Low-Pressure and Sahara Dust from 7/27 to 7/28

For the last two days, a low-pressure zone and a layer of sand (dust) from the Sahara have been interacting in a harmonious dance.

Goes16 image for July 27 at 18:00 UTC
source : https://www.star.nesdis.noaa.gov/GOES/sector.php?sat=G16&sector=taw
Forecast of total Sahara dust in the air column of the SKIRON model for July 27 at 18:00 UTC
source : https://forecast.uoa.gr/en/forecast-maps/dust/north-atlantic

The Sahara dust limits the development of cloud structures in the low-pressure area and its convective movements, with progressive weathering visible on the animation. The depression favours the transport of the layer of dust towards North America.

The presence of Saharan dust in the atmosphere of the North Atlantic has many negative effects on health, in particular by reducing air quality with the presence of fine particles and bacteria. It also impacts the environment with a strong greenhouse effect which favours heat waves and drying of the air which modifies the frequency and the quantity of rainfall.

Conversely, the presence of particles modifies atmospheric dynamics, in particular cyclogenesis. In an atmosphere overloaded with sand, convection is limited or even stopped, cyclones have less favourable conditions to form.

The presence of large quantities of sand from the Sahara modifies our understanding of meteorology in the North Atlantic but also of the current and future climate. Years with large concentrations of Sahara dust disturb our perception of climate change.

Animation of Goes16 satellite images from Wednesday, July 27 to Thursday, July 28, 2022

July 26th International Day for the Conservation of the Mangrove Ecosystem

Bassin Bleu, Bananier, Capeterre-Belle-Eau, Guadeloupe, FWI (July 7th 2022)

Mangroves and their ecosystem have an essential role in biodiversity, the renewal of fish stock, the preservation of coastline, the quality of coastal waters, and the attenuation of flood waves. This list is not exhaustive and is growing day by day.

Therefore, preserving these environments is essential for the quality of life of women and men in the coastal zone.

Their preservation is complicated because they most often occupy areas with high tourist, port or real estate value. Making a choice between financially profitable projects and spaces that cannot be monetized is not accessible using a neo-capitalist reading grid.

To ensure the maintenance of these spaces of abundance, life and culture, it is necessary to agree to place the life of a fish, a mollusc, a crustacean, and a bird on the same level as that of ‘a company.

#TCGNRG #MangroveSwamp #Conservation #InternationalDay #Guadeloupe #Martinique #Caribbean

Read More : https://www.unesco.org/en/days/mangrove-ecosystem-conservation-day

World Meteorological Day 2022

March 23rd World Meteorological Day, this year’s theme is “Early Warning and Early Action”.

Meteorology is a relatively recent observational science. The technical progress made it possible after the Second World War (1950) to enter another dimension using remote sensors such as satellites and radio and then internet communicating sensors which allow the entire earth to be observed in real-time. Weather events can be monitored remotely from space or via sensors located in inaccessible areas.

A second revolution, that of digital (1970) made it possible to numerically simulate the ocean, the atmosphere and the ground over several days very quickly. Numerical weather forecasts are available every day for several weeks and therefore alert before extreme events: heatwave, snowstorm, sandstorm, torrential rain, extreme wind, hurricane, etc.

Despite these new capacities and their constant improvement, we remain weak in terms of the ability to adapt to extreme events, the causes of which we still have difficulty rigorously defining. Meteorology is not about the effects of risks, but about their origin: hazards.

Technologies, as in many other sciences, tend to make us forget that the size or form of digital information and data is not important, only their reliability counts and the people to analyse them.

On this world day TCGNRG invites you to ask yourself about the human resources available in your region to monitor weather phenomena, you will understand why forecasts are so inaccurate and so often wrong.

#WMO #WMD #WorldWeatherDay #Weather #Climate #Hydrology #LackOfResources #TCGNRG

Read More https://public.wmo.int/en/resources/world-meteorological-day/world-meteorological-day-2022-early-warning-early-action

International Water Day 2022

International Water Day

March 22nd International Water Day the day after the International Day of Forests and on the eve of the International Day of Meteorology. Everything is intertwined and interconnected in our EARTH system.

Water is present everywhere on the surface of planet earth, in the form of liquid (salt, fresh or brackish water), solid (ice, snow) and gaseous (water vapour), both in the atmosphere but also in the grounds. WATER is essential for LIFE but also for landscapes, climate balance and technologies.

This year groundwater is highlighted. They are present in the form of aquifer, spring, infiltration.

Groundwater is an invisible and essential network for wetlands and deserts. They transport minerals, organic matter and recently (less than 200 years) persistent chemical pollutants; they feed ponds, rivers, and coastal waters.

Groundwater is the hidden part of the global water cycle, and because of its invisibility, it is too little protected.

On this international day, TCGNRG advises you to take the time to think consciously about where the water you drink or use comes from and where it goes in order to better participate in its preservation.

#Water #Preservation #Health #Pollution #WaterDay #InternationalDay #WaterDay #TCGNRG

Poster of the official selected theme for the International Water Day : Ground Water

Read More: https://www.worldwaterday.org/share-2022

International Day of Forests 2022

Picture of Tropical Forest at Grand-Étang, Capesterre Belle-Eau

The Food and Agriculture Organization of the United Nations (FAO) has declared March 21st as the International Day of Forests.

