# # 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 = 56.624555 km # Date (UTC) = 2013-12-25T10:52:27.923 # Date (julian) = 2456651.95310096 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6506.0725 5.2306863e+10 0.071688410 0.034114349 92.253527 31.319648 6508.3360 4.8054211e+10 0.082079158 0.034796902 92.309892 31.213063 6510.5995 4.4032548e+10 0.092690453 0.035479454 92.365159 31.106482 6512.8630 4.0557227e+10 0.10360830 0.036162007 92.421169 30.999901 6515.1265 3.7478997e+10 0.11481987 0.036844559 92.480379 30.893320 6517.3900 3.4589129e+10 0.12627167 0.037527112 92.539588 30.786739 6519.6535 3.1744666e+10 0.13789553 0.038209665 92.596212 30.680158 6521.9170 2.9129397e+10 0.14976373 0.038892217 92.651476 30.573577 6524.1805 2.6808629e+10 0.15573308 0.039491078 92.706741 30.466994 6526.4440 2.4842075e+10 0.16074662 0.040133553 92.762012 30.360399 6528.7075 2.3121514e+10 0.16511961 0.042003732 92.817283 30.253803 6530.9710 2.1417858e+10 0.16820228 0.045188060 92.876622 30.141984 6533.2345 1.9734398e+10 0.17174517 0.047619237 92.938798 30.026520 6535.4980 1.8070933e+10 0.17239273 0.048008272 92.998643 29.914052 6537.7615 1.6591064e+10 0.17342522 0.049044233 93.053907 29.807471 6540.0250 1.5290882e+10 0.17413020 0.050865907 93.109171 29.700890 6542.2885 1.4120993e+10 0.17257865 0.051111765 93.164435 29.594309 6544.5520 1.3074539e+10 0.17133733 0.052092133 93.219699 29.487727 6546.8155 1.2127355e+10 0.16959868 0.053135544 93.273896 29.381142 6549.0790 1.1304660e+10 0.16721221 0.054046779 93.325219 29.274547 6551.3425 1.0556765e+10 0.16539527 0.055355971 93.376541 29.167952 6553.6060 9.8645511e+09 0.16335804 0.055030442 93.430772 29.061367 6555.8695 9.2280265e+09 0.16097242 0.054122782 93.486036 28.954787 6558.1330 8.6430992e+09 0.15903519 0.053125976 93.540493 28.848206 6560.3965 8.1202216e+09 0.15638702 0.051916817 93.591811 28.741625 6562.6600 7.6443974e+09 0.15374003 0.050251893 93.643130 28.635044 6564.9235 7.2020197e+09 0.15143041 0.048353068 93.694447 28.531113 6567.1870 6.7952519e+09 0.14932919 0.046459076 93.745763 28.428479 6569.4505 6.3953564e+09 0.14753091 0.044881745 93.798576 28.323463 6571.7140 5.9801984e+09 0.14612783 0.044308268 93.860749 28.203557 6573.9775 5.5755307e+09 0.14391508 0.042873061 93.922922 28.083652 6576.2410 5.2013495e+09 0.14196271 0.041093996 93.975479 27.975541 6578.5045 4.8898305e+09 0.13948836 0.037852947 94.026802 27.868945 6580.7680 4.6327105e+09 0.13692067 0.035811008 94.078123 27.762355 6583.0315 4.3963108e+09 0.13484933 0.035005721 94.129442 27.655775 6585.2950 4.1594225e+09 0.13249896 0.033734924 94.180760 27.549195 6587.5585 3.9334259e+09 0.13029137 0.033282113 94.232077 27.445850 6589.8220 3.7139026e+09 0.12781130 0.031415193 94.283393 27.343216 6592.0855 3.5069691e+09 0.12473844 0.027990474 94.334708 27.239451 6594.3490 3.3271779e+09 0.12158899 0.025980936 94.386024 27.132870 6596.6125 3.1561011e+09 0.11817598 0.025724489 94.437339 27.026289 6598.8760 2.9852262e+09 0.11575371 0.024988928 94.490150 26.913003 6601.1395 2.8070894e+09 0.11565639 0.027111391 94.543451 26.797520 6603.4030 2.6326471e+09 0.11477689 0.026424693 94.595755 26.686506 6605.6665 2.4797335e+09 0.11456075 0.027224193 94.647071 26.579925 6607.9300 2.3475207e+09 