# # 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 = 46.570716 km # Date (UTC) = 2010-12-08T05:26:51.034 # Date (julian) = 2455538.72697956 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6510.2122 8.5732280e+10 0.098125380 0.035362658 169.83017 34.826588 6512.6927 7.1912479e+10 0.10958837 0.036110669 169.89671 34.707929 6515.1733 6.1513721e+10 0.12134767 0.036858680 169.96161 34.591111 6517.6539 5.3362250e+10 0.13340651 0.037606692 170.03107 34.463350 6520.1345 4.6482358e+10 0.14570258 0.038354703 170.10407 34.327077 6522.6150 4.0577295e+10 0.15654957 0.039078306 170.17295 34.200691 6525.0956 3.5815828e+10 0.16296909 0.039771303 170.23783 34.083890 6527.5762 3.1973400e+10 0.16731349 0.041134792 170.30527 33.964224 6530.0568 2.8519455e+10 0.17136976 0.043908168 170.38314 33.832819 6532.5373 2.5376443e+10 0.17394207 0.047133085 170.45856 33.703479 6535.0179 2.2719053e+10 0.17534285 0.048216523 170.51913 33.586677 6537.4985 2.0541444e+10 0.17545981 0.048920244 170.57969 33.469875 6539.9791 1.8644443e+10 0.17606726 0.050828769 170.65059 33.340938 6542.4596 1.6849022e+10 0.17443703 0.051176746 170.72361 33.209513 6544.9402 1.5250147e+10 0.17358839 0.052407075 170.79032 33.089427 6547.4208 1.3959172e+10 0.17166201 0.053447387 170.85521 32.972624 6549.9014 1.2810991e+10 0.16956944 0.054884854 170.92160 32.849048 6552.3820 1.1723592e+10 0.16621769 0.055490629 170.98974 32.717643 6554.8625 1.0693666e+10 0.16227822 0.054850480 171.05655 32.592212 6557.3431 9.8197439e+09 0.15807468 0.053651048 171.12143 32.475410 6559.8237 9.0707982e+09 0.15415140 0.052294211 171.18664 32.357183 6562.3043 8.3443213e+09 0.15064028 0.050590391 171.25478 32.225778 6564.7848 7.6478661e+09 0.14756456 0.048415910 171.32260 32.094997 6567.2654 7.0229751e+09 0.14504328 0.046392776 171.38317 31.978180 6569.7460 6.5162421e+09 0.14291628 0.044900977 171.44374 31.861363 6572.2266 6.0595871e+09 0.14077396 0.044100409 171.50985 31.733875 6574.7071 5.6015372e+09 0.13819354 0.042515368 171.57798 31.602470 6577.1877 5.1773747e+09 0.13546122 0.039925517 171.64100 31.480948 6579.6683 4.8113173e+09 0.13231450 0.036703108 171.70156 31.364146 6582.1489 4.4856230e+09 0.12952492 0.035253284 171.76489 31.243789 6584.6294 4.1540673e+09 0.12691974 0.034172629 171.83302 31.117251 6587.1100 3.8338712e+09 0.12443870 0.033182746 171.89881 30.993735 6589.5906 3.5632263e+09 0.12173616 0.031874287 171.95937 30.876933 6592.0712 3.3318759e+09 0.11835416 0.028004396 172.01995 30.760060 6594.5517 3.1097794e+09 0.11498404 0.025869640 172.08320 30.628741 6597.0323 2.8803100e+09 0.11140784 0.025712526 172.14646 30.497336 6599.5129 2.6722456e+09 0.10900995 0.024960579 172.20718 30.379704 6601.9935 2.4998566e+09 0.10772551 0.027513562 172.26776 30.262885 6604.4741 2.3457810e+09 0.10532788 0.026352754 172.33004 30.136836 6606.9546 2.1902789e+09 0.10326317 0.025788522 172.39331 30.005432 6609.4352 2.0386963e+09 0.099024566 0.023835208 172.45251 29.884971 6611.9158 1.9117812e+09 0.095675578 0.024374457 172.50875 29.772495 6614.3964 1.7975008e+09 0.094449555 0.023667416 172.56687 29.654972 6616.8769 1.6889645e+09 0.093184466 0.023419934 172.63013 29.523568 6619.3575 1.5777821e+09 0.092842140 0.024612176 172.69340 29.392163 6621.8381 1.4592803e+09 0.092155344 0.024811659 172.75667 29.260757 6624.3187 1.3559482e+09 0.090588624 0.025032889 172.81884 29.131644 6626.7992 1.2689282e+09 0.089009227 0.025572596 172.87508 29.014826 6629.2798 1.1981435e+09 0.087865618 0.026058513 172.93133 28.898008 6631.7604 1.1295654e+09 0.086173254 0.026008006 172.99352 28.772970 6634.2410 1.0559927e+09 0.084772950 0.026344420 173.05679 28.646433 6636.7215 9.8862815e+08 0.083335141 0.026269547 173.11449 28.527597 6639.2021 9.3141226e+08 0.082387433 0.025555832 173.17073 28.410794 6641.6827 8.8372925e+08 