# # 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 = 44.693772 km # Date (UTC) = 2016-12-23T10:26:36.139 # Date (julian) = 2457745.93514050 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6506.1449 7.2985610e+10 0.078864968 0.034136191 100.22973 28.146245 6508.2996 6.5698119e+10 0.089319705 0.034785946 100.28233 28.044786 6510.4544 5.8363430e+10 0.099830369 0.035435701 100.33173 27.943326 6512.6091 5.2201042e+10 0.11059340 0.036085456 100.38058 27.841867 6514.7639 4.6729432e+10 0.12156852 0.036735210 100.43016 27.740404 6516.9186 4.2136776e+10 0.13282321 0.037384965 100.48277 27.638931 6519.0733 3.7965146e+10 0.14427234 0.038034720 100.53539 27.537458 6521.2281 3.4325667e+10 0.15594418 0.038684475 100.58600 27.435992 6523.3828 3.1030817e+10 0.16383233 0.039273988 100.63486 27.334532 6525.5375 2.8157071e+10 0.16931210 0.039720868 100.68371 27.233072 6527.6923 2.5577540e+10 0.17427172 0.041219065 100.73256 27.131613 6529.8470 2.3289537e+10 0.17822730 0.043584983 100.78141 27.030154 6532.0017 2.1277187e+10 0.18110838 0.046685642 100.83026 26.928695 6534.1565 1.9454144e+10 0.18179779 0.047988328 100.87911 26.827235 6536.3112 1.7806233e+10 0.18117212 0.048068947 100.92796 26.725776 6538.4659 1.6255260e+10 0.18114771 0.049383571 100.97681 26.624308 6540.6207 1.4783542e+10 0.17962678 0.051147327 101.02567 26.522835 6542.7754 1.3441527e+10 0.17656952 0.051296628 101.07453 26.421362 6544.9301 1.2218983e+10 0.17369736 0.052398903 101.12338 26.319901 6547.0849 1.1163276e+10 0.17031790 0.053319645 101.17223 26.218441 6549.2396 1.0216292e+10 0.16709844 0.054210472 101.22023 26.116981 6551.3944 9.3614263e+09 0.16485667 0.055374176 101.26532 26.015522 6553.5491 8.6066599e+09 0.16241746 0.055059046 101.31042 25.914063 6555.7038 7.9024363e+09 0.15973616 0.054261982 101.35764 25.812604 6557.8586 7.2735081e+09 0.15732466 0.053327958 101.40649 25.711144 6560.0133 6.6904612e+09 0.15447296 0.052262320 101.45534 25.609685 6562.1680 6.1655392e+09 0.15116707 0.050720014 101.50419 25.508212 6564.3228 5.6860454e+09 0.14788551 0.048625319 101.55305 25.406739 6566.4775 5.2584139e+09 0.14527484 0.046912762 101.60099 25.305269 6568.6322 4.8861400e+09 0.14290726 0.045190484 101.64608 25.203809 6570.7870 4.5502236e+09 0.14079370 0.044591518 101.69118 25.102350 6572.9417 4.2387336e+09 0.13845270 0.043690863 101.73627 25.000891 6575.0964 3.9472330e+09 0.13573755 0.042277943 101.78136 24.899431 6577.2512 3.6776367e+09 0.13264229 0.039825828 101.82646 24.797972 6579.4059 3.4377475e+09 0.12916596 0.036847348 101.87501 24.696513 6581.5607 3.2106278e+09 0.12609878 0.035426836 101.92386 24.595053 6583.7154 3.0004996e+09 0.12312538 0.034659570 101.97174 24.494568 6585.8701 2.7947291e+09 0.12013343 0.033275130 102.01684 24.396853 6588.0249 2.6138416e+09 0.11762429 0.033371630 102.06194 24.299138 6590.1796 2.4473579e+09 0.11435420 0.030727997 102.10703 24.199178 6592.3343 2.2972266e+09 0.11093652 0.027748792 102.15212 24.097719 6594.4891 2.1634736e+09 0.10790936 0.025904051 102.19722 23.996259 6596.6438 2.0296956e+09 0.10505983 0.025724347 102.24231 23.894799 6598.7985 1.9132264e+09 0.10324445 0.025025917 102.28740 23.793339 6600.9533 1.7903237e+09 0.10334790 0.026949622 102.33250 23.691880 6603.1080 1.6822153e+09 0.10251088 0.026599335 102.37759 23.590421 6605.2627 1.5850424e+09 0.10194633 0.026885462 102.42269 23.488962 6607.4175 1.5004659e+09 0.10046989 0.024882636 102.46778 23.389809 6609.5722 1.4318160e+09 0.097499924 0.023875905 102.51288 23.292095 6611.7269 1.3542910e+09 0.095027896 0.024494878 102.55798 23.194380 6613.8817 1.2715583e+09 0.094173188 0.023897082 102.60442 23.080972 6616.0364 1.1854829e+09 0.092826953 0.023288015 102.65092 22.966828 6618.1912 1.1065244e+09 0.092414162 0.023915140 102.69659 22.862380 6620.3459 1.0444980e+09 0.091751313 0.024878660 102.74169 22.764679 6622.5006 9.8885366e+08 0.090448465 0.024624743 102.78678 22.666977 6624.6554 9.4034193e+08 0.088830830 0.025213120 102.83187 22.565785 6626.8101 8.9218885e+08 0.086959265 0.025558767 102.87697 22.464325 6628.9648 8.4377457e+08 0.085758747 0.026094826 102.92106 