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            "description": "Weather models begin their forecasts by integrating observations from ground stations, aircraft, balloons, and a growing constellation of Earth observing satellites to estimate the most realistic atmospheric state. The Goddard Earth Observing System Forward Processing (GEOS-FP) system is a research model maintained by NASA’s Global Modeling and Assimilation Office to demonstrate innovative new ways to use satellite data to improve predictions of weather, air quality, and greenhouse gases and to help NASA collect new observations of our home planet. Near surface temperature is calculated by sampling model fields at 2 meters (about 6 feet) above Earth’s surface, helping scientists communicate to the general public the air temperatures they encounter. Variations reflect differences in daytime and nighttime temperatures and the influence of large scale weather systems. As the planet warms in response to rising greenhouse gas concentrations, scientists are also tracking changes in the frequency of heat waves and their potential impacts on human health.",
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            "title": "For More Information",
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            "description": "See [https://gmao.gsfc.nasa.gov/weather-analysis-prediction/](https://gmao.gsfc.nasa.gov/weather-analysis-prediction/)",
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            "description": "Documentation: Lucchesi, R., 2018: File Specification for GEOS FP. GMAO Office Note No. 4 (Version 1.2), 61 pp, available from [https://gmao.gsfc.nasa.gov/pubs/docs/Lucchesi1203.pdf](https://gmao.gsfc.nasa.gov/pubs/docs/Lucchesi1203.pdf)",
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            "title": "The Different Sources of Atmospheric Methane",
            "description": "This data visualization shows methane (CH₄) in the Earth’s atmosphere during 2021. The colors represent contributions from different sources: agriculture and waste (fuchsia), industry (blue), wetlands (green), wildfires and cropland fires (yellow), and other natural sources (gray).",
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            "title": "GEOS-FP Near-Surface Humidity",
            "description": "Near-surface Humidity, also known as specific humidity (Q2M) from NASA’s GEOS-FP system. GEOS-FP combines millions of weather observations with a predictive model to create a global best estimate of weather conditions that are used to begin a forecast.",
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            "url": "https://svs.gsfc.nasa.gov/5151/",
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            "title": "Particulate Matter (PM) 2.5",
            "description": "Near surface concentration of fine particular matter (PM2.5) estimated from NASA’s aerosol and weather fields produced by NASA’s GEOS-CF model.",
            "release_date": "2023-09-26T17:00:00-04:00",
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            "page_type": "Visualization",
            "title": "Near surface Ozone (O3)",
            "description": "Near surface concentration of ozone (O3) estimated by NASA’s GEOS-CF model.",
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            "title": "Carbon Monoxide (CO)",
            "description": "Near surface concentration of carbon monoxide (CO) estimated by NASA’s GEOS-CF model.",
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            "url": "https://svs.gsfc.nasa.gov/5154/",
            "page_type": "Visualization",
            "title": "Nitrogen Oxides (NOx)",
            "description": "Near surface concentration of Nitrogen Oxides (NOx) estimated from concentrations of nitrogen oxide and nitrogen dioxide produced by  NASA’s GEOS-CF model.",
            "release_date": "2023-09-26T17:00:00-04:00",
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                "media_type": "Image",
                "alt_text": "Near surface concentration of Nitrogen Oxides (NOx) estimated from concentrations of nitrogen oxide and nitrogen dioxide produced by NASA’s GEOS-CF model.",
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