0.082958759 0.025150619 173.22800 28.289323 6644.1633 8.3890477e+08 0.081878736 0.025361253 173.28641 28.162784 6646.6439 7.8877607e+08 0.080720666 0.026253425 173.34688 28.034179 6649.1244 7.3606821e+08 0.079426163 0.027462171 173.41015 27.902774 6651.6050 6.9187890e+08 0.078961619 0.026947813 173.46921 27.776773 6654.0856 6.5169989e+08 0.078112184 0.027999768 173.52113 27.659971 6656.5662 6.1886593e+08 0.075924823 0.028520329 173.57371 27.542599 6659.0467 5.8461991e+08 0.073982647 0.031824850 173.63697 27.416062 6661.5273 5.4695945e+08 0.072376559 0.032803519 173.70020 27.289490 6664.0079 5.1178638e+08 0.070715252 0.032177238 173.75863 27.158081 6666.4885 4.7751345e+08 0.070780176 0.027003778 173.81705 27.026656 6668.9690 4.4965873e+08 0.069619608 0.028328303 173.86929 26.913220 6671.4496 4.2609162e+08 0.069953017 0.026871756 173.92120 26.800744 6673.9302 4.0299319e+08 0.069467069 0.028850385 173.97725 26.679299 6676.4108 3.8529930e+08 0.067211535 0.031978460 174.03565 26.552761 6678.8913 3.6417058e+08 0.066456849 0.030340446 174.09405 26.423386 6681.3719 3.4190089e+08 0.067818899 0.029942689 174.15245 26.291981 6683.8525 3.2555254e+08 0.068415156 0.032437922 174.21085 26.163147 6686.3331 3.0257917e+08 0.067798611 0.033954870 174.26926 26.036608 6688.8136 2.8625468e+08 0.064845073 0.033973008 174.32459 25.914681 6691.2942 2.7230229e+08 0.063792105 0.032931845 174.37650 25.797879 6693.7748 2.5945827e+08 0.062842768 0.031338284 174.42946 25.679497 6696.2554 2.5042985e+08 0.062662546 0.029781889 174.48787 25.552941 6698.7360 2.3810995e+08 0.061553346 0.031227996 174.54575 25.426386 6701.2165 2.2647104e+08 0.059642348 0.031727155 174.59929 25.299848 6703.6971 2.1477903e+08 0.059641546 0.035419614 174.65308 25.173310 6706.1777 2.0109991e+08 0.059767991 0.038755645 174.71149 25.046772 6708.6583 1.8746568e+08 0.059356852 0.040760398 174.76988 24.920215 6711.1388 1.7439950e+08 0.057627844 0.040850187 174.82344 24.788837 6713.6194 1.6367356e+08 0.055327818 0.045926897 174.87698 24.657432 6716.1000 1.5650675e+08 0.053312033 0.048548630 174.93510 24.530618 6718.5806 1.4711248e+08 0.050846282 0.050716596 174.99350 24.404080 6721.0611 1.3988390e+08 0.050926687 0.050322320 175.04229 24.290039 6723.5417 1.3500973e+08 0.049518019 0.049671068 175.08988 24.177563 6726.0223 1.2992764e+08 0.045426255 0.040951569 175.14090 24.056972 6728.5029 1.2752266e+08 0.044834397 0.040340828 175.19443 23.930435 6730.9834 1.2111054e+08 0.043226647 0.041727325 175.24797 23.803897 6733.4640 1.1431114e+08 0.042043030 0.046443608 175.30150 23.677358 6735.9446 1.0968359e+08 0.043473662 0.050296191 175.35732 23.548535 6738.4252 1.0336677e+08 0.044981041 0.059661863 175.41573 23.417110 6740.9057 98234995. 0.044247247 0.065597679 175.47528 23.280233 6743.3863 92119969. 0.040069908 0.073653580 175.53647 23.135615 6745.8669 87599840. 0.037807762 0.078931325 175.59295 23.002124 6748.3475 84018538. 0.033806443 0.068844992 175.64648 22.875586 6750.8281 80836746. 0.031098579 0.073418067 175.70002 22.749048 6753.3086 75983647. 0.028284868 0.073976074 175.75355 22.622510 6755.7892 69920549. 0.025946052 0.074259328 175.80463 22.495972 6758.2698 66417111. 0.025310557 0.074275814 175.85330 22.369433 6760.7504 66656362. 0.025926793 0.077492171 175.90416 22.242895 6763.2309 64176252. 0.031532056 0.077141083 175.95770 22.116358 6765.7115 62068906. 0.034096436 0.079661082 176.01124 21.989821 6768.1921 59165774. 0.031123566 0.081547203 176.06477 21.863283 6770.6727 57288682. 0.026158051 0.088511207 176.11664 21.736745 6773.1532 60926194. 0.021391228 0.094527695 176.16531 21.610207 6775.6338 56834075. 0.015284859 0.10054418 176.21756 21.480075 6778.1144 52587419. 0.012301546 0.10656067 176.27875 21.341020 6780.5950 45996393. 0.011584302 0.11257716 176.33619 21.208088