# # 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 = 55.028690 km # Date (UTC) = 2014-01-29T05:43:30.495 # Date (julian) = 2456686.73854740 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6491.6474 6.0745357e+10 0.031141901 0.029764518 161.85494 54.055067 6494.1401 5.5662890e+10 0.038885267 0.030516171 162.11469 53.794187 6496.6327 5.0666249e+10 0.046381019 0.031267824 162.31815 53.575070 6499.1254 4.6162910e+10 0.053490942 0.032019477 162.52157 53.355996 6501.6181 4.2391418e+10 0.060207989 0.032771129 162.74622 53.113673 6504.1107 3.8771841e+10 0.066638511 0.033522782 162.96662 52.871777 6506.6034 3.5361945e+10 0.072897594 0.034274435 163.16225 52.652673 6509.0960 3.2428044e+10 0.079385309 0.035026088 163.35785 52.433606 6511.5887 2.9921292e+10 0.086420066 0.035777740 163.55348 52.214495 6514.0813 2.7655076e+10 0.094353745 0.036529393 163.74396 51.995380 6516.5740 2.5569536e+10 0.10352713 0.037281046 163.92877 51.779275 6519.0666 2.3675153e+10 0.11420655 0.038032699 164.10953 51.567215 6521.5593 2.1933157e+10 0.12663850 0.038784352 164.29734 51.348100 6524.0519 2.0282093e+10 0.13486512 0.039445408 164.47869 51.128983 6526.5446 1.8743959e+10 0.14292911 0.040239015 164.65865 50.909896 6529.0372 1.7279752e+10 0.15086560 0.042295093 164.83649 50.690819 6531.5299 1.5889889e+10 0.15946452 0.045999933 165.00866 50.471704 6534.0225 1.4599532e+10 0.16669593 0.047950862 165.18082 50.252586 6536.5152 1.3361825e+10 0.17119702 0.048251455 165.35295 50.033508 6539.0078 1.2339155e+10 0.17374383 0.049653122 165.50973 49.830356 6541.5005 1.1480973e+10 0.17341175 0.051164222 165.64668 49.647767 6543.9931 1.0697091e+10 0.17093349 0.051642549 165.81542 49.432203 6546.4858 9.9227563e+09 0.16882531 0.052864261 165.97780 49.213088 6548.9785 9.0473096e+09 0.16664809 0.053959845 166.13701 48.993991 6551.4711 8.2784940e+09 0.16521381 0.055401116 166.29897 48.776990 6553.9638 7.6423291e+09 0.16313536 0.054850599 166.42940 48.587878 6556.4564 7.0936492e+09 0.16126388 0.053946025 166.57379 48.382706 6558.9491 6.6669341e+09 0.15884011 0.052430586 166.72358 48.172994 6561.4417 6.2690093e+09 0.15631812 0.051155013 166.85400 47.990403 6563.9344 5.8920763e+09 0.15356556 0.048847518 167.00328 47.781409 6566.4270 5.5014001e+09 0.15167268 0.046941320 167.15628 47.562323 6568.9197 5.1229636e+09 0.14995904 0.044926264 167.30080 47.349341 6571.4123 4.7851208e+09 0.14874145 0.044390661 167.42471 47.166750 6573.9050 4.4823440e+09 0.14657122 0.042931258 167.56433 46.956024 6576.3976 4.2289037e+09 0.14430839 0.040913712 167.70418 46.744898 6578.8903 3.9648811e+09 0.14131683 0.037243753 167.82808 46.562306 6581.3829 3.7267347e+09 0.13867250 0.035480651 167.96591 46.349697 6583.8756 3.5091920e+09 0.13600006 0.034578483 168.09396 46.150509 6586.3682 3.3127850e+09 0.13322548 0.033166536 168.21134 45.967921 6588.8609 3.1630458e+09 0.13025007 0.033092432 168.32872 45.785330 6591.3535 3.0139939e+09 0.12661175 0.028802975 168.45732 45.581545 6593.8462 2.8629044e+09 0.12346541 0.026315513 168.59218 