# # 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 = 48.439931 km # Date (UTC) = 2016-01-18T10:36:49.763 # Date (julian) = 2457405.94224263 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6492.6223 9.3221702e+10 0.021678982 0.030058491 95.217582 40.553984 6494.7691 8.4223687e+10 0.028049550 0.030705860 95.299417 40.419196 6496.9160 7.6334240e+10 0.034350222 0.031353229 95.381251 40.284409 6499.0628 7.0080939e+10 0.040784530 0.032000598 95.463086 40.149622 6501.2096 6.3512636e+10 0.047388015 0.032647967 95.544920 40.014835 6503.3564 5.7325704e+10 0.054291581 0.033295335 95.626758 39.880046 6505.5033 5.1663307e+10 0.061596780 0.033942704 95.708596 39.745257 6507.6501 4.7004669e+10 0.069618158 0.034590073 95.782877 39.622913 6509.7969 4.3444460e+10 0.078693960 0.035237442 95.854481 39.504976 6511.9437 4.0450587e+10 0.088869836 0.035884811 95.928057 39.380901 6514.0906 3.7665942e+10 0.10009459 0.036532180 96.005077 39.246114 6516.2374 3.4819562e+10 0.11219379 0.037179549 96.082098 39.111327 6518.3842 3.1942613e+10 0.12512949 0.037826918 96.159121 38.976537 6520.5310 2.9264610e+10 0.13895179 0.038474287 96.236144 38.842757 6522.6779 2.6737532e+10 0.15162819 0.039094755 96.313164 38.712783 6524.8247 2.4422555e+10 0.16120085 0.039719931 96.390184 38.582173 6526.9715 2.2242629e+10 0.16915816 0.040686592 96.467207 38.447386 6529.1183 2.0307900e+10 0.17498952 0.042424265 96.544229 38.312600 6531.2651 1.8556544e+10 0.17963679 0.045614605 96.621236 38.177835 6533.4120 1.7006711e+10 0.18254240 0.047694663 96.698243 38.043071 6535.5588 1.5707841e+10 0.18192090 0.047981894 96.761748 37.924733 6537.7056 1.4566517e+10 0.18122428 0.049017893 96.824938 37.806777 6539.8524 1.3542658e+10 0.18005689 0.050675487 96.896476 37.678665 6541.9993 1.2531760e+10 0.17724444 0.051002476 96.973500 37.543877 6544.1461 1.1543115e+10 0.17470178 0.051762858 97.047990 37.409090 6546.2929 1.0634347e+10 0.17238233 0.052705546 97.120198 37.274303 6548.4397 9.8368334e+09 0.17055691 0.053798966 97.192405 37.139515 6550.5866 9.1001683e+09 0.16869126 0.055132229 97.264610 37.004726 6552.7334 8.4547269e+09 0.16689218 0.055402174 97.333463 36.876196 6554.8802 7.9316836e+09 0.16459724 0.054850851 97.396644 36.758260 6557.0270 7.4535777e+09 0.16188585 0.053849164 97.459861 36.640257 6559.1739 6.9946620e+09 0.15860130 0.052367558 97.532009 36.505583 6561.3207 6.5231748e+09 0.15537464 0.051214658 97.604218 36.370796 6563.4675 6.0240488e+09 0.15232381 0.049387576 97.671997 36.240436 6565.6143 5.5671285e+09 0.14941303 0.047620823 97.739391 36.110461 6567.7611 5.1956277e+09 0.14686102 0.045973617 97.803235 35.990630 6569.9080 4.8952431e+09 0.14426232 0.044911519 97.866416 35.872694 6572.0548 4.6459552e+09 0.14124189 0.044198776 97.931570 35.746863 6574.2016 4.3962719e+09 0.13750897 0.042758168 97.998964 35.612075 6576.3484 4.1106478e+09 0.13398306 0.040970329 98.066357 35.477286 6578.4953 3.8179709e+09 0.13031360 0.037867532 98.133751 35.342499 6580.6421 3.5566467e+09 0.12715271 0.035927370 98.199823 35.214319 6582.7889 3.3476622e+09 0.12483722 