# # 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 = 47.602477 km # Date (UTC) = 2013-11-25T09:36:44.912 # Date (julian) = 2456621.90051982 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6477.3502 1.2115384e+11 0.075167272 0.025453212 -18.566322 59.151975 6479.7713 1.1033691e+11 0.078131144 0.026183287 -18.751757 59.042810 6482.1924 9.8402994e+10 0.081879505 0.026913362 -18.937012 58.933555 6484.6135 8.7131308e+10 0.085888122 0.027643437 -19.150209 58.815384 6487.0346 7.8160269e+10 0.089214829 0.028373512 -19.366121 58.696296 6489.4556 7.0646547e+10 0.091972629 0.029103587 -19.546627 58.587043 6491.8767 6.5297821e+10 0.093619639 0.029833662 -19.727132 58.477790 6494.2978 6.1009780e+10 0.094672443 0.030563737 -19.912074 58.368522 6496.7189 5.7035624e+10 0.095526303 0.031293812 -20.097357 58.259252 6499.1400 5.3287778e+10 0.096241069 0.032023887 -20.274791 58.149995 6501.5611 4.9815169e+10 0.096857831 0.032753962 -20.450547 58.040740 6503.9822 4.6225561e+10 0.097536865 0.033484037 -20.644350 57.920268 6506.4033 4.2691673e+10 0.098034593 0.034214112 -20.845218 57.795404 6508.8244 3.9435595e+10 0.097561854 0.034944187 -21.024071 57.684225 6511.2455 3.6700492e+10 0.095726906 0.035674262 -21.199826 57.574972 6513.6666 3.4221359e+10 0.094156165 0.036404337 -21.368252 57.462055 6516.0877 3.1907482e+10 0.097009865 0.037134412 -21.534508 57.348053 6518.5088 2.9722741e+10 0.11034099 0.037864487 -21.703928 57.237215 6520.9299 2.7604426e+10 0.13104075 0.038594562 -21.874933 57.127961 6523.3510 2.5698211e+10 0.14951214 0.039266104 -22.043274 57.018707 6525.7721 2.3890374e+10 0.16003229 0.039694099 -22.209528 56.909452 6528.1932 2.2075445e+10 0.16453905 0.041595732 -22.384136 56.790608 6530.6143 2.0218984e+10 0.16654200 0.044688669 -22.568717 56.660317 6533.0354 1.8409038e+10 0.16828071 0.047534618 -22.739134 56.542939 6535.4565 1.6807381e+10 0.16745954 0.048026284 -22.900639 56.433686 6537.8776 1.5471085e+10 0.16709604 0.049098956 -23.059728 56.322016 6540.2987 1.4332193e+10 0.16644211 0.050995195 -23.216483 56.208012 6542.7198 1.3277228e+10 0.16448903 0.051275496 -23.373238 56.094008 6545.1408 1.2320479e+10 0.16342259 0.052456829 -23.529992 55.980006 6547.5619 1.1438027e+10 0.16213551 0.053501061 -23.685337 55.865998 6549.9830 1.0627425e+10 0.16152432 0.054968075 -23.837364 55.751977 6552.4041 9.8897021e+09 0.16055648 0.055485046 -23.989387 55.638877 6554.8252 9.2287626e+09 0.15953945 0.054849697 -24.141393 55.529624 6557.2463 8.5915378e+09 0.15822465 0.053711709 -24.294834 55.418516 6559.6674 7.9150449e+09 0.15653034 0.052311848 -24.463128 55.288223 6562.0885 7.2755224e+09 0.15459951 0.050795675 -24.626244 55.161939 6564.5096 6.6768692e+09 0.15249861 0.048540640 -24.773498 55.047936 6566.9307 6.1785660e+09 0.15089548 0.046656385 -24.920753 54.933934 6569.3518 5.7706989e+09 0.14900307 0.044875322 -25.068007 54.819929 6571.7729 5.3954392e+09 0.14707568 0.044292181 -25.215091 54.705925 6574.1940 5.0600903e+09 0.14399353 