# # 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 = 51.034878 km # Date (UTC) = 2014-11-23T09:59:35.128 # Date (julian) = 2456984.91637879 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6490.6708 2.4410148e+11 0.024457224 0.029470006 -22.390992 60.776800 6492.8956 1.9597075e+11 0.032585020 0.030140905 -22.591599 60.678253 6495.1205 1.5757567e+11 0.040427496 0.030811804 -22.806119 60.568498 6497.3453 1.2658198e+11 0.047875933 0.031482702 -23.008926 60.462255 6499.5702 1.0345132e+11 0.054719563 0.032153601 -23.192289 60.361843 6501.7950 8.7419917e+10 0.060883376 0.032824500 -23.375649 60.261804 6504.0199 7.6694563e+10 0.066588370 0.033495399 -23.558984 60.165770 6506.2448 6.8561230e+10 0.072247174 0.034166298 -23.742320 60.069737 6508.4696 6.1327106e+10 0.078144320 0.034837197 -23.942503 59.962804 6510.6945 5.4600612e+10 0.084501831 0.035508095 -24.147044 59.853052 6512.9193 4.8536780e+10 0.091593122 0.036178994 -24.327936 59.750688 6515.1442 4.3762311e+10 0.099984068 0.036849893 -24.502540 59.650289 6517.3690 4.0285560e+10 0.11020175 0.037520792 -24.677145 59.552069 6519.5939 3.7342292e+10 0.12218533 0.038191691 -24.851750 59.456038 6521.8187 3.4601596e+10 0.13579517 0.038862589 -25.030511 59.356110 6524.0436 3.1759526e+10 0.14475358 0.039442443 -25.225074 59.241368 6526.2684 2.9013832e+10 0.15336786 0.039949513 -25.414682 59.129547 6528.4933 2.6437367e+10 0.16241532 0.041833813 -25.584923 59.029148 6530.7181 2.4192751e+10 0.16916910 0.044834088 -25.755164 58.928748 6532.9430 2.2310549e+10 0.17416833 0.047471969 -25.921418 58.832336 6535.1679 2.0598474e+10 0.17493794 0.048151482 -26.087292 58.736305 6537.3927 1.8922608e+10 0.17367528 0.048870370 -26.264805 58.628636 6539.6176 1.7295718e+10 0.17241582 0.050391171 -26.449391 58.513893 6541.8424 1.5799975e+10 0.17005401 0.051053341 -26.619728 58.408008 6544.0673 1.4497718e+10 0.16775893 0.051698918 -26.781238 58.307610 6546.2921 1.3422900e+10 0.16586477 0.052704897 -26.941321 58.207212 6548.5170 1.2505769e+10 0.16446527 0.053822033 -27.098466 58.106813 6550.7418 1.1620347e+10 0.16304324 0.055171108 -27.256412 58.005724 6552.9667 1.0696889e+10 0.16195099 0.055343452 -27.436010 57.885993 6555.1915 9.7928892e+09 0.16042657 0.054692426 -27.614771 57.766866 6557.4164 8.9622085e+09 0.15869320 0.053605110 -27.767549 57.666468 6559.6412 8.2968439e+09 0.15666194 0.052314802 -27.920328 57.566071 6561.8661 7.7588621e+09 0.15445691 0.050945885 -28.069876 57.465673 6564.0910 7.2636912e+09 0.15196036 0.048730376 -28.218290 57.365275 6566.3158 6.8049863e+09 0.15025659 0.047004232 -28.366714 57.262908 6568.5407 6.4051567e+09 0.14877772 0.045274664 -28.515151 57.158129 6570.7655 6.0070609e+09 0.14742305 0.044600406 -28.666953 57.051766 6572.9904 5.5992094e+09 0.14585289 0.043662996 -28.836573 56.937024 6575.2152 5.2152212e+09 0.14375216 0.042158769 -29.002244 56.823822 6577.4401 4.8669347e+09 0.14114337 0.039529114 -29.146293 56.719058 6579.6649 4.5852123e+09 0.13820493 0.036704954 -29.290343 56.614295 6581.8898 4.3369103e+09 0.13570471 0.035327169 -29.434391 56.513301 6584.1146 4.0981948e+09 0.13353792 0.034453062 -29.578440 56.412904 6586.3395 3.8774765e+09 0.13187908 0.033166908 -29.719990 56.310007 6588.5643 3.6796825e+09 0.13054257 0.033191464 -29.859674 56.205244 6590.7892 3.4885262e+09 0.12847622 0.029594025 -30.004982 56.097670 6593.0141 3.2880115e+09 0.12668789 0.027089152 -30.164624 55.982928 6595.2389 3.0842391e+09 0.12456007 0.025648347 -30.317523 55.870952 6597.4638 2.8956273e+09 0.12250677 0.025576380 -30.452841 55.766188 6599.6886 2.7377072e+09 0.12152506 0.024971147 -30.588160 55.661424 6601.9135 2.6197633e+09 0.12118687 0.027475884 -30.719173 55.556661 6604.1383 2.4763730e+09 0.11985509 0.026153411 -30.850126 55.451897 6606.3632 2.3416720e+09 0.11940561 0.026851338 -30.984116 55.347135 6608.5880 2.2172927e+09 0.11671915 0.023716824 -31.119435 55.242373 6610.8129 2.1052701e+09 0.11354079 0.024779676 -31.252988 55.137610 6613.0377 2.0322267e+09 0.11199589 0.023587439 -31.383941 55.032846 6615.2626 1.9291156e+09 0.11045822 0.023259611 -31.516456 54.926380 6617.4875 1.8193392e+09 0.10914753 0.023600862 -31.661132 54.806650 6619.7123 1.7145448e+09 0.10826873 0.024697782 -31.803832 54.688555 6621.9372 1.6171840e+09 0.10683144 0.024778821 -31.930421 54.583791 6624.1620 1.5441110e+09 0.10447213 0.024949035 -32.057010 54.479027 6626.3869 1.4798470e+09 0.10247244 0.026097999 -32.183613 54.374252 6628.6117 1.4187939e+09 0.10039852 0.025951460 -32.310219 54.269474 6630.8366 1.3631437e+09 0.098304599 0.025930363 -32.434513 54.164704 6633.0614 1.3120338e+09 0.096748876 0.026162978 -32.556737 54.059940 6635.2863 1.2565992e+09 0.095285577 0.026442720 -32.683099 53.951631 6637.5111 1.1941800e+09 0.094126296 0.025911072 -32.822785 53.831900 6639.7360 1.1237511e+09 0.093946241 0.025365015 -32.957397 53.715649 6641.9608 1.0581428e+09 0.094399540 0.025151563 -33.075256 53.610884 6644.1857 1.0075000e+09 0.093429847 0.025363676 -33.193116 53.506120 6646.4106 9.6969619e+08 0.092318590 0.026132663 -33.310974 53.401357 6648.6354 9.3422943e+08 0.091046274 0.027389628 -33.428832 53.296593 6650.8603 8.9308907e+08 0.090449367 0.026452175 -33.557648 53.178844 6653.0851 8.4738420e+08 0.089991857 0.027569118 -33.692346 53.054124 6655.3100 8.0329360e+08 0.088511211 0.027738296 -33.813341 52.942300 6657.5348 7.6494116e+08 0.086606307 0.029521489 -33.926834 52.837539 6659.7597 7.2883279e+08 0.084971578 0.031676129 -34.040326 52.732776 6661.9845 6.9906816e+08 0.083227037 0.033036393 -34.153819 52.628012 6664.2094 6.6746878e+08 0.081759624 0.031439957 -34.267312 52.522966 6666.4342 6.3354014e+08 0.081545311 0.026993212 -34.380806 52.413838 6668.6591 6.0626838e+08 0.080184876 0.028054025 -34.494300 52.304710 6670.8839 5.8284525e+08 0.079752805 0.026919114 -34.616478 52.187381 6673.1088 5.5750253e+08 0.079053117 0.027621937 -34.741199 52.067650 6675.3337 5.3124870e+08 0.076962378 0.030437429 -34.853927 51.959431 6677.5585 5.0479679e+08 0.074991657 0.031564239 -34.963055 51.854667 6679.7834 4.8431384e+08 0.074751769 0.029620435 -35.072183 51.747816 6682.0082 4.6789626e+08 0.075451938 0.030430821 -35.181311 51.638688 6684.2331 4.5315849e+08 0.075611249 0.032665919 -35.292425 51.527575 6686.4579 4.3753137e+08 0.074640772 0.034027512 -35.412156 51.407843 6688.6828 4.1999850e+08 0.071885977 0.033942799 -35.529151 51.290051 6690.9076 