2026-07-31

Climate Variability and Change in the Horn of Africa: Past Trends, Future Projections, and Adaptation Pathways

A Comprehensive Multi-Study Analysis of Temperature and Precipitation (1953–2100)

馃搶 Overview
This research program presents a comprehensive, multi-faceted analysis of climate variability and change in the Republic of Djibouti, covering temperature trends, precipitation projections, climate teleconnections, and data quality control. The work spans from the mid-20th century to the year 2100, utilizing both observational datasets and global/regional climate model simulations. The ultimate goal is to provide reliable, high-quality climate information to support adaptation planning, natural disaster prevention, and sustainable development in one of the world's most climate-sensitive regions.













1. Quality Control of Daily Air Temperature (Tx, Tn) and Relative Humidity Data
Objective

This study presents a comprehensive quality control procedure applied to daily meteorological time series, focusing on three key climate variables: maximum temperature (Tx), minimum temperature (Tn), and relative humidity. The primary goal is to ensure the reliability and consistency of the data prior to further climatological or environmental analyses.

Methodology
The quality control strategy incorporates multiple statistical techniques:
Peak and valley analysis to detect unusual daily fluctuations,
Outlier detection using both the Z-score method (based on standard deviations from the mean) and the Interquartile Range (IQR) method (based on percentiles), which are compared for robustness,
Homogeneity testing to identify non-climatic breaks or shifts in the time series,
Breakpoint detection to locate significant change points that may indicate instrumentation errors or station relocations.

Findings & Applications
The application of these methods allows for the identification and flagging of suspect data points, thereby improving the overall quality of the climate database. The work also briefly touches upon the potential intersection with health data, suggesting that such quality-controlled climate records could be used for epidemiological studies (e.g., heatwave impact on public health).

Conclusion & Perspectives
The work provides a set of recommendations for routine quality assurance of climate data. Future perspectives include the automation of the QC process, integration with additional variables, and deeper exploration of climate-health linkages.




2. Comprehensive Analysis and Validation of Temperature Data at Djibouti Airport (1966–2019)

Context & Objective
This study presents a statistical analysis of temperature records collected at the Djibouti Airport meteorological station over a 54-year period (1966–2019). The objective is to characterize long-term trends, variability, and potential shifts in local surface air temperature (Tas) in one of the hottest and most climate-sensitive regions of the world.

Data & Methodology
The analysis is based on daily and monthly temperature observations from the Djibouti Airport station. Statistical techniques are applied to detect:
Long-term trends (warming or cooling),
Interannual and seasonal variability,
Possible breakpoints or abrupt changes in the time series.

Expected Outcomes
The findings will provide a reliable baseline for understanding local climate evolution in Djibouti, support validation of satellite and reanalysis products (e.g., ERA5, CHIRPS), and contribute to climate risk assessments (heatwaves, energy demand, health impacts). This work also serves as a foundation for future downscaling and projection studies.




3. Study of Temporal Variability of Temperature in Djibouti (1966–2019)

Context & Problem Statement
This study investigates the temporal variability of daily minimum and maximum temperatures recorded at the Djibouti Aviation Station over the period 1966–2019. A major challenge addressed is the homogeneity problem in the daily temperature series, which may result from station relocations, instrumentation changes, or other non-climatic factors.

Objectives
The research has three main objectives:
To detect and correct inhomogeneities in the daily temperature time series using statistical breakpoint detection methods.
To characterize the seasonality and long-term trends in temperature variability.
To evaluate the relationships between temperature and other climatic phenomena, including humidity and Sea Surface Temperature (SST).

Data & Methodology
The analysis relies on two main datasets provided by the U.S. National Oceanic and Atmospheric Administration (NOAA):
GSOD (Global Summary of the Day) – for the Djibouti-Ambouli station (coordinates: 11.550°N, 43.133°E) and Djibouti station (11.550°N, 43.150°E).
GHCN (Global Historical Climatology Network) – for additional reference and cross-validation (including the King Abdullah Bin Abdulaziz station in Saudi Arabia as a regional reference).
Homogeneity testing is performed using Pettitt's test on deseasonalized series to identify change points (breakpoints) in the temperature records.

