Researchers Gear Up For OLYMPEX

Complete transcript available.Music credit: “Reach Into The Night” by Andrew Michael Britton [PRS], David Stephen Goldsmith [PRS], Mikey Rowe [PRS] and “Progressive Practice” by Emmanuel David Lipszyc [SACEM], Franck Lascombes [SACEM], Sebastien Charles Lipszyc [SACEM] From Killer TracksWatch this video on the NASA Goddard YouTube channel. Drone footage captured of the Dual-frequency Dual-polarized Doppler Radar, or D3R, instrument in South Korea during the 2018 Winter Olympics. The D3R has been placed on the roof of the DaeGwallyeong Regional Weather Office to measure the quantity and types of falling snow, such as sleet or light and fluffy snow. The radar operates at very similar wavelengths to those used onboard the GPM Core Observatory to provide similar snow observations but from a different vantage point.Credit: Aaron Dabrowski The NASA-Unified Weather Research Forecast Model (NU-WRF) is one of five real-time research forecast models being used in ICE-POP. The animation is a NU-WRF model output that shows a snow event on Jan. 14, 2018 in South Korea. The left animation labeled "precipitation type" shows where rain, snow, ice, and freezing rain are predicted to occur at each forecast time. The right labeled "surface visibility" is a measure of the distance that people can see ahead of them.A GIF Optimized for Twitter. NASA's observations and experimental, real-time snow forecasts will be made at 16 different points near Olympic event venues every six hours and then relayed to Olympic officials. The NASA-Unified Weather Research Forecast Model (NU-WRF) is one of five real-time research forecast models being used in ICE-POP.A GIF optimized for Twitter. NASA's observations and experimental, real-time snow forecasts will be made at 16 different points near Olympic event venues every six hours and then relayed to Olympic officials. The NASA-Unified Weather Research Forecast Model (NU-WRF) is one of five real-time research forecast models being used in ICE-POP. NASA deployed the Dual-frequency Dual-polarized Doppler Radar (D3R) system that measures the quantity and types of falling snow. The NASA instrument uses a team of Colorado State University engineers to support radar development, maintenance, and operations and will operate the radar during the Olympic and Paralympic games. The animation here shows the D3R rotating to change its viewpoint (motion is not in real time).A GIF optimized for Twitter. NASA deployed the Dual-frequency Dual-polarized Doppler Radar (D3R) system that measures the quantity and types of falling snow. The NASA instrument uses a team of Colorado State University engineers to support radar development, maintenance, and operations and will operate the radar during the Olympic and Paralympic games. This Winter Olympics, NASA will be studying how well researchers can measure snow from the ground and space and provide better data for snowstorm predictions. NASA will make these observations as one of 20 agencies from eleven countries in a project led by the Korean Meteorological Administration called the International Collaborative Experiments for PyeongChang 2018 Olympic and Paralympic Winter Games, or ICE-POP. NASA.gov feature: NASA Seeks the Gold in Winter Olympics Snow For More InformationSee [NASA Seeks the Gold in Winter Olympics Snow](https://www.nasa.gov/feature/goddard/2018/gpm-ground-validation-at-the-olympics) Related pages

A profile video of Rachael Kroodsma.For complete transcript, click here. A profile video of Joe Zagrodnik.For complete transcript, click here. A GIF optimized for posting on Twitter. A GIF optimized for posting on Twitter. A GIF optimized for posting on Twitter. Video profiles of researchers and scientists in the field during the OLYMPEX field campaign (2015-2016).From November 10 through December 21, NASA and university scientists are taking to the field to study wet winter weather near Seattle, Washington. With weather radars, weather balloons, specialized ground instruments, and NASA's DC-8 flying laboratory, the science team will be verifying rain and snowfall observations made by the Global Precipitation Measurement (GPM) satellite mission on a NASA-led field campaign, The Olympic Mountain Experiment, or OLYMPEX.This is Rachael Kroodsma's profile on YouTube.This is Joe Zagrodnik's profile on YouTube. For More InformationSee [http://www.nasa.gov/feature/goddard/nasa-heads-to-pacific-northwest-for-field-campaign-to-measure-rain-and-snowfall](http://www.nasa.gov/feature/goddard/nasa-heads-to-pacific-northwest-for-field-campaign-to-measure-rain-and-snowfall) Related pages

