Global Temperature: February Warmest Month

Average temperature anomalies for the lower troposphere in February 2016. Broken lines circle areas that are cooler than seasonal norms and solid line circle areas that are warmer than seasonal norms. Courtesy: UAHAverage temperature anomalies for the lower troposphere in February 2016. Broken lines circle areas that are cooler than seasonal norms and solid line circle areas that are warmer than seasonal norms. Courtesy: UAH

Global atmospheric temperatures in February as measured by satellite instruments and analysed by University of Alabama in Huntsville (UAH) shows that it was the warmest month recorded since satellite monitoring began – following on from the warmest December and the warmest January recorded.

February 2016 was warmest month on record in terms of atmospheric temperatures measured by satellite, according to data released by the UAH.

The mean global temperature anomaly – or variance to the long term average – for the lower troposphere during February was +83oC sharply up on the +0.54oC anomaly reported in January 2016.

Global temperatures were pushed up by unusual warmth in the Arctic as well as by the continuing El Niño Pacific Ocean warming event, according to the UAH analysis.

The UAH result for February 2016 agrees with a different analysis of satellite data by the US firm Remote Sensing Systems (RSS). Both analyses rank the global anomaly for February as warmest in the satellite era.

Here is the text of a news release issued by the University of Alabama in Huntsville regarding temperature data for January 2016:

Global Temperature Report: February 2016

February was warmest month in satellite record

Global climate trend since Nov. 16, 1978: +0.12 C per decade

February temperatures (preliminary)

Global composite temp.: +0.83 C (about 1.50 degrees Fahrenheit) above 30-year average for February.

Northern Hemisphere: +1.17 C (about 2.11 degrees Fahrenheit) above 30-year average for February.

Southern Hemisphere: +0.50 C (about 0.90 degrees Fahrenheit) above 30-year average for February.

Tropics: +0.99 C (about 1.78 degrees Fahrenheit) above 30-year average for February.

January temperatures (revised):

Global Composite: +0.54 C above 30-year average

Northern Hemisphere: +0.69 C above 30-year average

Southern Hemisphere: +0.39 C above 30-year average

Tropics: +0.85 C above 30-year average

(All temperature anomalies are based on a 30-year average (1981-2010) for the month reported.)

Notes on data released March 1, 2016:

By a statistically significant amount, February 2016 was the warmest month in the satellite temperature record, according to Dr. John Christy, director of the Earth System Science Center at The University of Alabama in Huntsville. Interestingly, however, that record might have as much to do with an extraordinarily warm month in the Arctic as it does with warming caused by the El Niño Pacific Ocean warming event.

Globally, the average temperature anomaly in February (+0.83 C) was warmer than the previous record set in April 1998 (+0.74 C) during the so-called “El Niño of the century.”

In the Northern Hemisphere, the February anomaly (+1.17 C) was a full 0.32 C (0.58 F) warmer than the previous NH record (+0.85 C) set in April 1998. Temperatures in the tropics and the Southern Hemisphere were not at record levels in February.

While the Arctic temperature anomaly is large, big temperature swings in the Arctic region aren’t unusual, especially during the winter months. Those swings are also normally somewhat transient, so the extra heat represented in February could dissipate over the next few weeks. If that happens, it doesn’t appear the heat from the El Niño by itself will be enough to continue pushing temperatures to new records later in the year, in which case this February anomaly might stand out as a singular spike in the dataset rather than part of an ongoing trend.

The warmest months in the satellite temperature record are:

Warmest Months, Global

How much warmer than seasonal norms

Feb. 2016   0.83 C

Apr.  1998    0.74 C

Feb.  1998    0.65 C

May  1998    0.64 C

June 1998    0.57 C

Jan.  2016    0.54 C

Aug. 1998    0.52 C

Mar.  2010    0.50 C

Jan.  1998    0.48 C

Mar.  1998    0.47 C

Feb.  2010    0.47 C

Warmest NH Months

Feb. 2016   1.17 C

Apr.  1998    0.85 C

Jan.  2016    0.70 C

Feb.  1998    0.66 C

July  1998    0.65 C

Oct.  2015    0.63 C

June 1998    0.60 C

Jan.  2010    0.60 C

May  2010    0.60 C

Mar.  2010    0.59 C

Warmest Februaries, Global

2016  0.83 C

1998   0.65 C

2010   0.47 C

2002   0.30 C

2003   0.25 C

2004   0.25 C

2007   0.19 C

2015   0.19 C

2005   0.18 C

2006   0.17 C

1999   0.17 C

Compared to seasonal norms, the warmest average temperature anomaly on Earth in February was over north central Russia, near the small town of Beloyarsky. February temperatures there averaged 5.20 C (about 9.36 degrees F) warmer than seasonal norms. Compared to seasonal norms, the coolest average temperature on Earth in February was over the Sea of Okhotsk, between the Russian mainland and the Kamchatka Peninsula, where the average February 2016 temperature was 3.25 C (about 5.85 degrees F) cooler than normal for February.

The complete version 6 beta lower troposphere dataset is available here:

http://vortex.nsstc.uah.edu/data/msu/v6.0beta/tlt/uahncdc_lt_6.0beta5.txt

Archived color maps of local temperature anomalies are available on-line at:

http://nsstc.uah.edu/climate/

As part of an ongoing joint project between UAHuntsville, NOAA and NASA, Christy and Dr. Roy Spencer, an ESSC principal scientist, use data gathered by advanced microwave sounding units on NOAA and NASA satellites to get accurate temperature readings for almost all regions of the Earth. This includes remote desert, ocean and rain forest areas where reliable climate data are not otherwise available.

The satellite-based instruments measure the temperature of the atmosphere from the surface up to an altitude of about eight kilometers above sea level. Once the monthly temperature data are collected and processed, they are placed in a “public” computer file for immediate access by atmospheric scientists in the U.S. and abroad.

Neither Christy nor Spencer receives any research support or funding from oil, coal or industrial companies or organizations, or from any private or special interest groups. All of their climate research funding comes from federal and state grants or contracts.

End of UAH news release.

Source

UAH news release.

UAH data here.

 

Average temperature anomalies for the lower troposphere in February 2016. Broken lines circle areas that are cooler than seasonal norms and solid line circle areas that are warmer than seasonal norms. Courtesy: UAH

Average temperature anomalies for the lower troposphere in February 2016. Broken lines circle areas that are cooler than seasonal norms and solid line circle areas that are warmer than seasonal norms. Courtesy: UAH

Monthly average global temperature anomalies for the lower troposphere from December 1978 through to February 2016. Courtesy: UAH.

Monthly average global temperature anomalies for the lower troposphere from December 1978 through to February 2016. Courtesy: UAH.

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