Citizen Weather Observer Program (CWOP)
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Imet-4 Radiosonde 403 Mhz GPS Synoptic
iMet-4 Radiosonde 403 MHz GPS Synoptic Technical Data Sheet Temperature and Humidity Radiosonde Data Transmission The iMet-4 measures air temperature with a The iMet-4 radiosonde can transmit to an small glass bead thermistor. Its small size effective range of over 250 km*. minimizes effects caused by long and short- wave radiation and ensures fast response times. A 6 kHz peak-to-peak FM transmission maximizes efficiency and makes more channels The humidity sensor is a thin-film capacitive available for operational use. Seven frequency polymer that responds directly to relative selections are pre-programmed - with custom humidity. The sensor incorporates a temperature programming available. sensor to minimize errors caused by solar heating. Calibration Pressure and Height The iMet-4’s temperature and humidity sensors are calibrated using NIST traceable references to As recommended by GRUAN3, the iMet-4 is yield the highest data quality. equipped with a pressure sensor to calculate height at lower levels in the atmosphere. Once Benefits the radiosonde reaches the optimal height, pressure is derived using GPS altitude combined • Superior PTU performance with temperature and humidity data. • Lightweight, compact design • No assembly or recalibration required The pressure sensor facilitates the use of the • GRUAN3 qualified (pending) sonde in field campaigns where a calibrated • Status LED indicates transmit frequency barometer is not available to establish an selection and 3-D GPS solution accurate ground observation for GPS-derived • Simple one-button user interface pressure. For synoptic use, the sensor is bias adjusted at ground level. Winds Data from the radiosonde's GPS receiver is used to calculate wind speed and direction. -
GPS-Based Measurement of Height and Pressure with Vaisala Radiosonde RS41
GPS-Based Measurement of Height and Pressure with Vaisala Radiosonde RS41 WHITE PAPER Table of Contents CHAPTER 1 Introduction ................................................................................................................................................. 4 Executive Summary of Measurement Performance ............................................................................. 5 CHAPTER 2 GPS Technology in the Vaisala Radiosonde RS41 ........................................................................................... 6 Radiosonde GPS Receiver .................................................................................................................. 6 Local GPS Receiver .......................................................................................................................... 6 Calculation Algorithms ..................................................................................................................... 6 CHAPTER 3 GPS-Based Measurement Methods ............................................................................................................... 7 Height Measurement ......................................................................................................................... 7 Pressure Measurement ..................................................................................................................... 7 Measurement Accuracy..................................................................................................................... 8 CHAPTER -
ESSENTIALS of METEOROLOGY (7Th Ed.) GLOSSARY
ESSENTIALS OF METEOROLOGY (7th ed.) GLOSSARY Chapter 1 Aerosols Tiny suspended solid particles (dust, smoke, etc.) or liquid droplets that enter the atmosphere from either natural or human (anthropogenic) sources, such as the burning of fossil fuels. Sulfur-containing fossil fuels, such as coal, produce sulfate aerosols. Air density The ratio of the mass of a substance to the volume occupied by it. Air density is usually expressed as g/cm3 or kg/m3. Also See Density. Air pressure The pressure exerted by the mass of air above a given point, usually expressed in millibars (mb), inches of (atmospheric mercury (Hg) or in hectopascals (hPa). pressure) Atmosphere The envelope of gases that surround a planet and are held to it by the planet's gravitational attraction. The earth's atmosphere is mainly nitrogen and oxygen. Carbon dioxide (CO2) A colorless, odorless gas whose concentration is about 0.039 percent (390 ppm) in a volume of air near sea level. It is a selective absorber of infrared radiation and, consequently, it is important in the earth's atmospheric greenhouse effect. Solid CO2 is called dry ice. Climate The accumulation of daily and seasonal weather events over a long period of time. Front The transition zone between two distinct air masses. Hurricane A tropical cyclone having winds in excess of 64 knots (74 mi/hr). Ionosphere An electrified region of the upper atmosphere where fairly large concentrations of ions and free electrons exist. Lapse rate The rate at which an atmospheric variable (usually temperature) decreases with height. (See Environmental lapse rate.) Mesosphere The atmospheric layer between the stratosphere and the thermosphere. -
Retrieving Wind Speed and Direction from WSR-88D Single- Doppler Measurements of Thunderstorm Winds
