# # 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 = 46.890268 km # Date (UTC) = 2014-01-22T09:40:51.221 # Date (julian) = 2456679.90337061 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.1037 6.3902160e+10 0.056442143 0.033219136 -21.958182 55.324751 6505.3230 5.9595667e+10 0.066022495 0.033888359 -22.138165 55.173798 6507.5423 5.4120871e+10 0.075568518 0.034557581 -22.315937 55.022856 6509.7616 4.8947640e+10 0.085296854 0.035226804 -22.490079 54.871931 6511.9809 4.5181476e+10 0.095616254 0.035896026 -22.647921 54.738399 6514.2002 4.2606530e+10 0.10661411 0.036565249 -22.797212 54.613990 6516.4195 4.0355926e+10 0.11806689 0.037234471 -22.958836 54.472423 6518.6388 3.7801771e+10 0.12971403 0.037903693 -23.127208 54.321470 6520.8581 3.4506486e+10 0.14129682 0.038572916 -23.295579 54.170515 6523.0774 3.1425618e+10 0.15016314 0.039198296 -23.459100 54.023910 6525.2967 2.8993445e+10 0.15630986 0.039748354 -23.603414 53.894526 6527.5160 2.7017569e+10 0.16146326 0.041091086 -23.751234 53.760997 6529.7353 2.5167670e+10 0.16587725 0.043407028 -23.913800 53.610042 6531.9546 2.3170397e+10 0.16953097 0.046618081 -24.065455 53.469220 6534.1739 2.1314625e+10 0.17120299 0.047993196 -24.204793 53.339835 6536.3932 1.9618290e+10 0.17181336 0.048142280 -24.352149 53.200523 6538.6125 1.8127719e+10 0.17299434 0.049454919 -24.508908 53.049569 6540.8318 1.6877828e+10 0.17290270 0.051247047 -24.649141 52.914530 6543.0511 1.5674542e+10 0.17182461 0.051395293 -24.783503 52.785145 6545.2703 1.4534495e+10 0.17035964 0.052457989 -24.929949 52.640051 6547.4896 1.3364275e+10 0.16845410 0.053473567 -25.080731 52.489270 6549.7089 1.2345921e+10 0.16659218 0.054688744 -25.210159 52.359841 6551.9282 1.1479021e+10 0.16484287 0.055561575 -25.339607 52.230393 6554.1475 1.0624368e+10 0.16244173 0.054835476 -25.490393 52.079608 6556.3668 9.7944526e+09 0.16043577 0.053959196 -25.635420 51.933219 6558.5861 9.0423255e+09 0.15830956 0.052739861 -25.764805 51.798857 6560.8054 8.4017114e+09 0.15569619 0.051548128 -25.898356 51.660111 6563.0247 7.8409278e+09 0.15351063 0.049899788 -26.043504 51.509156 6565.2440 7.2810495e+09 0.15139225 0.048041331 -26.174718 51.369889 6567.4633 6.7672933e+09 0.14964138 0.046225460 -26.294150 51.240505 6569.6826 6.3811093e+09 0.14805417 0.044896850 -26.416231 51.111120 6571.9019 6.0485189e+09 0.14643465 0.044256953 -26.540640 50.981734 6574.1212 5.7002184e+09 0.14407497 0.042796803 -26.672857 50.838036 6576.3405 5.3357171e+09 0.14199195 0.040979501 -26.812199 50.681278 6578.5598 4.9906582e+09 0.13939981 0.037765674 -26.935603 50.546430 6580.7791 4.6917099e+09 0.13681067 0.035800786 -27.055036 50.417044 6582.9984 4.4721995e+09 0.13454375 0.035022113 -27.170532 50.287660 6585.2177 4.2676413e+09 0.13191682 0.033796765 -27.284987 50.158275 6587.4369 4.0189273e+09 0.12946100 0.033255180 -27.414355 50.007498 6589.6562 3.7681568e+09 0.12674939 0.031744052 -27.546764 49.852355 6591.8755 3.5333278e+09 0.12358853 0.028213969 -27.661220 49.722969 6594.0948 3.3429083e+09 0.12068485 0.026120466 -27.775676 49.593336 6596.3141 3.1953105e+09 0.11771318 0.025725846 -27.890132 49.458976 6598.5334 3.0497903e+09 0.11585133 0.025152491 -28.004388 49.324816 6600.7527 2.9124053e+09 0.11564304 0.026537320 -28.113868 49.195430 6602.9720 2.7644363e+09 0.11483565 0.026687158 -28.223905 49.065384 6605.1913 2.5926780e+09 0.11426562 0.026825533 -28.351636 48.914431 6607.4106 2.4193782e+09 0.11293765 0.024896214 -28.472202 48.768599 6609.6299 2.2603630e+09 0.11009746 0.023893040 -28.576688 48.634260 6611.8492 2.1312626e+09 0.10764525 0.024416924 -28.682663 48.501398 6614.0685 2.0243047e+09 0.10661864 0.023893309 -28.792144 48.372012 6616.2878 1.9243410e+09 0.10504150 0.023327466 -28.900186 48.241189 6618.5071 1.8319623e+09 0.10426270 0.024153697 -29.004689 48.106827 6620.7264 1.7387525e+09 0.10333310 0.025001269 -29.114059 47.966209 6622.9457 1.6366700e+09 0.10180640 0.024506289 -29.235984 47.809451 6625.1650 1.5369776e+09 0.10025745 0.025594449 -29.345433 47.667938 6627.3843 1.4482979e+09 0.098088638 0.025465241 -29.444960 47.538552 6629.6035 1.3769250e+09 0.096619579 0.025999982 -29.544487 47.406442 6631.8228 1.3154229e+09 0.094488815 0.026014350 -29.644014 47.272081 6634.0421 1.2549194e+09 0.092595896 0.026329916 -29.746218 47.140397 6636.2614 1.2014712e+09 0.090666875 0.026448228 -29.850721 47.011013 6638.4807 1.1516860e+09 0.089091233 0.025650698 -29.949965 46.878998 6640.7000 1.1022894e+09 0.088941462 0.025185003 -30.044516 46.744635 6642.9193 1.0568026e+09 0.088332937 0.025189317 -30.141650 46.612855 6645.1386 1.0103835e+09 0.087203759 0.025516618 -30.241177 46.483469 6647.3579 9.5790683e+08 0.086169939 0.026626219 -30.346199 46.340139 6649.5772 9.0472165e+08 0.085414303 0.026838046 -30.456510 46.183381 6651.7965 8.5076678e+08 0.085166922 0.027094564 -30.554417 46.048167 6654.0158 8.0167520e+08 0.084691170 0.028029499 -30.648968 45.918781 6656.2351 7.6449631e+08 0.082969426 0.028229750 -30.743519 45.785526 6658.4544 7.2843345e+08 0.081527704 0.030866929 -30.838069 45.651164 6660.6737 6.9665468e+08 0.080137582 0.032238335 -30.932620 45.516803 6662.8930 6.6338013e+08 0.078928908 0.032543264 -31.027169 45.382441 6665.1123 6.2792721e+08 0.078360608 0.028363183 -31.117946 45.251854 6667.3316 5.9752364e+08 0.077884724 0.027225245 -31.207521 45.122469 6669.5509 5.6694721e+08 0.076980819 0.027789939 -31.300823 44.989357 6671.7701 5.4399492e+08 0.076813540 0.026876324 -31.395374 44.854995 6673.9894 5.2595317e+08 0.075898586 0.028939001 -31.486244 44.724314 6676.2087 5.0874149e+08 0.073429873 0.031848254 -31.575819 44.594930 6678.4280 4.8713270e+08 0.072366764 0.030650328 -31.672055 44.445561 6680.6473 4.6004542e+08 0.072932343 0.029581201 -31.770671 44.289008 6682.8666 4.3039946e+08 0.073599513 0.031086674 -31.860260 44.154611 6685.0859 4.0513796e+08 0.073389744 0.032795586 -31.949816 44.020268 6687.3052 3.8260986e+08 0.071408713 0.034172681 -32.034442 43.890853 