# # 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 = 46.882476 km # Date (UTC) = 2015-01-01T09:34:00.045 # Date (julian) = 2457023.89861163 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.0719 8.0674567e+10 0.058995132 0.033209528 -23.853150 49.072742 6505.2246 7.2722880e+10 0.067842186 0.033858665 -23.950758 48.978887 6507.3773 6.6272742e+10 0.077012160 0.034507802 -24.055591 48.878233 6509.5299 5.9822477e+10 0.086350399 0.035156939 -24.161179 48.776867 6511.6826 5.3104752e+10 0.095758104 0.035806076 -24.260465 48.679533 6513.8353 4.7167692e+10 0.10540589 0.036455212 -24.354332 48.585666 6515.9880 4.2869320e+10 0.11563778 0.037104349 -24.448200 48.491799 6518.1407 3.9381671e+10 0.12638965 0.037753486 -24.542056 48.397943 6520.2934 3.6532918e+10 0.13769026 0.038402623 -24.635911 48.304088 6522.4461 3.3596113e+10 0.14803624 0.039034057 -24.732237 48.208652 6524.5987 3.0355123e+10 0.15399706 0.039639668 -24.837825 48.107288 6526.7514 2.7188388e+10 0.15862431 0.040455876 -24.943413 48.005924 6528.9041 2.4281177e+10 0.16207935 0.042159722 -25.035947 47.910890 6531.0568 2.1901833e+10 0.16533513 0.045311360 -25.126048 47.817035 6533.2095 1.9968740e+10 0.16919058 0.047608615 -25.216151 47.723178 6535.3622 1.8300596e+10 0.17059905 0.048067186 -25.306264 47.629311 6537.5149 1.6826432e+10 0.17189817 0.048927961 -25.396376 47.535444 6539.6675 1.5450096e+10 0.17262359 0.050451680 -25.492293 47.437708 6541.8202 1.4101070e+10 0.17150357 0.051060534 -25.593658 47.336343 6543.9729 1.2815806e+10 0.16976294 0.051637241 -25.692797 47.236090 6546.1256 1.1709756e+10 0.16782585 0.052567881 -25.779143 47.142236 6548.2783 1.0778705e+10 0.16645103 0.053750754 -25.865489 47.048381 6550.4310 1.0006714e+10 0.16494085 0.055093273 -25.953654 46.954527 6552.5837 9.3444437e+09 0.16347370 0.055439858 -26.043755 46.860672 6554.7364 8.7373833e+09 0.16165954 0.054847832 -26.133855 46.766817 6556.8890 8.1313054e+09 0.15974627 0.053882420 -26.229735 46.663331 6559.0417 7.5279837e+09 0.15733897 0.052382472 -26.326876 46.557743 6561.1944 6.9461617e+09 0.15506330 0.051276880 -26.417429 46.459167 6563.3471 6.4335230e+09 0.15306444 0.049526856 -26.500033 46.369054 6565.4998 6.0156073e+09 0.15115637 0.047750887 -26.582637 46.278940 6567.6525 5.6482714e+09 0.14970211 0.046065508 -26.668196 46.185872 6569.8052 5.3305128e+09 0.14835589 0.044904828 -26.754542 46.092018 6571.9578 5.0430749e+09 0.14682088 0.044241670 -26.840415 45.998163 6574.1105 4.7731831e+09 0.14447046 0.042801920 -26.923007 45.904308 6576.2632 4.5232983e+09 0.14232672 0.041068430 -27.005599 45.810454 6578.4159 4.2654086e+09 0.13979550 0.037992861 -27.091013 45.711173 6580.5686 4.0026567e+09 0.13725081 0.035995298 -27.179707 45.605585 6582.7213 3.7346617e+09 0.13504874 0.035097516 -27.267824 45.501108 6584.8740 3.4904273e+09 0.13266351 0.034039433 -27.350416 45.407253 6587.0266 3.2806699e+09 0.13003939 0.033164273 -27.433007 45.313399 6589.1793 3.1039586e+09 0.12736760 0.032690203 -27.513986 45.219538 