# # 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 = 43.364535 km # Date (UTC) = 2016-01-08T10:32:54.881 # Date (julian) = 2457395.93952408 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6493.9244 1.0972409e+11 0.028226139 0.030451120 -37.289341 50.521696 6496.1407 9.8375440e+10 0.035049241 0.031119447 -37.406765 50.417319 6498.3570 9.5081478e+10 0.041905357 0.031787774 -37.524179 50.310573 6500.5733 8.7395121e+10 0.048960243 0.032456101 -37.641586 50.201863 6502.7897 7.3442968e+10 0.055728673 0.033124428 -37.754817 50.096137 6505.0060 6.2775490e+10 0.062545973 0.033792754 -37.855312 49.999507 6507.2223 5.8576193e+10 0.070608626 0.034461081 -37.955807 49.902878 6509.4386 5.5380482e+10 0.079707561 0.035129408 -38.064591 49.798278 6511.6550 5.1997560e+10 0.089678717 0.035797735 -38.177648 49.689569 6513.8713 4.7480450e+10 0.10021895 0.036466062 -38.289140 49.580859 6516.0876 4.2487235e+10 0.11135448 0.037134389 -38.397850 49.472149 6518.3039 3.8192969e+10 0.12348012 0.037802716 -38.506822 49.363439 6520.5203 3.4297860e+10 0.13644961 0.038471043 -38.619879 49.254730 6522.7366 3.0763152e+10 0.14813288 0.039110138 -38.732937 49.146020 6524.9529 2.7872911e+10 0.15714483 0.039765490 -38.833508 49.046490 6527.1692 2.5633089e+10 0.16463029 0.040839345 -38.930150 48.949847 6529.3856 2.3861135e+10 0.17098987 0.042849967 -39.028133 48.851108 6531.6019 2.1997813e+10 0.17642176 0.046104748 -39.132496 48.742399 6533.8182 1.9927468e+10 0.17924934 0.047867307 -39.236858 48.633689 6536.0345 1.7830633e+10 0.17863235 0.047821412 -39.345020 48.524979 6538.2509 1.6019484e+10 0.17880542 0.049278842 -39.453730 48.416269 6540.4672 1.4517216e+10 0.17724575 0.051074818 -39.553281 48.314498 6542.6835 1.3300372e+10 0.17464193 0.051261741 -39.646046 48.217869 6544.8998 1.2297729e+10 0.17273280 0.052374321 -39.738811 48.121239 6547.1162 1.1366465e+10 0.17042728 0.053331543 -39.838730 48.012685 6549.3325 1.0434686e+10 0.16807700 0.054305121 -39.938743 47.903975 6551.5488 9.4536852e+09 0.16636222 0.055428396 -40.041745 47.792277 6553.7651 8.5604627e+09 0.16422281 0.054950437 -40.146105 47.679219 6555.9815 7.7638799e+09 0.16188516 0.054028693 -40.244470 47.572532 6558.1978 7.1347349e+09 0.15994288 0.053070757 -40.333369 47.475903 6560.4141 6.6646024e+09 0.15706667 0.051900924 -40.422268 47.379273 6562.6304 6.1922745e+09 0.15416646 0.050280009 -40.520076 47.272960 6564.8468 5.7568966e+09 0.15136532 0.048387840 -40.620104 47.164234 6567.0631 5.3278739e+09 0.14879164 0.046563837 -40.717945 47.055516 6569.2794 4.9183381e+09 0.14628717 0.044870611 -40.813610 46.946806 6571.4957 4.5652530e+09 0.14410131 0.044367877 -40.907912 46.840531 6573.7121 4.2574214e+09 0.14107609 0.043086060 -40.996811 46.743901 6575.9284 3.9890192e+09 0.13781943 0.041443233 -41.085709 46.647272 6578.1447 3.7632237e+09 0.13423205 0.038421081 -41.178765 46.543222 6580.3610 3.5316246e+09 0.13037150 0.036187093 -41.274430 46.434512 6582.5774 3.2946870e+09 0.12693399 0.035136675 -41.368726 46.324434 6584.7937 3.0532891e+09 0.12395163 0.034083154 -41.460042 46.211375 6587.0100 2.8267737e+09 0.12149856 0.033160590 -41.551258 46.098576 6589.2263 2.6463107e+09 0.11941159 0.032596924 -41.636299 46.001932 6591.4427 2.4945857e+09 0.11696479 0.028702405 -41.721333 45.905302 6593.6590 2.3658671e+09 0.11463875 0.026489553 -41.809060 45.803499 6595.8753 2.2318476e+09 0.11183276 0.025714345 -41.900389 45.694773 6598.0916 2.0945667e+09 0.10986416 0.025363409 -41.991717 45.586050 6600.3080 1.9530338e+09 0.10922708 0.025623010 -42.083032 45.477340 6602.5243 1.8171509e+09 0.10849199 0.027069218 -42.174348 45.368630 6604.7406 1.7022748e+09 0.10737684 0.026511034 -42.257257 45.266728 6606.9569 1.5996572e+09 0.10616034 0.025784358 -42.338427 45.166234 6609.1733 1.5164008e+09 0.10278356 0.023757402 -42.422046 45.063757 6611.3896 1.4326996e+09 0.099723780 0.024710007 -42.513361 44.955047 6613.6059 1.3406988e+09 0.098505674 0.023795905 -42.604677 44.846337 6615.8222 1.2533131e+09 0.096770683 0.023276830 -42.691899 44.737628 6618.0386 1.1623081e+09 0.095932012 0.023799923 -42.778867 44.628918 6620.2549 1.0832810e+09 0.094964498 