# # 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 = 56.264393 km # Date (UTC) = 2012-01-31T11:02:23.090 # Date (julian) = 2455957.95998947 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6509.1958 9.3018521e+10 0.091904389 0.035056189 75.154539 60.352879 6511.6309 7.9254393e+10 0.10313799 0.035790481 75.508113 60.112138 6514.0660 6.7012224e+10 0.11440951 0.036524772 75.860217 59.863732 6516.5011 5.7523749e+10 0.12597674 0.037259064 76.197395 59.620213 6518.9362 5.0389385e+10 0.13795227 0.037993356 76.472544 59.421496 6521.3712 4.4529307e+10 0.15024398 0.038727647 76.794634 59.183412 6523.8063 3.9526018e+10 0.15756803 0.039378955 77.122000 58.934942 6526.2414 3.4972704e+10 0.16233491 0.039921156 77.401484 58.715880 6528.6765 3.1106460e+10 0.16681406 0.041979127 77.682992 58.493097 6531.1115 2.8231535e+10 0.16991838 0.045391039 77.976663 58.261721 6533.5466 2.5499016e+10 0.17292857 0.047751887 78.230770 58.060913 6535.9817 2.2949816e+10 0.17262897 0.047798437 78.536581 57.802885 6538.4168 2.0852213e+10 0.17417118 0.049359634 78.774338 57.603459 6540.8519 1.8937260e+10 0.17393611 0.051256546 79.011291 57.399523 6543.2869 1.7355116e+10 0.17299525 0.051457203 79.270314 57.177481 6545.7220 1.5761826e+10 0.17148101 0.052462036 79.544756 56.942719 6548.1571 1.4223579e+10 0.17013204 0.053714562 79.774096 56.736313 6550.5922 1.3049040e+10 0.16762224 0.055133637 80.003387 56.529952 6553.0273 1.2178194e+10 0.16470565 0.055321363 80.227294 56.323555 6555.4623 1.1278724e+10 0.16118991 0.054464888 80.467413 56.096424 6557.8974 1.0363175e+10 0.15812286 0.053303602 80.718688 55.859452 6560.3325 9.4351243e+09 0.15506835 0.051974518 80.939624 55.660374 6562.7676 8.6254473e+09 0.15204525 0.050149524 81.146031 55.453967 6565.2027 7.9875029e+09 0.14931667 0.048088276 81.358091 55.247557 6567.6377 7.4154757e+09 0.14704058 0.046077964 81.565545 55.041168 6570.0728 6.9032820e+09 0.14528528 0.044887346 81.765198 54.833868 6572.5079 6.4385858e+09 0.14317344 0.043939297 81.971611 54.619814 6574.9430 6.0059967e+09 0.14082968 0.042402096 82.171795 54.411982 6577.3781 5.5976776e+09 0.13806746 0.039626540 82.370559 54.205572 6579.8131 5.2183197e+09 0.13519740 0.036623482 82.567805 53.999170 6582.2482 4.8597402e+09 0.13261414 0.035226249 82.758879 53.792810 6584.6833 4.5188870e+09 0.13018468 0.034143296 82.949994 53.586405 6587.1184 4.2189427e+09 0.12773760 0.033184596 83.141115 53.375550 6589.5535 3.9437001e+09 0.12514520 0.031947980 83.330134 53.163599 6591.9885 3.6817376e+09 0.12200485 0.028086469 83.513564 52.957238 6594.4236 3.4397277e+09 0.11885022 0.025939982 83.697042 52.750829 6596.8587 3.2369362e+09 0.11528327 0.025723370 83.856242 52.562837 6599.2938 3.0689539e+09 0.11257523 0.024947399 84.005312 52.382024 6601.7288 2.9267184e+09 0.11132517 0.027388936 84.181146 52.175613 6604.1639 2.7759801e+09 0.10871374 0.026168611 84.356942 