# # 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 = 44.348095 km # Date (UTC) = 2010-12-06T10:26:49.979 # Date (julian) = 2455536.93530068 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6511.3554 6.8642536e+10 0.10612107 0.035707401 94.798392 34.820898 6513.5978 5.9500520e+10 0.11691279 0.036383575 94.857059 34.715299 6515.8401 5.2629139e+10 0.12802558 0.037059749 94.916869 34.608414 6518.0824 4.6843371e+10 0.13936832 0.037735923 94.987258 34.489628 6520.3248 4.1557741e+10 0.15085348 0.038412097 95.057648 34.370843 6522.5671 3.6487780e+10 0.16084137 0.039065763 95.124412 34.248431 6524.8095 3.2202852e+10 0.16682303 0.039714535 95.190404 34.125247 6527.0518 2.8562648e+10 0.17122634 0.040754102 95.252352 34.011769 6529.2942 2.5920046e+10 0.17421784 0.042704391 95.311011 33.906184 6531.5365 2.3729374e+10 0.17722555 0.046009604 95.369670 33.800598 6533.7789 2.1624023e+10 0.17897787 0.047850586 95.431245 33.681888 6536.0212 1.9581347e+10 0.17835501 0.047809491 95.492837 33.563103 6538.2636 1.7556752e+10 0.17942481 0.049285026 95.557603 33.444318 6540.5059 1.5842180e+10 0.17894984 0.051093111 95.623595 33.325533 6542.7483 1.4356077e+10 0.17713118 0.051286321 95.686302 33.212659 6544.9906 1.3188095e+10 0.17551110 0.052447952 95.744966 33.107062 6547.2330 1.2260040e+10 0.17259737 0.053375955 95.803630 33.001464 6549.4753 1.1395157e+10 0.16904196 0.054450656 95.864904 32.884111 6551.7177 1.0515799e+10 0.16567667 0.055487659 95.926496 32.765326 6553.9600 9.6414036e+09 0.16183741 0.054852487 95.983855 32.654704 6556.2023 8.9215668e+09 0.15865548 0.053983376 96.038602 32.549118 6558.4447 8.3601807e+09 0.15594291 0.052860368 96.094039 32.442455 6560.6870 7.8164918e+09 0.15259142 0.051654851 96.160031 32.319270 6562.9294 7.2862445e+09 0.14960247 0.049995554 96.226023 32.196084 6565.1717 6.7268459e+09 0.14682644 0.048123386 96.288547 32.076368 6567.4141 6.1834808e+09 0.14442978 0.046267068 96.350139 31.957583 6569.6564 5.7061960e+09 0.14236387 0.044895148 96.408205 31.845599 6571.8988 5.3009744e+09 0.14034245 0.044257801 96.462952 31.740014 6574.1411 4.9839773e+09 0.13743544 0.042787222 96.517699 31.634429 6576.3835 4.6802905e+09 0.13477770 0.040930006 96.574800 31.516182 6578.6258 4.3693697e+09 0.13166951 0.037661369 96.632004 31.397379 6580.8682 4.0675719e+09 0.12871443 0.035718440 96.687524 31.287636 6583.1105 3.8186138e+09 0.12622143 0.034965728 96.742271 31.182051 6585.3529 3.6072557e+09 0.12334432 0.033688667 96.797896 31.074774 6587.5952 3.4046822e+09 0.12066758 0.033290245 96.859488 30.955988 6589.8376 3.1742842e+09 0.11782883 0.031384338 96.921080 30.837203 6592.0799 2.9404269e+09 0.11451037 0.027995914 96.978909 30.722180 6594.3223 2.7230499e+09 0.11127947 0.025995623 97.036101 30.607795 6596.5646 2.5479038e+09 0.10762656 0.025724707 97.091869 30.498533 6598.8069 2.3993687e+09 0.10459247 0.025021900 97.146617 30.392948 6601.0493 2.2651303e+09 0.10352583 0.027068904 97.201426 30.287034 6603.2916 2.1284403e+09 0.10183831 0.026490622 97.258620 30.168249 6605.5340 1.9937616e+09 0.10105439 0.027113017 97.315815 30.049464 6607.7763 1.8735332e+09 0.099329002 0.024174023 97.368234 29.940594 6610.0187 1.7650010e+09 0.096551134 0.024020830 97.419076 29.834995 6612.2610 1.6706631e+09 0.094473514 0.024125719 97.471158 29.726823 6614.5034 1.5712456e+09 0.093658377 0.023593685 97.528350 29.608038 6616.7457 1.4769547e+09 0.092439582 0.023399341 97.585541 29.489252 6618.9881 1.3768978e+09 0.091991285 0.024516908 97.642736 29.370467 6621.2304 1.2930211e+09 0.091374798 0.025013073 97.699931 29.251682 6623.4728 1.2173096e+09 0.089869733 0.024666979 97.752998 29.141466 6625.7151 1.1480220e+09 0.088729557 0.026250950 97.803835 29.035881 6627.9575 1.0906555e+09 0.087021424 0.025686663 97.855255 28.929488 6630.1998 1.0301932e+09 0.085658723 0.025928794 97.912450 28.815102 6632.4422 9.7894770e+08 0.083996204 0.026085363 97.969645 28.700717 6634.6845 9.2088945e+08 0.082591980 0.026376774 98.023234 28.582728 6636.9269 8.6789935e+08 0.081070720 0.026189819 