HadGHCNDEX - Gridded Daily Temperature Extremes

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HadGHCNDEX - Gridded Daily Temperature Extremes
Main content

HadGHCND (aka HadGHCNDEX) is a gridded daily dataset of near-surface maximum (TX) and minimum (TN) temperature observations. Anomalies (departures from 1961-1990 climatology) and actual temperatures are distributed in two separate files. The dataset is designed primarily for the analysis of climate extremes and also for climate model evaluation. It spans the years 1950 to present and is available on a 2.5° latitude by 3.75° longitude grid. The data are gridded using an angular distance weighting scheme. Input data consists of approximately 3000 stations within the Global Historical Climatology Network (GHCN) daily data base. Stations with 20 or more years of record were selected for gridding.

Key Strengths

Key Strengths

Long record of daily temperature extremes

Key Limitations

Key Limitations

Fewer indices than GHCHNDEX or HadEX2

Sparse coverage in Southern Hemisphere and Tropics

Please cite data sources, following the data providers' instructions
Suggested Data Citation
Dataset DOIs
Hosted Climate Index Files
Usage Restrictions

Key Figures

Climate Data Guide Image: HadGHCND

HadGHCND daily maximum temperature anomalies for 1 Jan 2007 and 5 July 2. (Climate Data Guide; D. Shea)

Other Information

Earth system components and main variables
Type of data product
Dataset collections

Years of record
Data time period extended
Yes, data set is extended
Input Data

station data

Vertical Levels:
Missing Data Flag
Missing data present
Ocean or Land
Land Only
Spatial Resolution

2.5 x 3.75

Model Resolution (reanalysis)
Data Assimilation Method
Model Vintage (reanalysis)