# # 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 = 45.168657 km # Date (UTC) = 2016-12-29T10:13:27.716 # Date (julian) = 2457751.92601523 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6506.3565 6.1385892e+10 0.079689839 0.034199995 103.33045 30.026278 6508.9104 5.3889064e+10 0.091747357 0.034970116 103.39566 29.900526 6511.4643 4.7000145e+10 0.10392540 0.035740237 103.46581 29.765237 6514.0182 4.1361524e+10 0.11641538 0.036510358 103.53307 29.633862 6516.5721 3.6613807e+10 0.12922234 0.037280479 103.59543 29.509153 6519.1260 3.2717892e+10 0.14240830 0.038050600 103.65722 29.384997 6521.6799 2.9433756e+10 0.15594561 0.038820720 103.71513 29.264726 6524.2338 2.6413805e+10 0.16346437 0.039510012 103.77304 29.144456 6526.7877 2.3639306e+10 0.16949044 0.040493874 103.83486 29.024199 6529.3416 2.1160415e+10 0.17371813 0.042779883 103.89721 28.903945 6531.8955 1.8935493e+10 0.17780058 0.046532049 103.95674 28.783690 6534.4494 1.6947317e+10 0.17942019 0.048070263 104.01464 28.663435 6537.0033 1.5193243e+10 0.18010985 0.048686767 104.07428 28.543180 6539.5572 1.3627921e+10 0.18010391 0.050318060 104.13663 28.422925 6542.1111 1.2278953e+10 0.17852443 0.051044403 104.19835 28.302668 6544.6650 1.1161248e+10 0.17650481 0.052183774 104.25625 28.182397 6547.2189 1.0193312e+10 0.17343657 0.053370591 104.31416 28.062126 6549.7728 9.2143809e+09 0.16934233 0.054753776 104.37857 27.928352 6552.3266 8.2728554e+09 0.16463909 0.055504549 104.44371 27.793064 6554.8805 7.3923193e+09 0.15983722 0.054850858 104.50231 27.671358 6557.4344 6.6524100e+09 0.15538002 0.053593796 104.56021 27.551102 6559.9883 6.0626920e+09 0.15169502 0.052275625 104.61811 27.430847 6562.5422 5.5511637e+09 0.14775426 0.050363943 104.67601 27.310592 6565.0961 5.0875041e+09 0.14443841 0.048209233 104.73391 27.190337 6567.6500 4.6652663e+09 0.14152882 0.046067568 104.79181 27.070082 6570.2039 4.2757117e+09 0.13921959 0.044833034 104.84971 26.949825 6572.7578 3.9226130e+09 0.13664047 0.043796167 104.90762 26.829555 6575.3117 3.6172351e+09 0.13366968 0.042061950 104.96553 26.709285 6577.8656 3.3513110e+09 0.13033319 0.038860690 105.01932 26.589028 6580.4195 3.0989507e+09 0.12685543 0.036133057 105.07276 26.468773 6582.9734 2.8537728e+09 0.12393063 0.035028900 105.13413 26.338331 6585.5273 2.6089714e+09 0.12091613 0.033549198 105.19928 26.203042 6588.0812 2.3904070e+09 0.11833230 0.033352810 105.25644 26.078004 6590.6351 2.1992078e+09 0.11488526 0.029880666 105.30989 25.957749 6593.1890 2.0438486e+09 0.11140281 0.026926503 105.36528 25.839432 6595.7429 1.9118061e+09 0.10727954 0.025700612 105.42319 25.723616 6598.2968 1.7790589e+09 0.10395003 0.025265462 105.48025 25.606949 6600.8507 1.6655590e+09 0.10230104 0.026738751 105.53369 25.486694 6603.4046 1.5530721e+09 0.099966306 0.026423755 105.58713 25.366440 6605.9585 1.4530710e+09 0.098106436 0.027469142 105.64058 25.246185 6608.5124 1.3615933e+09 0.094305070 0.023718824 105.69403 25.125930 6611.0663 1.2668644e+09 0.090306314 0.024916185 105.75216 24.995133 6613.6202 1.1739810e+09 0.089180738 0.023801137 105.81229 24.859844 6616.1741 1.0870023e+09 0.087940994 0.023309621 105.86771 24.738303 6618.7280 1.0124738e+09 0.087668048 0.024320506 105.92115 24.622502 6621.2819 9.4883084e+08 0.087154025 0.024996018 105.97460 24.504644 6623.8358 8.9767222e+08 0.085516488 0.024801466 106.02805 24.384374 6626.3897 8.4460913e+08 0.084316040 0.026094428 106.08295 