Meteorology, oceanography, climate change
Oceanography encompasses various branches of science, including the biological, chemical, and physical processes that take place in the oceans. Stable isotope analysis provides a powerful tool in tracking these processes. The stable isotopes of oxygen and hydrogen reveal the hydrology of ocean waters and can be used to track water cycles, evaporation processes, and the influence of the atmosphere on a local, regional, and even global scale.
The nutrient cycle and ecology of the oceans are also interesting. For example, stable isotopes of sulfur, nitrogen, and carbon are powerful tools used to track the activity of algae, explain food chain structures in surface and ocean floor communities, and track nutrient fluxes in different seasons.
Climate change is one of the greatest threats to human civilization, but determining future climate scenarios is only possible if we know what has happened to the planet's climate in the past. By understanding global climate change and possible mechanisms, scientists are able to provide highly sophisticated models for predicting the planet's climate future and to alert governments and policymakers to the dangers of human activities. Stable isotope analysis acts like an ancient thermometer that allows the Earth's past temperature to be calculated from materials such as microfossils, ice cores, and rings in tree trunks.
for example:
Investigation of the relationship between rainfall and temperature by changing the ratio of stable isotopes of oxygen 18 and carbon 13 showed that:
Trees, as the oldest creatures on Earth, are sensitive to their environment and provide an almost continuous physical archive of past climate information through the physical and chemical properties of their rings, making it one of the best reserves. Natural information and the most authoritative source of research on environmental and climate change in recent times and the Holocene. Measurement of fixed isotopes in growth rings is one of the strongest chemical methods for reconstructing the process of past environmental changes. The present study was conducted to investigate the relationship between rainfall and temperature with changes in the ratio of stable isotopes of oxygen and carbon during the last 50 years. . After aging the rings of the probed tree specimens, each ring was cut and then alpha cellulose was extracted from each of the growth rings to measure the ratio of stable isotopes of carbon 13 and oxygen 18. The amount of isotopes and tree rings were measured by mass spectrometry. The results showed that the amount of cellulose in growing and juniper loops has a significant relationship with total rainfall and average temperature (monthly and seasonal). Both types of evaporative enrichment signals of leaves in both the northern and southern slopes of the Alborz mountain range cover the input signals of rainwater. The highest correlation coefficients for both Aras and Auri species are with the total rainfall in spring and April. Temperature has no effect on the amount, so it is obvious that the dominant climate control on the amount of cellulose in both types of moisture stresses (relative humidity and soil moisture) is through the effect on orifice conductivity.
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Stable isotopic analysis : In Chines: “稳定同位素分析 “ , In Russian: анализ стабильных изотопов