# # 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 = 50.285567 km # Date (UTC) = 2015-12-03T08:55:50.036 # Date (julian) = 2457359.87210689 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6498.8169 7.7848687e+10 0.040876571 0.031926449 122.45934 26.288211 6501.3921 7.0510779e+10 0.050631271 0.032702996 122.51960 26.149322 6503.9673 6.3715098e+10 0.060643076 0.033479542 122.57799 26.023556 6506.5425 5.7566310e+10 0.071000349 0.034256089 122.63638 25.897789 6509.1177 5.2062559e+10 0.081762745 0.035032636 122.69688 25.757292 6511.6929 4.6926038e+10 0.092959795 0.035809183 122.75751 25.615823 6514.2681 4.2144207e+10 0.10464200 0.036585730 122.81167 25.489426 6516.8433 3.8205594e+10 0.11705068 0.037362276 122.86557 25.363676 6519.4186 3.5036201e+10 0.13029661 0.038138823 122.91946 25.237927 6521.9938 3.2092609e+10 0.14418612 0.038915370 122.97335 25.112178 6524.5690 2.9228506e+10 0.15172274 0.039629089 123.03065 24.981035 6527.1442 2.6362780e+10 0.15822445 0.040821143 123.09128 24.844618 6529.7194 2.3695257e+10 0.16349219 0.043381698 123.14601 24.713807 6532.2946 2.1406892e+10 0.16836336 0.046930290 123.19542 24.588040 6534.8698 1.9372367e+10 0.17153217 0.048187874 123.24819 24.457564 6537.4450 1.7478757e+10 0.17330573 0.048895026 123.30882 24.316093 6540.0202 1.5710772e+10 0.17504023 0.050863650 123.36728 24.179665 6542.5954 1.4191199e+10 0.17367481 0.051228292 123.42118 24.053917 6545.1706 1.2912064e+10 0.17205310 0.052457096 123.47523 23.927164 6547.7458 1.1708652e+10 0.16925616 0.053570990 123.53081 23.790746 6550.3210 1.0578259e+10 0.16654900 0.055065745 123.58619 23.655554 6552.8962 9.5580067e+09 0.16397934 0.055361182 123.64008 23.529804 6555.4715 8.7271638e+09 0.16112772 0.054457232 123.69397 23.404054 6558.0467 8.0552715e+09 0.15837023 0.053199545 123.74388 23.278291 6560.6219 7.4398886e+09 0.15490973 0.051713617 123.79329 23.152525 6563.1971 6.8403407e+09 0.15178937 0.049700399 123.84678 23.019709 6565.7723 6.2586881e+09 0.14883085 0.047441463 123.90236 22.883291 6568.3475 5.7291580e+09 0.14682279 0.045452239 123.95679 22.754156 6570.9227 5.2911595e+09 0.14482759 0.044535298 124.01068 22.628406 6573.4979 4.9011770e+09 0.14254504 0.043257928 124.06534 22.497792 6576.0731 4.5318304e+09 0.13981824 0.041287245 124.12092 22.361375 6578.6483 4.1759174e+09 0.13681381 0.037625850 124.17356 22.230044 6581.2235 3.8560226e+09 0.13387843 0.035528924 124.22296 22.104295 6583.7987 3.6036770e+09 0.13111882 0.034617386 124.27236 21.979665 6586.3739 3.3842743e+09 0.12820977 0.033166462 124.32177 21.858390 6588.9491 3.1839333e+09 0.12533453 0.033062961 124.37132 21.736755 6591.5243 2.9641299e+09 0.12183449 0.028610243 124.42690 21.600337 6594.0996 2.7462699e+09 0.11832974 0.026117873 124.48220 21.464395 6596.6748 2.5550850e+09 0.11435457 0.025724206 124.53160 21.338646 6599.2500 2.3912771e+09 0.11119279 0.024944765 124.58100 21.212897 6601.8252 2.2409818e+09 0.10985322 0.027434301 124.63132 21.078422 6604.4004 2.0851576e+09 0.10771155 0.026309011 124.68185 20.942004 6606.9756 1.9435340e+09 0.10645998 0.025750858 124.73144 20.818301 6609.5508 1.8195075e+09 0.10317511 0.023869544 124.78084 20.697042 6612.1260 1.7097864e+09 0.10076412 0.024226606 124.83402 20.563413 6614.7012 1.5985617e+09 0.099961398 0.023457385 124.88960 20.421944 6617.2764 1.4960001e+09 0.098820310 0.023530895 124.93843 20.293254 6619.8516 1.4107731e+09 0.098369431 0.024731397 124.98334 20.171980 6622.4268 1.3283527e+09 0.097113985 0.024644384 125.03259 20.044550 6625.0020 1.2485874e+09 0.095609308 0.025400038 125.08817 19.908132 6627.5772 1.1679669e+09 0.093665431 0.025539792 125.13919 19.778191 6630.1525 1.0992891e+09 0.092287878 0.025928677 125.18410 19.656933 6632.7277 1.0415810e+09 0.090453601 0.026119597 125.23115 19.532634 6635.3029 9.8255502e+08 0.088744230 0.026445207 125.28673 19.396217 6637.8781 9.2549357e+08 0.087274605 0.025731358 125.33994 19.262161 6640.4533 8.7495773e+08 0.087096319 0.025215192 125.38485 19.136411 6643.0285 8.2960257e+08 