Surface Water Isoscape Modeling in the Himalayan Region: An Alternative for Moisture Source Investigation, Hydrograph Separation, and Paleolatitude Estimation

Dar, Tanveer; Rai, Nachiketa; Bhat, Mohd Aadil; Kumar, Sudhir; Jahan, Akhtar

doi:10.1029/2022wr033572

Cited by 4 publications

(1 citation statement)

References 97 publications

(215 reference statements)

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“…However, it is always challenging to directly measure the altitude of the Earth's surface in the past or accurately estimate it using proxies [7][8][9]. The negative correlation between stable water isotopes (δ 18 O or δD) in meteoric water and the altitudes at which precipitation occurs, also known as the altitude effect (AE) of water isotopes, provides a quantitative tool in paleo-altitude reconstructions using climate proxies [10][11][12]. The altitude effect is associated with the orographic uplifting and condensation of air masses, as well as the rainout of heavy isotopes as precipitation continues.…”

Section: Introductionmentioning

confidence: 99%

Satellite-Based Distribution of Inverse Altitude Effect of Global Water Vapor Isotopes: Potential Influences on Isotopes in Climate Proxies

Yang,

Xiao,

Wang

et al. 2023

Remote Sensing

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The widely-distributed altitude effect of stable isotopes in meteoric water, i.e., the negative correlation between stable hydrogen (or oxygen) isotope compositions and altitude, is the theoretical basis of isotope paleoaltimetry in climate proxies. However, as many recent local observations have indicated, the inverse altitude effect (IAE) in meteoric water does exist, and the regime controlling IAE is still unclear on a global scale. Based on a remote sensing product of the Infrared Atmospheric Sounding Interferometer (IASI), we examined the global frequency of IAE in water vapor isotopes, and the possible influences on isotopes in precipitation and climate proxies. According to the satellite-based δD values in water vapor at 2950 m and 4220 m above sea level, frequent IAEs are observed on a daily scale in North Africa, West and Central Asia, and North America, and IAEs are more likely to occur during the daytime than during the nighttime. We also converted water vapor δD to precipitation δD via equilibrium fractionation and then analyzed the potential presence of IAE in precipitation, which is more associated with climate proxies, and found that the spatial and temporal patterns of water vapor can be transferred to the precipitation. In addition, different thresholds of δD difference were also tested to understand the impact of random errors. The potential uncertainty of the changing isotope and altitude gradient should be considered in paleo-altitude reconstructions.

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Section: Introductionmentioning

confidence: 99%

Satellite-Based Distribution of Inverse Altitude Effect of Global Water Vapor Isotopes: Potential Influences on Isotopes in Climate Proxies

Yang,

Xiao,

Wang

et al. 2023

Remote Sensing

View full text Add to dashboard Cite

show abstract

Geochemistry of dissolved loads and chemical weathering in the Upper Jhelum River Basin (UJRB) of western Himalayas: Isotopic and chemical constraints

Dar

Rai

Kumar

et al. 2023

Applied Geochemistry

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Investigating hydrological dynamics and mean residence times of springs in the Tawi catchment, India: Insights into recharge mechanisms and water source variability

Dar,

Rawat

2024

Groundwater for Sustainable Development

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Surface Water Isoscape Modeling in the Himalayan Region: An Alternative for Moisture Source Investigation, Hydrograph Separation, and Paleolatitude Estimation

Abstract: The stable isotopes ( 18 O/ 16 O and 2 H/ 1 H) have been used to trace the fate and origin of atmospheric moisture sources (

Cited by 4 publications

References 97 publications

Satellite-Based Distribution of Inverse Altitude Effect of Global Water Vapor Isotopes: Potential Influences on Isotopes in Climate Proxies

Satellite-Based Distribution of Inverse Altitude Effect of Global Water Vapor Isotopes: Potential Influences on Isotopes in Climate Proxies

Geochemistry of dissolved loads and chemical weathering in the Upper Jhelum River Basin (UJRB) of western Himalayas: Isotopic and chemical constraints

Investigating hydrological dynamics and mean residence times of springs in the Tawi catchment, India: Insights into recharge mechanisms and water source variability

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