# # 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 = 54.702592 km # Date (UTC) = 2015-01-21T09:20:52.383 # Date (julian) = 2457043.88949518 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.9206 5.9020065e+10 0.062516672 0.033465451 113.50901 43.050422 6506.5756 5.3339935e+10 0.073850687 0.034266054 113.63404 42.855939 6509.2305 4.8407945e+10 0.085552195 0.035066657 113.74633 42.681254 6511.8855 4.3669842e+10 0.097521867 0.035867259 113.85385 42.513656 6514.5405 3.9285930e+10 0.10979795 0.036667862 113.97193 42.319177 6517.1955 3.5303274e+10 0.12244306 0.037468465 114.08353 42.141171 6519.8505 3.1675108e+10 0.13549068 0.038269068 114.19069 41.974477 6522.5055 2.8887972e+10 0.14782305 0.039049612 114.29242 41.807785 6525.1604 2.6192748e+10 0.15480065 0.039763904 114.39756 41.634617 6527.8154 2.3467209e+10 0.15958587 0.041308479 114.51561 41.440176 6530.4704 2.0877629e+10 0.16348435 0.044487258 114.62030 41.267749 6533.1254 1.8560365e+10 0.16686834 0.047572874 114.72150 41.101056 6535.7804 1.6666931e+10 0.16743729 0.047885775 114.82271 40.934364 6538.4354 1.5053053e+10 0.16932990 0.049368675 114.92133 40.767672 6541.0903 1.3591103e+10 0.16964106 0.051297233 115.01658 40.600980 6543.7453 1.2162569e+10 0.16926668 0.051577506 115.12905 40.413330 6546.4003 1.0855598e+10 0.16852975 0.052793909 115.23995 40.227587 6549.0553 9.7005504e+09 0.16696721 0.054022619 115.33520 40.060895 6551.7103 8.7945144e+09 0.16526425 0.055485065 115.43046 39.894203 6554.3652 8.1114438e+09 0.16224100 0.054840045 115.52571 39.727511 6557.0202 7.5117071e+09 0.15940397 0.053853426 115.62096 39.560817 6559.6752 6.8988769e+09 0.15628666 0.052310969 115.71867 39.386477 6562.3302 6.2767943e+09 0.15313892 0.050565710 115.82286 39.191998 6564.9852 5.6925442e+09 0.15049422 0.048325115 115.91958 39.020734 6567.6402 5.2014617e+09 0.14825085 0.046075916 116.01391 38.854042 6570.2951 4.8249172e+09 0.14656828 0.044795251 116.10321 38.687348 6572.9501 4.4952990e+09 0.14461685 0.043686044 116.19251 38.523490 6575.6051 4.1950144e+09 0.14216766 0.041767595 116.28181 38.362753 6578.2601 3.9203244e+09 0.13948063 0.038238902 116.37110 38.197272 6580.9151 3.6697664e+09 0.13660334 0.035675095 116.46040 38.030578 6583.5701 3.4383812e+09 0.13439006 0.034733130 116.54970 37.863887 6586.2250 3.2156798e+09 0.13193229 0.033168387 116.63900 37.697195 6588.8800 3.0024062e+09 0.12976502 0.033086045 116.72830 37.530503 6591.5350 2.8106163e+09 0.12672689 0.028598223 116.81310 37.363809 6594.1900 2.6443840e+09 0.12357634 0.026068232 116.89690 37.197116 6596.8450 2.5011882e+09 0.11995057 0.025723432 116.98620 37.030424 6599.4999 2.3506201e+09 0.11759056 0.024959800 117.07866 36.852686 6602.1549 2.1959506e+09 0.11651912 0.027384421 117.17590 36.658206 6604.8099 2.0435121e+09 0.11458640 0.026552176 117.25983 36.490340 6607.4649 1.9099137e+09 0.11200174 0.024789000 117.34317 36.323655 6610.1199 1.8009484e+09 0.10756081 0.024117520 117.42650 36.156991 6612.7749 1.6960090e+09 0.10483908 0.023741806 117.50984 35.993871 6615.4298 1.6001624e+09 0.10323679 0.023264757 117.59319 35.833131 6618.0848 1.5056693e+09 0.10254840 0.023834850 117.67654 35.666926 6620.7398 1.4196728e+09 0.10197397 0.025005600 117.75988 35.500234 6623.3948 1.3397829e+09 0.10046657 0.024638090 117.84323 35.333540 6626.0498 1.2637002e+09 0.099175840 0.026527489 117.92325 35.166847 6628.7048 1.1926521e+09 0.097457172 0.025989233 118.00064 35.000155 6631.3597 1.1233454e+09 0.095714050 0.025967308 118.07804 34.838696 6634.0147 1.0604666e+09 0.094110933 0.026327916 118.15661 34.676771 6636.6697 1.0019894e+09 0.092529571 0.026289680 118.23996 34.510079 6639.3247 9.4712827e+08 0.091578498 0.025512025 118.32021 34.343387 6641.9797 8.9697898e+08 0.092034303 0.025151627 118.39761 34.176694 6644.6346 8.5146769e+08 0.090796110 0.025412198 118.47500 34.010001 6647.2896 8.0715230e+08 0.089334923 0.026590272 118.55239 33.844261 6649.9446 7.6401341e+08 0.088193134 0.026331583 118.62978 33.683521 6652.5996 7.1979105e+08 