Official poster of the International Day of Forests 2022

The forest as an ecological system is the basis of life and determines the supply of water, plant and animal resources, but also energy via wood, coal and peat for certain regions.

The forest performs many other missions, particularly in extreme environments such as in tropical areas with high rainfall where the stability of the soil is entirely their responsibility.

Few forest areas are preserved from the action of men, agriculture, logging and urbanization constitute the most visible threats, but the generalized use of pesticides and other chemical products weaken the components of these systems and push to their transformation.

New exotic species is also a major risk, globalization, the ease of the transport of goods with stowaways such as insects and snails, the desire to grow new plant species disturb forest systems with more or less serious and more or less lasting effects.

On the climate side, the role of the forest in the capture of atmospheric carbon is known but its role in rainfall is less so. Evaporation above forest areas allows a large number of microorganisms present on the leaves of trees to be found in the atmosphere and constitute as many condensation points for water vapour facilitating precipitation. A forest needs water to grow and facilitates rainfall.

The forest is a complex system, they all have their specificity and uniqueness, dry, wet, maritime. To enter a forest is to enter a full universe that deserves respect and protection like the oceans. Forests are essential to our life on this planet.

On this international day, ask yourself the question of the last time you went to the forest. If it’s been too long, plan a visit to reconnect with the biological reality of our planet and adapt our lifestyle.

#Forest #FAO #InternationalDay #Complex #Biology #Protection #Future #TCGNRG

Poster of the selected theme of the International Day of Forest: Sustainable wood

Read More : https://www.fao.org/international-day-of-forests/en/

International Education Day (2022)

Education (and access to knowledge) without being a guarantee of social justice is one more chance to live in health, in peace and to avoid exploitation and this at all ages.

It is important for everyone to question the state of our education systems and the future we want in order to improve them.

Education also includes all the knowledge and human know-how developed, including the knowledge from our cultures. Globalization and access to knowledge on an industrial scale via the Internet classify knowledge, making the life of the knowledgeable unsuited to their environments.

On this international day, it is important to question an education at all ages that values and respects all knowledge, know-how and interpersonal skills.

TCGNRG’s essence is to make knowledge and understanding tools available to all, in particular for phenomena at the ocean-atmosphere interface. For this, respect for ancestral cultures and knowledge is essential because although the last hundred years have seen a progression in observation and modeling methods, they have only made it possible to directly characterize the last hundred (100) years of what is small compared to the history of mankind (7 million years).

#InternationalDay #Education #Knowledge #KnowHow #InterpersonalSkill #Respect #Cultures #UNSECO #TCGNRG

Read more on : https://en.unesco.org/commemorations/educationday

World Wetland Day 2021

Wetland area are essential are for the biodiversity and the availability of water for environment. Too often, in the tropical area, these areas are confused with mangle swamp which is composed them. But there are more extensive and got many shades which made them zones too little known and studied

#WWD2021 #WetLand2021

A New MPhil in Applied Physic

The Jamaican Green Desalination Project is glad to announce that the MPhil associated with the project was validated, in September 2020, by the University of the West Indies, Mona Campus. The thesis is entitled “RENEWABLE ENERGY FOR DESALINATION PROCESS: EFFICIENCY AND ENVIRONMENTAL IMPACTS IN A TROPICAL ISLAND USING DIGITAL TOOLS

Title page of the Williams MPhil thesis

It is an initial project of three years, fruit of collaboration of the TCG•NRG and UWI Mona. This research is innovative for Jamaica and proposes the use of the Reverse Osmosis process to be run with Renewable Energy. The work done took a snapshot of the freshwater and Renewable Energy resource based on up to 50 years of data. Maps of the best locations to produce freshwater based on the Renewable Energy resource (i.e., wind, solar and wave), freshwater need and the impact of the waste aka by-product (i.e., brine) on the coastal environment have been produced for Jamaica. The impacts of a desalination plant powered by Renewable Energy have been evaluated in equivalent carbon dioxide tons saved and volume of sea water needed to dilute the brine produced by the desalination process.

Jamaica has a new Master of philosophy in Applied physics named Zachary Williams. The Thesis will be available for download in the couple of months.

These three years of research set methodology to select:

  • the type of Desalination process based on the environmental conditions.
  • the Renewable Energy hybrid farm based on the available resources.

The study allows the conception of a numerical simulator, using among other GIS methods, to evaluate the Renewable Energy production based on historical data. Those tools allow for evaluation of the production of freshwater and waste for the next decades.