0.035079109 98.263004 35.100595 6584.9357 3.1760918e+09 0.12282474 0.034005780 98.326185 34.986870 6587.0826 3.0202705e+09 0.12077884 0.033176662 98.393324 34.853355 6589.2294 2.8378924e+09 0.11884504 0.032590901 98.460718 34.718567 6591.3762 2.6460468e+09 0.11654924 0.028777404 98.523960 34.583779 6593.5230 2.4723507e+09 0.11446996 0.026615961 98.586539 34.448990 6595.6699 2.3220457e+09 0.11189619 0.025693037 98.646283 34.327429 6597.8167 2.2092650e+09 0.10974595 0.025465015 98.705251 34.209493 6599.9635 2.1059396e+09 0.10873522 0.024987680 98.767680 34.086612 6602.1103 1.9959773e+09 0.10805624 0.027422486 98.835074 33.956637 6604.2571 1.8874594e+09 0.10657827 0.026223963 98.898255 33.830676 6606.4040 1.7894507e+09 0.10583425 0.026778038 98.953013 33.712740 6608.5508 1.7109282e+09 0.10295355 0.023717808 99.007772 33.594804 6610.6976 1.6374714e+09 0.099691164 0.024669538 99.070032 33.460703 6612.8444 1.5563557e+09 0.098122075 0.023689817 99.132611 33.325916 6614.9913 1.4639329e+09 0.096820845 0.023257549 99.199436 33.195373 6617.1381 1.3729988e+09 0.095344362 0.023485032 99.266829 33.065399 6619.2849 1.2965003e+09 0.094465783 0.024594659 99.324057 32.945109 6621.4317 1.2384273e+09 0.093218931 0.024946345 99.378815 32.827172 6623.5786 1.1862390e+09 0.091157237 0.024706173 99.436940 32.704054 6625.7254 1.1304018e+09 0.089672896 0.026263205 99.499519 32.574081 6627.8722 1.0730553e+09 0.087815561 0.025653731 99.559335 32.448358 6630.0190 1.0170513e+09 0.086640113 0.025928349 99.614090 32.330420 6632.1659 9.7727581e+08 0.085120752 0.026052233 99.668845 32.212482 6634.3127 9.3522796e+08 0.083972503 0.026349651 99.726549 32.078050 6636.4595 8.8540927e+08 0.082842269 0.026371309 99.784317 31.943263 6638.6063 8.3333643e+08 0.082141141 0.025645226 99.846422 31.812815 6640.7531 7.8196431e+08 0.082874611 0.025178503 99.909001 31.682840 6642.9000 7.4585280e+08 0.082781651 0.025188525 99.965134 31.562787 6645.0468 7.1250236e+08 0.081965770 0.025473607 100.01989 31.444851 6647.1936 6.8403852e+08 0.080886280 0.026539721 100.07600 31.321496 6649.3404 6.5134187e+08 0.079957992 0.027164403 100.13377 31.191523 6651.4873 6.1623966e+08 0.079695009 0.026857585 100.19153 31.059755 6653.6341 5.8145749e+08 0.079294169 0.027849405 100.24930 30.924967 6655.7809 5.4690290e+08 0.077816944 0.027932891 100.30618 30.796402 6657.9277 5.2291518e+08 0.076368574 0.029977257 100.36093 30.682677 6660.0746 4.9865540e+08 0.074979578 0.031693770 100.41569 30.568952 6662.2214 4.7332519e+08 0.073567972 0.032920062 100.47322 30.440257 6664.3682 4.4234378e+08 0.072587960 0.030858831 100.53099 30.310283 6666.5150 4.2202902e+08 0.072494171 0.027008955 100.58266 30.190468 6668.6619 4.0180636e+08 0.071427600 0.028056469 100.63320 30.072531 6670.8087 3.8757753e+08 0.071251600 0.026953984 100.68714 29.948939 6672.9555 3.7445499e+08 0.070843849 0.027433425 100.74490 29.818965 6675.1023 3.5178654e+08 0.069389869 0.029994348 100.80267 29.687102 6677.2491 3.3666887e+08 0.067546526 0.032004026 100.86044 29.552314 6679.3960 3.1599723e+08 0.067514178 0.029940557 100.91460 