# # 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 = 43.023473 km # Date (UTC) = 2015-12-19T09:34:57.139 # Date (julian) = 2457375.89927244 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6500.8698 6.1267062e+10 0.046737057 0.032545499 -23.390747 50.426171 6502.9178 5.6147876e+10 0.054943547 0.033163074 -23.490754 50.344024 6504.9659 5.1710887e+10 0.063505509 0.033780649 -23.588233 50.259349 6507.0139 4.7551908e+10 0.072359950 0.034398224 -23.684668 50.173630 6509.0619 4.3682714e+10 0.081538234 0.035015798 -23.781103 50.087911 6511.1099 4.0132803e+10 0.091084182 0.035633373 -23.877537 50.002191 6513.1579 3.6919926e+10 0.10104437 0.036250948 -23.973971 49.916471 6515.2059 3.4131973e+10 0.11150199 0.036868523 -24.070407 49.830749 6517.2540 3.1668330e+10 0.12243515 0.037486097 -24.166855 49.745017 6519.3020 2.9300062e+10 0.13373431 0.038103672 -24.263302 49.659286 6521.3500 2.7004775e+10 0.14536441 0.038721247 -24.358644 49.573558 6523.3980 2.4788085e+10 0.15330160 0.039277762 -24.451507 49.487839 6525.4460 2.2751850e+10 0.15953626 0.039731309 -24.544370 49.402120 6527.4941 2.0895308e+10 0.16523925 0.041075167 -24.637233 49.316401 6529.5421 1.9206470e+10 0.16973765 0.043099275 -24.730096 49.230680 6531.5901 1.7724179e+10 0.17355520 0.046087580 -24.822960 49.144960 6533.6381 1.6377726e+10 0.17633355 0.047790769 -24.915823 49.059240 6535.6861 1.5095821e+10 0.17700128 0.047926652 -25.008686 48.973522 6537.7342 1.3873471e+10 0.17802586 0.049031349 -25.101549 48.887803 6539.7822 1.2773248e+10 0.17771868 0.050590436 -25.183056 48.809867 6541.8302 1.1877720e+10 0.17541421 0.051057303 -25.263427 48.732710 6543.8782 1.1132043e+10 0.17304764 0.051612385 -25.343798 48.655554 6545.9262 1.0458910e+10 0.17078659 0.052463865 -25.431291 48.571561 6547.9743 9.8054463e+09 0.16955429 0.053657856 -25.520582 48.485842 6550.0223 9.1475065e+09 0.16815404 0.054990937 -25.609873 48.400124 6552.0703 8.5441685e+09 0.16631669 0.055569073 -25.699165 48.314403 6554.1183 7.9769961e+09 0.16391014 0.054834863 -25.788456 48.228683 6556.1663 7.4525240e+09 0.16176492 0.053988672 -25.877040 48.142960 6558.2144 6.9775209e+09 0.15986496 0.053056650 -25.962771 48.057229 6560.2624 6.5278072e+09 0.15738767 0.052037747 -26.048502 47.971497 6562.3104 6.1081355e+09 0.15466288 0.050584555 -26.135655 47.885770 6564.3584 5.7213368e+09 0.15177518 0.048609166 -26.224946 47.800051 6566.4064 5.3553547e+09 0.14941797 0.046952968 -26.314237 47.714332 6568.4544 5.0193372e+09 0.14738404 0.045353916 -26.401388 47.628613 6570.5025 4.7096260e+09 0.14548516 0.044709370 -26.487107 47.542893 6572.5505 4.4252109e+09 0.14321023 0.043914906 -26.572827 47.457172 6574.5985 4.1727871e+09 0.14034918 0.042567544 -26.655690 47.371453 6576.6465 3.9271935e+09 0.13734992 0.040627229 -26.737838 47.285734 6578.6945 3.6894071e+09 0.13387061 0.037552847 -26.819986 47.200015 6580.7426 3.4654101e+09 