# # 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 = 48.421886 km # Date (UTC) = 2016-01-04T09:28:02.437 # Date (julian) = 2457391.89447265 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6506.0749 5.4241180e+10 0.075642411 0.034115089 114.51357 31.969536 6508.3291 4.9498711e+10 0.086495366 0.034794840 114.57038 31.860623 6510.5834 4.4938487e+10 0.097514587 0.035474592 114.63672 31.736788 6512.8376 4.0638235e+10 0.10870836 0.036154343 114.70306 31.612952 6515.0918 3.6728463e+10 0.12013085 0.036834095 114.75928 31.504958 6517.3460 3.3428960e+10 0.13188119 0.037513846 114.81432 31.398814 6519.6002 3.0672260e+10 0.14396646 0.038193598 114.87177 31.288003 6521.8544 2.7876576e+10 0.15615379 0.038873349 114.93369 31.168590 6524.1086 2.5239715e+10 0.16245888 0.039465549 114.99499 31.050022 6526.3628 2.2929793e+10 0.16758719 0.040048477 115.05003 30.939933 6528.6170 2.0986930e+10 0.17225258 0.041931987 115.10508 30.829844 6530.8713 1.9294354e+10 0.17552782 0.045048442 115.16388 30.714652 6533.1255 1.7553722e+10 0.17896695 0.047572908 115.22580 30.595238 6535.3797 1.5912654e+10 0.17960792 0.048059593 115.28462 30.479622 6537.6339 1.4487535e+10 0.18006578 0.048984078 115.33573 30.373478 6539.8881 1.3315166e+10 0.17999598 0.050718655 115.38684 30.267335 6542.1423 1.2270956e+10 0.17753410 0.051056269 115.44597 30.151338 6544.3965 1.1245026e+10 0.17480590 0.051966018 115.50789 30.031924 6546.6507 1.0299499e+10 0.17171691 0.052999979 115.56650 29.917007 6548.9050 9.4834844e+09 0.16841737 0.053937895 115.62153 29.806933 6551.1592 8.8267478e+09 0.16582558 0.055291619 115.67657 29.696859 6553.4134 8.2537042e+09 0.16361362 0.055127270 115.72793 29.590457 6555.6676 7.7344485e+09 0.16086834 0.054292434 115.77904 29.484298 6557.9218 7.2319068e+09 0.15838677 0.053288323 115.83267 29.372914 6560.1760 6.6932342e+09 0.15544410 0.052115616 115.89017 29.253500 6562.4302 6.1650829e+09 0.15234434 0.050470534 115.94734 29.135855 6564.6844 5.7050535e+09 0.14944362 0.048461413 116.00237 29.029711 6566.9386 5.3278302e+09 0.14696210 0.046651897 116.05741 28.923567 6569.1929 5.0039953e+09 0.14448459 0.044864976 116.11390 28.809601 6571.4471 4.6746139e+09 0.14260214 0.044381173 116.17139 28.690188 6573.7013 4.3545946e+09 0.14005766 0.043094724 116.22679 28.575134 6575.9555 4.0819323e+09 0.13733382 0.041416053 116.27789 28.468990 6578.2097 3.8384700e+09 0.13441541 0.038318475 116.32900 28.362846 6580.4639 3.6053627e+09 0.13130487 0.036092032 116.38512 28.246289 6582.7181 3.3586636e+09 0.12868192 0.035098373 116.44262 28.126875 6584.9723 3.1284907e+09 0.12607432 0.033985844 116.49471 28.014404 6587.2265 2.9493284e+09 0.12320214 0.033208563 116.54189 27.908246 6589.4808 2.7880233e+09 0.12022236 0.032092199 116.58907 27.802088 6591.7350 2.6297485e+09 0.11672046 0.028372584 116.64636 27.682936 6593.9892 2.4676354e+09 0.11326707 0.026182583 116.70386 27.563523 6596.2434 2.3095999e+09 0.10964969 0.025726167 116.75676 27.453654 6598.4976 2.1852302e+09 0.10710990 0.025169592 116.80787 27.347510 6600.7518 2.0758368e+09 0.10653641 0.026535467 116.85932 27.239037 6603.0060 1.9579167e+09 0.10575840 0.026659706 116.91239 27.119623 6605.2602 1.8410774e+09 0.10521027 0.026883362 116.96546 27.000210 6607.5144 1.7311166e+09 0.10375411 0.024691151 117.01674 26.892931 6609.7687 1.6357670e+09 0.10086849 0.023934260 117.06784 26.786787 6612.0229 1.5527565e+09 0.098497286 0.024303662 117.11968 26.675717 6614.2771 1.4626978e+09 0.097667256 0.023749592 117.17276 26.556286 6616.5313 1.3710459e+09 0.096402169 0.023365686 117.22519 26.438751 6618.7855 1.2949771e+09 0.095827303 0.024363947 117.27237 26.336539 6621.0397 1.2284871e+09 0.095066454 0.025076282 117.31954 26.234326 6623.2939 1.1692516e+09 0.093479508 0.024600722 117.37005 26.122372 6625.5481 1.1061776e+09 0.092161918 0.026051701 117.42313 26.002958 6627.8024 1.0445336e+09 0.090344226 0.025626747 117.47440 25.887596 6630.0566 9.9079140e+08 0.088974206 0.025928441 117.52158 25.781452 6632.3108 9.5087241e+08 0.087065798 0.026069610 117.56875 25.675308 6634.5650 9.1652057e+08 0.085375568 0.026368056 117.62042 25.559059 6636.8192 8.7439065e+08 0.083680029 0.026231624 117.67349 25.439645 6639.0734 8.2906698e+08 0.082461775 0.025601836 