6689.5245 3.6210755e+08 0.068842020 0.033543885 -32.119039 43.761466 6691.7438 3.4324828e+08 0.067803662 0.032825775 -32.203638 43.627163 6693.9631 3.3088612e+08 0.066770378 0.031273688 -32.288237 43.492803 6696.1824 3.1195582e+08 0.066796067 0.029751565 -32.372834 43.363313 6698.4017 2.9430613e+08 0.065969974 0.030769175 -32.457431 43.233927 6700.6210 2.8213747e+08 0.064254450 0.031128316 -32.542030 43.099717 6702.8403 2.7218122e+08 0.063570621 0.033547692 -32.626629 42.965355 6705.0596 2.6714749e+08 0.063674326 0.036774506 -32.724747 42.809518 6707.2789 2.5736929e+08 0.063235531 0.040146879 -32.818902 42.659282 6709.4982 2.4283690e+08 0.062411638 0.040815691 -32.898524 42.529896 6711.7175 2.2963041e+08 0.060338242 0.041508497 -32.979281 42.399377 6713.9367 2.1820529e+08 0.058018619 0.047074636 -33.063879 42.265016 6716.1560 2.0565858e+08 0.056128377 0.048631195 -33.147391 42.131741 6718.3753 1.9831129e+08 0.053644630 0.050396972 -33.227013 42.002357 6720.5946 1.9096930e+08 0.052960041 0.050350868 -33.306634 41.871933 6722.8139 1.8563376e+08 0.051966354 0.049598980 -33.386256 41.737571 6725.0332 1.7650673e+08 0.047417098 0.041555269 -33.464885 41.604202 6727.2525 1.6820060e+08 0.045574151 0.040623963 -33.539529 41.474816 6729.4718 1.6063022e+08 0.044531642 0.040730954 -33.617638 41.340232 6731.6911 1.5087306e+08 0.042333658 0.043125451 -33.710533 41.183472 6733.9104 1.4124030e+08 0.040776105 0.048867133 -33.794896 41.037184 6736.1297 1.3151010e+08 0.041988354 0.050845323 -33.869543 40.902823 6738.3490 1.2469524e+08 0.042674046 0.059242436 -33.946468 40.770741 6740.5683 1.2425186e+08 0.041678677 0.065021177 -34.026089 40.641355 6742.7876 1.2376262e+08 0.038186038 0.070529835 -34.103479 40.509737 6745.0069 1.1931004e+08 0.034271143 0.078569776 -34.178125 40.375376 6747.2262 1.1356877e+08 0.029358544 0.067283300 -34.258233 40.233731 6749.4455 1.0391557e+08 0.027824272 0.072155965 -34.345320 40.082778 6751.6648 98848491. 0.024120357 0.073992734 -34.419925 39.943715 6753.8841 95644482. 0.022107012 0.075838243 -34.489593 39.809353 6756.1033 90954843. 0.019162155 0.074432836 -34.562782 39.678509 6758.3226 86923392. 0.018410951 0.074387591 -34.637428 39.549122 6760.5419 83036345. 0.018472573 0.077094719 -34.712074 39.416266 6762.7612 79401064. 0.022785399 0.076822917 -34.786720 39.281907 6764.9805 77444198. 0.025022677 0.079530260 -34.865933 39.136128 6767.1998 73359459. 0.023744093 0.081752018 -34.947215 38.985173 6769.4191 69528094. 0.017796486 0.085470799 -35.017282 38.850243 6771.6384 69171077. 0.012871672 0.090853565 -35.086950 38.715881 6773.8577 66181188. 0.0068277435 0.096236330 -35.156619 38.586279 6776.0770 62839126. -0.00079292514 0.10161910 -35.226287 38.456895 6778.2963 58888291. -0.013152243 0.10700186 -35.306936 38.301622 6780.5156 56070392. -0.064726888 0.11238463 -35.385605 38.151018 6782.7349 53419328. -0.030114563 0.11776739 -35.455273 38.021632 6784.9542 50139628. 0.056902018 0.12315016 -35.526188 37.886374