Patrick Essien
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View article: Modulation of tropical stratospheric gravity wave activity and the ITCZ position by modes of climate variability using radio occultation and reanalysis data
Modulation of tropical stratospheric gravity wave activity and the ITCZ position by modes of climate variability using radio occultation and reanalysis data Open
The Intertropical Convergence Zone (ITCZ) is a dominant feature of tropical climate characterized by intense convection that influences global atmospheric circulation and serves as a primary source of stratospheric gravity waves (GWs), whi…
View article: Influence of modes of climate variability on stratospheric gravity waves in the tropics using Radio Occultation and Reanalysis Data
Influence of modes of climate variability on stratospheric gravity waves in the tropics using Radio Occultation and Reanalysis Data Open
The Intertropical Convergence Zone (ITCZ) is a critical driver of tropical climate, characterized by convective activity that transfers energy, influences atmospheric circulation, and modulates precipitation. These processes generate atmos…
View article: Climate response to stratospheric aerosol injection during the Harmattan season in West Africa
Climate response to stratospheric aerosol injection during the Harmattan season in West Africa Open
Stratospheric Aerosol Injection (SAI), a proposed climate intervention, aims to reduce the amount of solar radiation reaching the Earth’s surface by increasing the reflectivity of the atmosphere, thereby offsetting the warming effect of gr…
View article: Projected Changes in Rainfall Extremes over West African Cities Under Specific Global Warming Levels Using CORDEX and NEX-GDDP Datasets
Projected Changes in Rainfall Extremes over West African Cities Under Specific Global Warming Levels Using CORDEX and NEX-GDDP Datasets Open
We analyze long-term extreme events in daily precipitation for the period of 1950–2005 and future projections from 2006 to 2100 based on representative concentration pathways (RCP8.5) over West Africa, including twelve major cities of the …
View article: The relationship between ITCZ and the Equatorial Stratospheric Gravity Waves inferred from Radio Occultation Measurements
The relationship between ITCZ and the Equatorial Stratospheric Gravity Waves inferred from Radio Occultation Measurements Open
The GNSS radio occultation (RO) temperature and refractivity data obtained from COSMIC-1, COSMIC-2, and METOP satellites for 2011-2021 was used to investigate the occurrence of equatorial stratospheric gravity waves (ESGWs) and their relat…
View article: Stratospheric gravity wave potential energy and tropospheric parameters relationships over South America: a study using COSMIC-2 and METOP radio occultation measurements
Stratospheric gravity wave potential energy and tropospheric parameters relationships over South America: a study using COSMIC-2 and METOP radio occultation measurements Open
Using COSMIC-2 and METOP radio occultation measurements during the years 2020 and 2021, the study presents the first direct and independent relationship between the potential energy (E p ) in the stratosphere, precipitable water vapour (PW…
View article: Classification of large-scale environments that drive the formation of mesoscale convective systems over southern West Africa
Classification of large-scale environments that drive the formation of mesoscale convective systems over southern West Africa Open
Mesoscale convective systems (MCSs) are frequently observed over southern West Africa (SWA) throughout most of the year. These MCS events are the dominant rain-bearing systems, contributing over 50 % of annual rainfall over SWA. However, i…
View article: Classification Of Large-Scale Environments That Drive The Formation Of Mesoscale Convective Systems Over Southern West Africa
Classification Of Large-Scale Environments That Drive The Formation Of Mesoscale Convective Systems Over Southern West Africa Open
This is a set of datasets used for the publication of the article titled: Classification Of Large-Scale Environments That Drive The Formation Of Mesoscale Convective Systems Over Southern West Africa
View article: Classification Of Large-Scale Environments That Drive The Formation Of Mesoscale Convective Systems Over Southern West Africa
Classification Of Large-Scale Environments That Drive The Formation Of Mesoscale Convective Systems Over Southern West Africa Open
This is a set of datasets used for the publication of the article titled: Classification Of Large-Scale Environments That Drive The Formation Of Mesoscale Convective Systems Over Southern West Africa
