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Temperature and humidity measurements at Jõulumäe
Organization(s):Estonian Learning Expedition
Country:Estonia
Student(s):Ketly Meitsar (Antsla Gümnaasium), Heidy-Elisabett Sõna (Rõngu Keskkool), Jelizaveta Norman (Narva Vanalinna Põhikool), Sille Kriis (Rõngu Keskkool), Rudolf Ruthe (Kääpa Kool), Ott-Oscar Põldmaa (Rakke Kool), Mariel Meeks (Antsla Gümnaasium)
Grade Level:Middle School (grades 6-8, ages 11-14)
GLOBE Member(s):Riina Hopp, Piia Post
Contributors:Johanna Raudsepp
Laura Altin
Report Type(s):Virtual Science Symposium Report
Protocols:Air Temperature, Surface Temperature, Relative Humidity
Presentation Video:
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Presentation Poster:
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Language(s):English
Date Submitted:2026-01-27
The study was conducted at Jõulumäe on August 17, 2025, as part of a GLOBE Program educational field expedition. The aim of the work was to investigate how surface temperature affects air temperature and air humidity under different landscape conditions and how these factors are interrelated within the local microclimate. Measurements were taken at ten locations in the vicinity of the Jõulumäe Recreational Sports Center, including sandy areas, pine forest, and the surroundings of a pond and a ditch.
Data were collected in accordance with the GLOBE atmosphere protocols, using a psychrometer, an infrared thermometer, and a cloud chart. The results showed that higher surface temperatures are associated with higher air temperatures, while in more humid and shaded locations the temperature is lower and air humidity is higher. The warmest readings were recorded in open areas, such as near the parking lot and on sandy ground, whereas the most humid conditions were found in the ditch and along the edge of the pond.
The study emphasizes that solar radiation, vegetation, and surface characteristics play an important role in the formation of microclimates. The results help to better understand the development of local climatic conditions and support the goals of the GLOBE Program to promote scientific thinking and environmental awareness among young people.