# # 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 = 46.171560 km # Date (UTC) = 2016-01-29T09:02:04.390 # Date (julian) = 2457416.87643970 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6491.0795 1.3650900e+11 0.021511450 0.029593254 -4.6925928 62.330118 6492.9668 1.1610745e+11 0.027365576 0.030162374 -5.0184975 62.144945 6494.8542 9.6844497e+10 0.032819781 0.030731494 -5.2914589 61.994659 6496.7415 8.2584520e+10 0.037690589 0.031300614 -5.5455432 61.855403 6498.6288 7.3899574e+10 0.042225301 0.031869734 -5.7529164 61.736905 6500.5162 6.7674604e+10 0.046858964 0.032438854 -5.9643485 61.615508 6502.4035 6.2483485e+10 0.051830114 0.033007974 -6.2132062 61.467378 6504.2908 5.7038452e+10 0.057172491 0.033577094 -6.4596343 61.321678 6506.1782 5.1720762e+10 0.063072490 0.034146214 -6.7025679 61.179472 6508.0655 4.7065267e+10 0.069838370 0.034715334 -6.9411792 61.033012 6509.9528 4.2725415e+10 0.077572912 0.035284454 -7.1781318 60.884917 6511.8401 3.8843010e+10 0.086470333 0.035853574 -7.4151392 60.736787 6513.7275 3.5296722e+10 0.096537527 0.036422694 -7.6480391 60.588658 6515.6148 3.1735020e+10 0.10753182 0.036991814 -7.8731959 60.440528 6517.5021 2.8553846e+10 0.11964004 0.037560934 -8.1022212 60.292422 6519.3895 2.5958691e+10 0.13300461 0.038130055 -8.3332493 60.144327 6521.2768 2.4162742e+10 0.14763718 0.038699175 -8.5173477 60.020170 6523.1641 2.2837658e+10 0.15963278 0.039219795 -8.7000335 59.896734 6525.0515 2.1484340e+10 0.16916767 0.039776340 -8.9172715 59.749951 6526.9388 1.9962804e+10 0.17499620 0.040652314 -9.1365032 59.601821 6528.8261 1.8365958e+10 0.17766894 0.042097859 -9.3557349 59.453692 6530.7135 1.7035607e+10 0.17940292 0.044827541 -9.5484866 59.316838 6532.6008 1.6012375e+10 0.18129757 0.047186098 -9.7212640 59.188490 6534.4881 1.5052831e+10 0.18111295 0.048081107 -9.9128758 59.049376 6536.3755 1.4063374e+10 0.17965824 0.048126440 -10.120257 58.901246 6538.2628 1.3113487e+10 0.17947858 0.049284650 -10.298026 58.770038 6540.1501 1.2232147e+10 0.17895305 0.050925027 -10.470837 58.641663 6542.0375 1.1445406e+10 0.17673253 0.051016461 -10.667460 58.496866 6543.9248 1.0711053e+10 0.17468676 0.051624610 -10.863388 58.351572 6545.8121 1.0042528e+10 0.17289372 0.052462843 -11.026324 58.223199 6547.6995 9.4448516e+09 0.17175222 0.053553356 -11.193108 58.091795 6549.5868 8.8667351e+09 0.17006214 0.054564267 -11.388592 57.937775 6551.4741 8.2879966e+09 0.16824396 0.055402176 -11.570078 57.794786 6553.3615 7.7653456e+09 0.16637214 0.055153368 -11.733014 57.666413 6555.2488 7.2984471e+09 0.16430591 0.054644324 -11.904347 57.527645 6557.1361 6.8353209e+09 0.16183562 0.053780787 -12.088028 57.373591 6559.0235 6.3577649e+09 0.15862203 0.052384535 -12.253294 57.237950 6560.9108 5.9205551e+09 0.15541389 0.051453120 -12.411292 57.109575 6562.7981 5.6076849e+09 0.15232008 0.050120467 -12.565855 56.981219 6564.6854 5.3266322e+09 0.14871788 0.048460952 -12.718886 56.852871 6566.5728 5.0028195e+09 0.14535540 0.046858864 -12.888383 56.707402 6568.4601 4.6603151e+09 0.14272045 0.045348709 -13.066138 56.553346 6570.3474 4.3045397e+09 0.14091959 0.044773586 -13.214906 56.424415 6572.2348 4.0063008e+09 0.13915575 0.044095705 -13.363029 56.296042 6574.1221 3.8046559e+09 0.13669127 0.042796357 -13.506448 56.167667 6576.0094 3.6071970e+09 0.13447737 0.041360527 -13.649634 56.039292 6577.8968 3.4015915e+09 