Baseline Spec Template - NEXRAD Radar Operations Center - NOAA

Document Number 2620003NCode Identification 0WY55WSR-88D ROC2009Build 12.014 CROSS SECTION (RCS, VCS)14.1 SS Product Description"This product shall provide a vertical cross section of reflectivity or mean radial velocity datadisplayable as an image for a user selected vector. This vector shall be defined by the operator usingtwo end-points, up to 230 km apart, and at any orientation and location within 230 km of the radar.This product shall be produced by mapping the nearest value in range along a radial, to a point inthe plane of the vertical cross section defined by the intersection of the plane and the radial. Thedisplayable version of the product shall be produced by linearly interpolating between the mappedvalues, both horizontally and vertically as necessary. The product shall be generated only onrequest. The product shall be available for both 8 and 16 data levels defining the intensity rangeand velocity range data levels. The product shall include annotations for the product name, radarID, time and date of volume scan, maximum data value and location(s), radar position, radarelevation above MSL, and the radar operational mode. The location of the vector center and the endpoints (az/ran) shall also be indicated."14.2 Display FormatThe product is displayable on a unique grid (Format V, Appendix B) with height as ordinate and thedistance along the cross section as the abscissa. The distance grid scale of the abscissa will be one ofthree with the range of the data determining which grid scale is used. The three scales are 0 to 50nmi, 0 to 80 nmi, and 0 to 120 nmi. Range marks are labeled every 5 nmi for the 0 to 50 nmi rangeand every 10 nmi for the remainder.The origin of the grid represents the Western nearest or Northern end point of the vector, dependingupon its orientation, and the data that is contained in the label of the grid is the range from theradar of this point. Vectors will be plotted to outline the cross section area. These vectors will showthe extent of the data domain that is limited because of the length of the user supplied vector, andthese outline vectors will also show the difference between the area of no data versus no radarsampled data.The grid is considered an integral part of the product and will always be available simultaneouslywith the image.14.2.1 Data LevelsThe data level values that may be selected for reflectivity and mean radial velocity are the same asthose specified in 1.2.1 and 2.2.1, respectively.14.2.2 Color Level Code TablesThe color level code table for the Reflectivity will be the 16-level table defined in 1.2.2. The Velocitytable will be the 16-level velocity table defined in 2.2.2. The grid color will be light gray.14.2.3 Range/Data ResolutionCoverage Area Resolution (nmi(R-Z plane) x nmi)124 nmi x 70 kft 0.54 nmiAltitudeHorizontal x 0.27nmi VerticalProduct CenterN/A14-1