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Recreated MSU Precipitation Data Set by Roy Spencer (July 1994)

In July 1994, Roy Spencer successfully recreated the MSU precipitation data set, now available in the msu/ppt subdirectory. This dataset consists of monthly rainfall totals in millimeters, organized into files for each month of the year. The grid represents 2.5-degree squares, with parameters set at (nx=144, ny=48). Note that precipitation data covers 48 latitude bands (60S to 60N), and can include spuriously high values near land and sea ice. For inquiries, contact Roy Spencer at 205-922-5960 or John Christy at 205-922-5763, christy@atmos.uah.edu.

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Recreated MSU Precipitation Data Set by Roy Spencer (July 1994)

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  1. 15 July 1994 Roy Spencer has recreated the MSU precipitation data set and I have placed it in the msu/ppt subdirectory. The data are monthly totals of rainfall in mm. Each file contains the 12 months of the year indicated by the extension number. Grid boxes are 2.5 degree squares. parameter (nx = 144, ny =48) character *12 atype read (unit,100) nyr,nmn,num,atype read (unit,101) ((nppt(ix,iy),ix=1,nx),iy=1,ny) 100 format(3i12,a12) 101 format(16i5) Note that the precipitation is only given for 48 latitude bands (60S to 60N) rather than the full 72 bands. There are occasionally spuriously high values adjacent to land or sea ice. Be careful when using values in such regions. The algorithm used in this data set incorporates only channel 1 and 2 from the MSU and the "atype" identifier is MSU 1+2 PPT. Questions: Roy Spencer 205-922-5960 John Christy 205-922-5763 christy@atmos.uah.edu

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