Pääjärvi representative basin in Finland: comparative studies of climatological conditions over a lake and the surrounding land areas in 1969-1970
Lake and land climatological stations in the study area were compared for air temperature and humidity, wind velocity, cloud cover, precipitation and evaporation. The biggest differences between the stations in regard to their meteorological parameters were found in the daily temperature minima, whi...
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| Format: | Article |
| Language: | English |
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Geographical Society of Finland
1976-01-01
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| Series: | Fennia: International Journal of Geography |
| Online Access: | https://fennia.journal.fi/article/view/9207 |
| _version_ | 1818277147353022464 |
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| author | Esko Elomaa |
| author_facet | Esko Elomaa |
| author_sort | Esko Elomaa |
| collection | DOAJ |
| description | Lake and land climatological stations in the study area were compared for air temperature and humidity, wind velocity, cloud cover, precipitation and evaporation. The biggest differences between the stations in regard to their meteorological parameters were found in the daily temperature minima, which were greatly affected by the amount of cloud cover and wind velocity, and in the periodic and aperiodic fluctuations of air temperature. The sums of effective growing temperatures were 10 ... 15 % higher over the lake than at the land stations. Water vapour pressure was higher over the lake than over land. Precipitation from June to October was about 10 % smaller on the lake than at the land stations. Evaporation was measured at the land stations with Class A pans, and evaporation from Lake Pääjärvi was estimated by the bulk‑aerodynamic method. The rate of evaporation from the lake was greater than that from the pans. |
| first_indexed | 2024-12-12T22:56:55Z |
| format | Article |
| id | doaj.art-74a4056b47a94438b7aa3a7438fc72a7 |
| institution | Directory Open Access Journal |
| issn | 1798-5617 |
| language | English |
| last_indexed | 2024-12-12T22:56:55Z |
| publishDate | 1976-01-01 |
| publisher | Geographical Society of Finland |
| record_format | Article |
| series | Fennia: International Journal of Geography |
| spelling | doaj.art-74a4056b47a94438b7aa3a7438fc72a72022-12-22T00:08:56ZengGeographical Society of FinlandFennia: International Journal of Geography1798-56171976-01-011461Pääjärvi representative basin in Finland: comparative studies of climatological conditions over a lake and the surrounding land areas in 1969-1970Esko Elomaa0Lammi Biological Station, University of HelsinkiLake and land climatological stations in the study area were compared for air temperature and humidity, wind velocity, cloud cover, precipitation and evaporation. The biggest differences between the stations in regard to their meteorological parameters were found in the daily temperature minima, which were greatly affected by the amount of cloud cover and wind velocity, and in the periodic and aperiodic fluctuations of air temperature. The sums of effective growing temperatures were 10 ... 15 % higher over the lake than at the land stations. Water vapour pressure was higher over the lake than over land. Precipitation from June to October was about 10 % smaller on the lake than at the land stations. Evaporation was measured at the land stations with Class A pans, and evaporation from Lake Pääjärvi was estimated by the bulk‑aerodynamic method. The rate of evaporation from the lake was greater than that from the pans.https://fennia.journal.fi/article/view/9207 |
| spellingShingle | Esko Elomaa Pääjärvi representative basin in Finland: comparative studies of climatological conditions over a lake and the surrounding land areas in 1969-1970 Fennia: International Journal of Geography |
| title | Pääjärvi representative basin in Finland: comparative studies of climatological conditions over a lake and the surrounding land areas in 1969-1970 |
| title_full | Pääjärvi representative basin in Finland: comparative studies of climatological conditions over a lake and the surrounding land areas in 1969-1970 |
| title_fullStr | Pääjärvi representative basin in Finland: comparative studies of climatological conditions over a lake and the surrounding land areas in 1969-1970 |
| title_full_unstemmed | Pääjärvi representative basin in Finland: comparative studies of climatological conditions over a lake and the surrounding land areas in 1969-1970 |
| title_short | Pääjärvi representative basin in Finland: comparative studies of climatological conditions over a lake and the surrounding land areas in 1969-1970 |
| title_sort | paajarvi representative basin in finland comparative studies of climatological conditions over a lake and the surrounding land areas in 1969 1970 |
| url | https://fennia.journal.fi/article/view/9207 |
| work_keys_str_mv | AT eskoelomaa paajarvirepresentativebasininfinlandcomparativestudiesofclimatologicalconditionsoveralakeandthesurroundinglandareasin19691970 |