View article: The Relationship between Stratospheric Gravity Wave Potential Energy and Tropospheric Parameters over South America inferred from COSMIC-2 and METOP Radio Occultation Measurements
The Relationship between Stratospheric Gravity Wave Potential Energy and Tropospheric Parameters over South America inferred from COSMIC-2 and METOP Radio Occultation Measurements Open
Using COSMIC-2 and METOP radio occultation measurements during the years 2020 and 2021, the study presents the first direct and independent relationship between the potential energy (E p ) in the stratosphere, precipitable water vapour (PW…
View article: Comment on wcd-2022-61
Comment on wcd-2022-61 Open
Abstract. Mesoscale convective systems (MCSs) are frequently observed over southern West Africa (SWA) throughout most of the year. However, it has not yet been identified what variations in typical large-scale environments of the West Afri…
View article: Signature of gravity wave propagations from the troposphere to ionosphere
Signature of gravity wave propagations from the troposphere to ionosphere Open
We observed a gravity wave (GW) signature in the OH emission layer in the upper mesosphere, and 4 h later, a medium-scale travelling ionospheric disturbance (MSTID) in the OI 630 nm emission layer. Spectral analysis of the two waves showed…
View article: Classification of Large-Scale Environments that drive the formation of Mesoscale Convective Systems over Southern West Africa
Classification of Large-Scale Environments that drive the formation of Mesoscale Convective Systems over Southern West Africa Open
Mesoscale convective systems (MCSs) are frequently observed over southern West Africa (SWA) throughout most of the year. However, it has not yet been identified what variations in typical large-scale environments of the West African monsoo…
View article: Intertropical Convergence Zone as the Possible Source Mechanism for Southward Propagating Medium-Scale Traveling Ionospheric Disturbances over South American Low-Latitude and Equatorial Region
Intertropical Convergence Zone as the Possible Source Mechanism for Southward Propagating Medium-Scale Traveling Ionospheric Disturbances over South American Low-Latitude and Equatorial Region Open
This paper presents the Intertropical Convergence Zone (ITCZ) as the possible source mechanism of the medium-scale traveling ionospheric disturbances (MSTIDs) propagating to the southeast direction over the South American region. Using the…
View article: Signature of gravity wave propagations from the Troposphere to Ionosphere
Signature of gravity wave propagations from the Troposphere to Ionosphere Open
We observed a gravity wave (GW) signature in the OH emission layer in the upper mesosphere, and 4 hours later, a medium-scale traveling ionospheric disturbance (MSTID) in the OI 630 nm emission layer. Spectral analysis of the two waves did…
View article: Long-Term Study on Medium-Scale Traveling Ionospheric Disturbances Observed over the South American Equatorial Region
Long-Term Study on Medium-Scale Traveling Ionospheric Disturbances Observed over the South American Equatorial Region Open
Using data collected by the GNSS dual-frequency receivers network, de-trended TEC maps were generated to identify and characterize the medium-scale traveling ionospheric disturbances (MSTIDs) over the South American equatorial region (lati…
View article: Multi-instrument study of longitudinal wave structures for plasma bubble seeding in the equatorial ionosphere
Multi-instrument study of longitudinal wave structures for plasma bubble seeding in the equatorial ionosphere Open
Large Scale Wave Structures (LSWS) in the equatorial ionospheric F-region were observed by measuring spatial and temporal variations within detrended total electron content (dTEC) data obtained by ground-based GNSS receivers over the South…
View article: Project G: Multidisciplinary Teamwork Design At Its Best
Project G: Multidisciplinary Teamwork Design At Its Best Open
NOTE: The first page of text has been automatically extracted and included below in lieu of an abstract Project G: Multidisciplinary Teamwork Design at its Best Abstract This paper reports on the very impressive outcome of a project design…
View article: Seasonal characteristics of small- and medium-scale gravity waves in the mesosphere and lower thermosphere over the Brazilian equatorial region
Seasonal characteristics of small- and medium-scale gravity waves in the mesosphere and lower thermosphere over the Brazilian equatorial region Open
The present work reports seasonal characteristics of small- and medium-scale gravity waves in the mesosphere and lower thermosphere (MLT) region. All-sky images of the hydroxyl (NIR-OH) airglow emission layer over São João do Cariri (7.4∘ …