#thuwal

[trendynewsnow]

Transforming Saudi Arabia's Coastal Landscape Through Regenerative Tourism

On Saudi Arabia’s stunning western coastline, a visionary regenerative tourism project is unfolding, spearheaded by Red Sea Global. This initiative aims to create three luxurious tourism developments that prioritize renewable energy, social accountability, and scientifically-informed conservation of the region’s delicate ecosystems. The journey has already begun with the opening of the Thuwal…

[crystalfacilitiesmanagement]

Cleaning Contractor Services in Thuwal https://cfmsaudi.com/services/thuwal/cleaning-contractor/

[foggynightdonut]

Toba volcano super eruption destroyed the ozone layer and caused a human population bottleneck

Sergey Osipov1,Georgiy Stenchikov2,Kostas Tsigaridis3,4,Allegra LeGrande3,4,Susanne Bauer3,4,Mohamed Fnais5,and Jos Lelieveld1

1Max Planck Institute for Chemistry, Mainz, Germany (sergey.osipov@mpic.de)

2King Abdullah University of Science and Technology, Thuwal, Saudi Arabia

3Center for Climate Systems Research, Columbia University, New York, USA

4NASA Goddard Institute for Space Studies, New York, USA

5King Saud University, College of Science, Riyadh, Saudi Arabia

Volcanic eruptions trigger a broad spectrum of climatic responses. For example, the Mount Pinatubo eruption in 1991 forced an El Niño and global cooling, and the Tambora eruption in 1815 caused the "Year Without a Summer." Especially grand eruptions such as Toba around 74,000 years ago can push the Earth's climate into a volcanic winter state, significantly lowering the surface temperature and precipitation globally. Here we present a new, previously overlooked element of the volcanic effects spectrum: the radiative mechanism of stratospheric ozone depletion. We found that the volcanic plume of Toba enhanced the UV optical depth and suppressed the primary formation of stratospheric ozone from O2 photolysis. Sulfate aerosols additionally reflect the photons needed to break the O2 bond (λ < 242 nm), otherwise controlled by ozone absorption and Rayleigh scattering alone during volcanically quiescent conditions. Our NASA GISS ModelE simulations of the Toba eruption reveal up to 50% global ozone loss due to the overall photochemistry perturbations of the sulfate aerosols. We also consider and quantify the radiative effects of SO2, which partially compensated for the ozone loss by inhibiting the photolytic O3 sink.

Our analysis shows that the magnitude of the ozone loss and UV-induced health-hazardous effects after the Toba eruption are similar to those in the aftermath of a potential nuclear conflict. These findings suggest a “Toba ozone catastrophe" as a likely contributor to the historic population decline in this period, consistent with a genetic bottleneck in human evolution.

How to cite: Osipov, S., Stenchikov, G., Tsigaridis, K., LeGrande, A., Bauer, S., Fnais, M., and Lelieveld, J.: Toba volcano super eruption destroyed the ozone layer and caused a human population bottleneck, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-4131, https://doi.org/10.5194/egusphere-egu2020-4131, 2020

[kesmondsuniversity]

*GLOBAL SUSTAINABLE DEVELOPMENT CONGRESS 2023* Topic: Uniting higher education, governments, industry and society for a sustainable future Date: 30 May – 1 June 2023 Location: Thuwal, Saudi Arabia We are thrilled to announce the first speakers for the Global Sustainable Development Congress 2023 at King Abdullah University of Science and Technology (KAUST) in Saudi Arabia from 30 May – 1 June. The congress comes at the pivotal halfway mark between COP 27 in Egypt in 2022 and COP 28 in the United Arab Emirates this November, ensuring we keep the sustainability crisis centre stage in the region. As a leading sustainability-focused academic institution in the region, KAUST is dedicated to pioneering new models of liveability and ecological conservation and is proud to host the first GSDC in the Middle East. The congress will assess the current (in)action with regard to how the sustainability crisis is being tackled. It will challenge the usual thinking on how higher education, together with the support of governments, business and society, can accelerate progress on the SDGs. And it will provide concrete action plans and practical solutions. Under the overarching theme of “universities at a time of global crisis”, the agenda features four streams of content addressing the emergency. • Health and demography • Energy and industry • Environment • Cities and communities Click here to register https://kesmonds-edu.ac/event/global-sustainable-development-congress-2023/ https://www.instagram.com/p/CoyLzkZNqmK/?igshid=NGJjMDIxMWI=

[omri-kilah]

[hazimalradadi]

Portfolio update ✨ link in bio ⬆️ #thuwal #portfolio #design #graphics #identity #branding #graphics #design #GraphicDesign #creativity #inspiration #inspiring #pantone #designinspiration #print #brochure #marketing #editorial #إلهام #تصميم #مطبوعات #designarf

[kii-mani]

Lost in the #beauty of the #endless #desert (at Thuwal, KSA) https://www.instagram.com/p/CUzaHBkoH4L/?utm_medium=tumblr

[sciencenewsforstudents]

Engineers have constructed a device that not only generates electricity from the sun, but also distills freshwater from seawater. Solar farms that install such two-for-one systems could help meet the increasing global demand for drinking water while cranking out useful power.

