scholarly journals Analysis and Comparison of Trends in Extreme Temperature Indices in Riyadh City, Kingdom of Saudi Arabia, 1985–2010

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Ali S. Alghamdi ◽  
Todd W. Moore

This study employed the time series of thirteen extreme temperature indices over the period 1985–2010 to analyze and compare temporal trends at two weather stations in Riyadh city, Saudi Arabia. The trend analysis showed warming of the local air for the city. Significant increasing trends were found in annual average maximum and minimum temperatures, maximum of minimum temperature, warm nights, and warm days for an urban and a rural station. Significant decreasing trends were detected in the number of cool nights and cool days at both stations. Comparison of the trends suggests that, in general, the station closer to the city center warmed at a slower rate than the rural station. Significant differences were found in a lot of the extreme temperature indices, suggesting that urbanization and other factors may have had negative effects on the rate of warming at the urban station.

2021 ◽  
Vol 164 (3-4) ◽  
Author(s):  
Xiaoying Xue ◽  
Guoyu Ren ◽  
Xiubao Sun ◽  
Panfeng Zhang ◽  
Yuyu Ren ◽  
...  

AbstractThe understanding of centennial trends of extreme temperature has been impeded due to the lack of early-year observations. In this paper, we collect and digitize the daily temperature data set of Northeast China Yingkou meteorological station since 1904. After quality control and homogenization, we analyze the changes of mean and extreme temperature in the past 114 years. The results show that mean temperature (Tmean), maximum temperature (Tmax), and minimum temperature (Tmin) all have increasing trends during 1904–2017. The increase of Tmin is the most obvious with the rate of 0.34 °C/decade. The most significant warming occurs in spring and winter with the rate of Tmean reaching 0.32 °C/decade and 0.31 °C/decade, respectively. Most of the extreme temperature indices as defined using absolute and relative thresholds of Tmax and Tmin also show significant changes, with cold events witnessing a more significant downward trend. The change is similar to that reported for global land and China for the past six decades. It is also found that the extreme highest temperature (1958) and lowest temperature (1920) records all occurred in the first half of the whole period, and the change of extreme temperature indices before 1950 is different from that of the recent decades, in particular for diurnal temperature range (DTR), which shows an opposite trend in the two time periods.


2018 ◽  
Vol 2018 ◽  
pp. 1-26
Author(s):  
Wei Wei ◽  
Baitian Wang ◽  
Kebin Zhang ◽  
Zhongjie Shi ◽  
Genbatu Ge ◽  
...  

In order to examine temperature changes and extremes in the Beijing-Tianjin Sand Source Region (BTSSR), ten extreme temperature indices were selected, categorized, and calculated spanning the period 1960–2014, and the spatiotemporal variability and trends of temperature and extremes on multitimescales in the BTSSR were investigated using the Mann-Kendall (M-K) test, Sen’s slope estimator, and linear regression. Results show that mean temperatures have increased and extreme temperature events have become more frequent. Annual temperature has recorded a significant increasing trend over the BTSSR, in which 51 stations exhibited significant increasing trends (p<0.05); winter temperature recorded the most significant increasing trend in the northwest subregion. All extreme temperature indices showed warming trends at most stations; a higher warming slope in extreme temperature mainly occurred along the northeast border and northwest border and in the central-southern mountain area. As extreme low temperature events decrease, vegetation damage due to freezing temperatures will reduce and low cold-tolerant plants may expand their distribution range northward to revegetate barren areas in the BTSSR. However, in water-limited areas of the BTSSR, increasing temperatures in the growing season may exacerbate stress associated with plants relying on precipitation due to higher temperatures combining with decreasing precipitation.


