Image Metadata File

Person Submitting Metadata/Point of Contact:

Name: Laura Stevens
Physical Address: 151 Patton Ave Asheville, NC 28801
Organization: CICSNC
Email:
Phone:

Image Info:

Image Title:
Decadal time series of cold wave indices
Image Description:
Time series (1901-2011) of decadal average values of cold wave indices for spells of 4-day duration exceeding the threshold for a 1-in-5 year recurrence, based on daily COOP data from long-term stations in the National Climatic Data Center’s Global Historical Climate Network data set. Only stations with less than 10% missing daily temperature data are used in this analysis. Individual station events are first identified by sorting 4-day running average mean temperature values and selecting the top Y/R events, where Y is the number of years with data and R is the recurrence interval. Then, annual grid box values are calculated as the #events/#stations with data. Finally, regional values are calculated as the average values of the grid boxes within the region. The index values are normalized to a long-term average value of 1.0. Index values that are above (below) average are upward (downward). The horizontal labels indicate the decade. The far right bar in each graph represents the 11-year period of 2001-2011.
Attributes (variables name, description and units):
Relative number of cold spells (/ decade)
Temporal domain:
Start Time: 1895-01-01 00:00:00.0
End Time: 2010-12-31 00:00:00.0
Spatial domain:
Max latitude:
Min latitude:
Max longitude:
Min longitude:
Keywords:
Contiguous U.S., Observed, USGHCN Daily, Temperature
Usage Limitations/Constraints:
Citation of image source:

Image Creation:

Who created the image:
Name: Ken Kunkel
Physical Address:
Organization: CICSNC
Email:
Phone:
When was image created (YYYY-MM-DD):

Data Sources:

Dataset #1
Dataset Name: USGHCN Daily
Dataset Version:
Dataset Description: Global Historical Climatology Network - Daily
Dataset ID:
Dataset Release/Publication Date:
Affiliated Organization Name and Role: NOAA NCDC/Russ Vose
Date Accessed: 2011-06-06 00:00:00.0
Dataset Location (ftp, URL, etc): ftp://ftp.ncdc.noaa.gov/pub/data/ghcn/daily/
Data qualifier (QA/QC, etc):
The denominator of the scale of the source/output:
Spatial Reference system used by the source/output:
Citation to metadata:
Description of the scope of a resource, quality report, or process:
Spatial Extent of the source/output (polygon, box or region name): National
Temporal extent of the source/output: 1895-01-01 to 2011-12-31
Vertical extent of the source/output:
Identifier of the processing level of the source/input:
Spatial resolution of the source/output: 1 km

Processes:

References: