Measurement of a World-Wide Transfer Function for Marine Cloud Brightening

2021 ◽  
Vol 6 (3) ◽  
Author(s):  
Salter SH ◽  
Keyword(s):  
Transfer Function ◽  
Real Time ◽  
World Wide ◽  
Climate Model ◽  
Sea Water ◽  
Cloud Condensation Nuclei ◽  
Short Life ◽  
Weather Patterns ◽  
Weather Observations ◽  
The World

Marine cloud brightening with a sub-micron spray of filtered sea water can exploit the Twomey effect to enhance planetary cooling. Several previous climate model results show that it can also affect precipitation in both directions in different places. Modulating the climate model settings for the concentration of cloud condensation nuclei with separate coded sequences in a number of spray regions round the world and correlating each sequence with the resulting weather patterns in observing stations round the world can give an everywhereto- everywhere transfer function of spray from each region to each observing station. The short life of spray allows the best choices of spray regions and seasons. Spray patterns can be modified tactically to suit real-time weather observations.

Real-time interactive virtual tour on the World Wide Web (WWW)

2003 ◽  
Author(s):  
Sanghyuk Yoon ◽  
Hai-jung Chen ◽  
Tom Hsu ◽  
Ilmi Yoon
Keyword(s):  
World Wide Web ◽  
Real Time ◽  
World Wide ◽  
Virtual Tour ◽  
The World

scholarly journals A Public Platform for Virtual IoT-Based Monitoring and Tracking of COVID-19

Electronics ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 12
Author(s):  
Younchan Jung ◽  
Ronnel Agulto
Keyword(s):  
Real Time ◽  
Information Disclosure ◽  
World Wide ◽  
Virus Disease ◽  
Tracking System ◽  
The World ◽  
Secret Keys ◽  
Control And Prevention ◽  
Real Time Information

The world is developing an app that alerts my smartphone when a COVID-19 (COrona VIrus Disease 19) confirmed case comes near me. However, regardless of what will be put to practical use first, the COVID-19 tracking system should satisfy the issues of legalization of location tracking and scalability as a public platform used by the world. Additional problems need solutions related to real-time authentication for information gathering, blind naming and privacy of tracked persons, and quality of service on the Query/Reply procedure. This paper proposes the Software-Defined Networking Controller-centric global public platform to monitor and track information for the COVID-19 relevant people and provide real-time information disclosure services to world-wide Centers for Disease Control and Prevention (CDCs) and regular users. The CDC manages a list of people who needs to be monitored related to the COVID-19 and forcibly installs COVID-19 virtual Internet of Things (vIoT) nodes in the form of applications on their smartphones. In addition to these nodes, the vIoT support nodes also engage as information providers to improve the quality of information services. The design of our platform aims to ensure confidentiality and authentication services giving individually different secret keys. In addition, our platform meets system scalability and reduces Query/Reply latency, where the platform accommodates a large number of world-wide CDCs and persons in control per CDC.

Pre-Computed Flight Planning in Australia

1981 ◽  
Vol 34 (2) ◽  
pp. 269-279
Author(s):  
P. C. S. Jackson
Keyword(s):  
Individual Differences ◽  
Real Time ◽  
Ground Control ◽  
Fuel Saving ◽  
Flight Planning ◽  
Weather Patterns ◽  
The World ◽  
The Individual

Various methods of standard, or stored, flight planning are in use throughout the world and have some degree of success, but on occasions they are too rigid to accommodate changes to routes or in weather patterns. A standard plan should eliminate the individual differences between manually computed flight plans by two pilots for the same route in identical aircraft. It should be in real time, flexible enough to allow route changes by ground control and capable of taking advantage of fuel-saving tail-wind components. All four requirements are inextricably linked.

A closer look at the invisible: Unprecedented levels of ultrafine particles and the hydrological cycle

2021 ◽  
Author(s):  
Wolfgang Junkermann ◽  
Jorg Hacker
Keyword(s):  
Ultrafine Particles ◽  
Climate Model ◽  
Hydrological Cycle ◽  
Global Climate ◽  
Cloud Condensation Nuclei ◽  
Global Climate Model ◽  
Anthropogenic Sources ◽  
Emission Rates ◽  
Weather Patterns ◽  
Sulphur Emissions

<p>Continental as well as maritime ultrafine particles as cloud condensation nuclei (CCN) are likely initially produced by gas to particle conversion starting with nucleation mode aerosol and slowly (within several hours)  growing into CCN sizes. Although these birth and growing processes were well investigated since about 50 years, the source locations, where the anthropogenic fraction of these particles are preferably formed still remain uncertain as well as the strength of individual natural or anthropogenic sources.</p> <p>We present an analysis based on two decades of airborne studies of number and size distribution measurements across Europe, Australia, Mexico and China on nucleation and Aitken mode particles serving as CCN or their precursors. Selected flight patterns allow source apportionment for typical major sources and even a quantitative estimate of their emission rates. </p> <p>Contrary to current global climate model RCP assumptions with decreasing aerosol from 2005 towards the end of the century trends of ultrafine particles and CCN are no longer correlated to sulphur emissions within the last two decades. Nowadays nitrogen and ammonia chemistry is becoming increasingly important for global anthropogenic nanoparticle particle formation and number concentrations. Due to their impact on the hydrological cycle, changes like a slowdown of raindrop production, an increased latent heat flux into the lower free troposphere, an invigoration of torrential rains and a larger water vapour column density might be the consequences. Such recently observed weather patterns are well in agreement with current observations of regional UFP/CCN concentrations and their timely evolution.</p>