98.076025 28.463943 6639.1692 8.1352621e+08 0.080133374 0.025567600 98.127754 28.352356 6641.4115 7.6478406e+08 0.080700834 0.025149698 98.178600 28.246756 6643.6539 7.3330652e+08 0.079754249 0.025291348 98.229446 28.141157 6645.8962 6.8731098e+08 0.078649193 0.025871539 98.282216 28.022517 6648.1386 6.4939073e+08 0.077497726 0.027057055 98.335007 27.903733 6650.3809 6.0246988e+08 0.076766440 0.026342444 98.390951 27.788098 6652.6233 5.6517285e+08 0.076325839 0.027422011 98.448146 27.673713 6654.8656 5.3789127e+08 0.075373112 0.027667460 98.503390 27.557378 6657.1080 5.1075406e+08 0.073685425 0.029026360 98.556181 27.438593 6659.3503 4.7861687e+08 0.072525278 0.031761521 98.607976 27.322716 6661.5927 4.4898869e+08 0.071460275 0.032836809 98.654904 27.221042 6663.8350 4.2991202e+08 0.070310646 0.032251809 98.701832 27.119367 6666.0774 4.0628141e+08 0.070587142 0.026923671 98.752353 27.007206 6668.3197 3.9344792e+08 0.069858132 0.027753697 98.805144 26.888421 6670.5621 3.6849921e+08 0.069790581 0.027068239 98.857936 26.769637 6672.8044 3.4492805e+08 0.069723833 0.027345848 98.910730 26.650852 6675.0468 3.2431649e+08 0.068447781 0.029887908 98.963525 26.532361 6677.2891 3.0466121e+08 0.066628544 0.031947230 99.016328 26.417958 6679.5314 2.9065456e+08 0.066583758 0.029828606 99.069130 26.303555 6681.7738 2.7629007e+08 0.067675064 0.030251002 99.121924 26.185673 6684.0161 2.6519484e+08 0.068068234 0.032654911 99.174715 26.066888 6686.2585 2.4918609e+08 0.067492290 0.033911478 99.224451 25.957019 6688.5008 2.4118438e+08 0.064839937 0.033900801 99.271378 25.855344 6690.7432 2.2874670e+08 0.063571366 0.033030694 99.318306 25.753669 6692.9855 2.1762925e+08 0.062866545 0.031620890 99.366648 25.639742 6695.2279 2.0701246e+08 0.062440472 0.029817615 99.415042 25.525356 6697.4702 1.9680255e+08 0.061945061 0.030150773 99.466476 25.407931 6699.7126 1.8805465e+08 0.060627350 0.030932930 99.519270 25.289146 6701.9549 1.7806166e+08 0.059079138 0.032810586 99.570226 25.172200 6704.1973 1.6377701e+08 0.059858722 0.036274422 99.618620 25.057814 6706.4396 1.5785512e+08 0.060073954 0.039211521 99.667651 24.942791 6708.6820 1.5370328e+08 0.059869381 0.040786212 99.720443 24.824006 6710.9243 1.4724086e+08 0.058574411 0.040677417 99.773234 24.705221 6713.1667 1.4053400e+08 0.056846551 0.044289388 99.822192 24.590272 6715.4090 1.2837044e+08 0.055351626 0.047796907 99.870586 24.475887 6717.6514 1.2300228e+08 0.053580173 0.049833979 99.921620 24.361491 6719.8937 1.2418213e+08 0.052295994 0.050520760 99.974422 24.247088 6722.1360 1.1816393e+08 0.052669090 0.050437015 100.02579 24.131256 6724.3784 1.1413049e+08 0.050035390 0.046766831 100.07418 24.012471 6726.6207 1.1041742e+08 0.047221712 0.040956966 100.12257 23.893920 6728.8631 1.0252411e+08 0.047213809 0.040851378 100.17097 23.779534 6731.1054 96848458. 0.045775178 0.041959861 100.21936 23.665149 6733.3478 87370688. 0.045143761 0.045812520 100.26775 23.550763 6735.5901 81735313. 0.046436130 0.049919899 100.31615 23.436377 6737.8325 82833458. 0.047965934 0.056787442 100.36454 23.321991 6740.0748 82839450. 0.047950789 0.064178186 100.41293 23.207606 6742.3172 81643447. 0.045508231 0.069383599 100.46133 23.093222 6744.5595 81117935. 0.041394412 0.078226186 100.50972 22.978836 6746.8019 72632196. 0.038034009 0.069664687 100.55811 22.864450 6749.0442 69632297. 0.037651218 0.072265828 100.61315 22.729525 6751.2866 60725260. 0.035257543 0.073832830 100.66846 22.593767 6753.5289 54384110. 0.033947695 0.074688932 100.71277 22.478789 6755.7713 54441281. 0.032066257 0.074267199 100.75676 22.364403 6758.0136 49575163. 0.032563778 0.073734087 100.80384 22.250017 6760.2559 49687112. 0.034096177 0.076549356 100.85223 22.135631 6762.4983 44132139. 0.041424331 0.077247051 100.90062 22.021245 6764.7406 43944518. 0.046897752 0.079518768 100.94902 21.906860 6766.9830 44251954. 0.059891872 0.081937292 100.99770 21.789970 6769.2253 47539843. 0.043465566 0.085000807 101.04798 21.659241 6773.7100 49576647. 0.012253914 0.095878162 101.14635 21.416794