0.13056074 0.035834517 -26.902145 47.114283 6582.7906 3.2669618e+09 0.12777794 0.035078655 -26.984303 47.028552 6584.8386 3.0959964e+09 0.12512900 0.034058692 -27.067176 46.942823 6586.8866 2.9270476e+09 0.12289919 0.033159835 -27.152896 46.857104 6588.9346 2.7591843e+09 0.12112270 0.033067804 -27.238617 46.771385 6590.9827 2.5906956e+09 0.11889722 0.029234164 -27.321475 46.685665 6593.0307 2.4316338e+09 0.11707585 0.027073698 -27.400051 46.599945 6595.0787 2.2871789e+09 0.11484776 0.025631732 -27.478627 46.514225 6597.1267 2.1521185e+09 0.11244732 0.025682740 -27.559349 46.428505 6599.1747 2.0322744e+09 0.11075555 0.024940240 -27.641497 46.342786 6601.2228 1.9176519e+09 0.11063779 0.027150595 -27.723645 46.257067 6603.2708 1.8131784e+09 0.10943671 0.026502975 -27.802941 46.171338 6605.3188 1.7108789e+09 0.10870252 0.026932487 -27.881527 46.085607 6607.3668 1.6103878e+09 0.10706971 0.024982674 -27.960114 45.999848 6609.4148 1.5184252e+09 0.10401023 0.023829157 -28.038690 45.910578 6611.4629 1.4324634e+09 0.10122603 0.024663292 -28.117267 45.821287 6613.5109 1.3583284e+09 0.10000581 0.023761031 -28.195844 45.732716 6615.5589 1.2873904e+09 0.098351971 0.023268727 -28.274420 45.646995 6617.6069 1.2162437e+09 0.097160877 0.023640469 -28.352996 45.561275 6619.6549 1.1494855e+09 0.096158225 0.024683938 -28.431573 45.475556 6621.7029 1.0846412e+09 0.094758688 0.024856451 -28.510150 45.389837 6623.7510 1.0280154e+09 0.092611943 0.024770048 -28.588726 45.304118 6625.7990 9.7568552e+08 0.091068219 0.026351037 -28.665159 45.218391 6627.8470 9.2790332e+08 0.088899670 0.025643996 -28.740173 45.132659 6629.8950 8.8315159e+08 0.087364188 0.025947281 -28.815187 45.046928 6631.9430 8.3377852e+08 0.085651181 0.026026560 -28.890194 44.961206 6633.9911 7.8892501e+08 0.084402987 0.026325283 -28.965199 44.875488 6636.0391 7.4866429e+08 0.083228101 0.026534575 -29.040204 44.789769 6638.0871 7.1627239e+08 0.082441759 0.025667847 -29.115209 44.704048 6640.1351 6.8642788e+08 0.082496219 0.025254120 -29.190213 44.618328 6642.1831 6.5260572e+08 0.082632156 0.025159191 -29.264493 44.531882 6644.2312 6.2361861e+08 0.081693227 0.025368590 -29.335927 44.442591 6646.2792 5.9396056e+08 0.080776532 0.026064660 -29.407360 44.353300 6648.3272 5.6656808e+08 0.079817495 0.027183313 -29.480237 44.265444 6650.3752 5.3994026e+08 0.079247769 0.026341135 -29.555251 44.179714 6652.4232 5.1374222e+08 0.078778293 0.027366971 -29.630265 44.093984 6654.4713 4.8881087e+08 0.077892429 0.027835466 -29.703118 44.008260 6656.5193 4.6656533e+08 0.076073345 0.028479184 -29.774551 43.922539 6658.5673 4.4393387e+08 0.074606571 0.031067190 -29.845984 43.836819 6660.6153 4.2531249e+08 0.073231381 0.032185289 -29.924596 43.742486 6662.6633 4.0695216e+08 0.071919868 0.032672102 -30.004959 43.646050 6664.7114 3.8520028e+08 0.071048382 0.029603275 -30.081383 43.551866 6666.7594 3.6682377e+08 