0.11283301 0.023870572 94.698387 26.473344 6610.1935 2.2323164e+09 0.10999739 0.024187875 94.745881 26.366763 6612.4570 2.1238919e+09 0.10820468 0.023979289 94.793251 26.260183 6614.7205 2.0182501e+09 0.10734631 0.023444087 94.842339 26.155320 6616.9840 1.9279986e+09 0.10607759 0.023436740 94.893655 26.052687 6619.2475 1.8403221e+09 0.10552596 0.024585636 94.944971 25.950053 6621.5110 1.7646363e+09 0.10461597 0.024920068 94.992733 25.843846 6623.7745 1.6963502e+09 0.10274094 0.024778772 95.040110 25.737250 6626.0380 1.6265806e+09 0.10148852 0.026542466 95.091309 25.627381 6628.3015 1.5503498e+09 0.099727996 0.025825514 95.149040 25.511917 6630.5650 1.4732941e+09 0.098101852 0.025929694 95.205555 25.397958 6632.8285 1.3996227e+09 0.096550137 0.026131691 95.252925 25.295324 6635.0920 1.3351577e+09 0.094911160 0.026413587 95.300296 25.192691 6637.3555 1.2832578e+09 0.093193958 0.025987288 95.347666 25.087751 6639.6190 1.2302695e+09 0.092375140 0.025406822 95.395037 24.981170 6641.8825 1.1792586e+09 0.092381617 0.025151297 95.442708 24.874137 6644.1460 1.1222221e+09 0.091057984 0.025359388 95.495997 24.758674 6646.4095 1.0628187e+09 0.089771201 0.026132130 95.549286 24.643210 6648.6730 1.0083558e+09 0.088459623 0.027414810 95.597851 24.534832 6650.9365 9.6149338e+08 0.087953407 0.026469634 95.645228 24.428237 6653.2000 9.2054699e+08 0.087645455 0.027627788 95.692603 24.322696 6655.4635 8.8486130e+08 0.086277962 0.027801747 95.739973 24.220062 6657.7270 8.5087973e+08 0.084680202 0.029744441 95.787344 24.117429 6659.9905 8.1622674e+08 0.083322149 0.031627973 95.835799 24.005393 6662.2540 7.7897295e+08 0.081899311 0.032901746 95.884649 23.889928 6664.5175 7.3841684e+08 0.080995783 0.030312466 95.932786 23.780635 6666.7810 7.0230829e+08 0.080889243 0.027060789 95.980154 23.678001 6669.0445 6.6965614e+08 0.079685772 0.028309965 96.027522 23.575367 6671.3080 6.4235202e+08 0.079778328 0.026869738 96.074892 23.468992 6673.5715 6.1768281e+08 0.079120774 0.028313988 96.122262 23.362411 6675.8350 5.9420614e+08 0.076875419 0.031397754 96.170249 23.252142 6678.0985 5.7086658e+08 0.075632857 0.030870709 96.219107 23.136661 6680.3620 5.4278552e+08 0.075944657 0.029519595 96.267722 23.023274 6682.6255 5.1805510e+08 0.076586390 0.030902477 96.315089 22.920640 6684.8890 4.9616792e+08 0.076443432 0.032699207 96.362457 22.818007 6687.1525 4.7798288e+08 0.074529523 0.034257828 96.410758 22.707293 6689.4160 4.5771567e+08 0.071795087 0.033641523 96.459609 22.591828 6691.6795 4.3181283e+08 0.070744881 0.032840936 96.506408 22.481212 6693.9430 4.1098460e+08 0.069622858 0.031280568 96.549830 22.378579 6696.2065 3.9209324e+08 0.069372616 0.029761599 96.593252 22.275945 6698.4700 3.7633060e+08 0.068275887 0.030863003 96.645012 22.162474 6700.7335 3.6288196e+08 0.066452851 0.031211807 96.698304 22.047010 6702.9970 3.4559809e+08 0.066099285 0.033672874 96.745745 21.939152 6705.2605 3.3014112e+08 0.066401041 0.037131801 96.789167 21.836519 6707.5240 3.1960138e+08 0.066153714 0.040111757 96.832913 21.733120 6709.7875 3.0843684e+08 0.065308535 0.040631626 96.881771 21.617637 6712.0510 3.0134993e+08 0.063199164 0.041924734 96.930629 21.502154 6714.3145 2.9761744e+08 0.061048484 0.047327056 96.979481 21.386686 6716.5780 