Expected Outcomes & Perspectives
The study will:
Provide a homogenized, reliable temperature dataset for Djibouti,
Quantify the influence of large-scale drivers (SST, humidity) on local temperature extremes,
Support climate monitoring and early warning systems in the region.
Future perspectives include extending the analysis to other variables, improving statistical downscaling, and contributing to climate adaptation planning.





4. Interannual Variability of Daily Maximum (TX) and Minimum (TN) Temperatures (1953–2023)

Context & Objective
This study investigates the interannual variability of daily maximum (TX) and minimum (TN) temperatures in the Republic of Djibouti over a 70-year period (1953–2023). The primary objective is to understand how large-scale climate drivers influence local temperature patterns across different seasons.

Methodology
The analysis focuses on the relationships between temperature extremes and key modes of climate variability, including:
ENSO (El Ni帽o–Southern Oscillation) – during both the JJA (June–July–August) and DJF (December–January–February) seasons,
IOD (Indian Ocean Dipole) – during JJA and DJF,
Sea Surface Temperature (SST) – analyzed separately for DJF and JJA,
MJO (Madden–Julian Oscillation) – during DJF,
Seasonal transitions, particularly from JJA to SON (September–October–November).

Expected Outcomes
By examining these teleconnections, the study aims to identify which large-scale oceanic–atmospheric phenomena most significantly modulate daily temperature extremes in Djibouti. The results will contribute to a better understanding of regional climate dynamics and support future climate adaptation strategies.




5. Future Precipitation Projections in the Republic of Djibouti by 2100

Context & Objective
The Republic of Djibouti faces significant climatic challenges, particularly regarding water resources and natural hazard prevention. However, the country suffers from a scarcity of long-term, high-quality daily observational data. This study aims to fill this gap by using statistical downscaling techniques applied to outputs from Global Climate Models (GCMs) and Regional Climate Models (RCMs). The main objectives are to predict future precipitation trends and variability in Djibouti by the year 2100.

Data & Models
The research relies on:
Observational/reference datasets: CHIRPSv.2 and ERA5-Land,
Model simulations from CMIP5, CMIP6, and the CORDEX regional downscaling initiative.

Key Findings
Daily precipitation from CHIRPSv.2 and ERA5-Land closely resembles the observed interannual variability, making them suitable reference datasets.
Under the RCP 4.5 and RCP 8.5 scenarios (CMIP5-CORDEX-CMIP6 ensembles), total annual precipitation is projected to increase between 4.36 and 23.03 mm/year by 2100.
The mean precipitation variation is estimated to range from −3.85% to +625.59%, corresponding to an absolute range of 142.89 to 1078.9 mm/year between 2006 and 2100.

Conclusions & Perspectives
The study confirms a general upward trend in precipitation, though with high inter-model and inter-scenario variability.
The results will be used to produce a recommendation document aimed at strengthening natural disaster prevention in a context of climate change. Specific applications include:
Identifying months with precipitation exceeding 500 mm/year (flood risk),
Determining maximum drought duration at short, medium, and long term.



馃Л Synthesis and Future Directions
Taken together, these five complementary studies form a coherent and integrated research framework for climate science in Djibouti. They address the full data value chain – from quality control and homogenization of observations, through statistical analysis of trends and variability, to future projections of temperature and precipitation under climate change.

Key Cross-Cutting Themes:
Data reliability is ensured through rigorous QC and homogeneity testing.
Understanding of current climate is achieved through trend analysis and teleconnection studies.
Future preparedness is supported through downscaled projections and risk assessments.

Future Research Perspectives:
Automation of quality control procedures for operational use,
Integration of additional climate variables (wind, radiation, evapotranspiration),
Deeper exploration of climate–health linkages,
Development of user-friendly climate services for decision-makers and local communities,
Enhancement of statistical and dynamical downscaling techniques.

