# # 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 = 56.948172 km # Date (UTC) = 2012-01-12T10:40:43.248 # Date (julian) = 2455938.94494500 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6488.7603 1.1475625e+11 0.027543981 0.028893910 89.854485 44.114231 6491.6751 9.2698802e+10 0.038483030 0.029772870 89.974580 43.959821 6494.5900 7.7085294e+10 0.048866617 0.030651831 90.103939 43.786182 6497.5048 6.5423910e+10 0.058660916 0.031530791 90.229082 43.617240 6500.4196 5.6543088e+10 0.067815312 0.032409752 90.343474 43.462810 6503.3345 4.9940945e+10 0.076270993 0.033288712 90.454466 43.308393 6506.2493 4.4627025e+10 0.084096570 0.034167673 90.563125 43.153983 6509.1641 3.9713138e+10 0.091399615 0.035046633 90.690417 42.980938 6512.0790 3.5365963e+10 0.098327894 0.035925594 90.814193 42.811410 6514.9938 3.1537340e+10 0.10536231 0.036804554 90.922852 42.657001 6517.9086 2.8244153e+10 0.11328444 0.037683515 91.040301 42.490102 6520.8235 2.5330249e+10 0.12282824 0.038562475 91.163925 42.314633 6523.7383 2.2605449e+10 0.12952377 0.039362103 91.272580 42.165944 6526.6532 2.0354641e+10 0.13538395 0.040352840 91.379592 42.015610 6529.5680 1.8460944e+10 0.14277333 0.043140535 91.482532 41.861201 6532.4828 1.6591993e+10 0.15164781 0.047087537 91.596921 41.694903 6535.3977 1.4788427e+10 0.15971297 0.048051796 91.720899 41.518646 6538.3125 1.3125166e+10 0.16737507 0.049308846 91.823856 41.364218 6541.2273 1.1738345e+10 0.17159010 0.051252810 91.926795 41.209809 6544.1422 1.0635814e+10 0.17186235 0.051759668 92.029735 41.055400 6547.0570 9.7080493e+09 0.17005797 0.053309037 92.132675 40.900990 6549.9718 8.8609927e+09 0.16747133 0.054956646 92.235614 40.746581 6552.8867 8.0515922e+09 0.16464849 0.055363595 92.344789 40.580325 6555.8015 7.2916893e+09 0.16145434 0.054179919 92.453995 40.414009 6558.7163 6.6106856e+09 0.15857981 0.052628906 92.556934 40.259600 6561.6312 6.0638605e+09 0.15530040 0.051061659 92.657102 40.105191 6564.5460 5.6030445e+09 0.15211986 0.048524152 92.754322 39.950781 6567.4608 5.2176456e+09 0.14965958 0.046227545 92.851552 39.796355 6570.3757 4.8426539e+09 0.14761130 0.044761896 92.948786 39.641923 6573.2905 4.4732314e+09 0.14519799 0.043424364 93.059728 39.465726 6576.2053 4.1172723e+09 0.14233409 0.041135053 93.164485 39.299349 6579.1202 3.7778046e+09 0.13906274 0.037004437 93.261705 39.144940 6582.0350 3.4945375e+09 0.13630398 0.035284271 93.354869 38.994586 6584.9498 3.2537613e+09 0.13341845 0.033998100 93.446368 38.845897 6587.8647 3.0353314e+09 0.13040125 0.033349947 93.543365 38.691714 6590.7795 2.8395823e+09 0.12650272 0.029612070 93.639377 38.537305 6593.6943 2.6616085e+09 0.12251953 0.026456698 93.730876 38.382896 6596.6092 2.4713158e+09 0.11807782 0.025724504 93.828433 38.218268 6599.5240 2.2902720e+09 0.11495117 0.024961246 93.933011 38.041797 6602.4388 2.1203705e+09 0.11293966 0.027142146 94.025385 37.891250 6605.3537 1.9788428e+09 0.11040347 0.026961747 94.116885 37.741506 6608.2685 1.8631165e+09 0.10676732 0.023725272 94.208388 37.587097 6611.1833 1.7497960e+09 0.10251105 0.024841538 94.297398 37.432687 6614.0982 1.6469274e+09 0.10141493 0.023872853 94.383182 37.278278 6617.0130 1.5593826e+09 0.10008514 0.023443562 94.472894 37.123868 6619.9278 1.4753581e+09 0.099706948 0.024749788 94.564394 36.969459 6622.8427 1.3849387e+09 0.098324108 0.024533700 94.662034 36.800476 6625.7575 1.2884990e+09 0.096836112 0.026301544 94.755070 36.636878 6628.6723 1.2062536e+09 0.094963063 0.025976074 94.840866 36.482446 6631.5872 1.1368710e+09 0.093025404 0.025990411 94.926651 36.328029 6634.5020 1.0750855e+09 0.091306064 0.026363462 95.012430 36.173620 6637.4168 1.0230623e+09 0.089522702 0.025957252 95.098213 36.024426 6640.3317 9.6428417e+08 0.089285014 0.025230070 95.185997 35.871203 6643.2465 9.0891241e+08 0.088828231 0.025229839 95.284038 35.694731 6646.1614 8.5218381e+08 0.087302159 0.026003668 95.370696 35.532229 6649.0762 7.9243001e+08 0.085735288 0.027528670 95.450759 35.377820 6651.9910 