0.042761829 -25.357597 54.591923 6576.6151 4.7571177e+09 0.14120224 0.040663409 -25.500102 54.477920 6579.0362 4.4739116e+09 0.13805277 0.037050603 -25.642606 54.363916 6581.4573 4.2063566e+09 0.13603741 0.035458137 -25.785109 54.249912 6583.8784 3.9572436e+09 0.13422381 0.034577070 -25.923694 54.135909 6586.2995 3.7223092e+09 0.13249059 0.033167425 -26.061448 54.021907 6588.7206 3.5080662e+09 0.13095097 0.033139294 -26.199202 53.907903 6591.1417 3.3100902e+09 0.12852758 0.029042055 -26.336956 53.793898 6593.5628 3.1176765e+09 0.12634057 0.026579022 -26.471789 53.676973 6595.9839 2.9329239e+09 0.12341790 0.025725600 -26.604794 53.558220 6598.4050 2.7624506e+09 0.12134800 0.025213826 -26.737808 53.441879 6600.8261 2.6088589e+09 0.12075746 0.026688081 -26.870833 53.327857 6603.2471 2.4538285e+09 0.11944135 0.026516964 -27.011543 53.207248 6605.6682 2.2945479e+09 0.11850738 0.027225645 -27.163550 53.076957 6608.0893 2.1359999e+09 0.11598479 0.023730010 -27.302187 52.955833 6610.5104 1.9908705e+09 0.11224920 0.024490686 -27.430441 52.841829 6612.9315 1.8698709e+09 0.11009192 0.023624749 -27.558695 52.725651 6615.3526 1.7632184e+09 0.10798772 0.023262381 -27.686950 52.606897 6617.7737 1.6640283e+09 0.10617140 0.023695774 -27.815204 52.489818 6620.1948 1.5689351e+09 0.10461611 0.024829977 -27.943458 52.375816 6622.6159 1.4776947e+09 0.10226270 0.024594057 -28.070537 52.260639 6625.0370 1.3958922e+09 0.099665591 0.025441766 -28.194041 52.141885 6627.4581 1.3250649e+09 0.096614014 0.025493769 -28.317544 52.023806 6629.8792 1.2584185e+09 0.094681594 0.025950143 -28.441048 51.909801 6632.3003 1.1917271e+09 0.092634531 0.026068353 -28.564376 51.795622 6634.7214 1.1290794e+09 0.091245983 0.026379464 -28.683130 51.676869 6637.1425 1.0721310e+09 0.089840617 0.026091626 -28.801883 51.558115 6639.5636 1.0259947e+09 0.089262119 0.025426638 -28.920638 51.443788 6641.9847 9.7818212e+08 0.089653702 0.025151644 -29.039392 51.329785 6644.4058 9.2170773e+08 0.088664784 0.025387461 -29.172169 51.197832 6646.8269 8.6223267e+08 0.087599532 0.026348162 -29.307890 51.062111 6649.2480 8.0546279e+08 0.086475024 0.027291880 -29.426907 50.947769 6651.6691 7.5810100e+08 0.086040756 0.026996904 -29.545661 50.833765 6654.0902 7.1900542e+08 0.085184943 0.027997818 -29.660252 50.715569 6656.5113 6.8314767e+08 0.083029864 0.028472141 -29.774273 50.596798 6658.9323 6.4952903e+08 0.081053782 0.031714617 -29.888281 50.481720 6661.3534 6.1673181e+08 0.079357623 0.032714966 -30.002285 50.367717 6663.7745 5.8656978e+08 0.077573222 0.032268569 -30.116289 50.250535 6666.1956 5.5708300e+08 0.077163344 0.026946717 -30.230293 50.131781 6668.6167 5.2602003e+08 0.075736408 0.028016537 -30.350421 50.003458 6671.0378 4.9657614e+08 0.075232898 0.026865887 -30.475284 49.867737 6673.4589 4.6535713e+08 0.074304080 0.028145570 -30.588877 49.747694 6675.8800 4.4110788e+08 0.071566530 0.031483915 -30.698130 49.633690 6678.3011 4.2096375e+08 0.069838954 0.030735216 -30.807383 49.516757 