0.087415562 0.027415494 118.70432 33.519923 6655.2546 6.7915622e+08 0.085765967 0.027715409 118.77576 33.353231 6657.9096 6.4355345e+08 0.083473415 0.029956173 118.85196 33.186540 6660.5645 6.1149715e+08 0.081330945 0.032139141 118.92936 33.020568 6663.2195 5.8211202e+08 0.079385230 0.032422377 119.00675 32.859827 6665.8745 5.5119977e+08 0.078524869 0.027114217 119.08152 32.696462 6668.5295 5.2276801e+08 0.077078103 0.027939336 119.15296 32.529770 6671.1845 4.9767751e+08 0.076601959 0.026867977 119.22440 32.367611 6673.8395 4.7501952e+08 0.075750969 0.028714685 119.29632 32.206385 6676.4944 4.5037249e+08 0.073249353 0.032032386 119.37371 32.039693 6679.1494 4.2542982e+08 0.072524082 0.030144297 119.44871 31.873000 6681.8044 4.0036510e+08 0.073875833 0.030274484 119.52015 31.706307 6684.4594 3.8509882e+08 0.074156723 0.032677404 119.59160 31.543914 6687.1144 3.7242779e+08 0.072423457 0.034279116 119.66304 31.382922 6689.7694 3.5584494e+08 0.069714198 0.033323486 119.73447 31.216230 6692.4243 3.4135673e+08 0.068549408 0.032272577 119.80375 31.051696 6695.0793 3.2215881e+08 0.067902862 0.029844905 119.86924 30.890957 6697.7343 3.0439663e+08 0.067171487 0.030184192 119.93879 30.726152 6700.3893 2.8567946e+08 0.065267734 0.030956458 120.01023 30.559492 6703.0443 2.6870045e+08 0.064455080 0.033785992 120.08167 30.398741 6705.6992 2.5824028e+08 0.064478196 0.037911721 120.15118 30.236076 6708.3542 2.5031803e+08 0.063916687 0.040429318 120.21667 30.069384 6711.0092 2.3730942e+08 0.062047237 0.040702710 120.29366 29.889273 6713.6642 2.2245329e+08 0.059486283 0.046088862 120.37336 29.707204 6716.3192 2.1010289e+08 0.057256190 0.048871474 120.43885 29.546465 6718.9742 2.0075004e+08 0.054381693 0.051329589 120.50433 29.382605 6721.6291 1.9448027e+08 0.054725541 0.050493461 120.56982 29.215914 6724.2841 1.8291586e+08 0.051966920 0.047554068 120.64033 29.054249 6726.9391 1.7474141e+08 0.048426582 0.040959837 120.71079 28.893510 6729.5941 1.6667780e+08 0.047752014 0.040649454 120.77628 28.732771 6732.2491 1.5948577e+08 0.045955658 0.043786062 120.84176 28.569144 6734.9041 1.5442548e+08 0.046006367 0.049299205 120.90725 28.402451 6737.5590 1.4687309e+08 0.048277114 0.055916378 120.97274 28.240553 6740.2140 1.3876556e+08 0.048539777 0.064415970 121.03872 28.076453 6742.8690 1.3113322e+08 0.045259597 0.070728228 121.10816 27.888956 6745.5240 1.2321024e+08 0.042089766 0.078787163 121.17489 27.719803 6748.1790 1.1910771e+08 0.038180671 0.067958427 121.24038 27.559023 6750.8339 1.1357590e+08 0.035695802 0.073428125 121.30587 27.392338 6753.4889 1.0700489e+08 0.033028985 0.074559547 121.36941 27.227587 6756.1439 1.0051327e+08 0.030632346 0.074537210 121.42894 27.066847 6758.7989 94839101. 0.030963141 0.075394685 121.49938 26.888788 6761.4539 92753251. 0.033245763 0.078005724 121.57230 26.706790 6764.1089 89938457. 0.038544408 0.079488501 121.63183 26.546051 6766.7638 88084369. 0.039797151 0.081441565 121.69450 26.385312 6769.4188 81995732. 0.034875457 0.085470087 121.75999 26.224574 6772.0738 76478076. 0.030661883 0.091909587 121.82043 26.063835 6774.7288 73902277. 0.026265856 0.098349086 121.88163 25.898611 6777.3838 73232800. 0.021729030 0.10478859 121.95108 25.711076 6780.0388 73946816. 0.017086144 0.11122809 122.01332 25.538706 6782.6937 70498108. 0.012838633 0.11766758 122.07285 25.372298 6785.3487 66067251. 0.0087895019 0.12410708 122.13238 25.211560 6788.0037 60879692. 0.0050319377 0.13054658 122.19557 25.040956 6790.6587 59185165. 0.0010342242 0.13698608 122.26503 24.853422 6793.3137 59087540. -0.0029671759 0.14342558 122.32527 24.690765 6795.9686 60029054. -0.0067978352 0.14986508 122.38728 24.523362 6798.6236 55600537. -0.0087533782 0.15630458 122.45673 24.335827 6801.2786 51777329. -0.0087176763 0.16274408 122.51816 24.169970 6803.9336 45364571. 0.016098983 0.16918358 122.57897 24.006672 6806.5886 42169702. -0.0096095301 0.17562308 122.64842 23.826118 6809.2436 43574316. -0.067210890 0.18206258 122.71103 23.659220