================================================================================ OWLES13 WCR Level 1 Processed Data Directory Catalog ================================================================================ Last Update: 21 April 2015 ................................................................................ Directory FileDescriptors Comment Total Size File Size WCR.ExpName.YYYYMMDD...nc Antenna ID: H1: side or up beam h-pol V1: side or up beam v-pol H2: down_fore antenna V2: down antenna ................................................................................ rf01_dec07 total 5.6 GB 862M WCR.OWLES13.20131207.163926_170949.CPP-H1H2V2.nc 1017M WCR.OWLES13.20131207.170950_174540.CPP-H1H2V2.nc 716M WCR.OWLES13.20131207.174541_181054.CPP-H1H2V2.nc 547M WCR.OWLES13.20131207.181055_183011.CPP-H1H2V2.nc 999M WCR.OWLES13.20131207.183044_190556.CPP-H1H2V2.nc 778M WCR.OWLES13.20131207.190558_193322.CPP-H1H2V2.nc 726M WCR.OWLES13.20131207.193323_195857.CPP-H1H2V2.nc ................................................................................ rf02_dec10 total 5.6 GB 1.1G WCR.OWLES13.20131210.164520_172355.CPP-H1H2V2.nc 1023M WCR.OWLES13.20131210.172356_180000.CPP-H1H2V2.nc 1004M WCR.OWLES13.20131210.180001_183524.CPP-H1H2V2.nc 856M WCR.OWLES13.20131210.183525_190535.CPP-H1H2V2.nc 1.5G WCR.OWLES13.20131210.190536_195834.CPP-H1H2V2.nc 148M WCR.OWLES13.20131210.195835_200347.CPP-H1H2V2.nc ................................................................................ rf03_dec11 total 5.5 GB 1.2G WCR.OWLES13.20131211.180648_184900.CPP-H1H2V2.nc 758M WCR.OWLES13.20131211.184901_191544.CPP-H1H2V2.nc 1.0G WCR.OWLES13.20131211.191546_195151.CPP-H1H2V2.nc 678M WCR.OWLES13.20131211.195152_201545.CPP-H1H2V2.nc 874M WCR.OWLES13.20131211.201559_204647.CPP-H1H2V2.nc 978M WCR.OWLES13.20131211.204648_212115.CPP-H1H2V2.nc 113M WCR.OWLES13.20131211.212116_212515.CPP-H1H2V2.nc ................................................................................ rf04_dec12 total 5.3 GB 1.1G WCR.OWLES13.20131212.225158_233130.CPP-H1H2V2.nc 961M WCR.OWLES13.20131212.233131_000523.CPP-H1H2V2.nc 897M WCR.OWLES13.20131213.000524_003700.CPP-H1H2V2.nc 897M WCR.OWLES13.20131213.003701_010837.CPP-H1H2V2.nc 1021M WCR.OWLES13.20131213.010838_014437.CPP-H1H2V2.nc 451M WCR.OWLES13.20131213.014438_020033.CPP-H1H2V2.nc ................................................................................ rf05_dec15 total 5.0 GB 1.4G WCR.OWLES13.20131215.225944_234807.CPP-H1H2V2.nc 1023M WCR.OWLES13.20131215.234808_002411.CPP-H1H2V2.nc 934M WCR.OWLES13.20131216.002413_005708.CPP-H1H2V2.nc 483M WCR.OWLES13.20131216.005709_011410.CPP-H1H2V2.nc 875M WCR.OWLES13.20131216.011412_014501.CPP-H1H2V2.nc 340M WCR.OWLES13.20131216.014502_015700.CPP-H1H2V2.nc ................................................................................ rf06_jan06 total 5.1 GB 891M WCR.OWLES13.20140106.182857_190021.CPP-H1H2V2.nc 442M WCR.OWLES13.20140106.190022_191556.CPP-H1H2V2.nc 721M WCR.OWLES13.20140106.191557_194121.CPP-H1H2V2.nc 713M WCR.OWLES13.20140106.194235_200741.CPP-H1H2V2.nc 1.2G WCR.OWLES13.20140106.200742_204835.CPP-H1H2V2.nc 834M WCR.OWLES13.20140106.204836_211800.CPP-H1H2V2.nc 401M WCR.OWLES13.20140106.211801_213209.CPP-H1H2V2.nc ................................................................................ rf07_jan07 total 5.7 GB 722M WCR.OWLES13.20140107.131818_134345.CPP-H1H2V2.nc 728M WCR.OWLES13.20140107.134346_140925.CPP-H1H2V2.nc 692M WCR.OWLES13.20140107.141038_143501.CPP-H1H2V2.nc 726M WCR.OWLES13.20140107.143502_150037.CPP-H1H2V2.nc 888M WCR.OWLES13.20140107.150038_153156.CPP-H1H2V2.nc 367M WCR.OWLES13.20140107.153157_154453.CPP-H1H2V2.nc 1.1G WCR.OWLES13.20140107.154454_162106.CPP-H1H2V2.nc 203M WCR.OWLES13.20140107.162107_162817.CPP-H1H2V2.nc same as next file without last 7 mins 402M WCR.OWLES13.20140107.162107_163517.CPP-H1H2V2.nc 'acwcbeam','wcraspect','TAS' vars are corrupted for the last 7 mins due to prolems with aircraft AIAS ................................................................................ rf08_jan07 Problems with aircraft AIAS, use BIAS; total 5.5 GB This flight was re-processed on 7 Feb 2014 and contains improved acwcbeam, wcraspect, and TAS 1.1G WCR.OWLES13.20140107.193046_200849.CPP-H1H2V2.nc 1.1G WCR.OWLES13.20140107.200850_204825.CPP-H1H2V2.nc 832M WCR.OWLES13.20140107.204826_211744.CPP-H1H2V2.nc 1.2G WCR.OWLES13.20140107.211745_215837.CPP-H1H2V2.nc 985M WCR.OWLES13.20140107.215838_223320.CPP-H1H2V2.nc 374M WCR.OWLES13.20140107.223322_224632.CPP-H1H2V2.nc ................................................................................ rf09_jan08 total 6.0 GB 867M WCR.OWLES13.20140108.162220_165253.CPP-H1H2V2.nc 893M WCR.OWLES13.20140108.165254_172422.CPP-H1H2V2.nc 702M WCR.OWLES13.20140108.172427_174911.CPP-H1H2V2.nc 868M WCR.OWLES13.20140108.174913_181947.CPP-H1H2V2.nc 680M WCR.OWLES13.20140108.181948_184346.CPP-H1H2V2.nc 597M WCR.OWLES13.20140108.184347_190448.CPP-H1H2V2.nc 438M WCR.OWLES13.20140108.190732_192258.CPP-H1H2V2.nc 1.1G WCR.OWLES13.20140108.192259_200034.CPP-H1H2V2.nc ................................................................................ rf10_jan09 total 4.8 GB 682M WCR.OWLES13.20140109.125533_131935.CPP-H1H2V2.nc 742M WCR.OWLES13.20140109.131937_134546.CPP-H1H2V2.nc 699M WCR.OWLES13.20140109.134837_141315.CPP-H1H2V2.nc 722M WCR.OWLES13.20140109.141339_143905.CPP-H1H2V2.nc 745M WCR.OWLES13.20140109.144159_150813.CPP-H1H2V2.nc 725M WCR.OWLES13.20140109.150931_153505.CPP-H1H2V2.nc 332M WCR.OWLES13.20140109.153519_154702.CPP-H1H2V2.nc 231M WCR.OWLES13.20140109.154703_155511.CPP-H1H2V2.nc ................................................................................ rf11_jan12 total 5.0 GB 822M WCR.OWLES13.20140112.122110_125008.CPP-H1H2V2.nc 756M WCR.OWLES13.20140112.125009_131648.CPP-H1H2V2.nc 683M WCR.OWLES13.20140112.131709_134112.CPP-H1H2V2.nc 743M WCR.OWLES13.20140112.134130_140742.CPP-H1H2V2.nc 766M WCR.OWLES13.20140112.140759_143458.CPP-H1H2V2.nc 1.2G WCR.OWLES13.20140112.143514_151713.CPP-H1H2V2.nc 148M WCR.OWLES13.20140112.151714_152228.CPP-H1H2V2.nc ................................................................................ rf12_jan16 total 3.3 GB 407M WCR.OWLES13.20140116.004103_005522.CPP-H1H2V2.nc 724M WCR.OWLES13.20140116.005523_012055.CPP-H1H2V2.nc 532M WCR.OWLES13.20140116.012426_014310.CPP-H1H2V2.nc 782M WCR.OWLES13.20140116.014312_021044.CPP-H1H2V2.nc 386M WCR.OWLES13.20140116.021045_022422.CPP-H1H2V2.nc 541M WCR.OWLES13.20140116.022423_024327.CPP-H1H2V2.nc ................................................................................ rf13_jan18 total 5.8 GB 538M WCR.OWLES13.20140118.173133_175030.CPP-H1H2V2.nc 292M WCR.OWLES13.20140118.175406_180422.CPP-H1H2V2.nc 594M WCR.OWLES13.20140118.180424_182519.CPP-H1H2V2.nc 946M WCR.OWLES13.20140118.182520_185841.CPP-H1H2V2.nc 843M WCR.OWLES13.20140118.185842_192823.CPP-H1H2V2.nc 799M WCR.OWLES13.20140118.192825_195634.CPP-H1H2V2.nc 874M WCR.OWLES13.20140118.195635_202722.CPP-H1H2V2.nc 963M WCR.OWLES13.20140118.202724_210120.CPP-H1H2V2.nc ................................................................................ rf14_jan19 total 4.6 GB 1.1G WCR.OWLES13.20140119.224708_232414.CPP-H1H2V2.nc 685M WCR.OWLES13.20140119.232415_234823.CPP-H1H2V2.nc 764M WCR.OWLES13.20140119.234838_001532.CPP-H1H2V2.nc 637M WCR.OWLES13.20140120.001603_003831.CPP-H1H2V2.nc 609M WCR.OWLES13.20140120.003832_005959.CPP-H1H2V2.nc 766M WCR.OWLES13.20140120.010031_012730.CPP-H1H2V2.nc 191M WCR.OWLES13.20140120.012751_013435.CPP-H1H2V2.nc ................................................................................ rf15_jan20 total 6.2 GB 744M WCR.OWLES13.20140120.184310_190922.CPP-H1H2V2.nc 649M WCR.OWLES13.20140120.190924_193215.CPP-H1H2V2.nc 1.2G WCR.OWLES13.20140120.193216_201228.CPP-H1H2V2.nc 939M WCR.OWLES13.20140120.201229_204535.CPP-H1H2V2.nc 1.1G WCR.OWLES13.20140120.204536_212243.CPP-H1H2V2.nc 1.2G WCR.OWLES13.20140120.212244_220536.CPP-H1H2V2.nc 551M WCR.OWLES13.20140120.220537_222502.CPP-H1H2V2.nc ................................................................................ rf16_jan22 total 5.8 GB 816M WCR.OWLES13.20140122.140452_143338.CPP-H1H2V2.nc 714M WCR.OWLES13.20140122.143407_145916.CPP-H1H2V2.nc 544M WCR.OWLES13.20140122.150051_152001.CPP-H1H2V2.nc 727M WCR.OWLES13.20140122.152003_154539.CPP-H1H2V2.nc 607M WCR.OWLES13.20140122.154608_160731.CPP-H1H2V2.nc 740M WCR.OWLES13.20140122.160732_163336.CPP-H1H2V2.nc 711M WCR.OWLES13.20140122.163355_165859.CPP-H1H2V2.nc 704M WCR.OWLES13.20140122.165927_172415.CPP-H1H2V2.nc 364M WCR.OWLES13.20140122.172438_173727.CPP-H1H2V2.nc ................................................................................ rf17_jan23 total 5.2 GB 761M WCR.OWLES13.20140123.221430_224119.CPP-H1H2V2.nc 668M WCR.OWLES13.20140123.224120_230453.CPP-H1H2V2.nc 744M WCR.OWLES13.20140123.231146_233800.CPP-H1H2V2.nc 871M WCR.OWLES13.20140123.233801_000842.CPP-H1H2V2.nc 1.2G WCR.OWLES13.20140124.000843_005134.CPP-H1H2V2.nc 342M WCR.OWLES13.20140124.005135_010338.CPP-H1H2V2.nc 666M WCR.OWLES13.20140124.010339_012708.CPP-H1H2V2.nc ................................................................................ rf18_jan26 total 5.2 GB 728M WCR.OWLES13.20140126.115805_122343.CPP-H1H2V2.nc 776M WCR.OWLES13.20140126.122344_125104.CPP-H1H2V2.nc 725M WCR.OWLES13.20140126.125118_131651.CPP-H1H2V2.nc 1.1G WCR.OWLES13.20140126.131730_135438.CPP-H1H2V2.nc 834M WCR.OWLES13.20140126.135440_142402.CPP-H1H2V2.nc 761M WCR.OWLES13.20140126.142404_145052.CPP-H1H2V2.nc 357M WCR.OWLES13.20140126.145053_150327.CPP-H1H2V2.nc ................................................................................ rf19_jan27 total 6.1 GB 541M WCR.OWLES13.20140127.201305_203209.CPP-H1H2V2.nc 931M WCR.OWLES13.20140127.203210_210457.CPP-H1H2V2.nc 546M WCR.OWLES13.20140127.210708_212623.CPP-H1H2V2.nc 589M WCR.OWLES13.20140127.212624_214709.CPP-H1H2V2.nc 594M WCR.OWLES13.20140127.214710_220806.CPP-H1H2V2.nc 473M WCR.OWLES13.20140127.220807_222448.CPP-H1H2V2.nc 549M WCR.OWLES13.20140127.222449_224410.CPP-H1H2V2.nc 540M WCR.OWLES13.20140127.224411_230313.CPP-H1H2V2.nc 582M WCR.OWLES13.20140127.230314_232345.CPP-H1H2V2.nc 517M WCR.OWLES13.20140127.232346_234159.CPP-H1H2V2.nc 339M WCR.OWLES13.20140127.234200_235357.CPP-H1H2V2.nc ................................................................................ rf20_jan28 total 5.5 GB 767M WCR.OWLES13.20140128.173230_175932.CPP-H1H2V2.nc 828M WCR.OWLES13.20140128.175933_182844.CPP-H1H2V2.nc 382M WCR.OWLES13.20140128.182845_184212.CPP-H1H2V2.nc 808M WCR.OWLES13.20140128.184213_191040.CPP-H1H2V2.nc 859M WCR.OWLES13.20140128.191041_194058.CPP-H1H2V2.nc 242M WCR.OWLES13.20140128.194059_194930.CPP-H1H2V2.nc 776M WCR.OWLES13.20140128.194932_201651.CPP-H1H2V2.nc 706M WCR.OWLES13.20140128.202036_204530.CPP-H1H2V2.nc 251M WCR.OWLES13.20140128.204531_205421.CPP-H1H2V2.nc ................................................................................ rf21_jan29 total 2.7 GB 792M WCR.OWLES13.20140129.171826_174620.CPP-H1H2V2.nc 955M WCR.OWLES13.20140129.174622_182000.CPP-H1H2V2.nc 472M WCR.OWLES13.20140129.182001_183639.CPP-H1H2V2.nc 514M WCR.OWLES13.20140129.185241_191048.CPP-H1H2V2.nc ................................................................................ The files listed below can be seen via: http://www-das.uwyo.edu/wcr/projects/owles13/PROCESSED_DATA/ 681K WCR_L1_UserNotes.pdf WCR data user manual 26K WCR_L1_OWLES13.20131015.cdl Processing cdl file 14K wcr2conf_owles13.pro WCR configuration file ................................................................................ ================================================================================ OWLES13 WCR L1 Processed Data Files Release Notes ================================================================================ * Revision history: = RevisionDate: 4 February 2014 = RevisionNumber = 1 = Revision_1: Reflectivity, Doppler velocity = ProcessAuthor: Samuel Haimov (haimov@uwyo.edu, atsc-cc@uwyo.edu) * All WCR Level 1 data product files (L1 processed data) are in NetCDF 3.5 and are cataloged above. Additional information about the variables and attributes in the files is provided in the netcdf prototype file WCR_L1_....cdl Detailed information about the radar configuration and calibration is given in wcr2conf_....pro. Short user manual about the radar processed data is available in WCR_L1_UserNotes.pdf * The data files are saved in L1/ sub-directories rfXX_mmmDD representing the research flight number and month and date of the flight using the WCR. ATTENTION: If you are reading these notes via the WCR project web page the processed data directories/files are available for download via the web. The access may be password protected. Contact the PI(s) for user/password information. * Quick looks of radar reflectivity and radial Doppler velocity corrected for the radar platform motion contribution are avialbale at: http://www-das.uwyo.edu/wcr/projects/ascii13/QUICKLOOKS/ The quick looks are located in directories named the same as the processed data directories (rfXX_mmmDD). The quick look images show only pixels for targets with reflectivity exceeding 3 standard deviations above the mean noise. The up- and down-pointing beam images, whenever both are availabe, are combined in a single image. The data is interpolated to represent the target in a vertical plane in altitude, but the velocities are not corrected for contamination from the horizontal wind (if any). The flight level is marked as black dotted line in the image. The area around the flight level without any signal represents the radar "blind" zone, which is about 100 m, depending on the transmitted pulse width. The sub-terrain pixels (when shown) are plotted in black. The immediate 75 m (150 m) above the surface for the down (down-slant) beam image are void of showing any targets. This is done to emphasize the possibility of ground clutter in the return from this near surface layer. Other markings are also possible. Currently, when requested, we mark pixels (with diamonds) in the reflectivity image affected by a reciever saturation. Areas where the down and/or up beam deviate from vertical more than 10 degrees are highlighted along the flight level trace with black squares (frequently it plots as a thick black line). This happens when the aircraft is flying with very large pitch and/or is in turn. For flights below 2.5 km above the surface the strong return from the surface may exceed the cross-channel(antenna) isolation. In the quick looks the pixels that may be affected are blanked out. This happens exclusively for the side/up antenna image with a leak from the down antenna surface return (for more see Reflectivity factor notes below). The ground return in dBZ msy slso be plotted (for the up/down reflectivity only) as a straight tick line below the surface cross section (in black) and just above the time axis. * Known specifics of the data in this revision General: = There is an elevated noise (interference) in the first few range gates of the returns from the up(side)-pointing beam; typically the maximum radar range affected is less than 180 m. The cause is unknown and it occures only in flights. It is present frequently. The intensity varies and most of the time its mean value is less than 5 dB above the signal mean noise. Reflectivity in these range gates has an added uncertainty of a few additional dBs. The first 75 m after the blind zone in the quick look images for the up/side beam are blanked. Reflectivity factor: = Reflectivity absolute