# # 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 = 37.593198 km # Date (UTC) = 2010-11-23T09:27:31.129 # Date (julian) = 2455523.89411029 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6575.2263 2.5524935e+11 0.12528765 0.042147687 -27.274929 52.045072 6577.0649 1.6319201e+11 0.12312234 0.040118464 -27.382120 51.937881 6578.9035 1.1126363e+11 0.12044103 0.037222905 -27.489311 51.832587 6580.7421 7.9065845e+10 0.11835952 0.035834952 -27.596502 51.729519 6582.5807 5.8587239e+10 0.11651777 0.035135770 -27.703107 51.626770 6584.4193 4.5151764e+10 0.11433193 0.034287098 -27.793290 51.532979 6586.2579 3.6430448e+10 0.11208809 0.033167962 -27.883473 51.439188 6588.0965 3.0386489e+10 0.11035032 0.033347697 -27.977036 51.342963 6589.9351 2.5533280e+10 0.10812272 0.031190765 -28.080104 51.239895 6591.7737 2.1407734e+10 0.10548849 0.028328838 -28.183173 51.136827 6593.6123 1.7785063e+10 0.10323682 0.026532926 -28.286241 51.030310 6595.4510 1.4655969e+10 0.10088304 0.025670336 -28.389309 50.923120 6597.2896 1.1959567e+10 0.098846393 0.025631353 -28.487080 50.822922 6599.1282 9.6950071e+09 0.097299081 0.024937439 -28.577263 50.732739 6600.9668 7.7456717e+09 0.097365123 0.026977384 -28.667446 50.642556 6602.8054 5.9798310e+09 0.096683174 0.026829353 -28.763228 50.541504 6604.6440 4.3886181e+09 0.096120720 0.026453656 -28.862173 50.434312 6606.4826 3.0860650e+09 0.096044862 0.026636753 -28.961119 50.328000 6608.3212 2.1864311e+09 0.094800632 0.023723879 -29.060064 50.224932 6610.1598 1.6772201e+09 0.093307246 0.024155675 -29.159010 50.121863 6611.9984 1.4475325e+09 0.091941456 0.024321760 -29.245368 50.026105 6613.8370 1.3709679e+09 0.091381270 0.023880697 -29.328336 49.932316 6615.6756 1.3283872e+09 0.090203122 0.023272319 -29.411500 49.838373 6617.5142 1.2769781e+09 0.089559944 0.023609744 -29.506312 49.735312 6619.3528 1.2132438e+09 0.089099437 0.024611051 -29.601135 49.632244 6621.1915 1.1451174e+09 0.088507020 0.025025988 -29.688970 49.534643 6623.0301 1.0842995e+09 0.087404502 0.024502964 -29.771951 49.440840 6624.8687 1.0326478e+09 0.086247463 0.025327304 -29.854932 49.347036 6626.7073 9.8606152e+08 0.084627772 0.025689766 -29.947604 49.242275 6628.5459 9.3713185e+08 0.083634587 0.025924730 -30.042427 49.135083 6630.3845 8.8283973e+08 0.082457600 0.025929249 -30.135624 49.029518 6632.2231 8.2530510e+08 0.081191474 0.026059097 -30.226308 48.926468 6634.0617 7.7087053e+08 0.080004262 0.026331344 -30.316992 48.823417 6635.9003 7.2510180e+08 0.078813345 0.026534803 -30.396741 48.729307 6637.7389 6.9043969e+08 0.077896934 0.025799510 -30.476114 48.635503 6639.5775 6.5518641e+08 0.077427671 0.025421653 -30.557697 48.539088 6641.4161 6.1532955e+08 0.077808319 0.025149713 -30.648397 48.431895 6643.2547 5.8275163e+08 0.077257659 0.025231082 -30.739098 48.324703 6645.0934 5.5383927e+08 0.076390036 0.025495416 -30.818295 48.230600 6646.9320 5.3428946e+08 0.075199282 0.026402560 -30.894049 48.140417 6648.7706 5.1865702e+08 0.074050749 0.027480104 -30.969824 48.050209 6650.6092 4.9582014e+08 0.073745862 0.026394694 -31.060463 47.943088 6652.4478 4.7612268e+08 0.073466595 0.027373724 -31.151164 47.835898 6654.2864 4.5059904e+08 0.072955869 0.027914221 -31.239506 47.728707 6656.1250 4.2799532e+08 0.071623290 