馃摎 Keywords
Climate variability · Temperature trends · Precipitation projections · Quality control · Homogeneity testing · Downscaling · ENSO · IOD · SST · Djibouti · Horn of Africa · CMIP5 · CMIP6 · CORDEX · CHIRPS · ERA5-Land · Pettitt's test · Climate adaptation

馃檹 Acknowledgements
The author gratefully acknowledges the Centre d'脡tudes et de Recherche de Djibouti (CERD) et Centre de Recherches de climatologie (CRC) for their institutional support. Thanks are also extended to the National Oceanic and Atmospheric Administration (NOAA) for providing open-access climate data (GSOD, GHCN), and to the CMIP5/CMIP6 and CORDEX programs for making climate model outputs available.

Contact:
Abdi-Basid ADAN
Email: abdi-basid@outlook.com



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2026-07-25

Economic Growth and Sustainable Development in Africa: An Application of Advanced Statistical and Econometric Methods

This study investigates the relationships between economic growth, sustainable development, and environmental dynamics in Africa from 1960 to 2016. Using statistical and econometric techniques, we analyze the interaction between growth, physical capital, and human capital within the augmented Solow model. 

A static, dynamic, and spatial approach is applied to examine the conditional convergence of African economies. Additionally, we explore the Kuznets Environmental Curve, assessing the relationship between economic growth and environmental degradation, particularly CO₂ emissions.

The findings highlight a continent with significant economic potential, influenced by both positive and negative effects of globalization, including the challenges of greenhouse gas emissions and income inequality.
 
The study offers new insights into the complex relationship between economic growth and sustainability in Africa.   
Keywords: Economic Growth, CO₂ Emissions, Income Inequality, Sustainable Development, Africa.


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馃彌️ tABCi Laboratories :


馃И Abdi-Basid ADAN LABS  | Focus: Interdisciplinary Sciences & Education.

馃 The Deep Thinking Lab | Focus: Philosophy & Human Sciences.

馃實 The EcoClimate Hub | Focus: Climate Science & Environment.

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Click below to view the full Course Catalogue :

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The Principles of the Soul

One even more remarkable thing is that the soul, this vital breath does not age, unlike 
the body, which also represents an object whose the subject is not the Man but the soul. 
Moreover, the afterlife is marked by the disparity of family ties that unite several individuals easily structured into a family tree. Could it be then the root cause of life after death? Which is sure is that the descendants are rather founded by a link of organization and not of a procreation by vital breath. It is unfortunate to see also  biology, completely absent on the clearing of a no derisory component of the  life. It is also noted that the soul is not admirer of the truth. Nothing but the fact of  being incorporated into a body gives him the will to hide and by this fact to move away from the truth. Nature and the human organism are interrelated by the component of the drive, which pushes the living being to ensure an offspring allowing overpopulation on Earth. Similarly nature and the living being are also connected by the cable of consumption. 

In general, addiction is complex than we imagine, in this sense, life depends on the soul and the body also depends on it. Similarly, nature, in turn, flows from the organism, the reason for which is supposed to protect endangered species for 
the maintenance of the biodiversity.

Abdi-Basid ADAN, 2018.

That's the soul

 

Do we this time attach to the pure and simple principles of the soul? It is obvious that it is a subject in the metaphysical domain, a rather complex theme that no science seems to explain. Indeed, the guiding idea of ​​the soul undoubtedly relates to that of life, in this sense to the beating of the heart, then to the breath, two great indicators of the living being.

By taking a closer look, we notice that it is a perfect energy that seems to animate the whole body. Inestimable self-sufficiency in her. An inexhaustible power. However, doomed to a compulsory departure from this world after a stay that varies from one individual or from one species to another, very distinct in hours, days, years, centuries ... etc.