24.260870 6628.9436 7.8665750e+08 0.083054898 0.026086193 106.14308 24.125581 6631.4975 7.3455280e+08 0.081538942 0.025981298 106.20174 23.994571 6634.0514 6.8454324e+08 0.080220685 0.026330589 106.25518 23.878770 6636.6053 6.3812665e+08 0.078945647 0.026314706 106.30863 23.762970 6639.1592 6.0184135e+08 0.078074307 0.025571189 106.36208 23.642828 6641.7131 5.6676236e+08 0.078881787 0.025150722 106.41552 23.522573 6644.2670 5.3441405e+08 0.077999361 0.025372458 106.47019 23.395009 6646.8208 5.0177978e+08 0.076970173 0.026345045 106.52531 23.264731 6649.3747 4.5992124e+08 0.076057028 0.027117120 106.57920 23.141793 6651.9286 4.2225610e+08 0.075844943 0.027195836 106.63266 23.021522 6654.4825 3.9112920e+08 0.075134909 0.027830659 106.68393 22.903435 6657.0364 3.6289001e+08 0.073202034 0.028943377 106.73292 22.787635 6659.5903 3.4287321e+08 0.071652740 0.031711454 106.78462 22.668313 6662.1442 3.2141539e+08 0.070153783 0.032963349 106.84475 22.538034 6664.6981 3.0242521e+08 0.069264763 0.029651664 106.90213 22.410236 6667.2520 2.8391935e+08 0.069127051 0.027196031 106.95112 22.289981 6669.8059 2.6642243e+08 0.068621219 0.027527963 107.00015 22.169668 6672.3598 2.4912461e+08 0.068879072 0.027088158 107.05524 22.039425 6674.9137 2.3404347e+08 0.067942593 0.029725572 107.11031 21.909237 6677.4676 2.2213397e+08 0.066179207 0.031693454 107.15932 21.788942 6680.0215 2.1016129e+08 0.066707847 0.029446062 107.20832 21.668671 6682.5754 2.0109246e+08 0.067845780 0.030864178 107.26198 21.540778 6685.1293 1.9031961e+08 0.068065477 0.032841417 107.31710 21.410500 6687.6832 1.7656055e+08 0.066123172 0.033961871 107.37093 21.291310 6690.2371 1.6945016e+08 0.063936896 0.033088692 107.42438 21.175510 6692.7910 1.6135490e+08 0.062956813 0.031846790 107.47869 21.052171 6695.3449 1.4937377e+08 0.062455945 0.029796121 107.53381 20.921893 6697.8988 1.3802729e+08 0.061743989 0.030205009 107.58338 20.796876 6700.4527 1.2663582e+08 0.059792922 0.031003491 107.62792 20.676621 6703.0066 1.2283599e+08 0.058740809 0.033691719 107.67542 20.553563 6705.5605 1.2170880e+08 0.058448230 0.037665035 107.73053 20.423285 6708.1144 1.1893943e+08 0.057671969 0.040168136 107.78565 20.293001 6710.6683 1.0835966e+08 0.055694530 0.040627302 107.84078 20.162703 6713.2222 1.0247302e+08 0.052830483 0.044490189 107.89413 20.036587 6715.7761 97432005. 0.050037537 0.048172334 107.94313 19.920786 6718.3300 95333595. 0.046937294 0.050326319 107.99217 19.804359 6720.8839 93559865. 0.046003989 0.050317355 108.04227 19.674080 6723.4378 86110069. 0.043919093 0.049613093 108.09262 19.543802 6725.9917 80942799. 0.038887902 0.040956575 108.14774 19.413525 6728.5456 76351552. 0.037432739 0.040401337 108.20254 19.283998 6731.0995 73836465. 0.034973077 0.041947963 108.25153 19.168197 6733.6534 71994509. 0.033003919 0.047471559 108.30052 19.052395 6736.2073 71152074. 0.034085477 0.051138533 108.35042 18.924917 6738.7611 67899227. 0.034421993 0.061511567 108.40053 18.794639 6741.3150 63460469. 0.031709191 0.066657221 108.45470 18.664345 6743.8689 59586649. 0.024848946 0.076909309 108.50982 18.534047 6746.4228 56465122. 0.019063727 0.074071282 108.56086 18.403765 6748.9767 55761890. 0.011665428 0.072155551 108.61097 18.273487 6751.5306 53682960. -0.025160906 0.073936026 108.66108 18.143209 6754.0845 49362332. -0.0017539238 0.076077533 108.71118 18.012931 6756.6384 45174552. 0.062300131 0.075809683 108.76129 17.882652