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Tahiti is the highest and largest island in French Polynesia lying close to Moʻorea island. It is located 4,400 kilometres (2,376 nautical miles) south of Hawaiʻi, 7,900 km (4,266 nmi) from Chile, 5,700 km (3,078 nmi) from Australia.
500 million years of climate change Ice core data for the past 400,000 years, with the present at right. Note length of glacial cycles averages ~100,000 years. Blue curve is temperature, green curve is CO 2, and red curve is windblown glacial dust (loess). Scale: Millions of years before present, earlier dates approximate.
Tetiʻaroa is administratively part of the commune of Arue, whose main part is in the northeastern part of Tahiti. The atoll is located 53 kilometres (33 mi) north of Tahiti. The atoll has a total surface area of 6 square kilometres (2 sq mi); approximately 585 hectares (1,450 acres) of sand divided by 12 motus (islets) with varying surface areas.
The temperatures are highest on average in March, at around 26.2 °C (79.2 °F), and lowest in September, at around 25.0 °C (77.0 °F). The highest temperature ever recorded in Hakahau was 32.1 °C (89.8 °F) on 13 April 2007; the coldest temperature ever recorded was 16.2 °C (61.2 °F) on 28 August 1997.
The climate of the islands varies between tropical and subtropical due to their size. The heat and very high humidity, together with the islands' fertile volcanic soils, have created dense, mostly inaccessible tropical forests. There are two seasons: a warm one, which lasts from November to March, and a cooler one, from April to October.
The initial version of Global Historical Climatology Network was developed in the summer of 1992. [3] This first version, known as Version 1 was a collaboration between research stations and data sets alike to the World Weather Records program and the World Monthly Surface Station Climatology from the National Center for Atmospheric Research. [4]
Reconstruction of the past 5 million years of climate history, based on oxygen isotope fractionation in deep sea sediment cores (serving as a proxy for the total global mass of glacial ice sheets), fitted to a model of orbital forcing (Lisiecki and Raymo 2005) [2] and to the temperature scale derived from Vostok ice cores following Petit et al. (1999).
The current multi-century period is the warmest in the past 100,000 years. [3] The temperature in the years 2011-2020 was 1.09 °C higher than in 1859–1890. 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]