activity : state-summaries-2019-ms-observed-number-of-extreme-precipitation-process

state-summaries-2019-ms-observed-number-of-extreme-precipitation-process

Methodology:

-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.

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

Methodology Contact: Kenneth E. Kunkel CICSNC/NCEI

Processes

The duration of this activity was 15 minutes.

Interim artifacts generated by this activity :
state3inch_1900_2014_Apr03_2015.txt,Code 1900-2014 prcp over 3in.doc,Regression p-values all states FINAL RESULTS.xls
Output artifacts generated by this activity :
CICS computer cluster /snfs4/assessment/state summaries
Tools

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

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

Visualization software used : Microsoft Office Excel 2007

Data Bounding

The input object was time bounded starting from January 01, 1900 (00:00 AM)

The input object was time bounded ending at December 31, 2014 (00:00 AM)

The input object was bounded spatially:

This activity resulted in the following :

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