2020 ◽  
Vol 4 (4) ◽  
Author(s):  
Nurwan Nurwan ◽  
Ali Hadara ◽  
La Batia

ABSTRAK: Inti pokok masalah dalam penelitian ini meliputi latar belakang gerakan sosial masyarakat Kampung Labaluba Desa Kontumere Kecamatan Kabawo Kabupaten Muna, Faktor-faktor yang mendorong gerakan sosial masyarakat Kampung Labaluba Desa Kontumere Kecamatan Kabawo Kabupaten Muna, proses gerakan sosial masyarakat Kampung Labaluba Desa Kontumere Kecamatan Kabawo Kabupaten Muna dan akibat gerakan sosial masyarakat Labaluba Desa Kontumere Kecamatan Kabawo Kabupaten Muna? Latar belakang gerakan sosial masyarakat Kampung Labaluba yaitu keadaan kampungnya yang hanya terdiri dari beberapa kepala keluarga tiap kampung dan jarak yang jauh masing-masing kampung membuat keadaan masyarakatnya sulit untuk berkomnikasi dan tiap kampung hanya terdiri dari lima sampai dengan tujuh kepala keluarga saja. Kampung ini letaknya paling timur pulau Muna terbentang dari ujung kota Raha sekarang sampai kampung Wakuru yang saat ini. Kondisi ini juga yang menjadi salah satu faktor penyebab kampung ini kurang berkembang baik dibidang ekonomi, sosial politik, pendidikan maupun di bidang kebudayaan. Keadaan ini diperparah lagi dengan sifat dan karakter penduduknya yang masih sangat primitif. Faktor yang mendorong adanya gerakan sosial masyarakat Kampung Labaluba Desa Kontumere Kecamatan Kabawo Kabupaten Muna adalah adanya ketidaksesuaian antara keinginan pemerintah setempat dan masyarakat yang mendiami Kampung Labaluba pada waktu itu. Sedangkan proses gerakan sosial masyarakat Kampung Labaluba Desa Kontumere Kecamatan Kabawo Kabupaten Muna bermula ketika pemerintah seolah memaksakan kehendaknya kepada rakyat yang menyebabkan rakyat tidak setuju dengan kebijakan tersebut. Akibat yang ditimbulkan dari adanya gerakan sosial masyarakat Kampung Labaluba Desa Kontumere Kecamatan Kabawo Kabupaten Muna terbagi dua yaitu akibat positif dan akibat negatif.Kata Kunci: Gerakan Sosial, Factor dan Dampaknya ABSTRACT: The main issues in this study include the background of the social movement of Labaluba Village, Kontumere Village, Kabawo Sub-District, Muna District, Factors that encourage social movements of Labaluba Kampung Sub-village, Kontumere Village, Kabawo Sub-District, Muna District, the social movement process of Labaluba Village, Kontumere Village, Kabawo Sub-District Muna Regency and due to Labaluba community social movements Kontumere Village Kabawo District Muna Regency? The background of the Labaluba Kampung community social movement is that the condition of the village consists of only a few heads of households per village and the distance of each village makes it difficult for the community to communicate and each village only consists of five to seven households. This village is located east of the island of Muna stretching from the edge of the city of Raha now to the current village of Wakuru. This condition is also one of the factors causing the village to be less developed in the economic, social political, educational and cultural fields. This situation is made worse by the very primitive nature and character of the population. The factor that motivated the existence of the social movement of Labaluba Village in Kontumere Village, Kabawo Subdistrict, Muna Regency was the mismatch between the wishes of the local government and the people who inhabited Labaluba Village at that time. While the process of social movements in Labaluba Village, Kontumere Village, Kabawo District, Muna Regency began when the government seemed to impose its will on the people, causing the people to disagree with the policy. The consequences arising from the existence of social movements in Labaluba Village, Kontumere Village, Kabawo District, Muna Regency are divided into two, namely positive and negative effects. Keywords: Social Movements, Factors and their Impacts


2020 ◽  
Author(s):  
Mayda Alrige ◽  
Hind Bitar Bitar ◽  
Maram Meccawi ◽  
Balakrishnan Mullachery

BACKGROUND Designing a health promotion campaign is never an easy task, especially during a pandemic of a highly infectious disease, such as Covid-19. In Saudi Arabia, many attempts have been made toward raising the public awareness about Covid-19 infection-level and its precautionary health measures that have to be taken. Although this is useful, most of the health information delivered through the national dashboard and the awareness campaign are very generic and not necessarily make the impact we like to see on individuals’ behavior. OBJECTIVE The objective of this study is to build and validate a customized awareness campaign to promote precautionary health behavior during the COVID-19 pandemic. The customization is realized by utilizing a geospatial artificial intelligence technique called Space-Time Cube (STC) technique. METHODS This research has been conducted in two sequential phases. In the first phase, an initial library of thirty-two messages was developed and validated to promote precautionary messages during the COVID-19 pandemic. This phase was guided by the Fogg Behavior Model (FBM) for behavior change. In phase 2, we applied STC as a Geospatial Artificial Intelligence technique to create a local map for one city representing three different profiles for the city districts. The model was built using COVID-19 clinical data. RESULTS Thirty-two messages were developed based on resources from the World Health Organization and the Ministry of Health in Saudi Arabia. The enumerated content validity of the messages was established through the utilization of Content Validity Index (CVI). Thirty-two messages were found to have acceptable content validity (I-CVI=.87). The geospatial intelligence technique that we used showed three profiles for the districts of Jeddah city: one for high infection, another for moderate infection, and the third for low infection. Combining the results from the first and second phases, a customized awareness campaign was created. This awareness campaign would be used to educate the public regarding the precautionary health behaviors that should be taken, and hence help in reducing the number of positive cases in the city of Jeddah. CONCLUSIONS This research delineates the two main phases to developing a health awareness messaging campaign. The messaging campaign, grounded in FBM, was customized by utilizing Geospatial Artificial Intelligence to create a local map with three district profiles: high-infection, moderate-infection, and low-infection. Locals of each district will be targeted by the campaign based on the level of infection in their district as well as other shared characteristics. Customizing health messages is very prominent in health communication research. This research provides a legitimate approach to customize health messages during the pandemic of COVID-19.