A body and soul to form Man, two principles at the end of a new sequel. It is customary to recall that there would always be two related foundations to attest to any stability (functioning) in nature, such as the gravitational attraction and the sphericity of the Earth for the equilibrium on its surface; expiration and inspiration for breathing, rubbing and oxygen for fire, weight and impulse of Archimedes ... etc.

 

 Absolutely, we learned from science, following the fertilization or fusion of information gametes for the purpose of converging to an embryo, during 9 months of the creation of Man. It is difficult to clarify the concept of the soul in this crucial phase for the understanding of the soul. In reality, the fusion of the genetic information can only allow the formation of other cells or an organism, but not in evidence a spirit or a soul. Necessarily, it would exist, therefore a primordial step for the spiritual conception at that of the organism. That cells are not enough to form a Man, in this sense in the absence of a vital component to his creation which is nothing but the soul. As mysterious as it is, but then where does it come from and what is its history? To this day, there is no provable information on the creation of the soul. In spite of this, this spirit hardly remembers its period of pre-existence before Man. His story seems to end well after birth. There is even an anecdote between 'mind and intelligence'. The intelligence is rather organic, but the intangible mind is used to close to an end. In clearer terms, it represents for him, a source of visual data processing, audio, smell, sense, ... etc., But also storage of information in the form of memories, reminders, recitation ... etc. . So, that supposes well, that the mind uses its information processing system well, but not so much that of storage, it is rather with the time that this capacity deviates operational.  
 It is obvious that a child cries due to a disturbance to a foreign superior force. Despite this advantage, once mature, humans do not remember anything from their first days, weeks, months and years. In this sense, the soul remembers nothing of its past, nor of the process of the formation of the embryo to the fetus, etc. Enclosed in a body, he is the absolute manager of the body. In a way, its own jungle. It sometimes happens that the man himself does not manage to understand himself, the reason why often people use the psys. It is certainly due to the storage information that the individual was able to achieve without paying attention. However, what can we know more about him? It is almost palpable to persuade that the quest for the soul will allow to clarify the truthfulness by the reclining accuracy of the Man. The soul once outside its carcass, no longer deserves to stay on this Earth, indeed, the time of disintegration of the body has arrived, for the soul does not remain a new beginning, so it seems reasonable to solicit the idea of ​​welcoming to another space separate from this present. Just like, the arrival in this world, the spirit locked in a body is welcomed by a family or another one. This space seems to him unknown and it is gradually, that he learns to discover is that really here below. By then, a first intuitive concept can be deduced: With conviction, the soul in a body ensures the life of here according to any term (stay). It is not excluded during sleep, although the unconscious reigns in the mind, the man continues to breathe and from the still a strong sign of a body alive.  
 Philosophers call him the instinct of life, this desire to live constantly and not to want to die. In reality, it is after learning about life on Earth, through various sensations that the soul is much more committed to reign in this world of various shapes and colors, ensure its survival forever. One reason she would not leave her anyway. Another remarkable point is that spirits mate, unlike angels. Souls react through the body, not by itself. In this case, we can designate this world, as the world of carcass or body, unlike that of souls. Would there be a life after death? In this life, souls are enclosed in a body, which we have previously designated life here below as bodily life. It is undoubtedly irrefutable to see a reality that is often scary: that of seeing the body age with time. In this sense, the body evolves with time. The body has known its creation in this world and will know its end too, to become dust. From there, it is a matter of glimpsing that it is a question of a life according to a fixed term and indirectly linked to the body. There is none for a stay proper to the soul. Its history is abstract, it comes spontaneously play a vital role in the body during the formation of fetuses. This speculates on the certain possibility of another life reserved especially for the soul. What are its peculiarities apart from those we have just mentioned? Among the supernatural creatures, angels, souls, devils and jinns all have several common and divergent points. As far as souls are concerned, they are destined to a reduced term   
