================================================================================ WCR3TEST15 WCR Level 2 Processed Data Directory Catalog ================================================================================ Last Update: 15 April 2016 ................................................................................ Directory FileDescriptors Comment Total Size File Size WCR.ExpName.YYYYMMDD...nc * 'up-down' is merged data from 'up' and 'down' antennas ................................................................................ rf01_nov12 total 43 MB 938K WCR.WCR3TEST15.20151112.182331_184724.down-fore.nc 821K WCR.WCR3TEST15.20151112.182331_184724.down.nc 5.0M WCR.WCR3TEST15.20151112.182331_184724.side.nc 111K WCR.WCR3TEST15.20151112.184831_185343.down-fore.nc 97K WCR.WCR3TEST15.20151112.184831_185343.down.nc 85K WCR.WCR3TEST15.20151112.185420_185816.down.nc 915K WCR.WCR3TEST15.20151112.185420_185816.side.nc 21K WCR.WCR3TEST15.20151112.185849_185941.down-fore.nc 17K WCR.WCR3TEST15.20151112.185849_185941.down.nc 244K WCR.WCR3TEST15.20151112.185849_185941.side.nc 236K WCR.WCR3TEST15.20151112.190124_190751.down.nc 1.8M WCR.WCR3TEST15.20151112.190124_190751.side.nc 300K WCR.WCR3TEST15.20151112.190902_191530.down-fore.nc 258K WCR.WCR3TEST15.20151112.190902_191530.down.nc 1.2M WCR.WCR3TEST15.20151112.190902_191530.up-down.nc 5.8M WCR.WCR3TEST15.20151112.190902_191530.up.nc 198K WCR.WCR3TEST15.20151112.191557_191808.down-fore.nc 58K WCR.WCR3TEST15.20151112.191557_191808.down.nc 571K WCR.WCR3TEST15.20151112.191557_191808.side.nc 55K WCR.WCR3TEST15.20151112.191807_192018.down-fore.nc 45K WCR.WCR3TEST15.20151112.191807_192018.down.nc 571K WCR.WCR3TEST15.20151112.191807_192018.side.nc 56K WCR.WCR3TEST15.20151112.192018_192053.down-fore.nc 57K WCR.WCR3TEST15.20151112.192018_192053.down.nc 154K WCR.WCR3TEST15.20151112.192018_192053.side.nc 28K WCR.WCR3TEST15.20151112.192203_192241.down-fore.nc 47K WCR.WCR3TEST15.20151112.192203_192241.down.nc 101K WCR.WCR3TEST15.20151112.192203_192241.up-down.nc 419K WCR.WCR3TEST15.20151112.192203_192241.up.nc 87K WCR.WCR3TEST15.20151112.192241_192409.down-fore.nc 104K WCR.WCR3TEST15.20151112.192241_192409.down.nc 460K WCR.WCR3TEST15.20151112.192241_192409.up-down.nc 963K WCR.WCR3TEST15.20151112.192241_192409.up.nc 92K WCR.WCR3TEST15.20151112.192408_192536.down-fore.nc 110K WCR.WCR3TEST15.20151112.192408_192536.down.nc 242K WCR.WCR3TEST15.20151112.192408_192536.up-down.nc 965K WCR.WCR3TEST15.20151112.192408_192536.up.nc 71K WCR.WCR3TEST15.20151112.192535_192620.down-fore.nc 64K WCR.WCR3TEST15.20151112.192535_192620.down.nc 247K WCR.WCR3TEST15.20151112.192535_192620.up-down.nc 540K WCR.WCR3TEST15.20151112.192535_192620.up.nc 2.9M WCR.WCR3TEST15.20151112.193058_194759.down-fore.nc 3.0M WCR.WCR3TEST15.20151112.193058_194759.down.nc 3.9M WCR.WCR3TEST15.20151112.193058_194759.up-down.nc 1.9M WCR.WCR3TEST15.20151112.193058_194759.up.nc 1.1M WCR.WCR3TEST15.20151112.194758_195458.down-fore.nc 1.1M WCR.WCR3TEST15.20151112.194758_195458.down.nc 3.1M WCR.WCR3TEST15.20151112.194758_195458.up-down.nc 2.2M WCR.WCR3TEST15.20151112.194758_195458.up.nc ................................................................................ rf02_nov24 Data from this flight was collected for test purposes only and is not available to external users ................................................................................ rf03_dec17 total 40 MB 298K WCR_L2.WCR3TEST15.20151217.173539_173842.down-fore.nc 298K WCR_L2.WCR3TEST15.20151217.173539_173842.down.nc 367K WCR_L2.WCR3TEST15.20151217.173539_173842.up-down.nc 45K WCR_L2.WCR3TEST15.20151217.173539_173842.up.nc 379K WCR_L2.WCR3TEST15.20151217.174119_174443.down-fore.nc 374K WCR_L2.WCR3TEST15.20151217.174119_174443.down.nc 440K WCR_L2.WCR3TEST15.20151217.174119_174443.up-down.nc 3.1M WCR_L2.WCR3TEST15.20151217.174119_174443.up.nc 460K WCR_L2.WCR3TEST15.20151217.174538_174935.down-fore.nc 454K WCR_L2.WCR3TEST15.20151217.174538_174935.down.nc 569K WCR_L2.WCR3TEST15.20151217.174538_174935.up-down.nc 101K WCR_L2.WCR3TEST15.20151217.174538_174935.up.nc 234K WCR_L2.WCR3TEST15.20151217.175039_175250.down-fore.nc 231K WCR_L2.WCR3TEST15.20151217.175039_175250.down.nc 506K WCR_L2.WCR3TEST15.20151217.175039_175250.up-down.nc 270K WCR_L2.WCR3TEST15.20151217.175039_175250.up.nc 29K WCR_L2.WCR3TEST15.20151217.175249_175304.down-fore.nc 29K WCR_L2.WCR3TEST15.20151217.175249_175304.down.nc 30K WCR_L2.WCR3TEST15.20151217.175249_175304.up-down.nc 84K WCR_L2.WCR3TEST15.20151217.175249_175304.up.nc 293K WCR_L2.WCR3TEST15.20151217.175342_175616.down-fore.nc 298K WCR_L2.WCR3TEST15.20151217.175342_175616.down.nc 364K WCR_L2.WCR3TEST15.20151217.175342_175616.up-down.nc 2.3M WCR_L2.WCR3TEST15.20151217.175342_175616.up.nc 346K WCR_L2.WCR3TEST15.20151217.175736_180041.down-fore.nc 351K WCR_L2.WCR3TEST15.20151217.175736_180041.down.nc 431K WCR_L2.WCR3TEST15.20151217.175736_180041.up-down.nc 70K WCR_L2.WCR3TEST15.20151217.175736_180041.up.nc 122K WCR_L2.WCR3TEST15.20151217.180241_180408.down-fore.nc 122K WCR_L2.WCR3TEST15.20151217.180241_180408.down.nc 343K WCR_L2.WCR3TEST15.20151217.180241_180408.up-down.nc 963K WCR_L2.WCR3TEST15.20151217.180241_180408.up.nc 49K WCR_L2.WCR3TEST15.20151217.180408_180442.down-fore.nc 49K WCR_L2.WCR3TEST15.20151217.180408_180442.down.nc 95K WCR_L2.WCR3TEST15.20151217.180408_180442.up-down.nc 357K WCR_L2.WCR3TEST15.20151217.180408_180442.up.nc 2.5M WCR_L2.WCR3TEST15.20151217.180741_182442.down-fore.nc 2.5M WCR_L2.WCR3TEST15.20151217.180741_182442.down.nc 2.9M WCR_L2.WCR3TEST15.20151217.180741_182442.up-down.nc 697K WCR_L2.WCR3TEST15.20151217.180741_182442.up.nc 1.7M WCR_L2.WCR3TEST15.20151217.182441_183754.down-fore.nc 1.7M WCR_L2.WCR3TEST15.20151217.182441_183754.down.nc 2.2M WCR_L2.WCR3TEST15.20151217.182441_183754.up-down.nc 435K WCR_L2.WCR3TEST15.20151217.182441_183754.up.nc 1.3M WCR_L2.WCR3TEST15.20151217.184232_185615.down-fore.nc 1.2M WCR_L2.WCR3TEST15.20151217.184232_185615.down.nc 2.9M WCR_L2.WCR3TEST15.20151217.184232_185615.side.nc 1.3M WCR_L2.WCR3TEST15.20151217.185701_190715.down-fore.nc 1.2M WCR_L2.WCR3TEST15.20151217.185701_190715.down.nc 1.8M WCR_L2.WCR3TEST15.20151217.185701_190715.up-down.nc 638K WCR_L2.WCR3TEST15.20151217.185701_190715.up.nc ................................................................................ rf04_jan20 TF01 flight for KPR testing total 30 MB 1.1M WCR_L2.WCR3TEST15.20160120.190917_191258.up.nc 5.5M WCR_L2.WCR3TEST15.20160120.191309_194343.down.nc 9.0M WCR_L2.WCR3TEST15.20160120.191309_194343.up-down.nc 4.0M WCR_L2.WCR3TEST15.20160120.191309_194343.up.nc 2.9M WCR_L2.WCR3TEST15.20160120.194343_195909.down.nc 5.1M WCR_L2.WCR3TEST15.20160120.194343_195909.up-down.nc 2.3M WCR_L2.WCR3TEST15.20160120.194343_195909.up.nc ................................................................................ rf05_jan25 TF02 flight for KPR testing total 18 MB 6.2M WCR_L2.WCR3TEST15.20160125.213349_220423.down.nc 7.3M WCR_L2.WCR3TEST15.20160125.213349_220423.up-down.nc 2.5M WCR_L2.WCR3TEST15.20160125.213349_220423.up.nc 563K WCR_L2.WCR3TEST15.20160125.220423_220747.down.nc 624K WCR_L2.WCR3TEST15.20160125.220423_220747.up-down.nc 48K WCR_L2.WCR3TEST15.20160125.220423_220747.up.nc ................................................................................ rf06_mar04 total 8.2 MB 1.7M WCR_L2.WCR3TEST15.20160304.190013_191017.down-fore.nc 1.7M WCR_L2.WCR3TEST15.20160304.190013_191017.down.nc 3.3M WCR_L2.WCR3TEST15.20160304.190013_191017.up-down.nc 1.7M WCR_L2.WCR3TEST15.20160304.190013_191017.up.nc ................................................................................ rf07_mar07 total 112 MB 3.0M WCR_L2.WCR3TEST15.20160307.221228_222929.down-fore.nc 3.0M WCR_L2.WCR3TEST15.20160307.221228_222929.down.nc 7.4M WCR_L2.WCR3TEST15.20160307.221228_222929.up-down.nc 6.3M WCR_L2.WCR3TEST15.20160307.221228_222929.up.nc 2.4M WCR_L2.WCR3TEST15.20160307.222928_224629.down-fore.nc 2.4M WCR_L2.WCR3TEST15.20160307.222928_224629.down.nc 7.9M WCR_L2.WCR3TEST15.20160307.222928_224629.up-down.nc 6.4M WCR_L2.WCR3TEST15.20160307.222928_224629.up.nc 1.7M WCR_L2.WCR3TEST15.20160307.224629_230330.down-fore.nc 1.7M WCR_L2.WCR3TEST15.20160307.224629_230330.down.nc 7.0M WCR_L2.WCR3TEST15.20160307.224629_230330.up-down.nc 6.7M WCR_L2.WCR3TEST15.20160307.224629_230330.up.nc 2.2M WCR_L2.WCR3TEST15.20160307.230329_232030.down-fore.nc 2.2M WCR_L2.WCR3TEST15.20160307.230329_232030.down.nc 6.9M WCR_L2.WCR3TEST15.20160307.230329_232030.up-down.nc 5.2M WCR_L2.WCR3TEST15.20160307.230329_232030.up.nc 529K WCR_L2.WCR3TEST15.20160307.232030_232434.down-fore.nc 522K WCR_L2.WCR3TEST15.20160307.232030_232434.down.nc 1.6M WCR_L2.WCR3TEST15.20160307.232030_232434.up-down.nc 1.1M WCR_L2.WCR3TEST15.20160307.232030_232434.up.nc 3.4M WCR_L2.WCR3TEST15.20160307.233228_234929.down-fore.nc 3.4M WCR_L2.WCR3TEST15.20160307.233228_234929.down.nc 9.7M WCR_L2.WCR3TEST15.20160307.233228_234929.up-down.nc 6.9M WCR_L2.WCR3TEST15.20160307.233228_234929.up.nc 1.7M WCR_L2.WCR3TEST15.20160307.234929_000322.down-fore.nc 1.7M WCR_L2.WCR3TEST15.20160307.234929_000322.down.nc 5.6M WCR_L2.WCR3TEST15.20160307.234929_000322.up-down.nc 3.9M WCR_L2.WCR3TEST15.20160307.234929_000322.up.nc ................................................................................ rf08_mar28 TF01 flight for zenith FOV lidar testing total 0 GB Radar Data not collected ................................................................................ rf09_apr01 TF02 flight for zenith FOV lidar testing total 7.9 MB 328K WCR_L2.WCR3TEST15.20160401.163824_164545.down-fore.nc 376K WCR_L2.WCR3TEST15.20160401.163824_164545.down.nc 1.6M WCR_L2.WCR3TEST15.20160401.163824_164545.up-down.nc 1.2M WCR_L2.WCR3TEST15.20160401.163824_164545.up.nc 639K WCR_L2.WCR3TEST15.20160401.164546_165115.down-fore.nc 656K WCR_L2.WCR3TEST15.20160401.164546_165115.down.nc 1.2M WCR_L2.WCR3TEST15.20160401.164546_165115.up-down.nc 371K WCR_L2.WCR3TEST15.20160401.164546_165115.up.nc 137K