CLIMATE CHANGE EVIDENCE AND DETECTION

CLIMATE CHANGE DETECTION www.icpac.net

The global mean temperature are rising faster with time
Since the TAR,progress has been made in understanding how climate is changing in space and time gained  through:
-Improvements and extensions of numerous datasets and analyses
-Broader geographical coverage
-Better understanding of uncertainties
-Wider variety of measurements

Direct Observations of Recent Climate change
1. Global mean temperature
2. Global average sea level
3. Northern hemisphere snow cover

Climate Change Attribution
-Attribution of recent climate change is the effort to scientifically ascertain the mechanisms responsible for the observed changes in the earth's climate
-Efforts have focused on changes observed during the period of instrumental temperature records

 CLIMATE DATA SOURCES

1. Insitu-observed (observed) data
-Hydrometeorological stations e.g. NMHDSs
-Agromet Research Centres

2. Modelling data
-Global or regional climate producing centres