Design, Analysis, and Simulation of Engineering Systems Over the World Wide Web for Educational Use

2002 ◽  
Author(s):  
P. S. Shiakolas ◽  
J. Kebrle ◽  
V. Chandra ◽  
David Wilhite
Keyword(s):  
World Wide Web ◽  
Real Time ◽  
World Wide ◽  
Linear Time ◽  
Web Browser ◽  
Real Time Simulation ◽  
Linear Time Invariant ◽  
Time Simulation ◽  
The World ◽  
Time Invariant

This paper presents the use of developed software tools for engineering education accessible via a web browser over the World Wide Web. The primary purpose of this work aims at improving the understanding of engineering fundamentals through interactive real-time simulation. The environment consists of modules for interactive real-time simulation of linear time invariant dynamic systems, and for the synthesis and analysis of planar mechanisms. The user interface enables easy understanding of the required inputs from the user. The outputs are presented in pictorial, graphical and textual forms. In addition to these forms, for the mechanism modules the user has the option to view an animation of the synthesized mechanism. This work demonstrates the ease of implementation, advantages of using this technology to aid in classroom instruction and provides valuable analysis tools to engineering professionals. Examples demonstrating features of the developed tools are presented. Users with Internet access can use the developed modules at http://zodhia.uta.edu/development.

scholarly journals Teaching Contemporary Physics Topics using Real-Time Data Obtained via the World Wide Web

10.2172/2385 ◽  
1998 ◽  
Author(s):  
W. Davis ◽  
R. Grip ◽  
M. McKay ◽  
R. and Stotler, D.P. Pfaff ◽  
A.P. Post-Zwicker
Keyword(s):  
World Wide Web ◽  
Real Time ◽  
World Wide ◽  
Time Data ◽  
The World ◽  
Real Time Data

On some Oceanographic Problems

1899 ◽  
Vol 22 ◽  
pp. 391-408 ◽  
Author(s):  
Vice-Admiral S. Makaroff
Keyword(s):  
Deep Sea ◽  
Royal Society ◽  
World Wide ◽  
Sea Water ◽  
Laws Of Nature ◽  
Scientific Study ◽  
The World ◽  
Lord Kelvin

I am very glad to embrace the opportunity of addressing the Fellows of the Royal Society of Edinburgh, many of whose members have contributed much to our knowledge of Oceanography. For instance, your President, Lord Kelvin, besides his researches on the tides, is well known to practical seamen from his excellent compasses and sounding machines; your Secretary, Prof. Tait, is well known from his researches on the pressure errors of deep-sea thermometers; Dr Alexander Buchan has a world-wide reputation in the department of oceanic meteorology; the late Prof. Dittmar was a great authority on the chemistry of sea water. It is enough to say that Sir Wyville Thomson, Mr J. Y. Buchanan, and Sir John Murray, were members of the “Challenger” Expedition, which has given the world such valuable information about the depths of the sea.Of course, it is not with the intention of giving to such scientific authorities a lesson that I address the Society, but if you represent scientists, I represent the seamen, and it is useful from time to time to have a talk between these two classes of men. Every scientific study should be started by the scientist, but the sooner they can associate ordinary practical men with the work the better it will be. We practical seamen are more numerous than scientists; we constantly navigate the sea, and we have more opportunities of making contributions to science than they have. Certainly, they can make their observations in a more exact way than we can, but the laws of nature—particularly those concerning Oceanography—are so imperfectly known, that there is very much to be done even by the rough hands of the ordinary seamen.

Rotational Characteristics of the Green Solar Corona: 1947-1991

1994 ◽  
Vol 144 ◽  
pp. 139-141 ◽  
Author(s):  
J. Rybák ◽  
V. Rušin ◽  
M. Rybanský
Keyword(s):  
Solar Corona ◽  
World Wide ◽  
Rotation Period ◽  
Original Data ◽  
Coronal Emission ◽  
Time Intervals ◽  
Data Set ◽  
The World ◽  
Coronal Emission Line ◽  
Homogeneous Data

AbstractFe XIV 530.3 nm coronal emission line observations have been used for the estimation of the green solar corona rotation. A homogeneous data set, created from measurements of the world-wide coronagraphic network, has been examined with a help of correlation analysis to reveal the averaged synodic rotation period as a function of latitude and time over the epoch from 1947 to 1991.The values of the synodic rotation period obtained for this epoch for the whole range of latitudes and a latitude band ±30° are 27.52±0.12 days and 26.95±0.21 days, resp. A differential rotation of green solar corona, with local period maxima around ±60° and minimum of the rotation period at the equator, was confirmed. No clear cyclic variation of the rotation has been found for examinated epoch but some monotonic trends for some time intervals are presented.A detailed investigation of the original data and their correlation functions has shown that an existence of sufficiently reliable tracers is not evident for the whole set of examinated data. This should be taken into account in future more precise estimations of the green corona rotation period.

Sign in / Sign up

Export Citation Format

Share Document