29.424163 6681.5428 3.0062410e+08 0.068693736 0.030073783 100.96093 29.310439 6683.6896 2.9521722e+08 0.069159737 0.032199226 101.00727 29.196715 6685.8364 2.8538169e+08 0.068861861 0.033588328 101.06436 29.067700 6687.9833 2.7726618e+08 0.066654487 0.033794523 101.12212 28.937725 6690.1301 2.6575218e+08 0.064871880 0.033100955 101.17573 28.803593 6692.2769 2.4932591e+08 0.064059656 0.032443765 101.22868 28.668805 6694.4237 2.3774100e+08 0.063398121 0.030667136 101.28542 28.537803 6696.5706 2.2734664e+08 0.063209639 0.029912842 101.34319 28.407830 6698.7174 2.2071976e+08 0.062132774 0.031202510 101.39285 28.289376 6700.8642 2.1430612e+08 0.060389747 0.031308726 101.43918 28.175651 6703.0110 2.0375884e+08 0.060087254 0.033702840 101.48934 28.056486 6705.1579 1.9239929e+08 0.060295367 0.036949241 101.54710 27.926512 6707.3047 1.8475432e+08 0.059950850 0.040143181 101.60363 27.796538 6709.4515 1.7729511e+08 0.059182955 0.040845366 101.65658 27.666563 6711.5983 1.6894372e+08 0.057285060 0.041372963 101.70834 27.538757 6713.7451 1.5946791e+08 0.055218492 0.046381669 101.75467 27.420821 6715.8920 1.5207343e+08 0.053478587 0.048290873 101.80101 27.302884 6718.0388 1.4748452e+08 0.051388305 0.049872836 101.85268 27.175246 6720.1856 1.4305306e+08 0.050375574 0.050398259 101.90563 27.045272 6722.3324 1.3673886e+08 0.050177657 0.050194217 101.95858 26.915298 6724.4793 1.3240407e+08 0.047136842 0.045924473 102.01153 26.785324 6726.6261 1.2824385e+08 0.044404770 0.040957014 102.06449 26.655350 6728.7729 1.2184102e+08 0.044086767 0.040723572 102.11744 26.525376 6730.9197 1.1879799e+08 0.042462342 0.041639976 102.17039 26.395402 6733.0666 1.1168938e+08 0.041368973 0.044285686 102.22334 26.265428 6735.2134 1.0819396e+08 0.041755774 0.049519956 102.27391 26.135454 6737.3602 1.0602245e+08 0.043405222 0.055283018 102.32204 26.005480 6739.5070 98618326. 0.043812368 0.063447062 102.36942 25.882319 6741.6539 95905137. 0.042137569 0.067623525 102.41576 25.768594 6743.8007 92478047. 0.037715725 0.076448798 102.46239 25.654136 6745.9475 87535711. 0.036383194 0.078965209 102.51534 25.524162 6748.0943 85824242. 0.032357484 0.067513152 102.56829 25.394188 6750.2411 80959416. 0.029710373 0.072415904 102.61659 25.264215 6752.3880 75488886. 0.027003660 0.073685519 102.66472 25.134242 6754.5348 75153075. 0.025692942 0.075353451 102.71715 25.004267 6756.6816 72304609. 0.023065492 0.075920818 102.77010 24.874292 6758.8284 70427910. 0.023650865 0.075457176 102.81914 24.744318 6760.9753 70166521. 0.024001570 0.077921061 102.86728 24.614344 6763.1221 64558674. 0.029189377 0.076809594 102.91542 24.484370 6765.2689 58827557. 0.031212923 0.079580284 102.96356 24.354396 6767.4157 55183452. 0.029648343 0.081510247 103.01487 24.224423 6769.5626 52896043. 0.024175735 0.085818720 103.06781 24.094450 6771.7094 52426108. 0.018378603 0.091025711 103.11797 23.964476 6773.8562 50856399. 0.0026241997 0.096232702 103.16611 23.834502 6776.0030 47852808. 0.0082106189 0.10143969 103.21425 23.706953 6778.1499 47623696. 0.026750457 0.10664668 103.26239 23.581793