Zhuotong Nan
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View article: A Hybrid Modeling Approach for Improved Simulation of Thermal‐Hydrological Dynamics in Active Layer on the Qinghai‐Tibet Plateau
A Hybrid Modeling Approach for Improved Simulation of Thermal‐Hydrological Dynamics in Active Layer on the Qinghai‐Tibet Plateau Open
Accurately modeling active layer dynamics on the warming and wetting Qinghai‐Tibet Plateau (QTP) is crucial for understanding local hydrological processes, ecosystem dynamics, and infrastructure integrity. However, land surface models (LSM…
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Reply on RC1 Open
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Reply on RC2 Open
View article: RTSEvo v1.0: A Retrogressive Thaw Slump Evolution Model
RTSEvo v1.0: A Retrogressive Thaw Slump Evolution Model Open
Widespread thermal degradation in permafrost regions is accelerating the development of retrogressive thaw slumps (RTS), which threaten ecological stability and infrastructure. Existing RTS modeling studies, however, are largely confined t…
View article: NoahPy: A differentiable Noah land surface model for simulating permafrost thermo-hydrology
NoahPy: A differentiable Noah land surface model for simulating permafrost thermo-hydrology Open
Accurately representing permafrost in Earth System Models is a grand challenge that creates major uncertainty. A promising path forward is to create hybrid models that synergize process-based physics with deep learning, but this is fundame…
View article: Effect of permafrost degradation on grassland net primary productivity in Qinghai–Tibet Plateau
Effect of permafrost degradation on grassland net primary productivity in Qinghai–Tibet Plateau Open
Climate warming poses complex challenges for alpine ecosystems on the Qinghai–Tibetan Plateau (QTP), further exacerbated by permafrost degradation. Quantifying the specific ecological impacts of permafrost thaw remains elusive, as ecologic…
View article: Bare Patches Created by Plateau Pikas Contribute to Warming Permafrost on the Tibet Plateau
Bare Patches Created by Plateau Pikas Contribute to Warming Permafrost on the Tibet Plateau Open
Plateau pikas, small mammals native to the Qinghai‐Tibet Plateau (QTP), create bare patches through burrowing. No previous assessment exists on their impact on permafrost. This study fills this gap by simulating hypothetical scenarios in t…
View article: A new 2010 permafrost distribution map over the Qinghai–Tibet Plateau based on subregion survey maps: a benchmark for regional permafrost modeling
A new 2010 permafrost distribution map over the Qinghai–Tibet Plateau based on subregion survey maps: a benchmark for regional permafrost modeling Open
Permafrost over the Qinghai–Tibet Plateau (QTP) has received increasing attention due to its high sensitivity to climate change. Numerous spatial modeling studies have been conducted on the QTP to assess the status of permafrost, project f…
View article: Elevation dependency of future degradation of permafrost over the Qinghai-Tibet Plateau
Elevation dependency of future degradation of permafrost over the Qinghai-Tibet Plateau Open
Global warming has caused widespread permafrost degradation, but the geographic regularity of permafrost degradation is unknown. Here, we investigated the three-dimensional features of future permafrost degradation on the Qinghai-Tibetan P…
View article: Projecting China’s future water footprints and water scarcity under socioeconomic and climate change pathways using an integrated simulation approach
Projecting China’s future water footprints and water scarcity under socioeconomic and climate change pathways using an integrated simulation approach Open
Future changes in climate and socioeconomic systems will exacerbate water scarcity. Previous studies on China’s water footprint and scarcity often consider only climate change or socioeconomic factors in isolation. Here, we address these i…
View article: Modelling Permafrost Characteristics and Its Relationship with Environmental Constraints in the Gaize Area, Qinghai-Tibet Plateau, China
Modelling Permafrost Characteristics and Its Relationship with Environmental Constraints in the Gaize Area, Qinghai-Tibet Plateau, China Open
The impact of environmental constraints on permafrost distribution and characteristics of the remote western Qinghai-Tibetan Plateau (QTP) were seldom reported. Using augmented Noah land surface model, this study aims to elaborate the perm…
View article: A new 2010 permafrost distribution map over the Qinghai-Tibet Plateau based on subregion survey maps: a benchmark for regional permafrost modeling
