# # 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 = 47.790007 km # Date (UTC) = 2016-01-17T09:49:30.358 # Date (julian) = 2457404.90937914 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6502.7461 6.4623454e+10 0.057378864 0.033111281 107.64491 39.198080 6504.9729 5.8475107e+10 0.067300937 0.033782789 107.71571 39.074998 6507.1998 5.3876734e+10 0.077713595 0.034454296 107.78562 38.952664 6509.4267 4.9881854e+10 0.088518632 0.035125804 107.86528 38.818947 6511.6536 4.5951548e+10 0.099590071 0.035797311 107.95017 38.679134 6513.8804 4.1600864e+10 0.11074875 0.036468819 108.03182 38.539320 6516.1073 3.7437638e+10 0.12212003 0.037140327 108.11171 38.399505 6518.3342 3.3872355e+10 0.13386695 0.037811834 108.18515 38.270981 6520.5611 3.1029292e+10 0.14609557 0.038483342 108.25506 38.148647 6522.7879 2.8637948e+10 0.15654159 0.039123580 108.32675 38.020071 6525.0148 2.6324456e+10 0.16378029 0.039780525 108.40165 37.880258 6527.2417 2.3860082e+10 0.16874011 0.040891930 108.47832 37.740444 6529.4685 2.1411101e+10 0.17270185 0.042982142 108.55821 37.600629 6531.6954 1.9282109e+10 0.17638408 0.046240874 108.63306 37.466964 6533.9223 1.7599339e+10 0.17847522 0.047911535 108.69859 37.344630 6536.1492 1.6227202e+10 0.17860734 0.047923966 108.76503 37.221196 6538.3760 1.4947237e+10 0.17961010 0.049339793 108.84492 37.081383 6540.6029 1.3654890e+10 0.17863223 0.051138934 108.92451 36.941871 6542.8298 1.2348696e+10 0.17611996 0.051317271 108.99942 36.807050 6545.0567 1.1220956e+10 0.17375218 0.052456074 109.07378 36.672949 6547.2835 1.0275353e+10 0.17081315 0.053395187 109.13931 36.550615 6549.5104 9.4860702e+09 0.16825974 0.054486423 109.20485 36.428281 6551.7373 8.7858224e+09 0.16617474 0.055494547 109.27759 36.292507 6553.9642 8.1307583e+09 0.16345698 0.054850401 109.35249 36.152692 6556.1910 7.5737770e+09 0.16094796 0.053985042 109.41687 36.026271 6558.4179 7.1026088e+09 0.15843352 0.052883205 109.47803 35.903937 6560.6448 6.6800988e+09 0.15522574 0.051692967 109.54576 35.773259 6562.8716 6.2275478e+09 0.15232165 0.050050504 109.62066 35.633446 6565.0985 5.7289213e+09 0.14968860 0.048206532 109.69319 35.496003 6567.3254 5.2593190e+09 0.14731155 0.046342064 109.76309 35.361182 6569.5523 4.8634096e+09 0.14514941 0.044888368 109.83094 35.232255 6571.7791 4.5542235e+09 0.14298638 0.044290479 109.89647 35.109920 6574.0060 4.2915786e+09 0.13990044 0.042852121 109.96280 34.984382 6576.2329 4.0126010e+09 0.13716914 0.041103345 110.03271 34.844569 6578.4598 3.7165392e+09 0.13410569 0.037923612 110.10104 34.708700 6580.6866 3.4463658e+09 0.13100008 0.035886213 110.16221 34.590735 6582.9135 3.2187581e+09 0.12825657 0.035045206 110.22338 34.472770 6585.1404 3.0218288e+09 0.12525373 0.033858550 110.29234 34.335321 6587.3672 2.8325661e+09 0.12228414 0.033239736 110.36225 34.195508 6589.5941 2.6592252e+09 0.11909788 0.031867304 110.42050 34.071236 6591.8210 2.5214388e+09 0.11540979 0.028275520 110.47730 33.948902 6594.0479 2.3909344e+09 0.11216961 0.026146250 110.54196 33.819073 6596.2747 2.2616163e+09 0.10907030 0.025726025 110.61187 33.684252 6598.5016 2.1367525e+09 0.10718709 0.025167680 110.67656 33.556882 6600.7285 2.0214995e+09 0.10698367 0.026487496 110.73773 33.434528 6602.9554 1.9227294e+09 0.10612864 0.026701373 110.80007 33.306777 6605.1822 1.8176070e+09 0.10546207 0.026817917 110.86498 33.166964 6607.4091 1.7112422e+09 0.10403263 0.024899178 110.92741 33.033847 6609.6360 1.6229688e+09 0.10104782 0.023894845 110.98421 32.915881 6611.8628 1.5458894e+09 0.098512296 0.024408216 111.04115 32.797530 6614.0897 1.4678135e+09 0.097533047 0.023878680 111.10606 32.657717 6616.3166 1.3848510e+09 0.096105805 0.023331988 111.17085 32.518231 6618.5435 1.3106440e+09 0.095472938 0.024181175 111.22765 32.400266 6620.7703 1.2472079e+09 0.094629065 0.025015438 111.28445 32.282300 6622.9972 1.1907966e+09 0.093079689 0.024492569 111.34714 32.148469 6625.2241 1.1271950e+09 0.091578622 0.025665002 111.41205 32.008654 6627.4510 1.0623198e+09 0.089561254 0.025491007 111.47109 31.884649 6629.6778 1.0050779e+09 0.088270763 0.025986551 111.52789 31.766684 6631.9047 9.5004147e+08 0.086404192 0.026022665 111.58822 31.639222 6634.1316 9.0261339e+08 0.084760267 0.026336440 111.65313 31.499408 6636.3584 8.5555296e+08 