{ "id": 3733, "url": "https://svs.gsfc.nasa.gov/3733/", "page_type": "Visualization", "title": "MERRA Wind", "description": "Retrospective-analyses (or reanalyses) have been a critical tool in studying weather and climate variability for the last 15 years. Reanalyses blend the continuity and breadth of output data of a numerical model with the constraint of vast quantities of observational data. The result is a long-term continuous data record. The Modern Era Retrospective-analysis for Research and Applications was developed to support NASA's Earth science objectives, by applying the state-of-the-art GMAO data assimilation system that includes many modern observing systems (such as EOS) in a climate framework.The MERRA time period covers the modern era of remotely sensed data, from 1979 through the present, and the special focus of the atmospheric assimilation is the hydrological cycle.The time period covered by the visualization is the months of May, June, and July of 1988 and 1993, two years with contrasting extreme weather events during the summer: a drought through the midwestern states of the US in 1988, and heavy rains and flooding through the same region in 1993.This visualization shows the combined U and V components of wind at three different pressure levels: 850 mb, 500 mb, and 300 mb. The pressure coordinate is greatly exaggerated.This animation was created as part of a presentation for the Nasa Center for Climate Simulation (NCCS) hyperwall display. This is a set of tiled high definition displays consisting of 5 displays across by 3 displays down. The full resolution of all combined displays is 6840 pixels accross by 2304 pixels down. For the full presentation, see the link below. || ", "release_date": "2010-06-24T00:00:00-04:00", "update_date": "2025-02-02T22:01:58.097727-05:00", "main_image": { "id": 491910, "url": "https://svs.gsfc.nasa.gov/vis/a000000/a003700/a003733/winds_88_00001.jpg", "filename": "winds_88_00001.jpg", "media_type": "Image", "alt_text": "Drought, Summer 1988", "width": 1280, "height": 720, "pixels": 921600 }, "main_video": null, "main_credits": { "Visualizations by": [ { "name": "Trent L. Schindler", "employer": "UMBC" } ] }, "progress": "Complete", "media_groups": [ { "id": 353116, "url": "https://svs.gsfc.nasa.gov/3733/#media_group_353116", "widget": "Basic text with HTML", "title": "", "caption": "", "description": "Retrospective-analyses (or reanalyses) have been a critical tool in studying weather and climate variability for the last 15 years. Reanalyses blend the continuity and breadth of output data of a numerical model with the constraint of vast quantities of observational data. The result is a long-term continuous data record. The Modern Era Retrospective-analysis for Research and Applications was developed to support NASA's Earth science objectives, by applying the state-of-the-art GMAO data assimilation system that includes many modern observing systems (such as EOS) in a climate framework.

The MERRA time period covers the modern era of remotely sensed data, from 1979 through the present, and the special focus of the atmospheric assimilation is the hydrological cycle.

The time period covered by the visualization is the months of May, June, and July of 1988 and 1993, two years with contrasting extreme weather events during the summer: a drought through the midwestern states of the US in 1988, and heavy rains and flooding through the same region in 1993.

This visualization shows the combined U and V components of wind at three different pressure levels: 850 mb, 500 mb, and 300 mb. The pressure coordinate is greatly exaggerated.

This animation was created as part of a presentation for the Nasa Center for Climate Simulation (NCCS) hyperwall display. This is a set of tiled high definition displays consisting of 5 displays across by 3 displays down. The full resolution of all combined displays is 6840 pixels accross by 2304 pixels down. 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[http://svsdev.gsfc.nasa.gov/vis/a000000/a003700/a003726/](http://svsdev.gsfc.nasa.gov/vis/a000000/a003700/a003726/)", "items": [], "extra_data": {} } ], "studio": "svs", "funding_sources": [ "ESE" ], "credits": [ { "role": "Animator", "people": [ { "name": "Trent L. 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Schubert", "employer": "NASA/GSFC" } ] } ], "missions": [], "series": [], "tapes": [], "papers": [], "datasets": [], "nasa_science_categories": [ "Earth" ], "keywords": [ "Atmosphere", "Atmospheric Water Vapor", "Circulation", "Climate", "Drought", "Earth Science", "Fires", "floods", "For Educators", "HDTV", "Human Dimensions", "Hydrosphere", "Hyperwall", "MERRA", "Moisture", "Natural hazards", "precipitation", "surface water", "Temperature", "Water Vapor" ], "recommended_pages": [], "related": [ { "id": 10856, "url": "https://svs.gsfc.nasa.gov/10856/", "page_type": "Produced Video", "title": "Recreating The Wind", "description": "The summer of 1988 saw much of the United States bake in a heat wave that resulted in the worst season of drought since the 1930s. Five years later in 1993, drenching rains in the spring and summer caused historic flooding in Midwest states. A complex combination of weather and climate factors gave rise to these opposing catastrophes. To better understand these events scientists used an integrated record of Earth's weather and climate over the past three decades that combines computer modeling with a broad collection of satellite and meteorological observations. This dataset, called the Modern Era Retrospective-Analysis for Research and Applications (MERRA), allows scientists to pinpoint the unique conditions behind the 1988 drought and 1993 floods. The pattern of air circulation over the middle of the country in 1988 blocked the typical movement of moisture from the Gulf of Mexico northward. Conversely, 1993 saw an extreme intensification of winds pushing rain clouds north from the Gulf of Mexico. In the visualizations below, look for the differences in this recreation of wind patterns over the United States from May 1 to July 31 in 1988 and 1993. || ", "release_date": "2011-11-29T00:00:00-05:00", "update_date": "2023-05-03T13:53:26.471073-04:00", "main_image": { "id": 480791, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010800/a010856/winds_1988_00601_cover_1024x576.jpg", "filename": "winds_1988_00601_cover_1024x576.jpg", "media_type": "Image", "alt_text": "A powerful computing tool allows scientists to compare two extreme seasons in recent American history.", "width": 1024, "height": 576, "pixels": 589824 } } ], "sources": [], "products": [], "newer_versions": [], "older_versions": [], "alternate_versions": [] }