activity : cssr-c137-4373-a4cc-process


The visualization was created using ArcMAP 10.3. Specifically, the station values in ASCII form were converted to a Shapefile. Each station value was assigned to a category and then mapped using an NCA color scheme.

1. Stations were chosen with less than 10% missing data for the period of 1900-2015. 2. For each station, for each year, the lowest value of daily minimum temperature was identified for each year of 1901 to 2016. If there were less than 300 non-missing values of daily minimum temperature in a year, the lowest value of daily minimum temperature was set to missing. 3. For each station, the annual average was computed for 1901-1960 and 1985-2016. Then the average for the first period was subtracted from the average for the second period.

Output artifacts generated by this activity :
Russell Vose's NCEI laptop (c:\rvose\projects\cssr\tnn_map.png) 	
changes_in_tnn_txx.mxd stations19002015_90.temp 

Computing environment : Centos; Red Hat Enterprise Linux Server release 7.3

Software used : SAS version 9.2; FORTRAN (G95 (GCC 4.0.3 (g95 0.94!)); ArcMAP 10.2

Visualization software used : ArcMAP 10.3.

This activity resulted in the following :

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