117.72656 25.322445 6641.3276 7.7765723e+08 0.083002216 0.025149413 117.77964 25.207455 6643.5818 7.2841937e+08 0.082130899 0.025280468 117.83130 25.094579 6645.8360 6.9055399e+08 0.080909113 0.025843340 117.87848 24.988422 6648.0903 6.6149984e+08 0.079787874 0.027024702 117.92566 24.882264 6650.3445 6.3199224e+08 0.079140685 0.026334095 117.97694 24.766879 6652.5987 6.0271261e+08 0.078895717 0.027415242 118.03001 24.647466 6654.8529 5.7068321e+08 0.078114388 0.027672886 118.07881 24.535535 6657.1071 5.4442034e+08 0.076391677 0.029025347 118.12205 24.433323 6659.3613 5.2746208e+08 0.074992604 0.031759228 118.16530 24.331110 6661.6155 5.0764066e+08 0.073714860 0.032848450 118.21730 24.213566 6663.8697 4.8441135e+08 0.072460683 0.032242187 118.27038 24.094152 6666.1239 4.5814510e+08 0.072641226 0.026932748 118.32066 23.977526 6668.3782 4.3257038e+08 0.071865400 0.027805419 118.36931 23.862536 6670.6324 4.0808844e+08 0.071706595 0.027035665 118.41960 23.745913 6672.8866 3.8646971e+08 0.071472481 0.027393479 118.47267 23.626500 6675.1408 3.6793707e+08 0.069911462 0.030068030 118.52467 23.508945 6677.3950 3.5347365e+08 0.067982540 0.031796675 118.56792 23.406719 6679.6492 3.3878079e+08 0.067861095 0.029731287 118.61117 23.304493 6681.9034 3.2094857e+08 0.068767342 0.030350455 118.65747 23.192560 6684.1576 3.0588515e+08 0.068978117 0.032662091 118.70612 23.073147 6686.4119 2.9356100e+08 0.067988548 0.034000706 118.75612 22.955076 6688.6661 2.7914585e+08 0.065144557 0.033938941 118.80919 22.840085 6690.9203 2.6687826e+08 0.063836938 0.033010399 118.86208 22.724905 6693.1745 2.5283483e+08 0.062923563 0.031544229 118.91073 22.605491 6695.4287 2.4213989e+08 0.062383813 0.029780727 118.95938 22.486078 6697.6829 2.3275448e+08 0.061694637 0.030177689 119.00380 22.380109 6699.9371 2.1867871e+08 0.060265065 0.030725737 119.04705 22.277898 6702.1913 2.0572642e+08 0.058844100 0.033029510 119.09157 22.171594 6704.4455 1.9495242e+08 0.059400788 0.036396339 119.14023 22.052181 6706.6998 1.9141404e+08 0.059328637 0.039664275 119.18888 21.932767 6708.9540 1.8644807e+08 0.058898748 0.041082415 119.23753 21.817673 6711.2082 1.7976264e+08 0.057251806 0.040929083 119.28618 21.702682 6713.4624 1.6985355e+08 0.055283015 0.045358991 119.33166 21.587678 6715.7166 1.5908514e+08 0.053565940 0.048111508 119.37590 21.472670 6717.9708 1.5384947e+08 0.051606250 0.049814219 119.42214 21.357670 6720.2250 1.4446933e+08 0.050787637 0.050393693 119.47079 21.242680 6722.4792 1.3673261e+08 0.050690232 0.050012743 119.51944 21.126831 6724.7334 1.3291300e+08 0.047195022 0.043801901 119.56809 21.007417 6726.9877 1.2651244e+08 0.045122907 0.040960275 119.61674 20.888004 6729.2419 1.2238602e+08 0.044920652 0.040884214 119.66539 20.772717 6731.4961 1.1638402e+08 0.043333392 0.042737321 119.71404 20.657727 6733.7503 1.1182265e+08 0.042427229 0.047997872 119.75972 20.542736 6736.0045 1.0823349e+08 0.044206514 0.050372039 119.80395 20.427745 6738.2587 1.0516749e+08 0.045720614 0.058745447 119.84999 20.312754 6740.5129 99724995. 0.045473726 0.064926612 119.89864 20.197763 6742.7671 91137781. 0.042711609 0.070480033 119.94663 20.082772 6745.0214 89404747. 0.039377934 0.078575862 119.99085 19.967782 6747.2756 84786545. 0.035251539 0.067266295 120.03508 19.852791 6749.5298 81055299. 0.034464002 0.072132880 120.08324 19.737800 6751.7840 76596158. 0.031601260 0.074043145 120.13189 19.622809 6754.0382 68797217. 0.030813205 0.076152045 120.17776 19.507818 6756.2924 69144456. 0.028504944 0.074919321 120.22199 19.392827 6758.5466 71146071. 0.028712685 0.074861224 120.26622 19.277829 6760.8008 69748910. 0.029575450 0.077588421 120.31045 19.162821 6763.0550 66039161. 0.035430893 0.076605400 120.35535 19.046074 6765.3093 60063195. 0.038739843 0.079587649 120.40590 18.914654 6767.5635 56492682. 0.038167248 0.081344829 120.45620 18.785329 6769.8177 53879661. 0.034322102 0.086437490 120.50485 18.670339 6772.0719 49026244. 0.032250411 0.091904944 120.55350 18.555349 6774.3261 51225517. 0.029825557 0.097372398 120.59832 18.440359 6776.5803 49245490. 0.039682725 0.10283985 120.64255 18.325368 6778.8345 49013712. 0.023417603 0.10830731 120.69061 18.200429 6781.0887 45261161. -0.0061366131 0.11377476 120.74115 18.069007