Detecting climate change signals in Saudi Arabia using mean annual surface air temperatures     

M. Almazroui  H. M. Hasanean  A. K. Al-Khalaf  H. Abdel Basset 《Theoretical and Applied Climatology》2013,113(3-4):585-598

Climate change signals in Saudi Arabia are investigated using the surface air temperature (SAT) data of 19 meteorological stations, well distributed across the country. Analyses are performed using cumulative sum, cumulative annual mean, and the Mann–Kendall rank statistical test for the period of 1978–2010. A notable change in SAT for the majority of stations is found around 1997. The results show a negative temperature trend (cooling) for all stations during the first period (1978–1997), followed by a positive trend (warming) in the second period (1998–2010) with reference to the entire period of analysis. The Mann–Kendall test confirms that there is no abrupt cooling at any station during the analysis period, reflecting the warming trend across the country. The warming trend is found to be 0.06 °C/year, while the cooling trend is 0.03 °C/year, which are statistically significant.  相似文献   

Best convective parameterization scheme within RegCM4 to downscale CMIP5 multi-model data for the CORDEX-MENA/Arab domain     

Mansour Almazroui  Md. Nazrul Islam  A. K. Al-Khalaf  Fahad Saeed 《Theoretical and Applied Climatology》2016,124(3-4):807-823

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A climatological study: wet season cyclone tracks in the East Mediterranean region     

Mansour Almazroui  Adel M. Awad  M. Nazrul Islam  A. K. Al-Khalaf 《Theoretical and Applied Climatology》2015,120(1-2):351-365

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An improvement in mass flux convective parameterizations and its impact on seasonal simulations using a coupled model     

Elsayed Yousef  Ahmed  Ehsan  M. Azhar  Almazroui  Mansour  Assiri  Mazen E.  Al-Khalaf  Abdulrahman K. 《Theoretical and Applied Climatology》2017,127(3-4):779-791

A new closure and a modified detrainment for the simplified Arakawa–Schubert (SAS) cumulus parameterization scheme are proposed. In the modified convective scheme which is named as King Abdulaziz University (KAU) scheme, the closure depends on both the buoyancy force and the environment mean relative humidity. A lateral entrainment rate varying with environment relative humidity is proposed and tends to suppress convection in a dry atmosphere. The detrainment rate also varies with environment relative humidity. The KAU scheme has been tested in a single column model (SCM) and implemented in a coupled global climate model (CGCM). Increased coupling between environment and clouds in the KAU scheme results in improved sensitivity of the depth and strength of convection to environmental humidity compared to the original SAS scheme. The new scheme improves precipitation simulation with better representations of moisture and temperature especially during suppressed convection periods. The KAU scheme implemented in the Seoul National University (SNU) CGCM shows improved precipitation over the tropics. The simulated precipitation pattern over the Arabian Peninsula and Northeast African region is also improved.

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