# # 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 = 52.928245 km # Date (UTC) = 2015-12-20T10:49:21.537 # Date (julian) = 2457376.95094372 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6489.0697 5.6126011e+10 0.022108047 0.028987199 94.188367 28.140294 6491.3880 5.1550029e+10 0.028635488 0.029686284 94.243902 28.031132 6493.7063 4.7550630e+10 0.034875736 0.030385368 94.296461 27.921970 6496.0246 4.4147160e+10 0.040806966 0.031084453 94.349020 27.812808 6498.3430 4.1233605e+10 0.046385993 0.031783537 94.404783 27.700435 6500.6613 3.8580064e+10 0.051625898 0.032482622 94.461393 27.587215 6502.9796 3.6302168e+10 0.056654487 0.033181707 94.516715 27.475285 6505.2979 3.4188926e+10 0.061774081 0.033880791 94.569273 27.366122 6507.6163 3.2258905e+10 0.067376750 0.034579876 94.621832 27.256959 6509.9346 3.0386073e+10 0.073776079 0.035278961 94.674393 27.147796 6512.2529 2.8595291e+10 0.081377805 0.035978045 94.726955 27.038634 6514.5712 2.7013041e+10 0.090641405 0.036677130 94.779515 26.929472 6516.8896 2.5533253e+10 0.10181376 0.037376215 94.832074 26.820310 6519.2079 2.4150731e+10 0.11503731 0.038075299 94.884632 26.711148 6521.5262 2.2817034e+10 0.13026793 0.038774384 94.937197 26.601972 6523.8445 2.1519604e+10 0.14196343 0.039388431 94.989763 26.492795 6526.1629 2.0241382e+10 0.15264944 0.039838837 95.042327 26.381906 6528.4812 1.9005953e+10 0.16390502 0.041824215 95.094888 26.268700 6530.7995 1.7783543e+10 0.17214901 0.044948009 95.147450 26.155495 6533.1178 1.6634426e+10 0.17820151 0.047569667 95.200009 26.046136 6535.4362 1.5496408e+10 0.17904809 0.048035089 95.252567 25.936973 6537.7545 1.4391308e+10 0.17842409 0.049040935 95.303194 25.827811 6540.0728 1.3338259e+10 0.17737317 0.050888503 95.351712 25.718649 6542.3911 1.2368340e+10 0.17447594 0.051150737 95.400262 25.609487 6544.7095 1.1510973e+10 0.17249849 0.052219881 95.452814 25.500310 6547.0278 1.0705288e+10 0.17047868 0.053297933 95.505380 25.391133 6549.3461 9.9696662e+09 0.16825852 0.054319000 95.555793 25.281963 6551.6644 9.2845877e+09 0.16668851 0.055468980 95.604311 25.172801 6553.9828 8.6555849e+09 0.16439263 0.054841044 95.653065 25.063638 6556.3011 8.0660371e+09 0.16233991 0.053968860 95.705623 24.954475 6558.6194 7.5154656e+09 0.16009926 0.052711487 95.758182 24.845313 6560.9377 7.0174523e+09 0.15714914 0.051428817 95.808377 24.738515 6563.2561 6.5756647e+09 0.15459674 0.049632161 95.856895 24.633397 6565.5744 6.1682099e+09 0.15192530 0.047666172 95.905413 24.527825 6567.8927 5.7891369e+09 0.14983981 0.045862376 95.953934 24.418648 6570.2110 5.4300339e+09 0.14787793 0.044830090 96.002455 24.309471 6572.5294 5.0889344e+09 0.14552657 0.043927004 96.053556 24.200303 6574.8477 4.7743089e+09 0.14272854 0.042447864 96.106118 24.091140 6577.1660 4.4740671e+09 0.13950563 0.039959609 96.158011 23.981978 6579.4843 4.1983108e+09 0.13571063 0.036804237 96.206526 23.872815 6581.8027 3.9435961e+09 0.13246548 0.035353552 96.255040 23.763653 6584.1210 3.7084103e+09 0.12954938 0.034449606 96.303557 23.654490 6586.4393 3.5003987e+09 0.12730522 0.033165617 96.352075 23.545327 6588.7576 3.3110158e+09 