0.028133126 -31.326083 47.621515 6657.9636 4.0784363e+08 0.070672101 0.030018860 -31.410550 47.516283 6659.8022 3.9098045e+08 0.069585183 0.031667256 -31.482697 47.422494 6661.6408 3.7839746e+08 0.068443746 0.032861332 -31.554843 47.328704 6663.4794 3.6167107e+08 0.067530390 0.032350352 -31.632388 47.231444 6665.3180 3.4584075e+08 0.067448178 0.028026023 -31.718965 47.128375 6667.1566 3.2453578e+08 0.067207753 0.027160994 -31.805543 47.025306 6668.9952 3.0625216e+08 0.066196163 0.028351497 -31.878432 46.931037 6670.8339 2.9410789e+08 0.066442807 0.026942321 -31.950577 46.837247 6672.6725 2.8179732e+08 0.066212906 0.027269371 -32.024541 46.741092 6674.5111 2.7372287e+08 0.065154887 0.029385912 -32.106996 46.633902 6676.3497 2.5898087e+08 0.063226780 0.031939089 -32.189451 46.526712 6678.1883 2.4012056e+08 0.062585435 0.030810681 -32.271906 46.419522 6680.0269 2.2767248e+08 0.062868223 0.029447223 -32.354361 46.312332 6681.8655 2.1384419e+08 0.063504521 0.030321356 -32.432290 46.210672 6683.7041 2.0339914e+08 0.063761102 0.032220457 -32.500828 46.120490 6685.5427 1.9646178e+08 0.063411358 0.033278077 -32.569367 46.030307 6687.3813 1.8644190e+08 0.061606121 0.034130233 -32.643322 45.930717 6689.2199 1.7599159e+08 0.059276750 0.033818053 -32.721656 45.823524 6691.0585 1.6457150e+08 0.058527715 0.032987452 -32.799989 45.716332 6692.8971 1.5165327e+08 0.057896076 0.031723530 -32.878320 45.609142 6694.7358 1.4355767e+08 0.057379893 0.030229833 -32.956651 45.501951 6696.5744 1.3889853e+08 0.057166067 0.029914420 -33.028109 45.404167 6698.4130 1.3687947e+08 0.056410457 0.030784660 -33.096647 45.310376 6700.2516 1.3303478e+08 0.055128119 0.030854317 -33.165186 45.216585 6702.0902 1.2707953e+08 0.053881511 0.032948739 -33.242831 45.110336 6703.9288 1.1689663e+08 0.054269342 0.035999358 -33.321163 45.003145 6705.7674 1.1030191e+08 0.054403663 0.038032880 -33.397417 44.898033 6707.6060 1.0539569e+08 0.054193791 0.040100017 -33.471626 44.794965 6709.4446 1.0132795e+08 0.053526584 0.040849750 -33.545106 44.692626 6711.2832 95104031. 0.051987538 0.041014456 -33.610038 44.598835 6713.1218 86879503. 0.050318498 0.044127238 -33.674970 44.505044 6714.9604 84486863. 0.048734942 0.047375614 -33.742746 44.407146 6716.7990 82505785. 0.047103865 0.049578272 -33.816955 44.299955 6718.6376 79597978. 0.045229378 0.050805501 -33.891164 44.192765 6720.4763 75668192. 0.045134886 0.050364584 -33.965374 44.085573 6722.3149 71803773. 0.044832717 0.050215953 -34.039583 43.978382 6724.1535 67523384. 0.042607565 0.048645096 -34.113791 43.871191 6725.9921 62050346. 0.039103322 0.040956317 -34.187999 43.764000 6727.8307 57349359. 0.038121695 0.039853677 -34.261823 43.657316 6729.6693 54025479. 0.036826584 0.040599328 -34.323148 43.567133 6731.5079 55378999. 0.035177388 0.042760837 -34.384473 43.476951 6733.3465 55154622. 0.033780948 0.045805589 -34.448055 43.382386 6735.1851 53402263. 0.033209524 0.049489944 -34.518141 43.275195 6737.0237 51981375. 0.032838424 0.054211128 -34.588227 43.168005 6738.8623 49110203. 0.028941368 0.062068605 -34.658314 43.060813 6740.7009 49325367. 0.0054802621 0.065247790 -34.728402 42.953621 6742.5395 49648417. 0.020371689 0.069925449 -34.798488 42.846430 6744.3782 50599495. 0.055061920 0.078085902 -34.868574 42.739240