Interannual variations of normalized difference vegetation index and potential evapotranspiration and their relationship in the Baghdad area

Muna H. Ahmed; Zahraa S. Mahdi; Monim H. Al-Jiboori; Dalia A. Mahmood

doi:10.1515/opag-2022-0386

Details

Publication Date

Mon Jan 01 2024

Journal Name

Open Agriculture

Volume

9

Issue Number

1

DOI

10.1515/opag-2022-0386

Choose Citation Style

Statistics

View publication

19

Statistics

(4)

Interannual variations of normalized difference vegetation index and potential evapotranspiration and their relationship in the Baghdad area

potential evapotranspiration

NDVI

vegetation cover

Sentinel-2 satellite

Baghdad

Muna H. Ahmed

Zahraa S. Mahdi

Monim H. Al-Jiboori

Dalia A. Mahmood

...Show More Authors

AbstractA monthly correlation between urban vegetation growth and potential evapotranspiration (PET) is needed for better knowledge of controlling water resources and organized irrigation processes. This study aims to explore their relationship within an urban area like Baghdad, using a linear regression model to derive a best-fit line drawn in a scatterplot on a monthly time scale. Based on two different monthly data sources: weather variables (e.g., air temperature, solar radiation, and relative humidity) and Sentinel-2 satellite imagery of 2 years, 2018 and 2021, this study presented the interannual variations of PET and normalized difference vegetation index (NDVI). The choice of these years has a significant feature of climatic differences, which are arid and semi-arid, respectively. PET values were estimated by the Truc method, while the areas of vegetation (represented by NDVI) were calculated using the Geographic Information Sensing program. The results show that the maximum PET in both years was found in the summer months (June and July) with mean values of about 8.8 mm/day, while their minimum mean values of about 1.5 mm/day occurred in winter months (January and December). From the spatial distribution of NDVI, it was found that at positive pixels when NDVI >0.2, vegetation cover in March, April, and December 2018 had large areas with more than 200 km2 in 2018, while they were largest only in May 2021 with 197.8 km2. There was a linear correlation with slope (0.03) and intercept (= 1.8) and a strong correlation, <italic>R</italic> 2 = 0.72. The practical implications of the findings contribute to enhancing a solid scientific basis for improving agricultural water management, especially under dry conditions.

View Publication Preview PDF

Quick Preview PDF

Publication Date

Thu Mar 23 2023

Journal Name

Arab Gulf Journal Of Scientific Research

Influence pH on virulence genes of Pseudomonas aeruginosaanalyzed by RT-PCR method

Ahmed Attalah

Adel Mashaan

...Show More Authors

Purpose

The purpose of this study was to determine the influence of environmental pH on production of biofilms and virulence genes expression in Pseudomonas aeruginosa.

Design/methodology/approach

Among 303 clinical and environmental samples 109 (61 + 48) isolates were identified as clinical and environmental P. aeruginosa isolates, respectively. Clinical samples were obtained from patients in the Al-Yarmouk hospital in Baghdad city, Iraq. Waste water from Al-Yarmouk hospital was used from site before treatment unit to collect environmental samples. The ability of prod

View Publication

(2)

Publication Date

Fri Jul 21 2023

Journal Name

Journal Of Engineering

ADJUSTING OFF – CENTERING PROCESS FOR A BLOW MOLDED PLASTIC PRODUCT BY USE OF WINQSB SOFTWARE

: Process Capability

Process Capability Analysis

WinQSB Software

Process Capability Index

Control Charts

Mean Shift

Off – Center

Ahmed A.

Kawakib A.

Dursaaf M. H.

...Show More Authors

In most manufacturing processes, and in spite of statistical control, several process capability indices refer to non conformance of the true mean (µc ) from the target mean ( µT ), and the variation is also high. In this paper, data have been analyzed and studied for a blow molded plastic product (Zahi Bottle) (ZB). WinQSB software was used to facilitate the statistical process control, and process capability analysis and some of capability indices. The relationship between different process capability indices and the true mean of the process were represented, and then with the standard deviation (σ ), of achievement of process capability value that can reduce the standard deviation value and improve production out of theoretical con

View Publication Preview PDF

Publication Date

Thu Nov 07 2024

Journal Name

Journal Of Ecological Engineering

Microwave assisted production of biodiesel using CaO nano-catalyst produced from mango fallen leaves extract

Atheer M.

...Show More Authors

View Publication

(7)

(5)

Publication Date

Sun Dec 01 2019

Journal Name

Civil Engineering Journal

Structural Behavior of High Strength Laced Reinforced Concrete One Way Slab Exposed to Fire Flame

Laced Reinforced Concrete

One-Way Slab

Fire Flame

High Temperature

SCC.