6th American Association for Wind Engineering Workshop (online) Clemson University, Clemson, SC, USA May 12-14, 2021 Retrieving wind speed and direction from WSR-88D single- Doppler measurements of thunderstorm winds Ibrahim Ibrahima,*, Gregory A. Kopp b, David M. L. Sills c a Northern Tornadoes Project (Western University), London, ON, Canada, [email protected] b Northern Tornadoes Project (Western University), London, ON, Canada, [email protected] c Northern Tornadoes Project (Western University), London, ON, Canada, [email protected] ABSTRACT: The evaluation of wind load values is dependent on the historical wind speeds recorded by field measurements, mainly anemometers. Such one-point measurement procedure is sufficient for dealing with structures of smaller scales. Nevertheless, special structures like long-span bridges and electricity transmission lines need a more comprehensive procedure, especially for regions prone to extreme wind events of limited size like thunderstorms. These events are less probable to be picked up by one-point measurements. Accordingly, the current study explores the use of Doppler weather radar measurements to estimate wind speeds associated with thunderstorm weather systems. The study estimates localized wind speeds down to the scale of hundreds of meters by implementing an algorithm to separate different weather systems within each radar scan and resolving them separately. The estimated peak event wind speeds are compared with ASOS anemometer measurements for comparison. Keywords: Doppler Radar, Wind Retrieval, NEXRAD, Non-synoptic Wind 1. BACKGROUND Providing loading guidelines for the design of safe structures is one of the main concerns of Wind Engineering. Extreme value analysis is performed on a set of historical wind speed anemometer recordings. -
Coastal Weather Program
Commandant 2100 Second Street, S.W. United States Coast Guard Washington, DC 20593-0001 (202) 267-1450 COMDTINST 3140.3D 13 JAN 1988 COMMANDANT INSTRUCTION 3140.3D Subj: Coastal Weather Program 1. PURPOSE. To set forth policy for weather observation, reporting, and dissemination from Coast Guard shore units and offshore light stations; and, to direct the coordination with the National Weather Service (NWS) for these activities. 2. DIRECTIVES AFFECTED. Commandant Instruction 3140.3C is canceled. 3. PROGRAM OBJECTIVES. To support the National Weather Service in conducting its federally-mandated weather forecasting and dissemination program by: a. Designating those stations and units required to report weather observations. b. Ensuring that weather reports are made in the suitable format as prescribed by the NWS. c. Ensuring that uniform and timely communication procedures and methods are used to convey this information to the NWS. d. Providing procedures for units not participating in a regular weather reporting program which may be required to make weather observations in support of NWS special programs. 4. POLICY. Title 14 Section 147 of the U.S. Code authorizes the Commandant to procure, maintain, and make available facilities and assistance for observing, investigating, and communicating weather phenomena and for disseminating weather data, forecasts and warnings in cooperation with the Director of the National Weather Service. To this end the Commandant supports a program to ensure the high quality and quantity of weather observations for NWS marine weather forecasts. The Coast Guard, as a user, depends upon high quality forecasts for our missions in the marine environment. COMDTINST 3140.3D 13 JAN 1988 5. -
Meteorological Monitoring Guidance for Regulatory Modeling Applications
United States Office of Air Quality EPA-454/R-99-005 Environmental Protection Planning and Standards Agency Research Triangle Park, NC 27711 February 2000 Air EPA Meteorological Monitoring Guidance for Regulatory Modeling Applications Air Q of ua ice li ff ty O Clean Air Pla s nn ard in nd g and Sta EPA-454/R-99-005 Meteorological Monitoring Guidance for Regulatory Modeling Applications U.S. ENVIRONMENTAL PROTECTION AGENCY Office of Air and Radiation Office of Air Quality Planning and Standards Research Triangle Park, NC 27711 February 2000 DISCLAIMER This report has been reviewed by the U.S. Environmental Protection Agency (EPA) and has been approved for publication as an EPA document. Any mention of trade names or commercial products does not constitute endorsement or recommendation for use. ii PREFACE This document updates the June 1987 EPA document, "On-Site Meteorological Program Guidance for Regulatory Modeling Applications", EPA-450/4-87-013. The most significant change is the replacement of Section 9 with more comprehensive guidance on remote sensing and conventional radiosonde technologies for use in upper-air meteorological monitoring; previously this section provided guidance on the use of sodar technology. The other significant change is the addition to Section 8 (Quality Assurance) of material covering data validation for upper-air meteorological measurements. These changes incorporate guidance developed during the workshop on upper-air meteorological monitoring in July 1998. Editorial changes include the deletion of the “on-site” qualifier from the title and its selective replacement in the text with “site specific”; this provides consistency with recent changes in Appendix W to 40 CFR Part 51. -
