Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Global Temperature Report: September 2009

16.10.2009
A relatively routine El Nino Pacific Ocean warming event shouldn't cause the hottest tropical September in the past 31 years, but it did, according to Dr. John Christy, professor of atmospheric science and director of the Earth System Science Center at The University of Alabama in Huntsville.

On top of a record-setting month in the tropics, September 2009 was also the second warmest September on record both globally and in the Northern Hemisphere.

"Who would have predicted those temperatures in the atmosphere when the sea surface temperature has been bumping along so nonchalantly?" Christy asked.

Normally, warming in the atmosphere during an El Nino is somewhat linked to rising sea surface temperatures in the Equatorial Pacific. Atmospheric temperatures in September, however, were significantly warmer than might have been predicted based on sea surface temps.

"Sea surface temps for September in a key region of the Pacific were on the order of 0.83 C warmer than average, and the tropical atmosphere was 0.51 C warmer than seasonal norms," Christy said. "We've seen water temps about this warm twice in the past decade (2004-2005 and 2006-2007) without seeing this surge in the atmosphere.

"If you go back to the big El Nino of 1997-1998, sea surface temps (SSTs) in September 1997 in that same part of the Pacific were about 2.29 C warmer than normal, but the tropical atmosphere was only 0.4 C above average.

"Other things drive atmospheric temperatures in addition to SSTs, so it seems this would have been a warm September even without the El Nino."

Bands of air warmer than seasonal norms circled the Equator in September, while also cover much of the Central Pacific, Northern and Southeastern Asia, and Africa. Warmer air stretched in one wide band from the Antarctic across Australia, the Philippines, China and Siberia into the Arctic.

Compared to seasonal norms, the warmest air (as much as 5.5 C warmer than season norms) covered most of Canada -- although some ski resorts in portions of the Western U.S. are opening at the earliest dates on record.

Global climate trend since Nov. 16, 1978: +0.13 C per decade

September temperatures (preliminary)

Global composite temp.: +0.42 C (about 0.76 degrees Fahrenheit) above
20-year average for September.
Northern Hemisphere: +0.55 C (about 0.99 degrees Fahrenheit) above 20-year
average for September.
Southern Hemisphere: +0.30 C (about 0.54 degrees Fahrenheit) above 20-year
average for September.
August temperatures (revised):
Global Composite: +0.23 C above 20-year average
Northern Hemisphere: +0.28 C above 20-year average
Southern Hemisphere: +0.18 C above 20-year average
(All temperature variations are based on a 20-year average (1979-1998) for
the month reported.)
Warmest Septembers, Tropics
(20 N to 20 S latitude, from about Havana in the north to Rio de Janeiro
in the south)
2009 +0.51 C
1987 +0.42 C
1997 +0.40 C
1998 +0.28 C
2005 +0.23 C
1995 +0.20 C
1980 +0.13 C
2002 +0.11 C
1983 +0.10 C
1991 +0.10 C
Warmest Septembers, Global
1998 +0.43 C
2009 +0.42 C
2005 +0.35 C
2002 +0.28 C
1988 +0.28 C
2006 +0.27 C
2003 +0.23 C
1995 +0.23 C
2007 +0.20 C
1980 +0.19 C
* * *
As part of an ongoing joint project between The University of Alabama in
Huntsville, NOAA and NASA, Christy and Dr. Roy Spencer, a principal
research scientist in the ESSC, use data gathered by 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 for which 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 is collected and processed, it is
placed in a "public" computer file for immediate access by atmospheric
scientists in the U.S. and abroad.
Neither Spencer nor Christy 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
state and federal grants or contracts.
Dr. John Christy, UAH, (256) 961-7763
john.christy@nsstc.uah.edu
Dr. Roy Spencer, UAH, (256) 961-7960
roy.spencer@nsstc.uah.edu

Dr. John Christy | Newswise Science News
Further information:
http://www.nsstc.uah.edu

More articles from Earth Sciences:

nachricht New insights into the ancestors of all complex life
29.05.2017 | University of Bristol

nachricht A 3-D look at the 2015 El Niño
29.05.2017 | NASA/Goddard Space Flight Center

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: New Method of Characterizing Graphene

Scientists have developed a new method of characterizing graphene’s properties without applying disruptive electrical contacts, allowing them to investigate both the resistance and quantum capacitance of graphene and other two-dimensional materials. Researchers from the Swiss Nanoscience Institute and the University of Basel’s Department of Physics reported their findings in the journal Physical Review Applied.

Graphene consists of a single layer of carbon atoms. It is transparent, harder than diamond and stronger than steel, yet flexible, and a significantly better...

Im Focus: Strathclyde-led research develops world's highest gain high-power laser amplifier

The world's highest gain high power laser amplifier - by many orders of magnitude - has been developed in research led at the University of Strathclyde.

The researchers demonstrated the feasibility of using plasma to amplify short laser pulses of picojoule-level energy up to 100 millijoules, which is a 'gain'...

Im Focus: Can the immune system be boosted against Staphylococcus aureus by delivery of messenger RNA?

Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.

Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....

Im Focus: A quantum walk of photons

Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.

The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

 
Latest News

3D printer inks from the woods

30.05.2017 | Life Sciences

How circadian clocks communicate with each other

30.05.2017 | Life Sciences

Graphene and quantum dots put in motion a CMOS-integrated camera that can see the invisible

30.05.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>