|The Annual AWWA Conference and Exposition is set for June 11-14 2018 at the Mandalay Convention Centre in Las Vegas, Nevada, with the theme “Innovating the Future of Water”. Interested persons can register via the link below or go the American Water Works Association (AWWA) website for more details.|
The materials presented in our last book display were well-appreciated. However, persons are always welcome to give recommendations on material they wish to see in the library since the library is for the clients.
This week’s book display would be highlighting documents that deal with GIS and the Environment.
Enjoy and happy reading!
Persons wishing to view any of the above documents can email me or visit me at my desk.
I am doing my happy dance and if you guys know me that’s because we just got a glossy, new book that has been on my wishlist for months, thanks to two of our colleagues who attended the Institute of Marine Affairs’ Community Research Symposium, which was held at the BPTT/Mayaro Resource Centre on the 20th September, 2017. Thanks again guys, love getting books to add to our collection. I am going to enjoy cataloguing this book so much.
This guidebook which contains app. 104 pages, as well as, a bibliography and relevant appendices, provides a wealth of information, covering coastal zones in both Trinidad and Tobago, that really allows one to appreciate the beaches and bays of the our country, as well as, the natural flora and fauna.
Persons wishing to view this book can visit me at my desk or send me an email.
For those of you who may not be familiar with some of the titles in the library, I have decided to create a digital display, similar to the ones seen in public libraries, in order to get persons acquainted with certain texts and build interest.
Hope to see you soon and enjoy the “book candy” since there is much more where those came from.
P.S. Clicking on the image gallery below opens up a slideshow to help one with reading the titles more clearly
This article was published by Laura Sanchez – Water Efficiency Magazine Editor on September 6th 2017. I hope you find it as informative as I have.
If you’ve ever walked along the shore and inhaled deeply, you’ve probably sensed it. Sea spray contains far more than water. As the briny, earthy aroma indicates, the tiny aerosol droplets also carry salts as well as organic compounds. And, as it turns out, these additional molecules have a profound impact on the earth’s climate.
As water evaporates at the surface of the sea, it rises to form clouds. Wave action creates aerosols—microscopic airborne particles trapped in water droplets. These aerosols influence the formation and physical properties of clouds, such as their ability to absorb sunlight or trap heat.
Climatologists explain that, depending on their chemical makeup, different aerosols scatter or absorb sunlight to varying degrees. In fact, according to NASA, an aerosol’s effect on light depends primarily on the composition and color of the particles. In general, “bright-colored or translucent particles tend to reflect radiation in all directions and back towards space. Darker aerosols can absorb significant amounts of light.”
Salt particles, sulfates, and nitrates therefore tend to be more reflective and have a cooling effect on the atmosphere, according to a recent study, whereas black carbon absorbs radiation, warming the atmosphere. Organic carbon, sometimes called brown carbon or organic matter, can also have a warming influence on the atmosphere, depending on the brightness of the underlying ground.
“Sea spray aerosol was thought for a long time to be just salt—sodium chloride—and that’s not true,” Vicki Grassian a distinguished professor in the departments of Chemistry and Biochemistry, Nanoengineering, and the Scripps Institution of Oceanography at UC San Diego told Ensia. “There’s a lot more that comes out of the water—viruses, bacteria, organic compounds, parts of cell walls—little ‘bio bits,’ if you will.” Scientists believe that understanding these aerosols and their chemical compositions is critical to understanding cloud formation and fluctuations in the Earth’s climate.
Cloud formation has been extremely difficult to capture in mathematical formulas in the past. Part of the difficulty can be attributed to the fact that traditional calculations have been completed using principles governing pure water molecules. Aerosol studies such as Grassain’s have demonstrated that, in order to be mathematically precise, cloud formation formulas will need to be adjusted to accommodate different molecular compositions. Scientists are hopeful that understanding these variables will help make future weather models increasingly accurate.
I find it exhilarating to reflect on the fact that such a tiny unit of water—an aerosol—can impact the global environment. What are your thoughts? Do you think that aerosol studies may enrich our understanding of the Earth’s climate?
For the last century, the U.S. Geological Survey, Federal Emergency Management Agency, and others have collected data on flooding activity to assess damage and help predict future events. Accurately forecasting the frequency and magnitude of flooding events is critical for infrastructure design, environmental management, and disaster preparedness and response.
Although long-term flood records are useful, there may also be large-scale, systematic forces at work that past studies have not adequately captured. For one, traditional prediction methods often assume that flood hydrology is stationary, or, rather, that the magnitude and variability of flood events do not change systematically over time. However, climate change and water management practices could significantly alter the magnitude and variability of extreme flooding events, causing floods to become nonstationary.
Continue to read the article by clicking on the link below.
Everyone knows that a 100-year flood is a really big flood. But not all big floods are 100-year floods, and a 100-year flood is not necessarily the same as a 100-year storm. So…how can you ensure your floodplain structures are designed to handle any flood nature may have in store?
Join returning speaker Doug Beyerlein, P.E., P.H., D.WRE, in our online training webinar as we examine the different flood frequency methods available to an engineer, the key assumptions contained in each method, and how to select the appropriate flood frequency method for the engineering job at hand. We’ll also discuss situations where flood frequency is not the appropriate design parameter and what flow-related method should be used instead.
Specifically, we’ll discuss how engineers use flood frequency as a design standard in sizing many, if not most, structures within a floodplain—ranging from designing culverts and bridges, to determining roadway and building elevations, to sizing flood control structures. Calculating a flood frequency value is not difficult, but selecting the appropriate flood frequency method to calculate the frequency flow value can be.
Attendees can expect the discussion and education of the following learning objectives.
- Understand why flood frequency is not the same as storm frequency.
- Explore the different methods for calculating flood frequency.
- Analyze the key assumptions built into each flood frequency method.
- Learn the regional hydrologic characteristics that are important in flood frequency method selection.
- Determine when flood frequency is not the appropriate design parameter.
To learn more about this webinar, which would be presented by DOUGLAS BEYERLEIN, P.E., P.H., D.WRE, on 7th September, 2017, you can click on the following link.
In his article below, Jonathan Gourley, discusses his involvement in the Automated Non-Contact Hydrologic Observations in Rivers (ANCHOR) project in order to gather Flash Flood Data.
Source: In Pursuit of Flash Flood Data