B-roll of a Dual-frequency Dual-polarized Doppler Radar (D3R). The D3R is a fully polarimetric, scanning weather radar system operating at the nominal frequencies of 13.91 GHz and 35.56 GHz covering a maximum range of 30 km. The frequencies chosen allow close compatibility with the GPM Dual-frequency Precipitation Radar system, which was selected for flight on the GPM core spacecraft. This footage was captured during the NASA-led field campaign OLYMPEX. B-roll of the NASA NPOL radar is a research grade S-band, scanning dual-polarimetric radar. It is used to make accurate volumetric measurements of precipitation including rainfall rate, particle size distributions, water contents and precipitation type. This footage was captured during the NASA-led field campaign OLYMPEX. B-roll of scientists working on the ground instruments used to verify precipitation measurements from NASA's Global Precipitation Measurement (GPM) satellite. This footage was captured during the NASA-led field campaign OLYMPEX. B-roll of the landscape in Washington State where OLYMPEX is operating. Much of the study region is in Olympic National Park, where motorized vehicles are not permitted. Pack mules helped the research team carry equipment to high-elevation sites in early October.Credit: Lynn McMurdie/University of Washington. The Olympic Mountain Experiment, or OLYMPEX, is a NASA-led field campaign, which will take place on the Olympic Peninsula of Washington State from November 2015 through February 2016. The goal of the campaign is to collect detailed atmospheric measurements that will be used to evaluate how well rain-observing satellites measure rainfall and snowfall from space. In particular, OLYMPEX will be assessing satellite measurements made by the Global Precipitation Measurement (GPM) mission Core Observatory, a joint mission by NASA and the Japan Aerospace Exploration Agency (JAXA), which launched in 2014.This is a selection of b-roll that captures the scientists and instruments at work in Washington State. For More InformationSee [http://www.nasa.gov/feature/goddard/nasa-heads-to-pacific-northwest-for-field-campaign-to-measure-rain-and-snowfall](http://www.nasa.gov/feature/goddard/nasa-heads-to-pacific-northwest-for-field-campaign-to-measure-rain-and-snowfall) Related pages

Dropsonde Upload Exterior shots of the DC-8 Goddard Space Flight Center JPL Related pages

The Global Precipitation Measurement (GPM) mission produces NASA's most comprehensive global rain and snowfall product to date, called the Integrated Multi-satellite Retrievals for GPM (IMERG). It is computed using data from the GPM constellation of satellites — a network of international satellites that currently includes the GPM Core Observatory, GCOM-W1, NOAA-18, NOAA-19, DMSP F-16, DMSP F-17, DMSP F-18, Metop-A, and Metop-B. The global IMERG dataset provides precipitation rates for the entire world every 30 minutes. Although the process to create the combined dataset is intensive, the GPM team creates a preliminary, near-real-time dataset of precipitation within several hours of data acquisition. This visualization shows the most currently available precipitation data from IMERG, depicting how rain and snowstorms move around the planet. As scientists work to understand all the elements of Earth's climate and weather systems, and how they could change in the future, GPM provides a major step forward in providing comprehensive and consistent measurements of precipitation for scientists and a wide variety of user communities. An animation of the most currently available global precipitation data from IMERG. Colorbar for frozen precipitation Color bar for liquid precipitation An image of the most currently available global precipitation data from IMERG. Related pages

Various beauty passes of the GPM Core spacecraft. The GPM Core satellite cruises over a hurricane. A variety of animated beauty passes of the Global Precipitation Measurement (GPM) Core spacecraft. Related pages

GPM Constellation with clock GPM Constellation without clock Nine U.S. and international satellites will soon be united by the Global Precipitation Measurement (GPM) mission, a partnership co-led by NASA and the Japan Aerospace Exploration Agency (JAXA). NASA and JAXA will provide the GPM Core satellite to serve as a reference for precipitation measurements made by this constellation of satellites, which will be combined into a single global dataset continually refreshed every three hours. While each partner satellite has its own mission objective, they all carry a type of instrument called a radiometer that measures radiated energy from rainfall and snowfall. The GPM Core satellite carries two instruments: a state-of-the-art radiometer called the GPM Microwave Imager (GMI) and the first space-borne Dual-frequency Precipitation Radar (DPR), which sees the 3D structure of falling rain and snow. The DPR and GMI work in concert to provide a unique database that will be used to improve the accuracy and consistency of measurements from all partner satellites, which will then be combined into the uniform global precipitation dataset. In this animation the orbit paths of the partner satellites of the GPM constellation fill in blue as the instruments pass over Earth. Rainfall appears light blue for light rain, yellow for moderate, and red for heavy rain. Partner satellites are traced in green and purple, and the GPM Core is traced in red. The GPM Core observatory is currently being built and tested at NASA's Goddard Space Flight Center in Greenbelt, Md. It is scheduled to launch from Tanegashima space center in Japan in early 2014. Related pages