0.13236202 0.038811759 -13.819391 55.887097 6579.7841 3.1963019e+09 0.12999357 0.036639440 -13.983159 55.738025 6581.6714 2.9845028e+09 0.12777048 0.035393288 -14.121380 55.604740 6583.5588 2.8149058e+09 0.12570709 0.034738842 -14.259608 55.472507 6585.4461 2.6756064e+09 0.12359918 0.033614125 -14.397857 55.344134 6587.3334 2.5414548e+09 0.12161812 0.033232246 -14.536106 55.215761 6589.2208 2.4300177e+09 0.11927046 0.032607997 -14.674355 55.087385 6591.1081 2.3280049e+09 0.11643387 0.029079933 -14.811797 54.958203 6592.9954 2.2331662e+09 0.11397293 0.027106659 -14.945108 54.824891 6594.8828 2.1296474e+09 0.11120966 0.025687929 -15.082105 54.688714 6596.7701 2.0039553e+09 0.10828829 0.025723772 -15.242084 54.534660 6598.6574 1.8758931e+09 0.10609964 0.025093286 -15.387816 54.389961 6600.5448 1.7530420e+09 0.10542303 0.026109800 -15.516164 54.256676 6602.4321 1.6599623e+09 0.10410419 0.027147904 -15.644524 54.125476 6604.3194 1.5847932e+09 0.10219249 0.026260940 -15.772898 53.997101 6606.2068 1.5132848e+09 0.10096005 0.027132429 -15.901272 53.866755 6608.0941 1.4459459e+09 0.098289844 0.023729884 -16.029646 53.733446 6609.9814 1.3735330e+09 0.095428704 0.023997460 -16.156173 53.601982 6611.8688 1.3009664e+09 0.093248000 0.024404449 -16.279610 53.473606 6613.7561 1.2357056e+09 0.092658270 0.023850999 -16.403047 53.343510 6615.6434 1.1791950e+09 0.091608296 0.023271328 -16.526483 53.210198 6617.5307 1.1305983e+09 0.090987204 0.023615217 -16.649919 53.076887 6619.4181 1.0824989e+09 0.090511178 0.024626790 -16.773356 52.943575 6621.3054 1.0327213e+09 0.089828280 0.024988216 -16.895314 52.811743 6623.1927 9.7858266e+08 0.088658034 0.024563235 -17.013789 52.683395 6625.0801 9.2635361e+08 0.087674909 0.025493161 -17.130926 52.553695 6626.9674 8.8039207e+08 0.085873958 0.025358333 -17.244488 52.420384 6628.8547 8.3752642e+08 0.085048895 0.026050129 -17.359269 52.287072 6630.7421 7.9839279e+08 0.083670940 0.025930130 -17.477767 52.153761 6632.6294 7.5743660e+08 0.082490486 0.026107816 -17.595172 52.020449 6634.5167 7.1416059e+08 0.081249818 0.026364536 -17.708733 51.887138 6636.4041 6.7076703e+08 0.079970531 0.026392836 -17.822294 51.754796 6638.2914 6.3459305e+08 0.079091349 0.025658947 -17.935857 51.626423 6640.1787 5.9913947e+08 0.079169623 0.025248784 -18.048575 51.497205 6642.0661 5.6917877e+08 0.079134407 0.025154400 -18.157199 51.363893 6643.9534 5.3772910e+08 0.078121086 0.025336570 -18.265820 51.230584 6645.8407 5.0661415e+08 0.077236818 0.025845536 -18.374422 51.097299 6647.7281 4.8091287e+08 0.076243739 0.026821109 -18.483027 50.964011 6649.6154 4.5202763e+08 0.075370100 0.026785395 -18.591652 50.830699 6651.5027 4.3035907e+08 0.074943982 0.026869434 -18.700276 50.697388 6653.3901 4.0987079e+08 0.074656871 0.027724812 -18.808900 50.564076 6655.2774 3.9236299e+08 0.073650416 0.027724835 -18.917182 50.430765 6657.1647 3.7430344e+08 0.072290941 0.029092186 -19.020869 50.297453 6659.0521 3.5423214e+08 0.071175082 0.031823740 -19.124556 50.164142 6660.9394 3.3360809e+08 0.070357292 0.032479857 -19.228242 50.030832 6662.8267 3.1720651e+08 0.069582198 0.032580432 -19.331928 49.897614 6664.7141 3.0147829e+08 0.069091814 0.029593398 -19.435616 49.769238 6666.6014 2.8400884e+08 0.069170461 0.027025783 -19.539263 49.640893 6668.4887 2.7281000e+08 0.068463147 0.027903255 -19.624071 49.526504 6670.3760 