Anas Ibrahim

Shatha

...Show More Authors

In this study, an experimental investigation had conducted for six high strength laced reinforced concrete one-way slabs to discover the behavior of laced structural members after being exposed to fire flame (high temperature). Self-compacted concrete (SCC) had used to achieve easy casting and high strength concrete. All the adopted specimens were identical in their compressive strength of ( , geometric layout 2000 750 150 mm and reinforcement specifics except those of lacing steel content, three ratios of laced steel reinforcement of (0.0021, 0.0040 and 0.0060) were adopted. Three specimens were fired with a steady state temperature of for two hours duration and then after the specimens were cooled suddenly by spraying water. The

View Publication

(6)

Publication Date

Fri Apr 01 2022

Journal Name

Heliyon

Stigma towards health care providers taking care of COVID-19 patients: A multi-country study

Abdulqadir J.

Glenn Ford D.

Sadeq

Hani

Hossam

Muna

Joseph U.

Ibtesam O.

Hawa

Nabil E.

Fade

I. Ketut

Aiman

Bilal

Malik

Marwa M.

Mostafa

Hayder

Mohammed B.

Sabah A

Shaymaa M.

Ayat J.

Mohammed A.

Nisha

Majid

Ananth

Mohamed A.

Ralph C.

...Show More Authors

View Publication

(37)

(30)

Publication Date

Wed Sep 24 2014

Journal Name

International Journal Of Environmental Science And Technology

Removal of copper ions from contaminated groundwater using waste foundry sand as permeable reactive barrier

A. A. H.

M. D.

...Show More Authors

(19)

(17)

Publication Date

Tue Nov 09 2021

Journal Name

Abu Dhabi International Petroleum Exhibition & Conference

Numerical Simulation of Gas Lift Optimization Using Artificial Intelligence for a Middle Eastern Oil Field

evolutionary algorithm

gas lift

artificial intelligence

upstream oil & gas

machine learning

optimization problem

correlation

presented

allocation

reservoir pressure

Mohammed Ahmed

Omar F.

Dhifaf Jaafar

Haider Abdulmuhsin

Mustafa Alaulddin

...Show More Authors

AbstractArtificial lift techniques are a highly effective solution to aid the deterioration of the production especially for mature oil fields, gas lift is one of the oldest and most applied artificial lift methods especially for large oil fields, the gas that is required for injection is quite scarce and expensive resource, optimally allocating the injection rate in each well is a high importance task and not easily applicable. Conventional methods faced some major problems in solving this problem in a network with large number of wells, multi-constrains, multi-objectives, and limited amount of gas. This paper focuses on utilizing the Genetic Algorithm (GA) as a gas lift optimization algorit ... Show More

View Publication

(8)

(7)

Publication Date

Sun Dec 01 2019

Journal Name

Journal Of Ecological Engineering

Biosorption of Heavy Metals from Synthetic Wastewater by Using Macro Algae Collected from Iraqi Marshlands

Safaa

...Show More Authors

View Publication

(20)

(18)

Publication Date

Mon Jul 01 2024

Journal Name

Alexandria Engineering Journal

Comparison of some Bayesian estimation methods for type-I generalized extreme value distribution with simulation

Weibull distribution Maximum likelihood estimation Bayesian shrinkage estimator Shrinkage pre-test Squared loss function Linear exponential loss function

Sundos Bader

Fatima K.

Rehab Noori

Amal S.

Ehab M.

Fatimah M.

Sara Mohamed Ahmed

Md Moyazzem

...Show More Authors

The Weibull distribution is considered one of the Type-I Generalized Extreme Value (GEV) distribution, and it plays a crucial role in modeling extreme events in various fields, such as hydrology, finance, and environmental sciences. Bayesian methods play a strong, decisive role in estimating the parameters of the GEV distribution due to their ability to incorporate prior knowledge and handle small sample sizes effectively. In this research, we compare several shrinkage Bayesian estimation methods based on the squared error and the linear exponential loss functions. They were adopted and compared by the Monte Carlo simulation method. The performance of these methods is assessed based on their accuracy and computational efficiency in estimati

View Publication

(11)

(9)

Publication Date

Wed Oct 09 2024

Journal Name

Engineering, Technology & Applied Science Research

Experimental Investigation of Composite Circular Encased GFRP I-Section Concrete Columns under Different Load Conditions

Hiba Shihab

Abbas

Riyadh

...Show More Authors

Pultruded materials made of Fiber-Reinforced Polymer (FRP) come in a broad range of shapes, such as bars, I-sections, C-sections, etc. FRP materials are starting to compete with steel as structural materials owing to their great resistance, low self-weight, and cheap maintenance costs, especially in corrosive conditions. This study aims to evaluate the effectiveness of a novel concrete Composite Column (CC) using Encased I-Section (EIS) as a reinforcement in contrast to traditional steel bars by using Glass Fiber-Reinforced Polymer (GFRP) as I-section (CC-EIS) to evaluate the effectiveness of the hybrid columns which have been built by combining GFRP profiles with concrete columns. To achieve the aims of this study, nine circular co

View Publication

(20)

(19)

1 2 ... 3102 3103 3104 3105 ... 3136 3137