A new 2010 permafrost distribution map over the Qinghai-Tibet Plateau based on subregion survey maps: a benchmark for regional permafrost modeling Open
Permafrost over the Qinghai-Tibet Plateau (QTP) has gained increasing attention due to its high sensitivity to climate change. Numerous spatial modeling studies have been conducted on the QTP to assess the status of permafrost, project fut…
View article: Qinghai‐Tibet Plateau Permafrost at Risk in the Late 21st Century
Qinghai‐Tibet Plateau Permafrost at Risk in the Late 21st Century Open
Global warming has led to permafrost degradation worldwide. The Qinghai‐Tibet Plateau (QTP) hosts most of the world's alpine permafrost, yet its impending changes remain largely unclear, thereby affecting regional hydrological and ecologic…
View article: Convective heat transfer of spring meltwater accelerates active layer phase change in Tibet permafrost areas
Convective heat transfer of spring meltwater accelerates active layer phase change in Tibet permafrost areas Open
Convective heat transfer (CHT) is one of the important processes that control the near-ground surface heat transfer in permafrost areas. However, this process has often not been considered in most permafrost studies, and its influence on f…
View article: On the Spin‐Up Strategy for Spatial Modeling of Permafrost Dynamics: A Case Study on the Qinghai‐Tibet Plateau
On the Spin‐Up Strategy for Spatial Modeling of Permafrost Dynamics: A Case Study on the Qinghai‐Tibet Plateau Open
Spin‐up is essential to provide initial conditions for land surface models (LSM) when they cannot be given reliably as in the application to regional permafrost change studies. In this study, the impacts of spin‐up strategy including total…
View article: Spatiotemporal Characteristics of NPP Changes in Frozen Ground Areas of the Three-River Headwaters Region, China: A Regional Modeling Perspective
Spatiotemporal Characteristics of NPP Changes in Frozen Ground Areas of the Three-River Headwaters Region, China: A Regional Modeling Perspective Open
Permafrost degradation triggered by climate warming can disturb alpine ecosystem stability and further influence net primary productivity (NPP). Known as the “water tower of China”, the Three-River Headwaters Region (TRHR) on the eastern Q…
View article: A new 2010 permafrost distribution map over the Qinghai-Tibet Plateau based on subregion survey maps: a benchmark for regional permafrost modelling
A new 2010 permafrost distribution map over the Qinghai-Tibet Plateau based on subregion survey maps: a benchmark for regional permafrost modelling Open
This dataset contains a new 2010 permafrost distribution map over the Qinghai-Tibet Plateau and the data used in the mapping. All data are provided as GeoTIFF(.tif) files. 1. "permafrost_distribution_map_2010_QTP.tif" is the permafrost d…
View article: A new 2010 permafrost distribution map over the Qinghai-Tibet Plateau based on subregion survey maps: a benchmark for regional permafrost modelling
A new 2010 permafrost distribution map over the Qinghai-Tibet Plateau based on subregion survey maps: a benchmark for regional permafrost modelling Open
This dataset contains a new 2010 permafrost distribution map over the Qinghai-Tibet Plateau and the relevant data used in the mapping. All data are provided as GeoTIFF(.tif) files. 1. "permafrost_distribution_map_2010_QTP.tif" is the per…
View article: Evaluating the Applicability of a Quantile–Quantile Adjustment Approach for Downscaling Monthly GCM Projections to Site Scale over the Qinghai-Tibet Plateau
Evaluating the Applicability of a Quantile–Quantile Adjustment Approach for Downscaling Monthly GCM Projections to Site Scale over the Qinghai-Tibet Plateau Open
In the context of global climate change, the Qinghai-Tibetan plateau (QTP) has experienced unprecedented changes in its local climate. While general circulation models (GCM) are able to forecast global-scale future climate change trends, f…
View article: Convective Heat Transfer of Spring Meltwater Accelerates Active Layer Phase Change in Tibetan Permafrost Areas
Convective Heat Transfer of Spring Meltwater Accelerates Active Layer Phase Change in Tibetan Permafrost Areas Open
Convective heat transfer (CHT) is one of the important processes that controls the near ground surface heat transfer in permafrost areas. However, this process has often not been considered in most permafrost simulation studies and its inf…
View article: Qinghai-Tibet Plateau wetting reduces permafrost thermal responses to climate warming
Qinghai-Tibet Plateau wetting reduces permafrost thermal responses to climate warming Open
