TITLE:
A Recent Study on the Relationship between Global Radiative Forcing and Global Annual Climatic Variability
AUTHORS:
Yehia Yehia Hafez, Mansour Almazroui
KEYWORDS:
Global Radiative Forcing, Global Annual Climatic Variability, Weather Elements, Climatic Indices
JOURNAL NAME:
Atmospheric and Climate Sciences,
Vol.5 No.1,
January
12,
2015
ABSTRACT: The present paper
investigates the relationship between the global radiative forcing (GRF) and
global annual climatic variability. The relation between the GRF and global
annual changes in the operational weather and climatic parameters is uncovered.
There are several datasets which have been used to challenge this goal. The
NCEP/NCAR Reanalysis dataset of several meteorological elements, such as air temperature, wind, surface
pressure, outgoing long wave radiation, precipitation rate and
geopotential height at level 500 hPa, etc. for the globe for the period
(1948-2012), has been used. Furthermore, the GRF data for greenhouse gases
through the period (1979-2010) has been used. Also, datasets of climatic
indices NAO, SOI, El Nino 3.4 and SST during the period (1948-2012) have been
used through this study. Time series analysis, anomaly and correlation coefficient
technique methods have been used to analyze the datasets. The results reveal
that there is an outstanding positive correlation coefficient (more than +0.80)
between GRF and the global annual weather elements of surface air temperature,
temperature and geopotential height at level 500 hPa, precipitation rate and
sea surface temperature. CO2 has a significant correlation coefficient
(+0.89) with the outcomes longwave radiation and sea surface temperature. There
is a significant relationship between the global annual variability of weather
and climatic elements and GHGs, global warming and climatic indices, NAO, SOI, El
Nino 3.4 and SST.