0.12561087 0.033126916 96.400594 23.436161 6591.0760 3.1394968e+09 0.12324889 0.029116199 96.449118 23.326985 6593.3943 2.9791996e+09 0.12121002 0.026735657 96.497642 23.217809 6595.7126 2.8176133e+09 0.11859185 0.025697471 96.543148 23.111656 6598.0309 2.6668611e+09 0.11665245 0.025392397 96.587622 23.006536 6600.3493 2.5284649e+09 0.11606311 0.025707884 96.633195 22.900317 6602.6676 2.3976697e+09 0.11533798 0.026946946 96.681709 22.791155 6604.9859 2.2778522e+09 0.11448361 0.026656675 96.730224 22.681992 6607.3042 2.1602991e+09 0.11299206 0.025106253 96.778741 22.572830 6609.6226 2.0465286e+09 0.10984403 0.023890860 96.827259 22.463667 6611.9409 1.9438036e+09 0.10717817 0.024358452 96.874464 22.355814 6614.2592 1.8502438e+09 0.10602125 0.023761910 96.918943 22.250681 6616.5775 1.7578641e+09 0.10438904 0.023372942 96.963423 22.145548 6618.8959 1.6683000e+09 0.10349398 0.024447272 97.011341 22.036982 6621.2142 1.5845395e+09 0.10242019 0.025018456 97.059855 21.927820 6623.5325 1.5056980e+09 0.10041815 0.024689110 97.106840 21.820189 6625.8508 1.4295699e+09 0.098831517 0.026412898 97.151314 21.715069 6628.1692 1.3568953e+09 0.096718427 0.025771773 97.195788 21.609950 6630.4875 1.2921258e+09 0.094709360 0.025929503 97.243922 21.501170 6632.8058 1.2406892e+09 0.092735081 0.026128967 97.292440 21.392008 6635.1241 1.1933292e+09 0.090965332 0.026418402 97.341616 21.278907 6637.4425 1.1306968e+09 0.089612542 0.025944712 97.391657 21.160628 6639.7608 1.0660991e+09 0.089510820 0.025356156 97.440397 21.044480 6642.0791 1.0040023e+09 0.090092024 0.025154933 97.484871 20.935317 6644.3974 9.5207728e+08 0.089320924 0.025386559 97.529345 20.826154 6646.7158 9.1508775e+08 0.088339959 0.026290643 97.573819 20.720066 6649.0341 8.7735947e+08 0.087196341 0.027586717 97.618293 20.614948 6651.3524 8.4664209e+08 0.086902048 0.026754229 97.663926 20.508669 6653.6707 8.1510505e+08 0.086360189 0.027868109 97.712441 20.399506 6655.9890 7.8022252e+08 0.084603857 0.028018893 97.760956 20.290344 6658.3074 7.4550119e+08 0.083066480 0.030606212 97.810706 20.173778 6660.6257 7.0438329e+08 0.081640160 0.032194727 97.860740 20.055517 6662.9440 6.7079072e+08 0.080342365 0.032514619 97.907358 19.945330 6665.2623 6.3642342e+08 0.079736156 0.028117265 97.951838 19.840196 6667.5807 6.1018376e+08 0.079090154 0.027316748 97.995742 19.734490 6669.8990 5.8546773e+08 0.078257679 0.027432371 98.036172 19.625328 6672.2173 5.6113016e+08 0.077877834 0.027005562 98.076602 19.516165 6674.5356 5.4149149e+08 0.076535271 0.029406643 98.119736 19.409706 6676.8540 5.1816914e+08 0.074024435 0.032264103 98.164210 19.304587 6679.1723 4.9981954e+08 0.073198526 0.030125395 98.209769 19.196901 6681.4906 4.7936839e+08 0.074045075 0.030033754 98.259803 19.078639 6683.8089 4.5784551e+08 0.074229100 0.032374097 98.309814 18.960433 6686.1273 4.3316990e+08 0.073519296 0.033835131 98.354335 18.855203 6688.4456 4.1301142e+08 0.070688398 0.033888048 98.398815 18.750070 6690.7639 3.9333278e+08 0.069213614 0.033028318 98.443821 18.638061 6693.0822 3.7561324e+08 0.068344770 0.031575875 98.489305 18.519800 6695.4006 