Abstract
This study examines recent changes in annual and seasonal relative humidity variations in Jordan. The analysis indicates an increasing trend in relative humidity at different stations. The analysis shows a significant increasing trend at Amman Airport Meteorological (AAM) station with a rate of increase 0.13% per year. These increasing trends are statistically significant during summer and autumn seasons. Finally, a major change point in the annual relative humidity occurred in 1979 at AAM station.
Highlights
Humidity is defined as the amount of water vapor in an air sample
This study aims to characterize the occurrence of abrupt changes and trends in relative humidity records in Jordan
We examine humidity records from other four stations in the country
Summary
Humidity is defined as the amount of water vapor in an air sample. The main sources of water vapor in the lower atmosphere are evaporation from the Earth's surface and transpiration by plants. The breakdown of methane by sunlight is another source. Atmospheric water vapor accounts for only about 1/10,000th of the total amount of water in the global hydrological cycle. Atmospheric water vapor is one of the most important factors in determining Earth's weather and climate, because of its role as a greenhouse gas and because of the large amounts of energy involved as water changes between the gaseous (vapor) phase and liquid and solid phases
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