51.963285 6606.5990 2.6086334e+09 0.10713325 0.026427568 84.529152 51.752856 6609.0341 2.4372963e+09 0.10346852 0.023716056 84.698581 51.545205 6611.4692 2.2793824e+09 0.10049873 0.024659267 84.874414 51.331149 6613.9042 2.1554170e+09 0.099637864 0.023905360 85.014290 51.153056 6616.3393 2.0538016e+09 0.098297763 0.023335556 85.157836 50.969118 6618.7744 1.9525590e+09 0.097806695 0.024355562 85.326023 50.755064 6621.2095 1.8310862e+09 0.097240449 0.025020013 85.486744 50.548473 6623.6446 1.7200814e+09 0.095668105 0.024730626 85.629400 50.360800 6626.0796 1.6165211e+09 0.094541396 0.026489434 85.765812 50.179671 6628.5147 1.5257706e+09 0.092916110 0.025912077 85.926313 49.973311 6630.9498 1.4476140e+09 0.091189434 0.025930642 86.060670 49.789065 6633.3849 1.3584692e+09 0.089845301 0.026219449 86.193696 49.604515 6635.8200 1.2863475e+09 0.088182940 0.026522753 86.346590 49.398105 6638.2550 1.2250077e+09 0.086941736 0.025660531 86.476232 49.217273 6640.6901 1.1649213e+09 0.087036462 0.025186215 86.612359 49.026695 6643.1252 1.1110329e+09 0.086513549 0.025211521 86.764963 48.812949 6645.5603 1.0492560e+09 0.085229502 0.025714152 86.910211 48.606539 6647.9954 9.8682472e+08 0.083996429 0.026961839 87.037881 48.420488 6650.4304 9.3010859e+08 0.083025571 0.026353775 87.162706 48.236539 6652.8655 8.8212680e+08 0.082346479 0.027488659 87.307959 48.022485 6655.3006 8.3888362e+08 0.080666172 0.027734422 87.432669 47.844102 6657.7357 7.9582743e+08 0.078549678 0.029754467 87.558310 47.660403 6660.1708 7.5810870e+08 0.076736171 0.031781202 87.695883 47.446397 6662.6058 7.2162925e+08 0.075108059 0.032704365 87.811237 47.266960 6665.0409 6.9342758e+08 0.074385960 0.028480098 87.925905 47.088588 6667.4760 6.6640646e+08 0.074007492 0.027278297 88.040573 46.910217 6669.9111 6.3715937e+08 0.073474209 0.027419972 88.174294 46.708557 6672.3461 6.0953766e+08 0.073402763 0.027080233 88.296576 46.516816 6674.7812 5.8026044e+08 0.072274549 0.029613807 88.404856 46.338481 6677.2163 5.5280696e+08 0.070187872 0.032050716 88.533785 46.126123 6679.6514 5.2408316e+08 0.070254091 0.029729496 88.649785 45.939165 6682.0865 5.0028040e+08 0.071342107 0.030490605 88.758081 45.766688 6684.5215 4.8325975e+08 0.071577998 0.032680558 88.866377 45.588317 6686.9566 4.6097353e+08 0.070157491 0.034317663 88.985596 45.391956 6689.3917 4.3608913e+08 0.067500028 0.033663429 89.110024 45.184953 6691.8268 4.1281380e+08 0.066574881 0.032806197 89.211953 45.006580 6694.2619 3.9506532e+08 0.065724883 0.030894014 89.313882 44.832200 6696.6969 3.8389585e+08 0.065453865 0.029965350 89.416973 44.657802 6699.1320 3.6666101e+08 0.064176407 0.031468615 89.539287 44.443748 6701.5671 3.4841760e+08 0.062362193 0.032241542 89.646334 44.256417 6704.0022 3.3119134e+08 0.062587516 0.036178623 89.747118 44.078053 6706.4373 3.1536424e+08 0.062646734 0.039207417 89.842651 43.899718 6708.8723 