3.9694503e+08 0.070775819 0.033011848 -35.633915 51.180923 6693.1325 3.7504027e+08 0.070024715 0.031558638 -35.738678 51.071795 6695.3573 3.5864546e+08 0.069549225 0.029793835 -35.856793 50.953208 6697.5822 3.4969540e+08 0.068804726 0.030164943 -35.976525 50.833476 6699.8070 3.3700527e+08 0.067282364 0.030845757 -36.079112 50.723140 6702.0319 3.2129243e+08 0.065552827 0.032902205 -36.179525 50.613996 6704.2568 3.0869025e+08 0.065914370 0.036303634 -36.279928 50.507467 6706.4816 2.9343609e+08 0.065806622 0.039284610 -36.380326 50.402705 6708.7065 2.8292748e+08 0.065235899 0.040812893 -36.485113 50.291836 6710.9313 2.6823242e+08 0.063602552 0.040678789 -36.599857 50.167115 6713.1562 2.5462136e+08 0.061525971 0.044251468 -36.708958 50.048411 6715.3810 2.4701219e+08 0.059409126 0.047768292 -36.804991 49.943648 6717.6059 2.3740697e+08 0.057215983 0.049836792 -36.901245 49.838649 6719.8307 2.2810820e+08 0.055647187 0.050580581 -37.015966 49.713951 6722.0556 2.2020769e+08 0.055607125 0.050536482 -37.130544 49.589368 6724.2804 2.1048014e+08 0.052797066 0.047584785 -37.226625 49.480199 6726.5053 2.0223994e+08 0.049376643 0.040955925 -37.322656 49.371071 6728.7302 1.9494942e+08 0.048768414 0.040662962 -37.424936 49.254358 6730.9550 1.8273205e+08 0.047037512 0.041688331 -37.529702 49.134626 6733.1799 1.7115509e+08 0.045843024 0.044900811 -37.628260 49.022431 6735.4047 1.6073563e+08 0.046423008 0.049723065 -37.724292 48.913302 6737.6296 1.5199636e+08 0.047926716 0.056141065 -37.823992 48.797626 6739.8544 1.5146325e+08 0.047794777 0.063872200 -37.928759 48.672906 6742.0793 1.5101890e+08 0.045316752 0.068803918 -38.033524 48.550259 6744.3041 1.4524528e+08 0.040544153 0.078028648 -38.138289 48.430528 6746.5290 1.3844391e+08 0.037305819 0.072837265 -38.235878 48.315155 6748.7538 1.3086371e+08 0.035222007 0.070982859 -38.323180 48.206027 6750.9787 1.2599945e+08 0.032066873 0.073675284 -38.412579 48.095027 6753.2035 1.2068737e+08 0.028880892 0.073635997 -38.517344 47.970307 6755.4284 1.1341939e+08 0.026405204 0.074417520 -38.620091 47.847893 6757.6533 1.0941076e+08 0.024414633 0.074757609 -38.707394 47.743128 6759.8781 1.0948397e+08 0.024855886 0.076031856 -38.794697 47.638364 6762.1030 1.0754376e+08 0.028262104 0.077884761 -38.892285 47.517142 6764.3278 1.0206936e+08 0.030840758 0.079498990 -38.992060 47.392422 6766.5527 93851699. 0.031134638 0.080963893 -39.087745 47.267702 6768.7775 88528422. 0.026217886 0.083653734 -39.182534 47.142981 6771.0024 85447643. 0.021499390 0.089310904 -39.281391 47.022331 6773.2272 83012401. 0.016927451 0.094707153 -39.381168 46.902601 6775.4521 79602399. 0.012226481 0.10010340 -39.467283 46.791472 6777.6769 75932703. 0.0073696063 0.10549965 -39.550220 46.682344 6779.9018 75272146. 0.0025803842 0.11089590 -39.639323 46.565102 6782.1266 66683991. -0.0036259048 0.11629215 -39.734111 46.440381 6784.3515 65893705. -0.0098376794 0.12168840 -39.828899 46.315660 6786.5764 61270667. -0.020124845 0.12708465 -39.923687 46.190940 6788.8012 58316985. -0.059593055 0.13248090 -40.015924 46.068770 6791.0261 57919282. -0.032728537 0.13787715 -40.105723 45.949038 6793.2509 51483249. 0.030422462 0.14327339 -40.195522 45.826777