Regional meteoric water line of the Yucatan Peninsula, Mexico

Cejudo, Eduardo; Acosta‐González, Gilberto; Leal‐Bautista, Rosa María

doi:10.1002/gdj3.123

Cited by 2 publications

(4 citation statements)

References 16 publications

(13 reference statements)

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“…The latter is clearly depicted by the inverse (positive) precipitation amount relationships (Fig 4). In contrast, the northerly trade winds and easterly waves result in enriched compositions along the Gulf of Mexico and Yucatan peninsula [10,12]. The convergence of the northerly trade winds with the southerly trade winds across orographic barriers results in depleted compositions during the summer over central Mexico (Fig 3B).…”

Section: Plos Watermentioning

confidence: 97%

“…Historically, the use of water isotopes (δ 2 H, δ 18 O) in hydrogeological studies has been site-specific across Mexico, where 1-2 years or even seasonal local meteoric water lines (LMWLs) have often been used as valid input functions in central Mexico [1][2][3][4][5][6], in the northern arid landscapes [7][8][9], and in the southern coastal wet regions [10][11][12] to underpin rainfall to groundwater and surface water connectivity.…”

Section: Introductionmentioning

confidence: 99%

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Tracing isotope precipitation patterns across Mexico

Sánchez-Murillo,

González-Hita,

Mejía-González

et al. 2023

PLOS Water

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Mexico encompasses a large spectrum of landscapes with topographic, geographic, and climatic factors interacting in a complex ecohydrological setting. For decades, isotope hydrogeological tools have been applied in Mexico using short-term or seasonal local meteoric water lines as valid input functions. Yet, a systematic evaluation of meteoric isotope characteristics is still lacking. Here we report on the spatial and temporal isotope variations of 21 precipitation monitoring stations across Mexico. Our database includes 608 monthly samples collected from 2018 to 2021 over four regions (between 5 and 2,365 m asl): the Pacific coast, the Gulf of Mexico/Caribbean Sea region, and the Central and Northern plateaus. Precipitation δ18O seasonality from the dry (winter) to the wet season (summer) was characterized by a notable W-shaped variability. Monthly precipitation amounts and δ18O compositions exhibited poor to strong linear regressions (Adj. r2<0.01 to 0.75), with inverse (positive) relationships over the northern monsoon-affected region. Low d-excess (5.1 to 9.7‰) corresponded with greater terrestrial moisture contributions (20.5%) over the arid northern regions. Moisture inputs from the Gulf of Mexico/Caribbean Sea and the Pacific Ocean were associated with near-equilibrium or greater d-excess values (8.8 to 14.3‰), respectively. The best-fit linear models for δ18O (Adj. r2 = 0.85) and δ2H (Adj. r2 = 0.88) were determined for topographic and geographical predictors, resulting in an updated high-resolution precipitation isoscape (100 m2 grid) for Mexico. Orographic barriers (-2.10‰ in δ18O/km) coupled with the interaction of tropical cyclones and cold fronts, the evolution of the North American Monsoon system, and the passage of easterly trade winds play a remarkable role in controlling the spatial isotope rainfall variability. Our findings provide a robust baseline for ecohydrological, climatic, forensic, archeological, and paleoclimate studies in North America.

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Section: Plos Watermentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Tracing isotope precipitation patterns across Mexico

Sánchez-Murillo,

González-Hita,

Mejía-González

et al. 2023

PLOS Water

View full text Add to dashboard Cite

show abstract

“…4). In contrast, the northerly trade winds and easterly waves result in enriched compositions along the Gulf of Mexico and Yucatan peninsula [10,12]. The convergence of the northerly trade winds with the southerly trade winds across orographic barriers results in depleted compositions during the summer over central Mexico (Fig.…”

Section: Spatial Isotopic Variations In Precipitation Across Mexicomentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Tracing isotope precipitation patterns across Mexico

Sánchez‐Murillo¹,

González-Hita²,

Mejía-González³

et al. 2023

Preprint

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Mexico encompasses a large spectrum of landscapes with topographic, geographic, and climatic factors interacting in a complex ecohydrological setting. For decades, isotope hydrogeological tools have been applied in Mexico using short-term or seasonal local meteoric water lines as valid input functions. Yet, a systematic evaluation of meteoric isotope characteristics is still lacking. Here we report on the spatial and temporal isotope variations of 21 precipitation monitoring stations across Mexico. Our database includes 608 monthly samples collected from 2018 to 2021 over four regions (between 5 and 2,365 m asl): the Pacific coast, the Gulf of Mexico/Caribbean Sea region, and the Central and Northern Plateaus. Precipitation δ18O seasonality from the dry (winter) to the wet season (summer) was characterized by a notable W-shaped variability. Monthly precipitation amounts and δ18O compositions exhibited poor to strong linear regressions (Adj. r20.01 to 0.75), with inverse (positive) relationships over the northern monsoon-affected region. Low d-excess (5.1 to 9.7‰) corresponded with greater terrestrial moisture contributions (20.5%) over the arid northern regions. Moisture inputs from the Gulf of Mexico/Caribbean Sea and the Pacific Ocean were associated with near-equilibrium or greater d-excess values (8.8 to 14.3‰), respectively. The best-fit linear models for δ18O (Adj. r2=0.85) and δ2H (Adj. r2=0.88) were determined on topographic and geographical predictors, resulting in an updated high-resolution precipitation isoscape (100 m2 grid) for Mexico. Orographic barriers (-2.10‰ in δ18O/km) coupled with the interaction of tropical cyclones and cold fronts, the evolution of the North American Monsoon system, and the passage of easterly trade winds play a remarkable role in controlling the spatial isotope rainfall variability. Our findings provide a robust baseline for ecohydrological, climatic, forensic, archeological, and paleoclimate studies in North America.

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Regional meteoric water line of the Yucatan Peninsula, Mexico

Abstract: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 2 publications

References 16 publications

Tracing isotope precipitation patterns across Mexico

Tracing isotope precipitation patterns across Mexico

Tracing isotope precipitation patterns across Mexico

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