Allianz Risk Barometer
ALLIANZ GLOBAL CORPORATE & SPECIALTY ALLIANZ RISK BAROMETER IDENTIFYING THE MAJOR BUSINESS RISKS FOR 2021 The most important corporate perils for the next 12 months and beyond, based on the insight of 2,769 risk management experts from 92 countries and territories. About Allianz Global Corporate & Specialty Allianz Global Corporate & Specialty (AGCS) is a leading global corporate insurance carrier and a key business unit of Allianz Group. We provide risk consultancy, Property-Casualty insurance solutions and alternative risk transfer for a wide spectrum of commercial, corporate and specialty risks across 10 dedicated lines of business. Our customers are as diverse as business can be, ranging from Fortune Global 500 companies to small businesses, and private individuals. Among them are not only the world’s largest consumer brands, tech companies and the global aviation and shipping industry, but also wineries, satellite operators or Hollywood film productions. They all look to AGCS for smart answers to their largest and most complex risks in a dynamic, multinational business environment and trust us to deliver an outstanding claims experience. Worldwide, AGCS operates with its own teams in 31 countries and through the Allianz Group network and partners in over 200 countries and territories, employing over 4,450 people. As one of the largest Property-Casualty units of Allianz Group, we are backed by strong and stable financial ratings. In 2019, AGCS generated a total of €9.1 billion gross premium globally. www.agcs.allianz.com/about-us/about-agcs.html METHODOLOGY CONTENTS The 10th Allianz Risk Barometer is the biggest yet, incorporating the views of a record 2,769 respondents from 92 countries and territories. -
Anemometer Lesson
Anemometers: Measuring the Wind Objectives Students will: • Learn about anemometers. • Learn about engineering design. • Learn how engineering can help solve society's challenges. • Learn about teamwork and problem solving. Suggested Grade Level 3rd – 12th Subject Areas Science, Math, Engineering Timeline 45 minutes Standards • 3-PS2-1. Plan and conduct an investigation to provide evidence of the effects of balanced and unbalanced forces on the motion of an object. • 4-PS3-1. Use evidence to construct an explanation relating the speed of an object to the energy of that object. • 3-5-ETS1-1. Define a simple design problem reflecting a need or a want that includes specified criteria for success and constraints on materials, time, or cost. • 3-5-ETS1-2. Generate and compare multiple possible solutions to a problem based on how well each is likely to meet the criteria and constraints of the problem. • 3-5-ETS1-3. Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved. • MS-ETS1-2. Evaluate competing design solutions using a systematic process to determine how well they meet the criteria and constraints of the problem. • HS-PS3-3. Design, build, and refine a device that works within given constraints to convert one form of energy into another form of energy. 21st Century Essential Skills • Critical thinking/Problem solving • Creativity/imagination • Collaboration and Teamwork Revised July/2019 Confidential and Proprietary to the Space Foundation • Carrying out investigations • Obtaining/evaluating/communicating ideas Background Weather patterns are a natural phenomenon that have been observed since the beginning of time. -
Ront November-Ddecember, 2002 National Weather Service Central Region Volume 1 Number 6
The ront November-DDecember, 2002 National Weather Service Central Region Volume 1 Number 6 Technology at work for your safety In this issue: Conceived and deployed as stand alone systems for airports, weather sensors and radar systems now share information to enhance safety and efficiency in the National Airspace System. ITWS - Integrated Jim Roets, Lead Forecaster help the flow of air traffic and promote air Terminal Aviation Weather Center safety. One of those modernization com- Weather System The National Airspace System ponents is the Automated Surface (NAS) is a complex integration of many Observing System (ASOS). technologies. Besides the aircraft that fly There are two direct uses for ASOS, you and your family to vacation resorts, and the FAA’s Automated Weather or business meetings, many other tech- Observing System (AWOS). They are: nologies are at work - unseen, but critical Integrated Terminal Weather System MIAWS - Medium to aviation safety. The Federal Aviation (ITWS), and the Medium Intensity Intensity Airport Administration (FAA) is undertaking a Airport Weather System (MIAWS). The Weather System modernization of the NAS. One of the technologies that make up ITWS, shown modernization efforts is seeking to blend in Figure 1, expand the reach of the many weather and aircraft sensors, sur- observing site from the terminal to the en veillance radar, and computer model route environment. Their primary focus weather output into presentations that will is to reduce delays caused by weather, Gust fronts - Evolution and Detection Weather radar displays NWS - Doppler FAA - ITWS ASOS - It’s not just for airport observations anymore Mission Statement To enhance aviation safety by Source: MIT Lincoln Labs increasing the pilots’ knowledge of weather systems and processes Figure 1. -