0.070709776 0.027056568 -30.149245 43.462574 6668.8074 3.4798090e+08 0.069501091 0.028185259 -30.217106 43.373283 6670.8554 3.3352678e+08 0.069384194 0.026932334 -30.286813 43.285826 6672.9034 3.3647770e+08 0.068766623 0.027403244 -30.358256 43.200095 6674.9514 2.9246148e+08 0.067623779 0.029757402 -30.429698 43.114363 6676.9995 2.5740416e+08 0.065832344 0.032357876 -30.498577 43.028640 6679.0475 2.3608456e+08 0.065583068 0.030228529 -30.566438 42.942919 6681.0955 2.2611768e+08 0.066856111 0.029730630 -30.634299 42.857199 6683.1435 2.4969757e+08 0.067239594 0.031398921 -30.709932 42.761664 6685.1915 2.4166979e+08 0.067194437 0.032907158 -30.786277 42.665229 6687.2396 2.2752360e+08 0.065670047 0.034209292 -30.858998 42.573372 6689.2876 2.1778833e+08 0.063387885 0.033757152 -30.926859 42.487651 6691.3356 2.0548026e+08 0.062761079 0.032922082 -30.994721 42.401931 6693.3836 1.9628934e+08 0.062156051 0.031472482 -31.062582 42.313970 6695.4316 1.8469865e+08 0.062060416 0.029780186 -31.130443 42.224678 6697.4797 1.7538119e+08 0.061682150 0.030151967 -31.198304 42.135387 6699.5277 1.6924032e+08 0.060524667 0.031103534 -31.266173 42.049043 6701.5757 1.6407946e+08 0.059020129 0.032254162 -31.334044 41.963313 6703.6237 1.6024117e+08 0.059287137 0.035235980 -31.402040 41.877281 6705.6717 1.5318899e+08 0.059570519 0.037862822 -31.474367 41.780844 6707.7198 1.4804552e+08 0.059432572 0.040083722 -31.546694 41.684407 6709.7678 1.3505013e+08 0.058845208 0.040644200 -31.614685 41.593753 6711.8158 1.3060428e+08 0.057069734 0.041620385 -31.678975 41.508033 6713.8638 1.2723124e+08 0.055200917 0.046810859 -31.743266 41.422314 6715.9118 1.2338287e+08 0.053743258 0.048311187 -31.813501 41.328667 6717.9599 1.1986841e+08 0.051947769 0.049814897 -31.885828 41.232230 6720.0079 1.0644768e+08 0.051291919 0.050418854 -31.956138 41.137587 6722.0559 1.0090053e+08 0.051638928 0.050536106 -32.020427 41.048296 6724.1039 98098732. 0.049704529 0.049058929 -32.084716 40.959005 6726.1519 97268981. 0.046344464 0.040952738 -32.150824 40.866483 6728.2000 93933784. 0.046022319 0.039911495 -32.219143 40.770032 6730.2480 82690288. 0.045272213 0.040718899 -32.287463 40.673580 6732.2960 77063449. 0.044246051 0.043794700 -32.351903 40.587463 6734.3440 73649807. 0.043990421 0.049332902 -32.416193 40.501743 6736.3920 69988437. 0.046084642 0.051837089 -32.481139 40.414277 6738.4400 69058262. 0.047402298 0.059743751 -32.549447 40.317840 6740.4881 64980955. 0.047446235 0.064884139 -32.617755 40.221403 6742.5361 62403927. 0.045443105 0.069917024 -32.686064 40.124967 6744.5841 61431955. 0.042669814 0.078245202 -32.754374 40.028532 6746.6321 57294018. 0.041539021 0.071638133 -32.821274 39.933423 6748.6801 52297096. 0.052921033 0.070595155 -32.881991 39.844132 6750.7282 51598891. 0.039780784 0.073247497 -32.942709 39.754841 6752.7762 52311902. 0.015329189 0.073236289 -33.006356 39.662792