accuracy is estimated at better than 3 dB. The precision for the full received power dynamic range of the radar is expected to be less than 1 dB. The received power from the up-pointing antenna has been calibrated with a corner reflector. The down and down-slant channels are calibrated relative to the up-antenna channel using weather targets. The additional uncertainty for the down antenna and down-fore antennas antennas w.r.t. the up antenna is about 0.5 and 1.5 dB, respectively. = The receiver stability is better than 0.5 dB/hour when the ambient temperature does not change more than 5 degC/hour. = The transmitter leak to the first few range gates of the received signals is small (estimated to less than 0.3dB above the mean noise) or not detectable. = The received signal from the up and down antennas can get saturated by weather targets stronger than about +22 dBZ in the first 200-300 m from the radar/aircraft. Surface return for up to 5.5 km AGL may have pixels(data points) in the saturation range (0 to ~+3 dBm). The percentage of saturated data points decreases with range and is small at large ranges. = Cross-antenna talk is possible. Strong down-fore antenna targets may leak to the up antenna return and strong down antenna targets may leak into the down-fore antenna return. The most frequent cross-talk contamination is from surface returns from the down antenna, but is typically below 3 standard devitions of the noise. = Reflectivity in a few range gates above the surface returns (if any) may be cluttered by the surface or near surface targets (typically this is less than 150 m for the down- slant beam and 75 m for the down beam). The clutter is more pronounced for the slant beam. = Reflecitvity is not corrected for attenuation due to absorption and scattering. It could be significant in the presence of cloud liquid water and precipitation. Velocity: = Corrected Doppler velocity from the down-pointing beams may have bias of up to +- 1.0 m/s and uncertainty of up to +-1.0 m/s. Typical bias and uncertainty are less than +-0.5 m/s. It is our belief that the bias is mainly due to changes in the antennas pointing angles caused by flexing of the aircraft fuselage not represented in the IRS data. In addition the fuselage expands with altitude and this also changes slightly the antenna pointing directions. Errors in the IRS(navigation) data have an effect as well. = Corected Doppler velocity accuracy from the up-pointing antenna is not quantified with a known reference target. The analysis of appropriate weather targets suggests a maximum bias of ~1 m/s. = The errors in the beam pointing angles for the up and down beams as well as some other errors lead to possible discontinuity in the mean vertical Doppler velocity profile at the flight level. The discrepancy is generally less than 0.3 m/s and typically within 0.1 m/s. It is not established which beam is contributing more to this error. Given that the aircraft flexes/expands differently at the up/side antenna location and the 2 down antenna locations as well as the dependence of these distortions on the altitude and attitude of the aircraft there is no single optimal correction (optimal set of beam angles) for all conditions. = The Doppler data occasionally exhibit folded velocity regions (mostly in the slanted beam return). We do not make an attempt to unfold due to difficulties of automating this process. Typically unfolding any specific data segment is not difficult. For help on this you may contact Samuel Haimov (haimov@uwyo.edu). * Known corrupted data not fixed in this revision: = intermittent slight interference in the first few range gates of the up-beam reflectivity and velocity = snr variable is not correctly calculated; the bug was fixed but the data has not been reprocessed (not critical) ================================================================================