Manual for Real-Time Quality Control of Wind Data
Direction Manual for Real-Time Quality Control of Wind Data A Guide to Quality Control and Quality Assurance for Coastal and Oceanic Wind Observations Version 1.0 October 2014 Document Validation U.S. IOOS Program Office Validation 10/17/2014 Zdenka S. Willis, Director, U.S. IOOS Program Office Date QARTOD Project Manager Validation 10/17/2014 Joseph Swaykos, NOAA National Data Buoy Center Date QARTOD Board of Advisors Validation 10/17/2014 Julianna O. Thomas, Southern California Coastal Ocean Observing System Date ii Table of Contents Document Validation ...................................................................................... ii Table of Contents ........................................................................................... iii List of Figures ................................................................................................. iv List of Tables ................................................................................................... iv Revision History ............................................................................................... v Endorsement Disclaimer ................................................................................ vi Acknowledgements ....................................................................................... vii Acronyms and Abbreviations ....................................................................... viii Definitions of Selected Terms ........................................................................ ix 1.0 Background and -
Coop Station Observations
Department of Commerce $ National Oceanic & Atmospheric Administration $ National Weather Service NATIONAL WEATHER SERVICE MANUAL 10-1315 APRIL 18, 2007 Operations and Services Surface Observing Program (Land), NDSPD 10-13 Cooperative Station Observations NOTICE: This publication is available at: http://www.nws.noaa.gov/directives/. OPR: OS7 (J.Newkirk) Certified by: OS7 (D. McCarthy) Type of Issuance: Emergency SUMMARY OF REVISIONS: This Directive supersedes National Weather Service Manual, Cooperative Station Observations, dated September 21, 2006. Re-wrote section 4.1 page A-6, added M for missing data section 4 page D-15 and section 10 page E-6. Moved winterizing Universal Gage out of the F&P Section to the Universal Section. Minor word changes. Signed April 4, 2007 Dennis McCarthy Date Director, Office of Climate Water and Weather Services NWSM 10-1315 APRIL 18, 2007 Cooperative Station Observations Table of Contents: Page 1 Purpose.......................................................................................................................................3 2. Definition of a Cooperative Station...........................................................................................3 3. Reporting Elements....................................................................................................................3 3.1 Precipitation......................................................................................................................3 3.2 Air Temperature................................................................................................................3 -
Development of an in Situ Acoustic Anemometer to Measure Wind in the Stratosphere for SENSOR
https://doi.org/10.5194/amt-2021-76 Preprint. Discussion started: 19 May 2021 c Author(s) 2021. CC BY 4.0 License. Development of an in situ Acoustic Anemometer to Measure Wind in the Stratosphere for SENSOR Song Liang1,2, Hu Xiong1, Wei Feng1, Yan Zhaoai1,3, Xu Qingchen1, Tu Cui1,3 1Key Laboratory of Science and Technology on Environmental Space Situation Awareness, National 5 Space Science Center, Chinese Academy of Sciences, Beijing 100190, China 2College of Earth Sciences, University of Chinese Academy of Sciences, Beijing 100049, China 3College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China Correspondence to: Song Liang ([email protected]) 10 Abstract. The Stratospheric Environmental respoNses to Solar stORms (SENSOR) campaign investigates the influence of solar storms on the stratosphere. This campaign employs a long-duration zero-pressure balloon as a platform to carry multiple types of payloads during a series of flight experiments in the mid-latitude stratosphere from 2019 to 2022. This article describes the development and testing of an acoustic anemometer for obtaining in situ wind measurements along the balloon 15 trajectory. Developing this anemometer was necessary, as there is no existing commercial off-the-shelf product, to the authors’ knowledge, capable of obtaining in situ wind measurements on a high-altitude balloon or other similar floating platform in the stratosphere. The anemometer is also equipped with temperature, pressure, and humidity sensors from a Temperature-Pressure-Humidity measurement module, inherited from a radiosonde developed for sounding balloons. The acoustic anemometer and 20 other sensors were used in a flight experiment of the SENSOR campaign that took place in the Da chaidan District (95.37°E, 37.74°N) on 4 September 2019.