891e+09 0.16067357 0.053002616 93.308144 48.544599 6560.5562 6.5997160e+09 0.15806453 0.051772840 93.448124 48.344344 6562.8346 6.1184627e+09 0.15564324 0.050085751 93.584245 48.143850 6565.1130 5.6795359e+09 0.15340245 0.048190063 93.727303 47.936411 6567.3914 5.2727157e+09 0.15136996 0.046286218 93.865824 47.733523 6569.6699 4.8860326e+09 0.14970257 0.044896022 94.000038 47.531609 6571.9483 4.5435757e+09 0.14807602 0.044244283 94.128792 47.324172 6574.2267 4.2612238e+09 0.14551539 0.042746126 94.244594 47.150596 6576.5051 4.0283638e+09 0.14295967 0.040790001 94.360286 46.977310 6578.7835 3.8293273e+09 0.13961833 0.037412331 94.489040 46.769875 6581.0619 3.6110284e+09 0.13653970 0.035577851 94.617771 46.567907 6583.3404 3.4137469e+09 0.13379294 0.034849389 94.738752 46.377561 6585.6188 3.2544258e+09 0.13065661 0.033476069 94.846043 46.204706 6587.8972 3.1114693e+09 0.12824392 0.033357155 94.963118 46.013101 6590.1756 2.9576998e+09 0.12578019 0.030735386 95.084713 45.810788 6592.4540 2.7957083e+09 0.12347584 0.027632516 95.206283 45.603403 6594.7325 2.6596749e+09 0.12131016 0.025770439 95.309896 45.431937 6597.0109 2.5544890e+09 0.11875799 0.025719295 95.415471 45.256547 6599.2893 2.4536106e+09 0.11718060 0.024947130 95.537071 45.049109 6601.5677 2.3361173e+09 0.11719854 0.027313050 95.658675 44.847477 6603.8461 2.2222221e+09 0.11591365 0.026162366 95.769432 44.658534 6606.1245 2.1143191e+09 0.11559764 0.027280152 95.864799 44.485676 6608.4030 2.0193154e+09 0.11306250 0.023721717 95.979445 44.292676 6610.6814 1.9297018e+09 0.10990967 0.024654028 96.092176 44.101678 6612.9598 1.8449117e+09 0.10850024 0.023603623 96.187547 43.928820 6615.2382 1.7566212e+09 0.10714618 0.023258861 96.295502 43.737870 6617.5166 1.6737424e+09 0.10593489 0.023610540 96.403395 43.544765 6619.7951 1.5931146e+09 0.10517715 0.024717749 96.492805 43.371907 6622.0735 1.5192839e+09 0.10379477 0.024738435 96.596822 43.178884 6624.3519 1.4463804e+09 0.10180909 0.025050678 96.706601 42.979013 6626.6303 1.3714731e+09 0.099982932 0.025787823 96.796006 42.812118 6628.9087 1.3103936e+09 0.098328114 0.026072050 96.885413 42.642194 6631.1872 1.2613064e+09 0.096175763 0.025949777 96.974823 42.469337 6633.4656 1.2193553e+09 0.094240453 0.026233537 97.079083 42.273709 6635.7440 1.1733737e+09 0.092244941 0.026511360 97.178640 42.085296 6638.0224 1.1254397e+09 0.090916112 0.025670666 97.268031 41.912473 6640.3008 1.0713047e+09 0.090948675 0.025233846 97.370928 41.718938 6642.5792 1.0184189e+09 0.091113559 0.025175400 97.469729 41.528424 6644.8577 9.7194028e+08 0.090381280 0.025436301 97.553177 41.355566 6647.1361 9.3782309e+08 0.089314404 0.026509427 97.636624 41.186754 6649.4145 9.0577980e+08 0.088356403 0.027062321 97.720171 41.019690 6651.6929 8.6778296e+08 0.088062862 0.027015187 97.827388 40.812388 6653.9713 8.2555766e+08 0.087573729 0.028021591 97.920297 40.629410 6656.2498 7.8625048e+08 0.085866721 0.028242626 98.003728 40.462548 6658.5282 7.5610266e+08 0.084322961 0.030997804 98.081661 40.290142 6660.8066 7.2907963e+08 0.082852304 0.032359150 98.160621 40.118757 6663.0850 7.0425457e+08 0.081529367 0.032459654 98.244069 39.951860 6665.3634 6.7581447e+08 0.080955386 0.027951641 98.337023 39.765951 6667.6418 6.4655079e+08 0.080346550 0.027339219 98.433282 39.570368 6669.9203 6.1323601e+08 0.079663324 0.027410526 98.510772 39.397513 6672.1987 5.8550862e+08 0.079350426 0.026994760 98.588252 39.227615 6674.4771 5.6439066e+08 0.078093307 0.029357258 98.665723 39.060751 6676.7555 5.4708114e+08 0.075558544 0.032200652 98.743206 38.889000 6679.0339 5.3085701e+08 0.074558242 0.030239726 98.822832 38.712359 6681.3124 5.0811728e+08 0.075508701 0.029896994 98.915824 38.512074 6683.5908 4.8529849e+08 0.075769438 0.032054369 98.997342 38.332085 6685.8692 4.6288723e+08 0.075155322 0.033622920 99.074828 38.159599 6688.1476 4.4251534e+08 0.072518718 0.033819264 99.152314 37.992703 6690.4260 4.2691134e+08 