 to taste death compared to others. Thus, there would be a difference between the soul of Man and that of other creatures on earth such as animals, plants ... etc. Let's see what other sources say: One of the most convincing sources of human creation in its microscopic phase is mentioned several times in the seventh century Koran, as these verses report: "[72] Once I have given him his definitive form and animated him with My breath, you will bow down to him. 38. Surat Sad (Saad): "[7] He created all things to perfection and created the creation of man from clay; [8] then of a vile liquid He drew his offspring; [9] Then He gave Him a harmonious form and breathed into Him His Spirit, thus giving you hearing, sight, and intelligence. But it is rare that you show Him your gratitude! 32. Surah of the Prosternation (As-Sajda). In Islam, God sends the angel to breathe the soul into the organism in conception. Indeed, according to what was reported in a prophetic narrative (authentic Hadith narrated by Imam Bukhari and Imam Muslim), according to companion Abdullah ibn Massoud: "The most truthful Messenger told us that one of you is made up in his mother's womb for 40 days. And then, it turns into a blood clot for the same amount of time. And then he becomes a fetus for the same amount of time. And then the angel is sent to breathe a soul and the angel is given the order to write four words concerning his sustenance, the end of his life, his work and his fate: will he be happy or unhappy. " Therefore, what about the soul in the face of the event of death, if it consists in separating oneself from the body? In this case, can we say that the soul is immortal? 
 In truth, the soul is at once the principle of life, but also of death. It is legitimate to think that death is nothing at all the end for the organic and material component and not the spiritual and immaterial one. In this terms, the soul is immortal. The simple equation of the secret of life is to say that the soul + the body = life and that the body itself is neither death nor life. Because there are two phases when designing the body: First the phase of integration from egg cell formation and the so-called phase of disintegration, which happens during the decomposition of the body. Biology does not seem to explain this immaterial component of life. It is true to realize how important it is to grant science to the study of the organism which coincides with the improvement of well-being. Health in this sense is an aspect of the material and not spiritual part. The body and soul relationship is an interposition relationship during the breath test. Even more surprising, the body represents an obstacle for the faculty of the soul to be able to go beyond this material component which it is in secret. But death for the soul is a moment of disclosure of itself. This test seems to him difficult and unwanted because of the deficiency of the experience of the existence without body. Notwithstanding, it is through which the recent soul also a pain, a means for him to suffer suffering. The more an organic cause seems to be a source of misery, the longer the sentence remains. But noting that the yield is growing in a joint way. It is a punishment channel, a weak point of the soul. In reality, the weakness of Man is not due to the immaterial component but to the material one that emanates from a connection between two units of life that are not gametes. The link of generation, more precisely: parental, fraternal or family ties does not contain the aspect of the soul. In the world beyond, this resistant filiation in the relationship between human beings will be insignificant. Because it is in the world of the organism that this link remains unshakable.  But the conjugal relationship between man and woman is not organic, but possibly not spiritual. Can we say then that there is no gender for souls? To tell the truth, the imitation of women's behavior by men and vice versa lets us consider this opinion. My words do not want to say that the soul is without sex, in other words, identical for the man and the woman and does not reproduce, but rather leave in suspense. Since these questions are not so important in the evolution of everyday life. The ideal consideration would be to see that the corporeal world is only a bodily stay and that a spiritual adventure awaits us all in a time of non-reversal.

 

Abdi-Basid ADAN, 2018.

 © 2026 The Abdi-Basid Courses Institute (tABCi). All rights reserved.

 
 

馃彌️ tABCi Laboratories :


馃И Abdi-Basid ADAN LABS  | Focus: Interdisciplinary Sciences & Education.

馃 The Deep Thinking Lab | Focus: Philosophy & Human Sciences.

馃實 The EcoClimate Hub | Focus: Climate Science & Environment.

Contact : Abdi-Basid ADAN [abdi-basid@outlook.com]


Click below to view the full Course Catalogue :

       *The Abdi-Basid Courses Institute*



 © 2017-2026 The Abdi-Basid Courses Institute (tABCi). All rights reserved.

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