0.086652022 0.025196920 125.42979 19.010639 6645.6037 7.8536409e+08 0.085186100 0.025734493 125.48529 18.874279 6648.1789 7.4017266e+08 0.083756740 0.027084042 125.54071 18.738081 6650.7541 6.9504213e+08 0.082758462 0.026427874 125.58562 18.616823 6653.3293 6.5698062e+08 0.081954015 0.027693798 125.63053 18.495565 6655.9045 6.2264719e+08 0.079758644 0.027983966 125.67987 18.362344 6658.4797 5.8730805e+08 0.077739809 0.030911888 125.73040 18.225927 6661.0549 5.5189715e+08 0.076043176 0.032562930 125.78092 18.089508 6663.6301 5.1723321e+08 0.074699067 0.032308585 125.83144 17.953090 6666.2053 4.8855438e+08 0.074796842 0.026948610 125.87731 17.832997 6668.7806 4.6368826e+08 0.073845835 0.028161511 125.92222 17.716229 6671.3558 4.4013305e+08 0.074036383 0.026870418 125.97052 17.587592 6673.9310 4.1518702e+08 0.073491718 0.028851552 126.02105 17.451174 6676.5062 3.8987290e+08 0.071171007 0.032039952 126.06807 17.324219 6679.0814 3.6950963e+08 0.070409764 0.030200519 126.11298 17.202944 6681.6566 3.5469816e+08 0.071670245 0.030161085 126.16013 17.075635 6684.2318 3.4099246e+08 0.071995900 0.032665855 126.21066 16.939219 6686.8070 3.2660776e+08 0.070614945 0.034230612 126.26118 16.802801 6689.3822 3.0937201e+08 0.067660870 0.033671972 126.31171 16.666382 6691.9574 2.9068526e+08 0.066559626 0.032775375 126.36223 16.532188 6694.5326 2.7311234e+08 0.065716747 0.030514524 126.41276 16.400822 6697.1078 2.5660033e+08 0.065219156 0.030104912 126.45863 16.274115 6699.6830 2.4246677e+08 0.063556413 0.030960182 126.49905 16.152857 6702.2582 2.2967352e+08 0.061718629 0.033082941 126.54183 16.028048 6704.8335 2.1840107e+08 0.061992557 0.036586823 126.59236 15.891631 6707.4087 2.0559475e+08 0.061505739 0.040128286 126.64288 15.756502 6709.9839 1.9612798e+08 0.060224459 0.040506756 126.69341 15.625136 6712.5591 1.8581051e+08 0.057578285 0.042867973 126.74255 15.492371 6715.1343 1.7867962e+08 0.055043863 0.047515927 126.78802 15.355933 6717.7095 1.7102364e+08 0.052468879 0.049830383 126.83500 15.219501 6720.2847 1.6070675e+08 0.051127132 0.050386779 126.88552 15.083084 6722.8599 1.5323218e+08 0.050448196 0.049542142 126.93284 14.952908 6725.4351 1.4446353e+08 0.045851491 0.041304228 126.97326 14.836141 6728.0103 1.3806621e+08 0.044676383 0.039642720 127.01460 14.717585 6730.5855 1.3309391e+08 0.042926826 0.041181726 127.06512 14.581168 6733.1607 1.2624445e+08 0.041341327 0.044796954 127.11508 14.445315 6735.7359 1.2305911e+08 0.042118750 0.050074683 127.16055 14.313949 6738.3111 1.1543106e+08 0.043500268 0.059034078 127.20603 14.181914 6740.8864 1.0954932e+08 0.042523277 0.065564539 127.25150 14.045496 6743.4616 1.0450349e+08 0.037870024 0.074161092 127.29775 13.909854 6746.0368 1.0103108e+08 0.035382399 0.078559854 127.34827 13.778489 6748.6120 1.0028811e+08 0.031421035 0.070236500 127.39792 13.647120 6751.1872 94549681. 0.028004211 0.073790811 127.44340 13.515735 6753.7624 89434793. 0.025140253 0.075444506 127.48888 13.383368 6756.3376 80523933. 0.022003657 0.075035582 127.53435 13.246951 6758.9128 73919641. 0.021977880 0.075635556 127.58247 13.107570 6761.4880 68249468. 0.023857503 0.078008544 127.64022 12.957434 6764.0632 65337699. 0.028588195 0.079486314 127.69202 12.816388 6766.6384 63880696. 0.029699965 0.081157864 127.73749 12.685023 6769.2136 62580113. 0.024475590 0.084972399 127.78297 12.553657 6771.7888 60253270. 0.019679561 0.091218408 127.82844 12.422292 6774.3640 60147469. 0.014984266 0.097464417 127.87391 12.288271 6776.9392 56941518. 0.0099228087 0.10371043 127.91938 12.151853 6779.5145 55571453. 0.0047942183 0.10995643 127.96486 12.018197 6782.0897 53306748. -0.00086238268 0.11620244 128.01033 11.886831 6784.6649 52137163. -0.0072147932 0.12244845 128.05948 11.744816 6787.2401 50355717. -0.016218119 0.12869446 128.11145 11.594681 6789.8153 46275807. -0.048855308 0.13494047 128.15800 11.460230 6792.3905 45915758. -0.030700193 0.14118648 128.20348 11.328866 6794.9657 45268468. 0.013801248 0.14743249 128.24895 11.197501