Peng Wang, Wenbin Wang and Yusuf Shi have applied for a patent on the new concept. They are part of an 11-member team that developed the new device. All work at King Abdullah University of Science and Technology in Thuwal, Saudi Arabia. They described their new device online July 9, 2019 in Nature Communications.

[arrecifescoralinos]

Threesome symbiotic relationship!

#ImageOfTheDay:

December 29, 2020: This image illustrates two types of symbiotic relationships. First is a zoanthid that has paratized a bubblegum coral, feeding off of the coral and causing it harm. Second is the brittle star, which is clinging to the branches of the zoanthid and coral in order to get further up off the seafloor into the water column to feed or for protection.

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Full caption: by NOAA

Parts of this threesome are:

Octocorallia (also known as Alcyonaria) is a subclass of Anthozoa comprising around 3,000 species of water-based organisms formed of colonial polyps with 8-fold symmetry. It includes the blue coral, soft corals, sea pens, and gorgonians (sea fans and sea whips) within three orders: Alcyonacea, Helioporacea, and Pennatulacea. These organisms have an internal skeleton secreted by mesoglea and polyps with eight tentacles and eight mesentaries. As with all Cnidarians these organisms have a complex life cycle including a motile phase when they are considered plankton and later characteristic sessile phase.

Octocoral from Queensland

Non-gorgonian octocoral genera, and morphotypes within genera, that were surveyed along the west coast of the Kingdom of Saudi Arabia in Jeddah, Thuwal, Al Lith and the Farasan Islands. Scale bars 1 cm.

Brittle stars, serpent stars, or ophiuroids are echinoderms in the class Ophiuroidea closely related to starfish. They crawl across the sea floor using their flexible arms for locomotion. The ophiuroids generally have five long, slender, whip-like arms which may reach up to 60 cm (24 in) in length on the largest specimens.

Plate of brittle stars from the Kunstformen der Natur from Ernst Haeckel (1904).

Over 60 species of brittle stars are known to be bioluminescent. Most of these produce light in the green wavelengths, although a few blue-emitting species have also been discovered. Both shallow-water and deep-sea species of brittle stars are known to produce light. Presumably, this light is used to deter predators.

Zoanthids (order Zoantharia also called Zoanthidea or Zoanthiniaria) are an order of cnidarians commonly found in coral reefs, the deep sea and many other marine environments around the world. These animals come in a variety of different colonizing formations and in numerous colors. They can be found as individual polyps, attached by a fleshy stolon or a mat that can be created from small pieces of sediment, sand and rock.

Fig 1. A colony of "dragon eye" coral, Zoanthus sp. Fig 2. Parazoanthus axinellae

[crystalfacilitiesmanagement]

Compound Cleaning Services in Thuwal https://cfmsaudi.com/services/thuwal/compound-cleaning/

[muhannadphotography]

Today's sunset💕❄️ Captured with my #Canon6D on #Thuwal Beach, #saudiarabia @kaustofficial (at KAUST- King Abdullah University For Science And Technology)

[omri-kilah]

[spaceexp]

Remote sensing of toxic algal blooms

Thuwal, Saudi Arabia (SPX) Jun 04, 2019 Harmful algal blooms in the Red Sea could be detected from satellite images using a method developed at KAUST. This remote sensing technique may eventually lead to a real-time monitoring system to help maintain the vital economic and ecological resources of the Red Sea. Monitoring harmful blooms using traditional in-situ methods is not only costly and labor intensive but often requires col Full article

[dailynews9]

10-yr -old dies of wasp bite as blocked road delays treatment

10-yr -old dies of wasp bite as blocked road delays treatment

Pithoragarh: A class 5 student died of a wasp bite in Champawat on Sunday, after he could not be taken to a higher medical centre in time for treatment as the Champawat Tanakpur Road was blocked at Swala. Ritik Thuwal ( 10 ) was a student of class 5 at the gov ernment primary school . Champawat and son of Sure sh Chandra Thuwal , a native of Badoli village , presently residing in Champawat . A…