MCDC Data Types            Monitoring Extreme Weather

Evaluating Climate Trends

MCDC data products are used to evaluate global and regional long-term climate trends linked to changes in geophysical variables.

Atmospheric Temperature Anomalies

The troposphere has been warming at a rate of 0.2 K/decade. On the other hand, the stratosphere has been cooling at a rate of 0.2 K/decade. Natural climate variability would affect both the troposphere and the stratosphere equally. The differing trends across the atmosphere are evidence that the warming is from anthropogenic sources, such as burning fossil fuels.

The temperature of the lower troposphere (TLT) is increasing to a greater extent (0.6 K/decade) in high Northern latitudes than in mid- and low Northern latitudes or in Southern latitudes (up to 0.2 K/decade).

Air-Sea Essential Climate Variables (AS-ECVs):
Trends in the Ocean-Atmosphere Interface

MCDC contains multi-decadal (currently 35 years) Climate Data Records (CDRs) for Air-Sea (AS) variables, all of which are classified as Essential Climate Variables (ECV) by the Global Observing System for Climate. AS-ECVs include near-surface ocean wind speed (m/s), total water vapor above the ocean (mm), total cloud liquid water above the ocean (mm), and sea-surface rain rate (mm/hr). We used Reynolds SST to compare to AS-ECVs because the MCDC SST is a 25-year dataset.

MCDC Data Types Monitoring Extreme Weather