Global and local meteoric water lines for δ17O/δ18O and the spatiotemporal distribution of Δ′17O in Earth’s precipitation

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: Nov. 4, 2023

Recently, δ17O and its excess (Δ'17O) have become increasingly significant "triple-oxygen-isotope" indicators of distinctive hydrological processes in hydrology climatology. This situation mirrors the research regarding δ18O δ2H 1960s towards a solid theoretical base surge application examples field studies worldwide. Currently, systematic global measurements for precipitation are still lacking. As result, attempts been made to define Global δ17O/δ18O Meteoric Water Line (GMWL), often by using regional or local datasets varying systematicity. Different definitions reference slope (λref) determining Δ'17O values proposed, ongoing debate around proposed consensus value 0.528. study used worldwide samples archived IAEA Network Isotopes Precipitation (GNIP) (a) derive GMWL based on four-year monthly records from 66 GNIP stations, (b) formulate meteoric water lines (LMWL) these stations' areas, (c) evaluate seasonal variations precipitation. The was determined be δ'17O = 0.5280 ± 0.0002 δ'18O + 0.0153 0.0013, keeping with value. Furthermore, our results suggested that line-conditioned 17O-excess is viable alternative over λref context paleoclimatology interpretations; however, without challenging as such.

Language: Английский

---

Nitrate isotopes in catchment hydrology: Insights, ideas and implications for models

Journal of Hydrology, Journal Year: 2023, Volume and Issue: 626, P. 130326 - 130326

Published: Oct. 20, 2023

Language: Английский

---

Cavity Ring-Down Spectroscopy Performance and Procedures for High-Throughput δ18O and δ2H Measurement in Water Using “Express” Mode

Applied Spectroscopy, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Cavity ring-down spectroscopy (CRDS) is rapidly becoming an invaluable tool to measure hydrogen (δ²H) and oxygen (δ

Language: Английский

---

A 3.5–year rainfall isotope records from northwestern Madagascar featuring 17Oexcess and implication for paleoclimate research.

Applied Geochemistry, Journal Year: 2025, Volume and Issue: unknown, P. 106335 - 106335

Published: Feb. 1, 2025

Language: Английский

---