TITLE:
Spatial Analysis Approach in Revealing the Global Sinks of Atmosphere Carbon Dioxide through “Leave One Out” Method
AUTHORS:
Ali Madad, Mossayeb Jamshid, Ali Reza Gharagozlou, Ali Reza Vafaei Nejad, Ali Javidane, Hamid Reza Ranjbar
KEYWORDS:
Carbon Dioxide Sink, Spatial Autocorrelation, Interpolation, Jackknife, Negev Desert
JOURNAL NAME:
Journal of Geographic Information System,
Vol.6 No.4,
August
6,
2014
ABSTRACT:
Global warming and climate
change are the most important ecological issues of our time. The most
well-known factor in this phenomenon is the redundancy of carbon dioxide in the
atmosphere. Over the past 50 years the amount of residual CO2 in the atmosphere has risen from 40%
to 45%. Reducing CO2 redundancy
requires precise knowledge of the gas sources and sinks throughout the
atmosphere. Despite having a leading role in residual gas levels of atmosphere,
the diagnosis and types of changes of absorbing carbon dioxide are very much in
doubt. Atmospheric measurements of CO2 concentrations are highly precise and
provide a reliable measure of increase of CO2 in the atmosphere every year but they
do not lead to the location of sources and sinks. Studies about understanding
CO2 cycles began
mainly around 1990 and most of these studies have been focused on non-spatial
analysis. By ignoring the spatial effects, an important property such as
closeness (adjacent) has been disregarded. The emission sources of gas are
stronger than their sink sources i.e.,
whenever a sink is adjacent to a strong emission source, the measurements will
show a massive existence of CO2 gas
in that region although there exists a fine CO2gas sink at below.
Using the global measurements of CO2 and applying spatial analysis approach
to “Leave One Out” method, our studies reveal the most probable spots of CO2 sources and sinks and that Negev
Desert in Middle East is a distinguished CO2 sink region.