22.363871 6631.1196 8.0231172e+08 0.084004802 0.025942911 102.96239 22.266169 6633.2743 7.5961403e+08 0.082633036 0.026200143 103.00372 22.168467 6635.4290 7.2179174e+08 0.081048428 0.026464128 103.04734 22.068479 6637.5838 6.8333874e+08 0.079688347 0.025875498 103.09244 21.967007 6639.7385 6.4155604e+08 0.079245637 0.025364115 103.13754 21.865535 6641.8932 6.0900475e+08 0.079501208 0.025151334 103.17908 21.767627 6644.0480 5.8011199e+08 0.078622246 0.025348792 103.22042 21.669924 6646.2027 5.5289540e+08 0.077909077 0.026025078 103.26322 21.567547 6648.3574 5.2332549e+08 0.077192608 0.027203562 103.30972 21.453403 6650.5122 4.9252499e+08 0.076905945 0.026372491 103.35623 21.339260 6652.6669 4.6587641e+08 0.076721958 0.027434018 103.40144 21.240224 6654.8217 4.4223422e+08 0.075870743 0.027686193 103.44653 21.142522 6656.9764 4.1799608e+08 0.074152267 0.028880390 103.49066 21.044817 6659.1311 3.9656781e+08 0.072757398 0.031807246 103.53200 20.947102 6661.2859 3.7175427e+08 0.071600129 0.032680545 103.57333 20.849388 6663.4406 3.5023382e+08 0.070432056 0.032361112 103.61467 20.749438 6665.5953 3.3447395e+08 0.070130620 0.027571657 103.65601 20.647978 6667.7501 3.1591207e+08 0.069499937 0.027378971 103.69734 20.546519 6669.9048 3.0667957e+08 0.068656966 0.027426406 103.74351 20.437146 6672.0595 2.9160540e+08 0.068269449 0.026914109 103.79002 20.327229 6674.2143 2.7086661e+08 0.067225507 0.029135545 103.83357 20.224279 6676.3690 2.5537508e+08 0.064761056 0.031951549 103.87491 20.126578 6678.5237 2.4014875e+08 0.063624643 0.030586311 103.91624 20.028876 6680.6785 2.2744098e+08 0.063981739 0.029587929 103.96228 19.916225 6682.8332 2.2026350e+08 0.064256282 0.031061152 104.00878 19.802081 6684.9880 2.0779911e+08 0.063736690 0.032704226 104.05248 19.696870 6687.1427 2.0012250e+08 0.061569244 0.034263322 104.09382 19.599155 6689.2974 1.9288938e+08 0.058602889 0.033748297 104.13516 19.501440 6691.4522 1.8289771e+08 0.057324325 0.032894583 104.17650 19.403736 6693.6069 1.7281352e+08 0.056088379 0.031395887 104.21783 19.306034 6695.7616 1.6355866e+08 0.055482528 0.029719572 104.25938 19.205624 6697.9164 1.5936822e+08 0.054497759 0.030207233 104.30165 19.095708 6700.0711 1.5120091e+08 0.052578680 0.030720455 104.34392 18.985791 6702.2258 1.4248626e+08 0.050720466 0.033057060 104.38540 18.886335 6704.3806 1.3511196e+08 0.050702597 0.036364433 104.42673 18.788633 6706.5353 1.2903348e+08 0.050246135 0.039378061 104.46907 18.688547 6708.6900 1.2799991e+08 0.049730753 0.040795008 104.51558 18.578631 6710.8448 1.2700403e+08 0.048188951 0.040661849 104.56208 18.468715 6712.9995 1.2362892e+08 0.046162675 0.043685718 104.60118 18.368923 6715.1542 1.1671259e+08 0.043942757 0.047536348 104.63877 18.271208 6717.3090 1.0977976e+08 0.041667697 0.049855156 104.67785 18.171432 6719.4637 1.0537263e+08 0.039806981 0.050929273 104.72436 18.061516 6721.6185 98838979. 0.039924658 0.050490242 104.77086 17.951599 6723.7732 95681077. 0.038331456 0.049800164 104.81397 17.841683 6725.9279 89310073. 0.034235938 0.040996390 104.85624 17.731767 6728.0827 87210624. 0.033784575 0.039745255 104.89646 17.627201 6730.2374 86781778. 0.032852717 0.040704399 104.93404 17.529499 6732.3921 79923397. 0.031130998 0.043812399 104.97162 17.431798 6734.5469 76208078. 0.030751683 0.049320696 105.01613 17.324606 6736.7016 70668470. 0.032224075 0.053007450 105.06263 17.214689 6738.8563 69749477. 0.033357032 0.062035617 105.10739 17.104772 6741.0111 65201079. 0.031902819 0.065790268 105.14967 16.994856 6743.1658 60702829. 0.027461124 0.072165971 105.19173 16.885501 6745.3205 60028644. 0.024175654 0.078701640 105.22931 16.787787 6747.4753 58348820. 0.018501298 0.067197541 105.26690 16.690072 6749.6300 57155077. 0.014765834 0.072105435 105.30629 16.589285 6751.7847 52389945. 0.0061364916 0.074043467 105.34856 16.483597 6753.9395 46727999. -0.0084056816 0.076017632 105.39092 16.377824 6756.0942 46139588. -0.074553231 0.074409350 105.43742 16.267908 6758.2490 45959320. -0.022872005 0.074231771 105.48393 16.157992 6760.4037 45908878. 0.090257518 0.076831090 105.52766 16.048076