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Abstract
It is well known that in the twentieth century anthropogenic activities have changed the climatic natural
variability to some extent, which resulted in statistically significant increase in the global average temperature. Global
warming has increased both atmospheric and sea-surface temperatures around the world. To study the seawater
temperature fluctuations in the Arabian sea, this communication performs linear trend analysis of Arabian seawater
monthly average temperature data (1871-2009) obtained from Hadley British Climate Centre, UK. The warming trends
(positive for every month) of average seawater temperature data show that the ocean has gained heat from the
atmosphere over the last 150 years. The trend analysis also shows that the ocean rate of heat absorption in the first half
of the twentieth century is higher as compared to the second half. It is clear from the trend values that the winter
warming rate is higher than the summer warming rate. It has also been shown that the Karachi urban monthly maximum
temperature trends are, more or less, similar to the twentieth century Arabian monthly average seawater temperature
fluctuation trends. Its decadal trend values are, more or less, ten times higher than the sea surface temperature trend
values.
References
Hussain MA. Mathematical Aspects of Impact of Urban Greenhouse Gas Emissions on Global Warming. Ph. D. Thesis. Federal Urdu University, Karachi, Pakistan 2008.
Naeem A, Qureshi MS. Climatic Variability and Linear Trend Models for the Five Major Cities of Pakistan. J Geogr Geol 2010; 2(1): 83-2.
Briggs D, et al. Fundamentals of the Physical Environment, 2nd ed. Routledge, London 1997.
Pinet PR. Invitation to Oceanography. Jones and Bartlett, Boston 1998.
Yousufzai MAK. A Quantitative Study of Effects of Ozone Layer Depletion On Marine Organism with Reference to Coastal Regions of Pakistan. Ph. D. Thesis. University of Karachi, Pakistan 2003.
Yousufzai MAK, Ansari MRK, Iqbal J, Hussain MA. Wavelet Characterization of ozone layer depletion for atmospheric region of Pakistan. Proceedings of 35th All Pakistan Science Conference, University of Karachi, Pakistan, 2008; from 20- 23 Dec.
Hussain MA, Ansari MRK, Statistical Aspects of Global Warming Dynamics. Arabian Journal for Science and Engg Saudi Arabia 2007; 32(2A): 189.
Hussain MA, Ansari MRK. Some Insights of Local And Global Temperatures Dynamics. Arabian Journal for Science and Engg Saudi Arabia 2009; 31(2A): 178-186.
Krishna KM. Coastal upwelling along the West Coast of India – ENSO Modulation. Ocean Sci Discuss 2008; 5: 123-134. Maggie L IPCC. IPCC Fourth Assessment Report, Working Group 1 2008.
Khan TMA, et al. Seasonal and Interannual Sea Surface Temperature Variability in the Coastal Cities of Arabian Sea and Bay of Bengal. Natural Hazards 2004; 31(2): 549. http://dx.doi.org/10.1023/B:NHAZ.0000023367.66009.1d
Khan TMA, et al. Recent Sea level and Sea Surface Temperature Trends along Bangladesh Coast in Relation to the Frequency of Intense Cyclones. Mar Geodesy 2004; 23(2): 103-116.
Folland CK, Coauthors. Observed climate variability and change. Climate Change 2001: The Scientific Basis: Contribution of the Intergovernmental Panel on Climate Change. J. T. Houghton et al., Eds, Cambridge University Press, Cambridge: 2001.
Gille, Sarah T. Decadal-Scale Temperature Trends in the Southern Hemisphere Ocean. J Climate 2008; 21: 4749- 4765. http://dx.doi.org/10.1175/2008JCLI2131.1
Hothorn LA. Trend Tests in Epidemiology: P-Values or Confidence Intervals?’ Biometrical J 1999; 41(7): 817-825. http://dx.doi.org/10.1002/(SICI)1521- 4036(199911)41:73.0.CO;2-C
Hussain MA, et al. Forecast Models for Urban Extreme Temperatures: Karachi Region as a Case Study. NUCLEUS 2010; 47(4): pp. 301-311.
Khan TMA, et al. Sea Surface Temperature Variability Along Pakistan Coast and its Relation to El Nino-Southern Oscillation. J Basic Appl Sci 2008; 4(2): pp 67-72, ISSN: 1814-8085.
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