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Global Climate Report - September 2021

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October US Release: Mon, 8 Nov 2021, 11:00 AM EST

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Report: [Global Climate Report       ] Year: [2021] Month: 
[September   ] [View Report]
 

Additional Resources

Temperature and Precipitation Maps

  * September

Temperature Anomalies Time Series

  * September
  * Year-to-Date

Supplemental Material

  * 2021 Year-to-Date Temperatures Versus Previous Years
  * Global Annual Temperature Rankings Outlook
  * Mean Monthly Temperature Records Across the Globe
  * Monthly Temperature Anomalies Versus El Nino

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Temperature

In the atmosphere, 500-millibar height pressure anomalies correlate
well with temperatures at the Earth's surface. The average position
of the upper-level ridges of high pressure and troughs of low
pressure--depicted by positive and negative 500-millibar height
anomalies on the September 2021 map, is generally reflected by areas
of positive and negative temperature anomalies at the surface,
respectively.