0.024849338 -42.859630 44.527964 6622.4712 1.0231718e+09 0.093223140 0.024632569 -42.936932 44.431335 6624.6875 9.7711135e+08 0.091100332 0.025230351 -43.014765 44.333804 6626.9039 9.3523757e+08 0.088607063 0.025439285 -43.101746 44.220730 6629.1202 8.8966110e+08 0.086940323 0.026087373 -43.188727 44.107656 6631.3365 8.3519985e+08 0.084840887 0.025964950 -43.275698 43.997879 6633.5528 7.8362868e+08 0.083245484 0.026248775 -43.362666 43.889169 6635.7692 7.3807742e+08 0.081756503 0.026515137 -43.447652 43.780459 6637.9855 6.9399307e+08 0.080973848 0.025678745 -43.530270 43.671750 6640.2018 6.5658296e+08 0.081247517 0.025245959 -43.611457 43.564925 6642.4181 6.2302407e+08 0.081505640 0.025168808 -43.684896 43.468295 6644.6345 5.9135030e+08 0.080783863 0.025412179 -43.758336 43.371666 6646.8508 5.6674937e+08 0.079838071 0.026360548 -43.836997 43.265691 6649.0671 5.4111920e+08 0.078817200 0.027541161 -43.919616 43.152632 6651.2834 5.1567089e+08 0.078654579 0.026701388 -44.002234 43.040743 6653.4998 4.9107315e+08 0.078302755 0.027780828 -44.084853 42.932034 6655.7161 4.6451785e+08 0.076856336 0.027906109 -44.167472 42.823324 6657.9324 4.3719532e+08 0.075491529 0.029982693 -44.250092 42.714614 6660.1487 4.1290797e+08 0.074148296 0.031761203 -44.332712 42.605905 6662.3651 3.9034823e+08 0.072790269 0.032839444 -44.406601 42.505277 6664.5814 3.7256576e+08 0.071825928 0.030078775 -44.476184 42.408634 6666.7977 3.5949836e+08 0.071521863 0.027064042 -44.546847 42.310632 6669.0140 3.4098796e+08 0.070230609 0.028341274 -44.629466 42.197574 6671.2304 3.2584315e+08 0.070246765 0.026868631 -44.712084 42.084517 6673.4467 3.0694372e+08 0.069618999 0.028127288 -44.791298 41.974865 6675.6630 2.8847856e+08 0.067487287 0.031068291 -44.869569 41.866155 6677.8793 2.7589233e+08 0.065933226 0.031108132 -44.945738 41.757445 6680.0957 2.5885187e+08 0.065927853 0.029462076 -45.019662 41.648736 6682.3120 2.4781161e+08 0.066413011 0.030662922 -45.094384 41.539227 6684.5283 2.3221386e+08 0.066366122 0.032680902 -45.172653 41.426168 6686.7446 2.1529816e+08 0.064988617 0.034194333 -45.250922 41.313109 6688.9610 2.0030098e+08 0.062006594 0.034007016 -45.329194 41.203895 6691.1773 1.8761954e+08 0.060916450 0.032959432 -45.407465 41.095184 6693.3936 1.8095689e+08 0.059768482 0.031469051 -45.483196 40.986475 6695.6099 1.6914712e+08 0.059123177 0.029747433 -45.557119 40.877765 6697.8263 1.6041434e+08 0.058073921 0.030195832 -45.628706 40.772490 6700.0426 1.4956202e+08 0.056116378 0.030699315 -45.694422 40.675848 6702.2589 1.4393436e+08 0.054228047 0.033083482 -45.760138 40.579206 6704.4752 1.4196875e+08 0.054204879 0.036410926 -45.831581 40.474144 6706.6916 1.3917220e+08 0.053622887 0.039650035 -45.905504 40.365434 6708.9079 1.3349742e+08 0.052641067 0.041032248 -45.979427 40.254994 6711.1242 1.3031180e+08 0.050524400 0.040833565 -46.053350 40.141936 6713.3405 1.2422274e+08 0.047967459 0.044918317 -46.126844 40.029306 6715.5569 1.1852102e+08 0.045575557 0.047948143 -46.196418 39.920596 6717.7732 1.1472037e+08 0.043100844 0.049826442 -46.265992 39.811886 6719.9895 1.0582167e+08 0.041146904 0.050429719 -46.339040 39.703177 6722.2058 1.0205186e+08 0.040701426 0.050350721 -46.412963 39.594467 6724.4222 96375533. 0.037165507 0.046401237 -46.484716 39.485758 6726.6385 91304450. 0.033659609 0.040957126 -46.554291 39.377048 6728.8548 87430153. 0.032764799 0.040839666 -46.625846 39.265243 6731.0711 81508712. 0.030212728 0.041891625 -46.705360 39.141001 6733.2875 77438050. 0.028357738 0.045485087 -46.783016 39.018851 6735.5038 74065987. 0.028386179 0.049828252 -46.852590 38.905791 6737.7201 71068116. 0.028978496 0.056429539 -46.922165 38.792732 6739.9364 65233415. 0.026932916 0.063972587 -46.991739 38.683532 6742.1528 63388452. 0.022423634 0.068983014 -47.061313 38.574822 6744.3691 61494693. 0.014015831 0.078078901 -47.130887 38.466113 6746.5854 57355777. 0.00057940105 0.072181067 -47.200461 38.357403 6748.8017 56972287. -0.055735208 0.071234930 -47.268786 38.248689 6751.0181 51453436. -0.016436007 0.073719313 -47.334022 38.139963 6753.2344 50523564. 0.092564320 0.073735849 -47.399258 38.031237