ne-noaa-ncdc-ghcn-daily-process

-Five-year average frequencies were plotted around the mean for the full-time period

-First, COOP stations with less than 10% missing daily precipitation data for the period 1895-2011 were identified. - For each station, the number of events in each year exceeding the threshold was computed. -Next, grid box (1 degree latitude by 1 degree longitude) average values were calculated for each year, by averaging the values for each station available in that grid box. The annual grid box values were used to produce a state value by averaging the values for all grid boxes containing state station data - Then the annual mean number of days in the state was calculated for the full time period, as well as the annual mean number of days for each five-year period.

The duration of this activity was 15 minutes.

Output artifacts generated by this activity :

CICS computer cluster /snfs4/assessment/state summaries, statetmin70F_1900_2014_Apr03_2015.txt, Code 1900-2014 tmin over 70F.doc, Regression p-values all states FINAL RESULTS.xls

Computing environment : Linux (CentOS release 6.4); Mac OS X (darwin x86_64 m64); Windows 7 (64 bit Operating System)

Software used : Fortran 95; lf95 compiler (Lahey/Fujitsu Linux64 Fortran compiler release L8.10b), R version 3.1.3

Visualization software used : Microsoft Office Excel 2007

This activity resulted in the following :

• figure 27.3b: Observed Number or Warm Nights was derived from dataset Global Historical Climatology Network - Daily