2.6573783e+08 0.068393030 0.027154415 -19.708710 49.412240 6672.2634 2.6560648e+08 0.068134063 0.027032260 -19.802231 49.285987 6674.1507 2.6013335e+08 0.067365277 0.029081928 -19.900961 49.152702 6676.0380 2.5056135e+08 0.065423134 0.031738245 -19.999702 49.019402 6677.9254 2.4879226e+08 0.064525020 0.031042696 -20.098450 48.886093 6679.8127 2.4609432e+08 0.064511399 0.029596184 -20.197200 48.752782 6681.7000 2.3905241e+08 0.065206168 0.030194420 -20.295949 48.619470 6683.5874 2.2334655e+08 0.065589629 0.032049385 -20.391964 48.486159 6685.4747 1.9591296e+08 0.065476139 0.033206245 -20.485775 48.352847 6687.3620 1.7482119e+08 0.063817709 0.034140987 -20.579587 48.219535 6689.2494 1.5490297e+08 0.061601277 0.033791550 -20.673399 48.086223 6691.1367 1.3667163e+08 0.060934635 0.032969010 -20.767211 47.952910 6693.0240 1.2118240e+08 0.060397217 0.031595843 -20.861023 47.819599 6694.9114 1.0810080e+08 0.060030559 0.029983697 -20.954826 47.686300 6696.7987 1.0305024e+08 0.059715721 0.030007629 -21.048619 47.553015 6698.6860 99980006. 0.058809710 0.031159475 -21.134446 47.428331 6700.5734 94520079. 0.057461126 0.031092999 -21.210622 47.314068 6702.4607 87423204. 0.056762482 0.033244598 -21.287931 47.198104 6704.3480 84562209. 0.057112772 0.036348454 -21.376804 47.064793 6706.2354 83647630. 0.057113111 0.038856031 -21.465677 46.931481 6708.1227 83115811. 0.056906109 0.040177186 -21.554552 46.798170 6710.0100 80240954. 0.055996490 0.040498457 -21.643426 46.664858 6711.8974 79235575. 0.054196159 0.041713179 -21.732301 46.531547 6713.7847 82226433. 0.052419931 0.046524676 -21.821111 46.398237 6715.6720 86300451. 0.050983167 0.048065913 -21.905048 46.264925 6717.5594 84979579. 0.049269631 0.049839670 -21.988988 46.131614 6719.4467 82557934. 0.047758267 0.050945455 -22.077799 45.998302 6721.3340 83290471. 0.048195103 0.050404540 -22.166673 45.864991 6723.2214 84991972. 0.047151750 0.049492395 -22.250779 45.726954 6725.1087 89082607. 0.043327511 0.041508132 -22.334699 45.588733 6726.9960 92166345. 0.041955744 0.040960350 -22.418635 45.455112 6728.8833 90972965. 0.041856180 0.040880091 -22.502571 45.321800 6730.7707 88681878. 0.040371794 0.041435597 -22.571719 45.205850 6732.6580 87150263. 0.039277936 0.043861347 -22.639431 45.091587 6734.5453 85972443. 0.038987337 0.049320788 -22.716043 44.966874 6736.4327 88081202. 0.040644403 0.051990760 -22.799980 44.833561 6738.3200 86514598. 0.041688533 0.059082879 -22.881334 44.700249 6740.2073 84664667. 0.041396761 0.064404566 -22.960333 44.566938 6742.0947 80217145. 0.039337956 0.068841436 -23.039332 44.433626 6743.9820 73474115. 0.034952974 0.077672011 -23.118332 44.300315 6745.8693 69595095. 0.033950348 0.078932348 -23.197331 44.167003 6747.7567 67111260. 0.029650280 0.067100669 -23.276330 44.033692 6749.6440 64132544. 0.027769416 0.072101605 -23.355322 43.900392 6751.5313 60899788. 0.024916278 0.073936321 -23.434306 43.767107 6753.4187 57110823. 0.022560847 0.074332165 -23.511215 43.633811 6755.3060 50830700. 0.019441530 0.074471185 -23.585276 43.500499 6757.1933 49530584. 0.015717961 0.076153354 -23.661295 43.367188 6759.0807 45232367. 0.012156931 0.075839419 -23.740295 43.233878 6760.9680 41412169. -0.012120302 0.077907190 -23.817465 43.100567 6762.8553 38457471. 0.0095639338 0.076671135 -23.891526 42.967255 6764.7427 38082851. 0.056835977 0.079518864 -23.965588 42.833944