45.363484 6596.3389 2.7020862e+09 0.12037090 0.025725733 168.70301 45.180930 6598.8315 2.5353919e+09 0.11861065 0.025010176 168.82864 44.974017 6601.3242 2.3934232e+09 0.11890302 0.027198349 168.95306 44.769088 6603.8168 2.2602051e+09 0.11783237 0.026179725 169.06391 44.586500 6606.3095 2.1564996e+09 0.11751310 0.026947872 169.17477 44.398336 6608.8021 2.0757976e+09 0.11456839 0.023711164 169.28563 44.211321 6611.2948 1.9885465e+09 0.11151663 0.024770482 169.39648 44.028733 6613.7874 1.8961700e+09 0.11051430 0.023862496 169.51863 43.817405 6616.2801 1.7957637e+09 0.10905676 0.023326256 169.63318 43.616932 6618.7727 1.7016243e+09 0.10844331 0.024354294 169.73752 43.434343 6621.2654 1.6212785e+09 0.10752095 0.025001486 169.84185 43.251755 6623.7580 1.5582077e+09 0.10543649 0.024772664 169.94619 43.066279 6626.2507 1.4936977e+09 0.10378263 0.026271513 170.05053 42.877168 6628.7433 1.4242574e+09 0.10187299 0.026004896 170.17384 42.660777 6631.2360 1.3482975e+09 0.099859646 0.025954737 170.28174 42.464745 6633.7286 1.2754724e+09 0.098073629 0.026279466 170.38017 42.282187 6636.2213 1.2160703e+09 0.096070739 0.026463816 170.48451 42.099599 6638.7139 1.1602594e+09 0.094483499 0.025640538 170.58517 41.913331 6641.2066 1.1059282e+09 0.094596086 0.025149002 170.68298 41.724418 6643.6992 1.0530969e+09 0.093310499 0.025298197 170.78080 41.541830 6646.1919 1.0101686e+09 0.091648586 0.026019482 170.87862 41.359241 6648.6846 9.6868435e+08 0.090052500 0.027422527 170.97643 41.176650 6651.1772 9.2675518e+08 0.089428445 0.026619969 171.08554 40.958916 6653.6699 8.7542051e+08 0.089024649 0.027867668 171.18704 40.764853 6656.1625 8.2718317e+08 0.087322718 0.028166054 171.28387 40.581274 6658.6552 7.8633406e+08 0.085725998 0.031223026 171.37517 40.392164 6661.1478 7.4809078e+08 0.084277409 0.032610236 171.46646 40.207087 6663.6405 7.1790973e+08 0.082820743 0.032305723 171.55775 40.024498 6666.1331 6.8758623e+08 0.082658924 0.026934536 171.64905 39.841906 6668.6258 6.6023686e+08 0.081500251 0.028024540 171.74034 39.659316 6671.1184 6.3155886e+08 0.081316577 0.026867036 171.83164 39.476728 6673.6111 6.0201796e+08 0.080615225 0.028373132 171.92291 39.294177 6676.1037 5.7139134e+08 0.078140555 0.031780579 172.01104 39.111606 6678.5964 5.4398967e+08 0.076944205 0.030537726 172.09582 38.929015 6681.0890 5.1751130e+08 0.077708303 0.029725666 172.18679 38.740229 6683.5817 4.9194920e+08 0.078094920 0.032041053 172.27536 38.553839 6686.0743 4.7211572e+08 0.077289233 0.033804337 172.36013 38.371249 6688.5670 4.4820720e+08 0.074078448 0.033916072 172.44491 38.188659 6691.0596 4.2820113e+08 0.072390096 0.032987190 172.52968 38.006070 6693.5523 4.0822258e+08 0.071128571 0.031414616 172.61446 37.823481 6696.0450 3.9058488e+08 0.070546491 0.029694462 172.69921 37.640921 6698.5376 3.7734949e+08 0.069108110 0.030955741 172.78397 37.458357 6701.0303 3.6087846e+08 0.066814801 0.031453842 172.86875 37.275769 6703.5229 3.4780718e+08 0.066414324 0.034983722 172.95353 37.093181 6706.0156 3.3138394e+08 0.066403182 