2.8810766e+08 0.059212409 0.049252771 97.028332 21.271222 6718.8415 2.7758169e+08 0.056872166 0.051123062 97.074162 21.162896 6721.1050 2.6693443e+08 0.057256414 0.050335551 97.117584 21.060263 6723.3685 2.5377022e+08 0.056046013 0.049574491 97.161132 20.957333 6725.6321 2.4508334e+08 0.051934865 0.041181208 97.209979 20.841869 6727.8956 2.3482389e+08 0.051070083 0.039767255 97.258826 20.726405 6730.1591 2.2449010e+08 0.049814603 0.040596982 97.307676 20.610941 6732.4226 2.1648025e+08 0.048299352 0.043818000 97.356527 20.495476 6734.6861 2.0882808e+08 0.048008539 0.049312322 97.405377 20.380012 6736.9496 2.0157818e+08 0.049806770 0.053944852 97.454228 20.264546 6739.2131 1.9310676e+08 0.050486899 0.063087291 97.500570 20.153571 6741.4766 1.8503838e+08 0.048890056 0.067117856 97.540049 20.054872 6743.7401 1.7554364e+08 0.044359255 0.076039841 97.579528 19.956172 6746.0036 1.6907160e+08 0.042747108 0.078945919 97.625893 19.845154 6748.2671 1.6426437e+08 0.038610136 0.068421901 97.674744 19.729689 6750.5306 1.5884408e+08 0.035831969 0.072910082 97.723594 19.614224 6752.7941 1.4967539e+08 0.033139528 0.073215601 97.772445 19.498760 6755.0576 1.4095995e+08 0.031420999 0.074580109 97.820269 19.383295 6757.3211 1.3567617e+08 0.029096138 0.075765721 97.864682 19.267830 6759.5846 1.3189756e+08 0.029993613 0.075961019 97.909094 19.152364 6761.8481 1.3113778e+08 0.033011575 0.078038291 97.957850 19.041250 6764.1116 1.2690778e+08 0.036457043 0.079488630 98.006698 18.930226 6766.3751 1.2345780e+08 0.037565269 0.080562149 98.052317 18.815971 6768.6386 1.1939296e+08 0.033302682 0.083153732 98.096729 18.700506 6770.9021 1.1341959e+08 0.028799973 0.089067606 98.141140 18.585042 6773.1656 1.0851970e+08 0.024517696 0.094557591 98.185549 18.469577 6775.4291 1.0364348e+08 0.020214175 0.10004758 98.230953 18.355108 6777.6926 1.0009923e+08 0.015884442 0.10553756 98.279804 18.244084 6779.9561 97811914. 0.011537691 0.11102754 98.328655 18.133060 6782.2196 95059789. 0.0071850972 0.11651753 98.373186 18.017718 6784.4831 90987445. 0.0028162148 0.12200751 98.417595 17.902254 6786.7466 86640422. -0.0015740719 0.12749750 98.462009 17.789979 6789.0101 80899152. -0.0060137258 0.13298748 98.506424 17.678938 6791.2736 78069782. -0.010420803 0.13847747 98.550836 17.565822 6793.5371 76373832. -0.014803430 0.14396745 98.595245 17.450358 6795.8006 77706677. -0.019076367 0.14945744 98.640620 17.335859 6798.0641 77426203. -0.023378535 0.15494742 98.689470 17.224835 6800.3276 75483542. -0.027739608 0.16043740 98.738321 17.113812 6802.5911 70273955. -0.032292829 0.16592739 98.789010 16.982567 6804.8546 62929320. -0.037117506 0.17141737 98.839749 16.850655 6807.1181 60506948. -0.041718205 0.17690736 98.884205 16.739485 6809.3816 58967374. -0.046381217 0.18239734 98.928617 16.628461 6811.6451 58239956. -0.051173009 0.18788733 98.973027 16.514135 6813.9086 55995260. -0.056593520 0.19337731 99.017436 16.398670 6816.1721 53669338. -0.062961792 0.19886730 99.062469 16.277587 6818.4356 52134486. -0.072043371 0.20435728 99.108146 16.150701 6820.6991 51192768. -0.10511641 0.20984726 99.153163 16.032088 6822.9626 48629760. -0.085397197 0.21533725 99.197575 15.921065 6825.2261 44908152. -0.032372655 0.22082723 99.243699 15.804391