Virtual Alaska Weather Symposia

  1. September 25, 2019 @ 11:00 am to 12:00 pm
    Speaker: Dave Snider, Alaska Weather TV Program Leader, NOAA NWS Alaska Region

    Dave will talk about the challenges of communicating with a social media audience, and share tips and considerations for crafting an understandable, eye-catching message, and shareable message for your audience.

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  2. Wednesday, August 21, 2019 at 11:00 AM AKDT
    Aaron Jacobs, NWS Juneau & Martin Ralph, Scripps Institution of Oceanography
    Atmospheric rivers (ARs) have the ability to transport large amounts of water vapor from the tropics poleward into the upper latitudes that can have positive and negative affects on the environment and society. For example, ARs events can cause dangerous flooding, debris flows and large amounts of snowfall but at the same time can be beneficial to the environment especially areas that are in a drought. 20+ years of research have increased our understanding of the dynamics of ARs. At the same time the improved remote sensing and better numerical weather prediction has given forecasters increased ability to monitor atmospheric rivers, although forecast challenges associated with ARs remain. This talk will review what we know of ARs, how forecasters monitor these events, what type of impacts they can have on communities of Alaska and ongoing research particular to Alaska.

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  3. Wednesday, July 17, 2019 at 11:00 AM AKDT
    Speaking: Ralph Ferraro, NOAA
    Passive microwave sensors on low earth orbiting satellites have the ability to monitor several parameters associated with the Earth's hydrological cycle - falling precipitation, snow and ice parameters, soil moisture, etc. These observations are particularly useful for high latitude locations where geostationary satellites have limited coverage. In this presentation, a review of the methodology used to retrieve this information will be given, then followed by several practical applications for weather forecasting and climate monitoring.

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  4. Wednesday, June 12, 2019 at 11:00 AM AKDT
    Speaking: Tim Schmit, Research Satellite Meteorologist NOAA NESDIS STAR at the University of Wisconsin
    There have been many recent changes to better observe Alaska from the Geostationary Operational Environmental Satellite (GOES) perspective. The most significant change was on February 12, 2019 when GOES-17 became NOAA’s operational West geostationary satellite. The Advanced Baseline Imager (ABI) has spectral bands covering the visible, near-infrared and infrared portions of the electro-magnetic spectrum. The ABI represents a major improvement from the legacy GOES imagers for many attributes, such as those relating to: spectral, spatial, temporal, radiometric, and image navigation/registration. An on-board cooling issue associated with the Loop Heat Pipe on GOES-17 causes degradation for certain periods of the year, at certain times, mostly at night. The affected spectral bands are those with wavelengths greater than 4 micrometers with effects that start with biasing, striping, banding, and ultimately complete saturation for the most affected bands. In order to mitigate the impacts of this issue, improvements to the calibration procedures are improving the image quality before and after saturation occurs. These improvements include a modification to the ABI timeline in the 10-min Full Disk flex mode, predictive calibration, and other changes. Once a spectral band is saturated, there is little that can be done to better calibrate the data. The current status of Level 2 or derived products, such as cloud heights or atmospheric motion vectors, from the GOES-17 ABI will also be covered.

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  5. Wednesday, April 24, 2019 at 11:00 AM AKDT
    Speaking: Kyle Van Peursem, NOAA
    Snow avalanches are the most deadly natural hazard on National Forest land, killing around 25-30 people in the U.S. each year, with 3-4 of those fatalities occurring in Alaska. Avalanches also pose a serious threat to transportation infrastructure across the state, including vital highways and railroads. Several avalanche forecasting centers work throughout the winter to help keep Alaskans safe by issuing backcountry avalanche forecasts and performing avalanche control work. Weather is one of three main contributors to avalanche hazard and a successful avalanche forecasting center relies heavily on accurate and timely weather observations and forecasts. This presentation will discuss ways in which various NWS offices provide support to avalanche forecasting operations and highlights how the NWS Anchorage office has engaged its core partners while providing vital support during significant avalanche events across Southcentral Alaska. Additionally, this presentation will discuss new and up and coming technology, including testing of a coupled weather and snow cover model to simulate snowpack and avalanche conditions throughout several mountain ranges in Southcentral Alaska.

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Virtual Alaska Weather Symposia

IARC Group Plus

This partnership between the Geographic Information Network of Alaska (GINA) and the NOAA National Weather Service (NWS) brings cutting edge satellite based presentations to a broad audience and complements GINA’s and NWS’s deep pool of speakers and topics.

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