Global Analysis - June 2001

Note: The data presented in this report are preliminary. Ranks and anomalies may change as more complete data are received and processed. Effective September 2012, the GHCN-M version 3.2.0 dataset of monthly mean temperature replaced the GHCN-M version 3.1.0 monthly mean temperature dataset. Beginning with the August 2012 Global monthly State of the Climate Report, released on September 17, 2012, GHCN-M version 3.2.0 is used for NCDC climate monitoring activities, including calculation of global land surface temperature anomalies and trends. For more information about this newest version, please see the GHCN-M version 3.2.0 Technical Report.

*The GHCN-M version 3.1.0 Technical Report was revised on September 5, 2012 to accurately reflect the changes incorporated in that version. Previously that report incorrectly included discussion of changes to the Pairwise Homogeneity Algorithm (PHA). Changes to the PHA are included in version 3.2.0 and described in the version 3.2.0 Technical Report. Please see the Frequently Asked Questions to learn more about this update.

Global Highlights:

  • Global average land and sea surface temperature was the second warmest on record for June
  • Lower tropospheric and stratospheric temperatures were slightly cooler than average during the month
  • Above average precipitation was most notable across the Gulf Coast of the U.S., northern Brazil, northern India and southeast Asia
  

Contents of this Section:
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Top of Page Introduction

Anomalous warmth (based on a 1992-2001 base period as shown in the adjacent blended product of satellite and in-situ data) was dominant across much of Asia and the United States in June. Strong upper level ridges of high pressure (depicted by positive 500 millibar height anomalies) were situated across Alaska, eastern Canada, the central Former Soviet Union (FSU) and northwest Africa. Temperature anomalies calculated from in-situ station data using a 1961-1990 base period also show these warmer than average temperatures, with cooler than average temperatures denoted across much of Europe, northern India and the U.S. Pacific Northwest. Click Here for the Global Blended Temperature in June 2001
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Top of Page Temperature

  • The global land and ocean temperature ranked as the second warmest June in 2001 and was 0.51°C (0.92°F) above the long-term average using an 1880-2000 base period (0.41°C / 0.74°F above the 1961-1990 mean)
  • Temperatures averaged across the Northern Hemisphere ranked second warmest, or 0.64°C (1.15°F) above the June average
  • Land areas of the Southern Hemisphere were slightly cooler than average, a departure of -0.14°C (-0.25°F)
 Click Here for the Global Temp Anomalies in June 2001
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Click Here for the June Extratropical Land Temperatures
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  • The warmest June on record was observed across extratropical areas of the Northern Hemisphere (90°N-20°N), as the combined land and ocean temperature was 0.84°C (1.51°F) above average
  • Using a 1961-1990 base period, the combined land and ocean temperature in the extratropics was 0.77°C (1.39°F) above the 30-year average
  • Temperatures averaged over land areas were the warmest ever for June using an 1880-2000 base period, or 1.15°C (2.07°F) higher than the mean
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Top of Page Precipitation

  • Heavier than average monsoon rains began across northern India, with above average precipitation extending through southeast Asia and parts of eastern China
  • Other areas that were wetter than average included the U.S. Gulf Coast and northern Brazil, with monthly rainfall surpluses locally exceeding 200 mm (7.87 inches)
  • Unusually dry weather was found across the U.S. southern Plains, much of the Mediterranean, southern India and southwest Australia
 Click Here for the Global Precip Anomalies in June 2001 larger image

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References:

Peterson, T.C. and R.S. Vose, 1997: An Overview of the Global Historical Climatology Network Database. Bull. Amer. Meteorol. Soc., 78, 2837-2849.

Citing This Report

NOAA National Climatic Data Center, State of the Climate: Global Analysis for June 2001, published online July 2001, retrieved on May 21, 2013 from http://www.ncdc.noaa.gov/sotc/global/2001/6.