3.0282434e+08 0.062151655 0.040993523 89.954500 43.704281 6711.3074 2.8876249e+08 0.060333222 0.041041988 90.068765 43.506309 6713.7425 2.7256004e+08 0.058132528 0.046372071 90.164322 43.327936 6716.1776 2.6031632e+08 0.056324178 0.048662911 90.259876 43.149564 6718.6127 2.4622539e+08 0.054114618 0.050766577 90.358516 42.966665 6721.0477 2.3338552e+08 0.054521655 0.050318281 90.473189 42.760255 6723.4828 2.2592742e+08 0.053396389 0.049638217 90.571532 42.577804 6725.9179 2.1474379e+08 0.049569374 0.041002656 90.665270 42.399458 6728.3530 2.0892190e+08 0.049112318 0.040128376 90.754456 42.221085 6730.7881 2.0045723e+08 0.047809145 0.041459417 90.861829 42.017250 6733.2231 1.9114296e+08 0.046876365 0.045135745 90.966167 41.820249 6735.6582 1.8426917e+08 0.048102693 0.049992170 91.055353 41.648246 6738.0933 1.7592329e+08 0.050072533 0.057834688 91.144539 41.470921 6740.5284 1.6757311e+08 0.049949685 0.064952988 91.238464 41.283071 6742.9634 1.5783682e+08 0.046854564 0.070958373 91.345465 41.069069 6745.3985 1.4897852e+08 0.043986448 0.078734424 91.435405 40.895287 6747.8336 1.4354184e+08 0.040004250 0.067074183 91.524591 40.720814 6750.2687 1.4091317e+08 0.037463355 0.072462922 91.613776 40.542441 6752.7038 1.3701342e+08 0.034753889 0.073320089 91.697753 40.364070 6755.1388 1.3509457e+08 0.032767204 0.074544471 91.784679 40.178746 6757.5739 1.2821349e+08 0.030823406 0.074998353 91.884037 39.972384 6760.0090 1.2336359e+08 0.031624743 0.076078438 91.973832 39.792333 6762.4441 1.1950770e+08 0.035687558 0.077334505 92.060661 39.613962 6764.8792 1.1444534e+08 0.038438715 0.079525404 92.143479 39.435591 6767.3142 1.1087513e+08 0.037348164 0.081623898 92.239555 39.234775 6769.7493 1.0851673e+08 0.031474741 0.086271690 92.330778 39.042170 6772.1844 1.0687183e+08 0.026387645 0.092177828 92.413592 38.863797 6774.6195 1.0492275e+08 0.021271003 0.098083966 92.490531 38.685426 6777.0546 1.0586768e+08 0.016098129 0.10399010 92.575062 38.497178 6779.4896 1.0273385e+08 0.010929066 0.10989624 92.673400 38.292062 6781.9247 1.0168696e+08 0.0057466881 0.11580238 92.749847 38.113690 6784.3598 1.0285858e+08 0.00062156133 0.12170852 92.826294 37.938342 6786.7949 1.0239186e+08 -0.0044925295 0.12761466 92.902741 37.766341 6789.2300 98640644. -0.0096948061 0.13352079 92.999943 37.556282 6791.6650 93067577. -0.015029298 0.13942693 93.085624 37.367351 6794.1001 83219459. -0.020804826 0.14533307 93.162467 37.194253 6796.5352 78466751. -0.026465826 0.15123921 93.254201 36.980197 6798.9703 77655570. -0.031996416 0.15714535 93.330367 36.791790 6801.4054 74256687. -0.038464391 0.16305148 93.401391 36.614368 6803.8404 70469915. -0.047262431 0.16895762 93.477839 36.442365 6806.2755 61601602. -0.081061353 0.17486376 93.563129 36.246033 6808.7106 50682441. -0.066741908 0.18076990 93.648979 36.043408 6811.1457 44194912. -0.0033201093 0.18667603 93.719054 35.871406