6591.3320 2.9602335e+09 0.12440811 0.028827269 -27.592835 45.125671 6593.4847 2.8172369e+09 0.12204958 0.026651595 -27.671683 45.031804 6595.6374 2.6718030e+09 0.11958043 0.025689670 -27.761332 44.932182 6597.7901 2.5146224e+09 0.11779125 0.025473410 -27.854250 44.830818 6599.9428 2.3549202e+09 0.11719967 0.024986432 -27.940034 44.732458 6602.0954 2.2158750e+09 0.11687955 0.027435183 -28.015118 44.638603 6604.2481 2.0952496e+09 0.11564210 0.026218609 -28.090202 44.544749 6606.4008 1.9904854e+09 0.11511443 0.026783705 -28.168050 44.450894 6608.5535 1.9006284e+09 0.11243677 0.023717737 -28.246888 44.357039 6610.7062 1.8168141e+09 0.10933115 0.024677728 -28.326134 44.262332 6612.8589 1.7198573e+09 0.10796776 0.023679032 -28.410605 44.156744 6615.0116 1.6177967e+09 0.10679083 0.023251887 -28.495076 44.051156 6617.1642 1.5209043e+09 0.10540558 0.023493705 -28.575583 43.953830 6619.3169 1.4426482e+09 0.10453555 0.024602386 -28.654431 43.859963 6621.4696 1.3799619e+09 0.10326216 0.024933789 -28.733513 43.765609 6623.6223 1.3083160e+09 0.10127000 0.024722381 -28.817984 43.660020 6625.7750 1.2331463e+09 0.099838270 0.026322404 -28.902455 43.554432 6627.9277 1.1612099e+09 0.097823569 0.025675159 -28.978070 43.456751 6630.0804 1.0995115e+09 0.096116590 0.025928500 -29.049400 43.362896 6632.2331 1.0511377e+09 0.093927887 0.026060290 -29.120774 43.269086 6634.3857 1.0050505e+09 0.091947601 0.026354980 -29.195851 43.178979 6636.5384 9.6416061e+08 0.089920420 0.026340661 -29.270934 43.088878 6638.6911 9.2457512e+08 0.088454947 0.025641532 -29.347807 42.993410 6640.8438 8.7760324e+08 0.088820098 0.025167412 -29.428055 42.887821 6642.9965 8.3232551e+08 0.088579678 0.025192474 -29.508303 42.782233 6645.1492 7.8614296e+08 0.087756525 0.025521564 -29.579830 42.688117 6647.3019 7.4778073e+08 0.086718863 0.026596708 -29.651169 42.594250 6649.4545 7.1716285e+08 0.085731734 0.027007126 -29.725319 42.496685 6651.6072 6.8259719e+08 0.085339382 0.026949517 -29.805565 42.391097 6653.7599 6.4924325e+08 0.084771032 0.027913646 -29.885812 42.285509 6655.9126 6.1554875e+08 0.083084601 0.027987304 -29.957607 42.191042 6658.0653 5.8522388e+08 0.081598409 0.030176863 -30.028936 42.097188 6660.2180 5.5898922e+08 0.080048082 0.031824123 -30.102800 41.999999 6662.3707 5.2981096e+08 0.078548565 0.032836311 -30.183047 41.894410 6664.5233 5.0295063e+08 0.077422780 0.030291197 -30.263295 41.788822 6666.6760 4.7501435e+08 0.077115207 0.027040328 -30.331929 41.693986 6668.8287 4.5247320e+08 0.075730418 0.028204128 -30.399505 41.600132 6670.9814 4.3423298e+08 0.075453562 0.026873965 -30.469218 41.504376 6673.1341 4.1229672e+08 0.074770071 0.027659755 -30.545252 41.402997 6675.2868 3.9371192e+08 0.072709355 0.030347634 -30.621287 41.301618 6677.4395 3.6985231e+08 0.070655665 0.031733480 -30.689831 41.206901 6679.5921 3.4701305e+08 0.070168828 0.029778449 -30.757407 41.113046 6681.7448 3.3181199e+08 0.070587342 0.030228782 -30.826855 41.016590 6683.8975 3.1352607e+08 0.070471703 0.032503904 -30.902879 40.911002 6686.0502 3.0092217e+08 0.069546407 0.033790294 -30.978902 40.805414 6688.2029 2.8659802e+08 0.066760054 0.033832024 -31.044505 40.709846 6690.3556 2.7281695e+08 0.064867036 0.033075114 -31.108326 40.615991 6692.5083 2.6154618e+08 0.063726480 0.032175114 -31.174471 40.519903 6694.6609 2.4694423e+08 0.062811401 0.030334672 -31.250494 40.414315 6696.8136 2.3609431e+08 0.062156998 0.030013834 -31.326518 40.308727 6698.9663 2.2344444e+08 0.060643973 0.031544203 -31.399067 40.203138 6701.1190 2.1329805e+08 0.058555150 0.031584063 -31.470867 40.097550 6703.2717 2.0368650e+08 0.058058989 0.034355097 -31.539040 39.999003 6705.4244 1.9112740e+08 0.057793389 0.037423066 -31.602870 39.908890 6707.5771 1.8755367e+08 0.057125041 0.040104162 -31.666700 39.818777 6709.7298 1.8130578e+08 0.055850115 0.040668386 -31.736839 39.716413 6711.8824 1.7667446e+08 0.053483626 0.041696205 -31.808640 39.610824 6714.0351 1.7284199e+08 0.051054146 0.047306049 -31.880440 39.505235 6716.1878 1.6148265e+08 0.048924071 0.048677986 -31.952240 39.399647 6718.3405 1.5851125e+08 0.046509017 0.050342710 -32.024040 39.294059 6720.4932 1.5093958e+08 0.045673225 0.050362623 -32.095839 39.188471 6722.6459 1.4658193e+08 0.044918305 0.049806743 -32.167638 39.082883 6724.7986 1.4255440e+08 0.040973467 0.043258224 -32.231359 38.985374 6726.9512 1.3265341e+08 0.038487988 0.040959947 -32.291426 38.891519 6729.1039 1.2885907e+08 0.038037607 0.040976158 -32.351679 38.797478 6731.2566 1.2088463e+08 0.035968069 0.042260731 -32.419256 38.696114 6733.4093 1.1885522e+08 0.034924398 0.046146507 -32.486833 38.594749 6735.5620 1.1616461e+08 0.035943647 0.049890020 -32.554409 38.490609 6737.7147 1.1203465e+08 0.037543800 0.056412166 -32.621986 38.385021 6739.8674 1.0959368e+08 0.037879429 0.063888031 -32.689565 38.279428 6742.0200 1.0053489e+08 0.035690571 0.068659588 -32.757153 38.173824 6744.1727 93974052. 0.031155710 0.077927013 -32.824741 38.068220 6746.3254 87193463. 0.028996726 0.075203966 -32.892319 37.962631 6748.4781 81091653. 0.026393700 0.069532205 -32.959895 37.857043 6750.6308 81686528. 0.024228737 0.073081226 -33.027471 37.753796 6752.7835 75440616. 0.021507064 0.073227852 -33.095048 37.652431 6754.9362 71665494. 0.019995952 0.074708010 -33.161835 37.550277 6757.0888 68629778. 0.017496745 0.076470434 -33.225187 37.444688 6759.2415 66495073. 0.018556483 0.075878240 -33.288540 37.339099 6761.3942 66392896. 0.020206791 0.078000795 -33.355352 37.233511 6763.5469 62138586. 0.023923092 0.078103371 -33.422928 37.127923 6765.6996 58787190. 0.024703110 0.079658906 -33.488598 37.022335 6767.8523 56283240. 0.020309755 0.081021438 -33.551952 36.916746 6770.0050 54144010. 0.011880331 0.086891735 -33.615305 36.811512 6772.1576 50028170. -0.0016317931 0.092112946 -33.678657 36.710148 6774.3103 49620248. -0.054542183 0.097334156 -33.742009 36.608785 6776.4630 50246906. -0.018207959 0.10255537 -33.805363 36.504396 6778.6157 52686666. 0.060042379 0.10777658 -33.868716 36.398807