3.5926397e+08 0.067786915 0.029785894 98.534461 18.405812 6697.7189 3.4326895e+08 0.067036700 0.030182242 98.578935 18.300693 6700.0372 3.2626268e+08 0.065384987 0.030695323 98.623408 18.195574 6702.3555 3.1100410e+08 0.063840002 0.033160631 98.672619 18.079259 6704.6739 2.9581565e+08 0.064071988 0.036508457 98.722652 17.960998 6706.9922 2.8186031e+08 0.063614911 0.040173234 98.766412 17.848681 6709.3105 2.7398303e+08 0.062662973 0.040935041 98.806842 17.739518 6711.6288 2.6157240e+08 0.060411610 0.041407680 98.848182 17.628718 6713.9472 2.5166597e+08 0.057841567 0.047112313 98.893670 17.510456 6716.2655 2.4091616e+08 0.055702943 0.048792400 98.939158 17.392195 6718.5838 2.3078744e+08 0.052985679 0.050721659 98.983656 17.286818 6720.9021 2.2257235e+08 0.052599551 0.050315238 99.028136 17.181685 6723.2205 2.1389774e+08 0.051095000 0.049491900 99.073126 17.072190 6725.5388 2.0825221e+08 0.046469351 0.041239465 99.118611 16.958477 6727.8571 1.9886490e+08 0.045072173 0.039818467 99.164095 16.843355 6730.1754 1.9154804e+08 0.043356463 0.040619447 99.209580 16.725095 6732.4938 1.8115276e+08 0.041398162 0.043831109 99.254951 16.608298 6734.8121 1.7425971e+08 0.040828422 0.049304739 99.299425 16.503178 6737.1304 1.6763363e+08 0.042304387 0.054550991 99.343899 16.398058 6739.4487 1.5857672e+08 0.042464161 0.063375718 99.389018 16.284554 6741.7671 1.5125121e+08 0.040320623 0.067946391 99.434502 16.166293 6744.0854 1.4344078e+08 0.035200037 0.077859455 99.479987 16.048032 6746.4037 1.4014667e+08 0.032512762 0.074293710 99.525471 15.929770 6748.7220 1.3601483e+08 0.030069448 0.070815543 99.569740 15.814672 6751.0404 1.3471029e+08 0.027166969 0.073728735 99.610178 15.709539 6753.3587 1.3294213e+08 0.024377716 0.074138053 99.650616 15.604405 6755.6770 1.2745627e+08 0.022017577 0.074308521 99.694930 15.492684 6757.9953 1.2289820e+08 0.021013996 0.073719489 99.740414 15.378970 6760.3137 1.1213705e+08 0.021405662 0.076659400 99.785899 15.262668 6762.6320 1.0417546e+08 0.025891835 0.077031408 99.831383 15.144406 6764.9503 97381556. 0.028662321 0.079528812 99.876867 15.026145 6767.2686 90684865. 0.028005853 0.081674969 99.922352 14.907884 6769.5870 88898450. 0.023191326 0.085877885 99.967836 14.790407 6771.9053 86768711. 0.019214434 0.091500842 100.01332 14.676695 6774.2236 84685569. 0.015222585 0.097123798 100.05880 14.562982 6776.5419 83069871. 0.011215438 0.10274675 100.10429 14.444840 6778.8603 79125682. 0.0069856985 0.10836971 100.14978 14.326579 6781.1786 76003499. 0.0026972251 0.11399267 100.19174 14.208317 6783.4969 72576898. -0.0017865628 0.11961562 100.23267 14.090055 6785.8152 68343895. -0.0066254077 0.12523858 100.27623 13.974417 6788.1336 64540500. -0.011873694 0.13086154 100.32172 13.860704 6790.4519 60565433. -0.017956545 0.13648449 100.36720 13.745265 6792.7702 57097618. -0.025509308 0.14210745 100.41270 13.626986 6795.0885 52290922. -0.038126937 0.14773041 100.45842 13.506604 6797.4069 51335175. -0.086182414 0.15335336 100.50521 13.376644 6799.7252 49765978. -0.055154982 0.15897632 100.55166 13.249683 6802.0435 51344599. 0.019644486 0.16459928 100.59715 13.131422