0.070650304 0.033067040 99.229796 37.825819 6692.7044 4.1371269e+08 0.069695106 0.031947295 99.307271 37.658957 6694.9829 4.0115165e+08 0.069068787 0.029883486 99.390651 37.463424 6697.2613 3.8650668e+08 0.068466928 0.030124331 99.472070 37.268498 6699.5397 3.6867050e+08 0.067034008 0.031092440 99.543598 37.101603 6701.8181 3.5070866e+08 0.065209754 0.032609864 99.618885 36.934706 6704.0965 3.3681694e+08 0.065401304 0.036224960 99.696371 36.767808 6706.3750 3.2424567e+08 0.065215621 0.039098992 99.768178 36.595232 6708.6534 3.1557841e+08 0.064514868 0.040755084 99.839703 36.424027 6710.9318 3.0458664e+08 0.062659725 0.040678882 99.911218 36.257161 6713.2102 2.8964093e+08 0.060353355 0.044446925 99.991288 36.070329 6715.4886 2.7619072e+08 0.058105595 0.047878348 100.07308 35.875517 6717.7671 2.5814893e+08 0.055748659 0.049826823 100.13864 35.702660 6720.0455 2.4689977e+08 0.054169531 0.050414498 100.20732 35.532913 6722.3239 2.3723493e+08 0.053657259 0.050204794 100.27885 35.366018 6724.6023 2.3391752e+08 0.049803554 0.044897015 100.34535 35.199123 6726.8807 2.3496763e+08 0.046733645 0.040959311 100.41190 35.032227 6729.1591 2.2949543e+08 0.045847212 0.040939354 100.48343 34.865329 6731.4376 2.2365699e+08 0.043488108 0.042620854 100.55203 34.695536 6733.7160 2.1736241e+08 0.041787897 0.047811573 100.61759 34.522714 6735.9944 2.0782871e+08 0.042720629 0.050349060 100.69379 34.327627 6738.2728 1.9899293e+08 0.043430061 0.058823074 100.76706 34.141122 6740.5512 1.8681332e+08 0.042221521 0.064992053 100.83262 33.974226 6742.8297 1.7818453e+08 0.038371915 0.070632359 100.89819 33.807331 6745.1081 1.7533466e+08 0.034434309 0.078612319 100.96376 33.640435 6747.3865 1.7080918e+08 0.029491978 0.067228107 101.02932 33.473538 6749.6649 1.6208068e+08 0.027275892 0.072095880 101.09489 33.304391 6751.9433 1.5626780e+08 0.023314769 0.074110515 101.16044 33.131571 6754.2217 1.5262387e+08 0.021546418 0.075856876 101.23520 32.939481 6756.5002 1.4856208e+08 0.018351319 0.075453905 101.30810 32.749332 6758.7786 1.4547592e+08 0.018274852 0.075351738 101.36770 32.582435 6761.0570 1.3747704e+08 0.018140825 0.077972934 101.43104 32.415539 6763.3354 1.3321319e+08 0.023083951 0.077459291 101.49660 32.248644 6765.6138 1.3188168e+08 0.025111776 0.079643251 101.55652 32.081746 6767.8923 1.2881702e+08 0.022469680 0.080976670 101.62128 31.905830 6770.1707 1.2308733e+08 0.017074806 0.087293661 101.69994 31.705595 6772.4491 1.1774829e+08 0.012433312 0.092819828 101.76198 31.534437 6774.7275 1.1055693e+08 0.0075732650 0.098345994 101.82159 31.367541 6777.0059 1.0654738e+08 0.0030578701 0.10387216 101.88120 31.200646 6779.2843 1.0681326e+08 -0.00090309361 0.10939833 101.94081 31.033749 6781.5628 1.0581768e+08 -0.0049931146 0.11492449 102.00041 30.866851 6783.8412 1.0241046e+08 -0.0093768814 0.12045066 102.07001 30.671978 6786.1196 98509172. -0.013843868 0.12597683 102.13627 30.486438 6788.3980 90353653. -0.019029304 0.13150299 102.19588 30.319542 6790.6764 85992041. -0.023692707 0.13702916 102.25548 30.152646 6792.9549 81306820. -0.028508713 0.14255532 102.31509 29.985749 6795.2333 77300092. -0.033323749 0.14808149 102.37470 29.818853 6797.5117 74543725. -0.038002229 0.15360766 102.43625 29.638345 6799.7901 72136023. -0.042779055 0.15913382 102.50058 29.438391 6802.0685 68784332. -0.048083083 0.16465999 102.56018 29.271489 6804.3470 63102155. -0.054644711 0.17018616 102.61978 29.104603 6806.6254 58642285. -0.061617425 0.17571232 102.67938 28.937738 6808.9038 55418539. -0.069148243 0.18123849 102.74210 28.749019 6811.1822 56604649. -0.075630039 0.18676466 102.80373 28.558808 6813.4606 56374118. -0.084918283 0.19229082 102.85737 28.397872 6815.7390 52129655. -0.10361348 0.19781699 102.92136 28.214182 6818.0175 48613818. -0.17547535 0.20334315 102.98967 28.019923 6820.2959 47243643. -0.13186501 0.20886932 103.04330 27.853061 6824.8527 48531281. -0.013952029 0.21992165 103.15059 27.519285