7.4772549e+08 0.085077528 0.027243639 95.535883 35.228469 6654.9059 7.0844347e+08 0.083656906 0.027650324 95.620889 35.079000 6657.8207 6.6875649e+08 0.081115168 0.029853083 95.700952 34.924594 6660.7355 6.3755752e+08 0.078767586 0.032294551 95.781016 34.772400 6663.6504 6.0275993e+08 0.076627758 0.032302983 95.861080 34.623708 6666.5652 5.7299542e+08 0.075931337 0.027018729 95.948451 34.457271 6669.4800 5.4201313e+08 0.074434849 0.027862684 96.038709 34.283823 6672.3949 5.0494063e+08 0.074195375 0.027108466 96.118773 34.135134 6675.3097 4.7476187e+08 0.072378550 0.030391532 96.198836 33.984384 6678.2245 4.4618352e+08 0.070761542 0.030786441 96.278900 33.829975 6681.1394 4.2265201e+08 0.071716824 0.029764274 96.365960 33.666070 6684.0542 4.0291756e+08 0.072366577 0.032656842 96.456063 33.497400 6686.9690 3.8183045e+08 0.070966819 0.034324880 96.530411 33.342992 6689.8839 3.6094764e+08 0.068213088 0.033220406 96.606667 33.190481 6692.7987 3.4125936e+08 0.067150781 0.031837850 96.686742 33.041767 6695.7135 3.2124336e+08 0.066607807 0.029728406 96.769677 32.876825 6698.6284 3.0058445e+08 0.065502166 0.031080321 96.854374 32.701872 6701.5432 2.8408170e+08 0.063313586 0.032206474 96.934438 32.553183 6704.4580 2.7115081e+08 0.063542078 0.036402472 97.012752 32.402744 6707.3729 2.6049955e+08 0.063277197 0.040133413 97.087100 32.248335 6710.2877 2.4750211e+08 0.061956151 0.040552809 97.167367 32.085270 6713.2025 2.3173270e+08 0.059306795 0.044419154 97.252041 31.915760 6716.1174 2.1683405e+08 0.056792405 0.048574235 97.326385 31.761351 6719.0322 2.0638267e+08 0.053716653 0.051339242 97.399134 31.608537 6721.9470 2.0060687e+08 0.054020586 0.050589246 97.467762 31.459847 6724.8619 1.9007830e+08 0.049619451 0.042729472 97.545053 31.299891 6727.7767 1.7899308e+08 0.047780813 0.039925590 97.630004 31.129978 6730.6915 1.6930350e+08 0.046070182 0.041327090 97.704364 30.975552 6733.6064 1.5995625e+08 0.044392746 0.047216494 97.779739 30.817237 6736.5212 1.5243457e+08 0.046215610 0.052325468 97.858167 30.647300 6739.4360 1.4531337e+08 0.047226939 0.063360186 97.933651 30.492696 6742.3509 1.3801415e+08 0.044516385 0.069465730 98.007999 30.344006 6745.2657 1.3155997e+08 0.040204884 0.078678589 98.086317 30.174644 6748.1805 1.2400274e+08 0.036171497 0.067966757 98.160403 30.011587 6751.0954 1.1806298e+08 0.033264655 0.073751998 98.229031 29.857178 6754.0102 1.1286303e+08 0.030301148 0.076197046 98.304468 29.691987 6756.9250 1.0863670e+08 0.027013502 0.076547194 98.381289 29.525546 6759.8399 1.0475803e+08 0.028343892 0.076022632 98.449912 29.376856 6762.7547 1.0198009e+08 0.033339263 0.076833426 98.522615 29.219331 6765.6696 95477715. 0.036677824 0.079653422 98.601049 29.049396 6768.5844 88399957. 0.032879588 0.082958779 98.679482 28.879461 6771.4992 79924517. 0.027605359 0.090515965 98.754424 28.717086 6774.4141 72131276. 0.022648185 0.097585720 98.823048 28.568396 6777.3289 70011988. 0.017555066 0.10465547 98.893659 28.402834 6780.2437 66097600. 0.012529513 0.11172523 98.966060 28.226867 6783.1586 64080883. 0.0074586079 0.11879498 99.044494 28.056932 6786.0734 61881538. 0.0024068208 0.12586474 99.119349 27.886997 6788.9882 58510479. -0.0025832009 0.13293449 99.191189 27.717429 6791.9031 57257287. -0.0076406228 0.14000425 99.259812 27.568739 6794.8179 56996774. -0.012729365 0.14707400 99.329315 27.414341 6797.7327 57486449. -0.017829034 0.15414375 99.401211 27.244407 6800.6476 60256934. -0.022980599 0.16121351 99.473107 27.074472 6803.5624 58895629. -0.027932214 0.16828326 99.546367 26.904537 6806.4772 57651420. -0.032829214 0.17535302 99.624801 26.734600 6809.3921 52723791. -0.037463602 0.18242277 99.698798 26.564665 6812.3069 48029350. -0.041851879 0.18949253 99.770693 26.394730 6815.2217 47347047. -0.046399128 0.19656228 99.842589 26.224795 6818.1366 44632709. -0.047697020 0.20363203 99.914485 26.054859 6821.0514 45937991. -0.056111787 0.21070179 99.986381 25.885504 6823.9662 44429177. -0.067688487 0.21777154 100.05827 25.722105