0.038473489 173.04027 36.902708 6708.5082 3.1400803e+08 0.065955084 0.040597006 173.13417 36.683591 6711.0009 2.9470249e+08 0.064292923 0.040693219 173.21952 36.498735 6713.4935 2.7738781e+08 0.062001795 0.045471579 173.30165 36.316161 6715.9862 2.6507801e+08 0.059937120 0.048387217 173.37988 36.133609 6718.4788 2.5615953e+08 0.057389579 0.050558148 173.45813 35.951025 6720.9715 2.4866017e+08 0.057203112 0.050307204 173.53638 35.768436 6723.4641 2.3870355e+08 0.055754782 0.049627797 173.61464 35.585846 6725.9568 2.2895812e+08 0.051442938 0.040978363 173.69289 35.403257 6728.4494 2.1656035e+08 0.050694612 0.040265096 173.77114 35.220669 6730.9421 2.0522693e+08 0.048935969 0.041670620 173.84939 35.038081 6733.4347 1.9476284e+08 0.047571939 0.046284637 173.92765 34.855489 6735.9274 1.9024825e+08 0.048738816 0.050277928 174.00458 34.672905 6738.4200 1.9013498e+08 0.049948365 0.059633633 174.07630 34.490354 6740.9127 1.8548769e+08 0.048983597 0.065609549 174.15239 34.307778 6743.4054 1.8110611e+08 0.044518582 0.073781921 174.22975 34.125189 6745.8980 1.7039585e+08 0.042164242 0.078944399 174.30148 33.942598 6748.3907 1.6099130e+08 0.038038893 0.069072150 174.37321 33.760009 6750.8833 1.5349089e+08 0.035179710 0.073512414 174.44539 33.577421 6753.3760 1.4583681e+08 0.032169813 0.074193966 174.52364 33.394833 6755.8686 1.4220012e+08 0.029546473 0.074224514 174.59840 33.212243 6758.3613 1.3645752e+08 0.028920045 0.074469266 174.67013 33.029665 6760.8539 1.3203287e+08 0.029457010 0.077689653 174.74185 32.853630 6763.3466 1.2512022e+08 0.035186775 0.077493252 174.81358 32.674528 6765.8392 1.2197706e+08 0.037633435 0.079684396 174.88531 32.491940 6768.3319 1.1718341e+08 0.034198485 0.082050191 174.95095 32.309352 6770.8245 1.0849323e+08 0.029350223 0.088879543 175.01878 32.126763 6773.3172 1.0158506e+08 0.024958683 0.094925322 175.09051 31.944173 6775.8098 93114706. 0.020605705 0.10097110 175.17469 31.729893 6778.3025 87161706. 0.016234813 0.10701688 175.24846 31.536165 6780.7951 85205627. 0.011798052 0.11306266 175.31403 31.359733 6783.2878 81456687. 0.0073997184 0.11910843 175.38575 31.177178 6785.7804 77732862. 0.0030127388 0.12515421 175.45407 30.994606 6788.2731 73902921. -0.0013631748 0.13119999 175.51928 30.812016 6790.7657 69227482. -0.0057135591 0.13724577 175.58449 30.629428 6793.2584 67018253. -0.010106244 0.14329155 175.65267 30.449809 6795.7511 64424618. -0.014482904 0.14933733 175.72440 30.273741 6798.2437 59231502. -0.018776798 0.15538310 175.80215 30.057985 6800.7364 55465792. -0.023092927 0.16142888 175.87199 29.862419 6803.2290 51761247. -0.027388475 0.16747466 175.93719 29.680582 6805.7217 51934178. -0.031825080 0.17352044 176.00240 29.504513 6808.2143 51461555. -0.036191809 0.17956622 176.06761 29.324682 6810.7070 50195797. -0.041040293 0.18561200 176.13305 29.140850 6813.1996 48733169. -0.047138170 0.19165777 176.20348 28.929560 6815.6923 48126828. -0.050607942 0.19770355 176.26992 28.740239 6818.1849 49297681. -0.052627516 0.20374933 176.33513 28.557659