2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Reema M. Alhussein ◽  
Mansoor M. Albarrak ◽  
Abdulaziz A. Alrabiah ◽  
Nawfal A. Aljerian ◽  
Hashim M. Bin Salleeh ◽  
...  

Abstract Background Most sudden cardiac arrests occur at home, with low rates of bystander cardiopulmonary resuscitation being performed. We aimed to assess knowledge of cardiopulmonary resuscitation among individuals in Riyadh City, Saudi Arabia, who are not involved in health care. Methods A community-based cross-sectional study was conducted between January and February 2020 in 4 different areas in Riyadh City: North, South, East, and West. The participants were surveyed using a validated self-administered questionnaire. The Statistical Package for Social Sciences version 25.0 was used for inferential statistics and binary logistic regression analysis. Results A total of 856 participants completed the questionnaire, 51.8% were unaware of cardiopulmonary resuscitation. Only 4.4% of the participants had attended a formal cardiopulmonary resuscitation training course, 5.1% were campaign attendees, and 38.7% acquired their experience through the media. Having a higher level of education was positively associated with having knowledge of cardiopulmonary resuscitation. The main concern among attendees of cardiopulmonary resuscitation training courses and campaigns was legal issues, whereas inadequate knowledge was the major barrier for those who had learned about cardiopulmonary resuscitation through the media. Conclusion The level of knowledge of cardiopulmonary resuscitation among non-health care individuals in Riyadh City was found to be insufficient. Therefore, coordinated efforts among different authorities should be considered to implement a structured strategy aiming to increase awareness and knowledge of cardiopulmonary resuscitation among non-health care individuals.


2021 ◽  
Vol 36 (3) ◽  
Author(s):  
Ahmed K. Abd El-Aal ◽  
Mohamed K. Salah ◽  
Mohammad Khalid Ansari ◽  
Mashud Ahmad ◽  
Trilok Nath Singh

2021 ◽  
Vol 78 (5) ◽  
pp. 364-370
Author(s):  
Rubing Pan ◽  
Qizhi Wang ◽  
Weizhuo Yi ◽  
Qiannan Wei ◽  
Jian Cheng ◽  
...  

ObjectiveWe aimed to examine the temporal trends of the association between extreme temperature and schizophrenia (SCZ) hospitalisations in Hefei, China.MethodsWe collected time-series data on SCZ hospitalisations for 10 years (2005–2014), with a total of 36 607 cases registered. We used quasi-Poisson regression and distributed lag non-linear model (DLNM) to assess the association between extreme temperature (cold and heat) and SCZ hospitalisations. A time-varying DLNM was then used to explore the temporal trends of the association between extreme temperature and SCZ hospitalisations in different periods. Subgroup analyses were conducted by age (0–39 and 40+ years) and gender, respectively.ResultsWe found that extreme cold and heat significantly increased the risk of SCZ hospitalisations (cold: 1st percentile of temperature 1.19 (95% CI 1.04 to 1.37) and 2.5th percentile of temperature 1.16 (95% CI 1.03 to 1.31); heat: 97.5th percentile of temperature 1.37 (95% CI 1.13 to 1.66) and 99th percentile of temperature 1.38 (95% CI 1.13 to 1.69)). We found a slightly decreasing trend in heat-related SCZ hospitalisations and a sharp increasing trend in cold effects from 2005 to 2014. However, the risk of heat-related hospitalisation has been rising since 2008. Stratified analyses showed that age and gender had different modification effects on temporal trends.ConclusionsThe findings highlight that as temperatures rise the body’s adaptability to high temperatures may be accompanied by more threats from extreme cold. The burden of cold-related SCZ hospitalisations may increase in the future.


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