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The average annual temperature in Tbilisi is 13.8 °C (56.8 °F). January is the coldest month with an average temperature of 2.7 °C (36.9 °F). July is the hottest month with an average temperature of 25.4 °C (77.7 °F). Daytime high temperatures reach or exceed 32 °C (90 °F) on an average of 22 days during a typical year.
Most of Northern European Russia and Siberia between the Scandinavian Peninsula and the Pacific Ocean has a subarctic climate, with extremely severe winters (Dfd, Dwd, Dsd) in the inner regions of Northeast Siberia (mostly the Sakha Republic) with the record low temperature of −67.8 °C or −90.0 °F), and more moderate (Dwc, Dfc, Dsc ...
Highest dew point temperature: A dew point of 35 °C (95 °F) — while the temperature was 42 °C (108 °F) — was observed at Dhahran, Saudi Arabia, at 3:00 p.m. on 8 July 2003. [ 202 ] Highest heat index : In the observation above at Dhahran, Saudi Arabia, the heat index ("feels like" temperature) was 81.1 °C (178.0 °F).
Temperature reconstructions based on oxygen and silicon isotopes from rock samples have predicted much hotter Precambrian sea temperatures. [ 10 ] [ 11 ] These predictions suggest ocean temperatures of 55–85 °C during the period of 2,000 to 3,500 million years ago , followed by cooling to more mild temperatures of between 10-40 °C by 1,000 ...
The ocean plays a key role in the water cycle as it is the source of 86% of global evaporation. [2] The water cycle involves the exchange of energy, which leads to temperature changes. When water evaporates, it takes up energy from its surroundings and cools the environment. When it condenses, it releases energy and warms the environment.
As the temperature continues to drop, the water on the surface may get cold enough to freeze and the lake/ocean begins to ice over. A new thermocline develops where the densest water (4 °C (39 °F)) sinks to the bottom, and the less dense water (water that is approaching the freezing point) rises to the top.
The temperature on land rose by 1.59 °C while over the ocean it rose by 0.88 °C. [3] In 2020 the temperature was 1.2 °C above the pre-industrial era. [4] In September 2023 the temperature was 1.75 °C above pre-industrial level and during the entire year of 2023 is expected to be 1.4 °C above it. [5]
Tropical reefs tend to show temperature increases of less than 1 °C. The tropical ocean surface at the Great Barrier Reef about 5350 years ago was 1 °C warmer and enriched in 18 O by 0.5 per mil relative to modern seawater. [9] Temperatures during the HCO were higher than in the present by around 6 °C in Svalbard, near the North Pole. [10]