0.083124447 0.026410553 111.71454 31.369033 6638.5853 8.1714301e+08 0.081806465 0.025646142 111.77134 31.251068 6640.8122 7.8226044e+08 0.081999279 0.025171279 111.82858 31.129973 6643.0391 7.4128712e+08 0.081637352 0.025198517 111.88850 30.990159 6645.2659 7.0634902e+08 0.080705751 0.025576266 111.94737 30.853417 6647.4928 6.7178144e+08 0.079847548 0.026697247 111.99980 30.735452 6649.7197 6.4384872e+08 0.079209282 0.026641639 112.05223 30.617486 6651.9466 6.1434150e+08 0.078968326 0.027209564 112.11529 30.480911 6654.1734 5.8129751e+08 0.078523601 0.027962343 112.18021 30.341097 6656.4003 5.5405156e+08 0.076907941 0.028374761 112.23452 30.219835 6658.6272 5.2571197e+08 0.075590143 0.031173386 112.28694 30.101870 6660.8540 5.0391722e+08 0.074355884 0.032402286 112.34357 29.974461 6663.0809 4.7635243e+08 0.073357750 0.032460788 112.40349 29.839640 6665.3078 4.4894911e+08 0.073046155 0.028042800 112.46341 29.702035 6667.5347 4.2253567e+08 0.072736209 0.027299850 112.52334 29.562222 6669.7615 3.9440827e+08 0.072229960 0.027573549 112.57910 29.434533 6671.9884 3.7731118e+08 0.072200097 0.026879434 112.63153 29.316568 6674.2153 3.5717960e+08 0.071489457 0.029136398 112.68595 29.194116 6676.4422 3.4057192e+08 0.069376825 0.031998692 112.74587 29.059296 6678.6690 3.2679435e+08 0.068657180 0.030489138 112.80266 28.928917 6680.8959 3.0883340e+08 0.069739725 0.029634880 112.85072 28.810952 6683.1228 2.9900027e+08 0.070489777 0.031368511 112.89878 28.692988 6685.3496 2.8348752e+08 0.070452682 0.033074154 112.95840 28.553726 6687.5765 2.7079201e+08 0.068595507 0.034021368 113.01832 28.413912 6689.8034 2.6558789e+08 0.066464305 0.033292840 113.07096 28.295335 6692.0303 2.5440766e+08 0.065708515 0.032730181 113.12339 28.177370 6694.2571 2.4486974e+08 0.065209546 0.030900630 113.17753 28.047889 6696.4840 2.3025325e+08 0.065529244 0.029876883 113.23245 27.913070 6698.7109 2.1648302e+08 0.064979304 0.031193590 113.28738 27.778250 6700.9378 2.0719549e+08 0.063614529 0.031363281 113.34231 27.643429 6703.1646 1.9697108e+08 0.063827102 0.034087197 113.39554 27.520035 6705.3915 1.8939172e+08 0.064346947 0.037364623 113.44797 27.402069 6707.6184 1.8198373e+08 0.064383540 0.040098244 113.50137 27.277546 6709.8453 1.7532549e+08 0.063708104 0.040594923 113.55630 27.142725 6712.0721 1.6412719e+08 0.062028968 0.041963868 113.61122 27.005974 6714.2990 1.5545352e+08 0.060229516 0.047325887 113.66615 26.866162 6716.5259 1.4681364e+08 0.058628457 0.049175917 113.71844 26.734732 6718.7527 1.3679683e+08 0.056537031 0.050984753 113.76650 26.616767 6720.9796 1.3171779e+08 0.056650279 0.050306261 113.81521 26.497202 6723.2065 1.2457290e+08 0.055405328 0.049484106 113.87014 26.362381 6725.4334 1.2498106e+08 0.050602248 0.041305320 113.92507 26.227561 6727.6602 1.2305289e+08 0.048879013 0.040080766 113.97999 26.092741 6729.8871 1.1520983e+08 0.047321370 0.040454148 114.03492 25.957920 6732.1140 1.0773652e+08 0.044974277 0.043761192 114.08985 25.823100 6734.3409 97340489. 0.043563329 0.049333091 114.14380 25.689745 6736.5677 93339252. 0.044201531 0.052501324 114.18749 25.571779 6738.7946 89786529. 0.043846509 0.061695718 114.23118 25.453814 6741.0215 86761116. 0.041377837 0.065819926 114.28384 25.322396 6743.2483 86277540. 0.036065926 0.072722760 114.33876 25.187576 6745.4752 83599184. 0.031904557 0.078766664 114.39369 25.056728 6747.7021 79528577. 0.025915830 0.067119459 114.44862 24.926901 6749.9290 73572383. 0.021477190 0.072023582 114.49959 24.793115 6752.1558 69186453. 0.016410597 0.073954146 114.54952 24.658295 6754.3827 66378236. 0.013054005 0.075598029 114.60340 24.523474 6756.6096 65554022. 0.0085976510 0.075735450 114.65832 24.388654 6758.8365 62583126. 0.0066677344 0.075474114 114.70440 24.267106 6761.0633 60352269. 0.0046876057 0.077973457 114.74809 24.149141 6763.2902 60068795. 0.0076647804 0.077321572 114.79490 24.022771 6765.5171 58114619. 0.0059633470 0.079625586 114.84483 23.887950 6767.7439 57416068. -0.0014520085 0.081142740 114.89725 23.753130 6769.9708 57851401. -0.016978139 0.086808921 114.95217 23.618310 6772.1977 59856809. -0.084527977 0.092210067 115.00464 23.485953 6774.4246 57659105. -0.031764799 0.097611213 115.05457 23.356127 6776.6514 48372043. 0.097283395 0.10301236 115.10450 23.223850