Permafrost, as one of the cryospheric indicators, is extremely sensitive to climatic changes. The Qinghai-Tibet Plateau has experienced remarkable warming and wetting since the mid-1990s. Its recent wetting alters thermal and hydrological …
View article: A Semi-Physical Approach for Downscaling Satellite Soil Moisture Data in a Typical Cold Alpine Area, Northwest China
A Semi-Physical Approach for Downscaling Satellite Soil Moisture Data in a Typical Cold Alpine Area, Northwest China Open
Microwave remote sensing techniques provide a direct measurement of surface soil moisture (SM), with advantages for all-weather observations and solid physics. However, most satellite microwave soil moisture products fail to meet the requi…
View article: A Bayesian Approach for Interpolating Clear-Sky MODIS Land Surface Temperatures on Areas With Extensive Missing Data
A Bayesian Approach for Interpolating Clear-Sky MODIS Land Surface Temperatures on Areas With Extensive Missing Data Open
The MODIS land surface temperature (LST) products contain large areas of missing data due to cloud contamination. Interpolating clear-sky equivalent LSTs on those areas is a first step in a stepwise approach toward fully recovering missing…
View article: An effective approach for mapping permafrost in a large area using subregion maps and satellite data
An effective approach for mapping permafrost in a large area using subregion maps and satellite data Open
Permafrost distribution maps are of importance for environmental assessment, climate system modeling, and practical engineering applications. The scarcity of forcing data and parameters often limits the uses of permafrost models over large…
View article: Evaluation and integration of the top-down and bottom-up satellite precipitation products over mainland China
Evaluation and integration of the top-down and bottom-up satellite precipitation products over mainland China Open
The satellite precipitation products (SPPs) obtained from the satellite soil moisture data through a bottom-up approach (i.e., the SM2RAIN algorithm) have been developed and released in recent years. However, the assessments and the integr…
View article: The Role of Winter Warming in Permafrost Change Over the Qinghai‐Tibet Plateau
The Role of Winter Warming in Permafrost Change Over the Qinghai‐Tibet Plateau Open
Winter warming is fast than summer warming on the Qinghai‐Tibet Plateau (QTP). However, no assessment of winter warming effects on permafrost has been attempted. Here we conducted hypothetical control experiments and used the Noah land sur…
View article: Energy balance model of mass balance and its sensitivity to meteorological variability on Urumqi River Glacier No.1 in the Chinese Tien Shan
Energy balance model of mass balance and its sensitivity to meteorological variability on Urumqi River Glacier No.1 in the Chinese Tien Shan Open
Energy exchanges between atmosphere and glacier surface control the net energy available for snow and ice melt. Based on the meteorological records in Urumqi River Glacier No.1 (URGN1) in the Chinese Tien Shan during the period of 2012–201…
View article: Calibrating a Hydrological Model by Stratifying Frozen Ground Types and Seasons in a Cold Alpine Basin
Calibrating a Hydrological Model by Stratifying Frozen Ground Types and Seasons in a Cold Alpine Basin Open
Frozen ground and precipitation seasonality may strongly affect hydrological processes in a cold alpine basin, but the calibration of a hydrological model rarely considers their impacts on model parameters, likely leading to considerable s…
View article: Hydrological Variability in the Arid Region of Northwest China from 2002 to 2013
Hydrological Variability in the Arid Region of Northwest China from 2002 to 2013 Open
The arid region of Northwest China (ANC) has a distinct and fragile inland water cycle. This study examined the hydrological variations in ANC and its three subregions from August 2002 to December 2013 by integrating terrestrial water stor…
View article: Vegetation Changes in the Permafrost Regions of the Qinghai-Tibetan Plateau from 1982-2012: Different Responses Related to Geographical Locations and Vegetation Types in High-Altitude Areas
Vegetation Changes in the Permafrost Regions of the Qinghai-Tibetan Plateau from 1982-2012: Different Responses Related to Geographical Locations and Vegetation Types in High-Altitude Areas Open
The Qinghai-Tibetan Plateau (QTP) contains the largest permafrost area in a high-altitude region in the world, and the unique hydrothermal environments of the active layers in this region have an important impact on vegetation growth. Geog…