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Not quite. Oftentimes we use proxies for historical data. For instance, you might look at the composition of annually stratified sediments to get a sense of cli
by scarmig 6y ago
Not quite. Oftentimes we use proxies for historical data. For instance, you might look at the composition of annually stratified sediments to get a sense of climactic and environmental conditions. This gets us approximate but reasonable estimates of e.g. the temperature, but can't really be said to represent a "record."
Even for cherry blossoms, they put off pollen, so you could probably do something similar. It'd be tricky to get a fine enough resolution (I'd be impressed if you could even get estimates as specific as month-level). Though the millenium of data would be awesome for verifying the proxy.
- matkoniecz 6y agoIce cores are pretty amazing. > Cores are drilled with hand augers (for shallow holes) or powered drills; they can reach depths of over 3.2 km, and contain ice up to 800,000 years old. > The physical properties of the ice and of material trapped in it can be used to reconstruct the climate over the age range of the core. The proportions of different oxygen and hydrogen isotopes provide information about ancient temperatures, and the air trapped in tiny bubbles can be analysed to determine the level of atmospheric gases such as carbon dioxide. https://en.wikipedia.org/wiki/Ice_core https://en.wikipedia.org/wiki/Ice_core (edited for SI units preference)