WCR_L2.WCR3TEST15.20160401.165540_165800.down-fore.nc 149K WCR_L2.WCR3TEST15.20160401.165540_165800.down.nc 156K WCR_L2.WCR3TEST15.20160401.165540_165800.up-down.nc 817K WCR_L2.WCR3TEST15.20160401.165540_165800.up.nc 29K WCR_L2.WCR3TEST15.20160401.165833_165933.down-fore.nc 25K WCR_L2.WCR3TEST15.20160401.165833_165933.down.nc 28K WCR_L2.WCR3TEST15.20160401.165833_165933.up-down.nc 351K WCR_L2.WCR3TEST15.20160401.165833_165933.up.nc ................................................................................ rf10_apr14 TF03 flight for zenith FOV lidar testing total 56 MB 2.5M WCR_L2.WCR3TEST15.20160414.182340_183320.down-fore.nc 2.5M WCR_L2.WCR3TEST15.20160414.182340_183320.down.nc 2.5M WCR_L2.WCR3TEST15.20160414.182340_183320.up-down.nc 4.4M WCR_L2.WCR3TEST15.20160414.182340_183320.up.nc 2.4M WCR_L2.WCR3TEST15.20160414.183442_184555.down-fore.nc 2.4M WCR_L2.WCR3TEST15.20160414.183442_184555.down.nc 2.4M WCR_L2.WCR3TEST15.20160414.183442_184555.up-down.nc 4.7M WCR_L2.WCR3TEST15.20160414.183442_184555.up.nc 3.2M WCR_L2.WCR3TEST15.20160414.184741_185856.down-fore.nc 3.2M WCR_L2.WCR3TEST15.20160414.184741_185856.down.nc 3.7M WCR_L2.WCR3TEST15.20160414.184741_185856.up-down.nc 1.8M WCR_L2.WCR3TEST15.20160414.184741_185856.up.nc 1.4M WCR_L2.WCR3TEST15.20160414.190557_191605.down-fore.nc 1.4M WCR_L2.WCR3TEST15.20160414.190557_191605.down.nc 3.5M WCR_L2.WCR3TEST15.20160414.190557_191605.up-down.nc 2.1M WCR_L2.WCR3TEST15.20160414.190557_191605.up.nc 1.7M WCR_L2.WCR3TEST15.20160414.191732_192808.down-fore.nc 1.7M WCR_L2.WCR3TEST15.20160414.191732_192808.down.nc 3.4M WCR_L2.WCR3TEST15.20160414.191732_192808.up-down.nc 1.8M WCR_L2.WCR3TEST15.20160414.191732_192808.up.nc 792K WCR_L2.WCR3TEST15.20160414.192843_193336.down-fore.nc 800K WCR_L2.WCR3TEST15.20160414.192843_193336.down.nc 1.7M WCR_L2.WCR3TEST15.20160414.192843_193336.up-down.nc 855K WCR_L2.WCR3TEST15.20160414.192843_193336.up.nc ................................................................................ The files listed below can be seen via: http://www-das.uwyo.edu/wcr/projects/wcr3test15/PROCESSED_DATA/ 455K WCR_L2_UserNotes.pdf WCR data user manual 16K WCR_L2_WCR3TEST15.20151103.cdl Processing cdl file ================================================================================ WCR3TEST15 WCR L2 Processed Data Files Release Notes ================================================================================ * Revision history: = RevisionDate: 10 March 2016 = RevisionNumber = 1 = Revision_1: Thresholded and Interpolated Reflectivity, Doppler velocity = ProcessAuthor: Samuel Haimov (haimov@uwyo.edu, atsc-cc@uwyo.edu) * Important: L2 processing softare and the quick looks software are still in development. It is possible that there are bugs that have not been caught. Please exercise caution when using the data and report problems. Thank you. * All WCR Level 2 data product files (L2 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_L2_....cdl * The data files are saved in L2/ 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. * L2 Reflectivity and velocity for each active beam(antenna) are written in separate files. In addition a merged up-down file is generated from the up and down antenna L1 products when both antennas have been used during the acquisition. L2 products are thresholded