GOES-16 cloud-motion wind and ASCAT ocean surface wind data for the article "Evolution of an atmospheric Kármán vortex street from high-resolution satellite winds: Guadalupe Island case study"

<p>This repository contains GOES-16 cloud-motion winds and ASCAT ocean surface winds derived for and analysed in the article &quot;Evolution of an atmospheric K&aacute;rm&aacute;n vortex street from high-resolution satellite winds: Guadalupe Island case study&quot;.</p> <p>&nbsp;</p> <p><strong>GOES-16 Local Cloud-Motion Vectors</strong></p> <p>Data&nbsp;in two ASCII text files:&nbsp;<em>raw5x5g16b2_2018d129_1437z_2232z_north.txt</em> and&nbsp;<em>raw5x5g16b2_2018d129_1437z_2232z_south.txt</em>, with the former containing data for the upper half and the latter for the lower half of the study&nbsp;domain between ~26^oN and ~29.5^oN.&nbsp;Both files include 96 records, each record corresponding to a specific 5-minute time interval between 14:37 UTC and 22:32 UTC on 9 May&nbsp;2018&mdash;9 May is&nbsp;day of year 129. The start and end times are given at the beginning of each record in YYYYDDDHHMM format, where Y is year, D is day of year, H is hour, and M is minute. For example, the first record contains data between&nbsp;14:37 UTC and&nbsp;14:42 UTC, as indicated by the start and end times of&nbsp;20181291437 and&nbsp;20181291442. Then follows the four column headers&nbsp;LAT &nbsp;LON &nbsp;SPD &nbsp;DIR, corresponding to latitude (degree), longitude (degree), wind speed (m/s), and wind direction (meteorological convention,&nbsp;degree north), respectively&mdash;note that no cloud-top height/pressure value was calculated for the wind vectors. Each subsequent line is a single GOES-16 local cloud-motion vector, derived from 5x5-pixel band 2 (0.64 micron visible red band) image templates, which represent an area of&nbsp;~2.5x2.5 km²&nbsp;at the subsatellite point.</p> <p>&nbsp;</p> <p><strong>MODIS&ndash;GOES-16 3D Cloud-Motion Vectors</strong></p> <p>Data in two netCDF files:&nbsp;<em>MOD.A2018129.1810-75_ABI_CONUS_band_02_goes16.nc</em>&nbsp;and&nbsp;<em>MYD.A2018129.2120-75_ABI_CONUS_band_02_goes16.nc</em>, which&nbsp;correspond&nbsp;to the MODIS Terra and MODIS Aqua overpasses, respectively.&nbsp;These joint MODIS&ndash;GOES-16 wind retrievals&nbsp;were&nbsp;derived using ~8x8 km²&nbsp;red band image templates sampled every 2 km. The data files are self-explanatory, but the variables &quot;lat&quot;, &quot;lon&quot;, &quot;V_3D&quot;, and &quot;H_3D&quot; provide the latitude (degree), longitude (degree), the [east-west, north-south]&nbsp;wind components (m/s), and the geometric stereo height (m)&nbsp;for each wind retrieval.</p> <p>&nbsp;</p> <p><strong>ASCAT Ocean Surface Wind Vectors</strong></p> <p>Data in two netCDF files:&nbsp;<em>ascat_20180509_030000_metopa_59945_srv_o_063_ovw_new.nc</em> and&nbsp;<em>ascat_20180509_040000_metopb_29259_srv_o_063_ovw_new.nc</em>, which correspond to the MetOp-A and MetOp-B overpasses, respectively. These&nbsp;ASCAT ocean surface retrievals are stress-equivalent winds at 10 m height, given on a 6.25-km grid.&nbsp;The data files are self-explanatory, but the variables &quot;lat&quot;, &quot;lon&quot;, &quot;wind_speed&quot;, and &quot;wind_dir&quot; provide the latitude (degree), longitude (degree), the&nbsp;wind speed (m/s), and the wind direction (oceanographic convention,&nbsp;degree north)&nbsp;for each wind retrieval. <em>Note that wind direction follows the oceanographic convention and refers to the&nbsp;direction towards which the wind blows (equivalent to meteorological wind direction&nbsp;minus&nbsp;180^o)!</em></p>