One of the main output is the generation of map of the best location a Green Powering Desalination plant (see figure)

Le Cahier de la Ressource en Eau

The Caribbean Geophysical and Numerical Research Group (Le Groupe de Recherche Caribéen en Géophysique et Systèmes Numériques) est fier de vous annoncer la parution du premier cahier sur la ressource en eau de la Guadeloupe édité par l’OREC Guadeloupe intitulé : « LA RESSOURCE EN EAU ET LE CHANGEMENT CLIMATIQUE »

Ce document est le fruit d’un travail collaboratif du comité technique sur la ressource en eau du Groupe Régional d’Expert du Climat (GREC) Guadeloupe composé d’une dizaine de membre provenant de l’Université des Antilles, du BRGM, de l’IPGP-OBSERA, l’INRAe, Flè Kawbon, Office de l’Eau Guadeloupe, de TCGNRG et encadré par l’OREC Guadeloupe (Mesdames Cynthia Bonine et Amélie Belfort).

La rédaction du document a été confiée à Jean-François Dorville et Romain Rochette qui n’a malheureusement pas pu aller au bout du projet par manque de temps.

Le document est destiné aux institutions et au grand public. Il fait un inventaire de la ressource disponible, présente les projections climatiques et leurs effets attendus mais aussi les actions possibles pour les atténuer.

Le document est composé de 40 pages, 22 illustrations, 4 tableaux et 20 photographies. Il est organisé en quatre grandes parties :

  • Une présentation du climat de la Guadeloupe et ses principales caractéristiques
  • Un inventaire de la ressource en eau, principalement celles qui bénéficient d’un suivi administratif
  • Une présentation des prévisions climatiques, essentiellement provenant des projections à l’horizon 2080 du projet C3AF (scénario GIEC RCP8.5) et ces effets attendus sur la ressource et les usages de l’eau
  • Une présentation des leviers d’action, les moyens et les méthodes disponibles pour atténuer les effets avenir.

Le document est librement téléchargeable sur le lien suivant : Cahier_de_l_eau

TCGNRG espère qu’il deviendra un document de référence pour la grande région Caraïbe. Nous restons disponibles pour répondre à toutes questions sur ce sujet (contact@tcgnrg.com).

Lien YouTube de présentation de la vidéo sous-titré

Lien vers article dans la presse

RCI Guadeloupe (13/11/2020) : https://www.rci.fm/guadeloupe/infos/Environnement/Un-cahier-pour-comprendre-la-ressource-en-eau-et-le-changement-climatique-en

France Antilles Guadeloupe (11/11/2020) : https://www.guadeloupe.franceantilles.fr/actualite/environnement/un-webinaire-sur-la-ressource-en-eau-en-guadeloupe-et-le-changement-climatique-580152.php

France Antilles Guadeloupe (17/11/2020): https://www.guadeloupe.franceantilles.fr/actualite/environnement/nos-enfants-devront-apprendre-a-economiser-l-eau-580483.php

Water Resource Notebook of Guadeloupe

The Caribbean Geophysical and Numerical Research Group is proud to announce the publication of the first notebook on the water resource of Guadeloupe edited by OREC Guadeloupe (Regional Energy & Climate Observatory) named « LA RESSOURCE EN EAU ET LE CHANGEMENT CLIMATIQUE » (WATER RESOURCE AND CLIMATE CHANGE)

This document is the fruit of the collaborative work of the technical committee of the water resource of the Regional Climate Expert Group of Guadeloupe composed by ten members form University of Antilles, BRGM (French Geological and Mining Research Office), IPGP-OBSERA (Earth Physic Institute of Paris – Observatory of water and erosion in the French West Indies), INRAe (French National Institute of Agronomic Research and Environment), Flè Kawbon (Carbon Flower -Design Office-), Office de l’Eau Guadeloupe (Water Office of Guadeloupe), TCGNRG and supervised by OREC Guadeloupe (Mrs Cynthia Bonine and Amélie Belfort).

The writing of the document has been committed to Jean-François Dorville et Romain Rochette who could not go to the end of this project by lack of time.

The document is intended for institutions and the general public. It inventors the available resource, presents the climatic projections and theirs expected effects but also the possible actions to mitigate them.

The document is composed of 40 pages, 22 illustrations, 4 tables and 20 pictures. It is organized in four parts:

  • A presentation of climate of Guadeloupe and its main features
  • An inventory of the water resource, mainly those which benefit from an administrative following.
  • A presentation of the climate prevision, mainly those which come from C3AF up to 2080 (IPPC RCP8.5 scenario), and their expected effects on the water resource and their usage.
  • A presentation of levers of action, means and methods available to mitigate the future effects

The document if freely downloadable in French on that link : Cahier_de_l_eau

A long abstract will be available soon

TCGNRG hopes that it will become a reference in the Caribbean area. We still available to answer to any questions on the field (contact@tcgnrg.com)

YouTube link of the video of presentation (in French with subtitle) : YouTube

Link to press article

RCI Guadeloupe (13/11/2020) : https://www.rci.fm/guadeloupe/infos/Environnement/Un-cahier-pour-comprendre-la-ressource-en-eau-et-le-changement-climatique-en

France Antilles Guadeloupe (11/11/2020) : https://www.guadeloupe.franceantilles.fr/actualite/environnement/un-webinaire-sur-la-ressource-en-eau-en-guadeloupe-et-le-changement-climatique-580152.php

France Antilles Guadeloupe (17/11/2020): https://www.guadeloupe.franceantilles.fr/actualite/environnement/nos-enfants-devront-apprendre-a-economiser-l-eau-580483.php