and filtered to remove noise pixels. This takes care of more than 95% of the noise in the L1 products. However there is a tradeoff. The thresholding scheme may remove some pixels from weak targets and/or also affect the spatial boundaries of the targets. On the other hand some noise pixels may be left in the images and may or may not be difficult to be recognized as such. Most of the time L2 products should be sufficient and accurate enough to be used for scientific analysis. For some specialized analysis where more sophisticated target and artifact detection may be needed it is recommended that the users utilize the L1 products and do their own processing. In L2 an additional data averaging is implemented before thresholding and the reflectivity is provided in dBZ. This means that further averaging of L2 reflectivity would not increase the sensitivity (the minimum detectable signal). If such improved sensitivity (with the expense of reduced spatial resolution) is needed the user should work with L1 data. Also keep in mind that the interpolation implemented in L2 may introduce some minor biases. * Quick looks The quick looks for L2 reflecitivity and velocity products are similar to the quick looks produced from L1 reflectivity and velocity products, but there are some differences. First, it is more accurate to call them quick looks than the ones for L1 since there is much less additional processing to the L2 written reflectivity and velocity to produce them. The main additional processing that is done to generate these quick looks is to apply the reflectivity mask available in the files under variable name 'wcrmask'. Bits 3 to 8 and bit 11 of the mask are used in the quick looks. Bits 5, 6, and 7 are used to highlight the affected pixels, if any, in the images (shown in black). Pixels that are affected by bits 3, 4, 8 and 11 are removed (not plotted). Second. The L2 mask, wcrmask, is not as accurate as the mask in L1 files (reflectivity_mask). The reason is the altitude interpolation implemented for all up and down pointing L2 products. On occasion this causes some pixels masked in L1 reflectivity_mask to get lost in L2 wcrmask. Third. Some of the bits in wcrmask, at this time, are not implemented as true bits. This means that, for example, bit 4 for radar blind zone is saved as fixed value of 16. So when removing all pixels more than 6 degrees off of vertical for up, down or up-down by searching for active bit 3 (value 8) it will not remove the pixels associated with the blind zone (bit 4), because those pixels were given value 16 in the wcrmask. This behavior may be changed in the future. Forth. Not all mask bits in L1 reflectivity_mask are passed on to L2 wcrmask. One example is the pixels affected by antennas cross-talk. As a result, in rare occasions, you may see some small artifacts in L2 quick looks that are not present in L1 quick looks. Fifth. The distance axis in the L2 quick looks is based on the aircraft ground speed, while the L1 quick look distance axis is based on the aircraft air speed. This introduces some difference in distance depending on the wind speed and wind direction with respect to the aircraft heading. * Known corrupted data not fixed in this revision: ================================================================================