6680.7222 3.9964768e+08 0.069917725 0.029597372 -30.916636 49.398003 6683.1433 3.8223633e+08 0.070141951 0.031398597 -31.023460 49.279250 6685.5644 3.6354375e+08 0.069446944 0.033300984 -31.127964 49.160496 6687.9855 3.4866213e+08 0.066783269 0.033793279 -31.238535 49.037053 6690.4066 3.3142154e+08 0.064545140 0.033069268 -31.357970 48.906759 6692.8277 3.1352570e+08 0.063321078 0.031804184 -31.468978 48.782978 6695.2488 2.9751107e+08 0.062400955 0.029813775 -31.573480 48.664225 6697.6699 2.8085045e+08 0.061331893 0.030176040 -31.677984 48.545471 6700.0910 2.6798529e+08 0.059235526 0.030735198 -31.782487 48.426717 6702.5121 2.5405330e+08 0.057421680 0.033285621 -31.890355 48.301958 6704.9332 2.3907909e+08 0.057220355 0.036635788 -32.004361 48.166237 6707.3543 2.2806720e+08 0.056279269 0.040136078 -32.111070 48.041634 6709.7754 2.1712951e+08 0.054696223 0.040639377 -32.210823 47.927631 6712.1965 2.0688576e+08 0.051761420 0.042194709 -32.310576 47.811696 6714.6176 1.9871179e+08 0.048894566 0.047349836 -32.410329 47.692942 6717.0386 1.8706790e+08 0.045962453 0.049871878 -32.512742 47.569072 6719.4597 1.8031149e+08 0.043268089 0.050933051 -32.621320 47.433351 6721.8808 1.7220855e+08 0.042847770 0.050569300 -32.725849 47.305419 6724.3019 1.6316115e+08 0.039320675 0.047405326 -32.825616 47.186648 6726.7230 1.5598424e+08 0.035332021 0.040957888 -32.928508 47.061865 6729.1441 1.4434128e+08 0.033925125 0.040949365 -33.037085 46.926144 6731.5652 1.3938261e+08 0.031503070 0.042874918 -33.138704 46.801556 6733.9863 1.3482112e+08 0.029924011 0.049279305 -33.233708 46.687551 6736.4074 1.2812185e+08 0.031494909 0.051895250 -33.332030 46.564697 6738.8285 1.2406790e+08 0.032552961 0.061882406 -33.435177 46.428976 6741.2496 1.1620922e+08 0.030948132 0.066470574 -33.533719 46.302849 6743.6707 1.0688952e+08 0.025904542 0.075571957 -33.628723 46.184096 6746.0918 1.0097735e+08 0.023819853 0.077920061 -33.727474 46.057533 6748.5129 95613041. 0.020265101 0.069715234 -33.830622 45.921812 6750.9340 94039426. 0.018116278 0.073598950 -33.925798 45.796581 6753.3551 92780938. 0.015911698 0.074126400 -34.016051 45.677827 6755.7762 86650371. 0.013575472 0.074265041 -34.112921 45.550368 6758.1973 81259627. 0.012909239 0.074122484 -34.216069 45.414646 6760.6184 76494161. 0.013579905 0.077240473 -34.307376 45.293499 6763.0395 73431547. 0.018998355 0.076557955 -34.392879 45.179496 6765.4606 69772643. 0.021318893 0.079615270 -34.488365 45.053205 6767.8817 65615712. 0.018311463 0.080988539 -34.591513 44.917483 6770.3028 62444057. 0.011757918 0.087614008 -34.690731 44.781762 6772.7238 60582699. 0.0049287821 0.093486229 -34.788451 44.646041 6775.1449 59333759. -0.0040952843 0.099358451 -34.875397 44.525282 6777.5660 52979367. -0.022440513 0.10523067 -34.960900 44.406529 6779.9871 52064494. -0.097208590 0.11110289 -35.055891 44.274597 6782.4082 51647760. -0.043183274 0.11697512 -35.153611 44.138875 6784.8293 53457950. 0.076304856 0.12284734 -35.246257 44.003154