Quantifying the Precipitation, Evapotranspiration, and Soil Moisture Network's Interaction Over Global Land Surface Hydrological Cycle
Abstract Enhancing our understanding of the intricate interplay among hydro‐climatic processes is crucial for a comprehensive assessment of water availability and climate extremes across global land regions. Here, we propose an integrated framework to investigate networks of the global fields of mul...
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| Format: | Article |
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Wiley
2024-02-01
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| Series: | Water Resources Research |
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| Online Access: | https://doi.org/10.1029/2023WR034861 |
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| author | Somnath Mondal Ashok Mishra |
| author_facet | Somnath Mondal Ashok Mishra |
| author_sort | Somnath Mondal |
| collection | DOAJ |
| description | Abstract Enhancing our understanding of the intricate interplay among hydro‐climatic processes is crucial for a comprehensive assessment of water availability and climate extremes across global land regions. Here, we propose an integrated framework to investigate networks of the global fields of multiple hydrological variables (Precipitation, Evapotranspiration, Soil Moisture). We apply a two‐layer complex network concept to formulate the independent networks of each hydrological variable and their interactions. Intra‐ (Single‐layer) and cross‐ (two‐layer) network coefficients are derived from the formulated hydrological network to quantify the linkage, spatial connection density, and scale for the independent hydrological fields (or variables) and their interactions. The joint distribution of the intra‐network coefficients reveals multiple spatial scales of connectivity for a moderately well‐connected location in case of evapotranspiration and soil moisture. With increasing global mean temperature, spatially synchronized evapotranspiration over such a large scale may lead to multi‐continental droughts and heatwaves. Furthermore, the (cross‐) network coefficients have identified regions acting as “bottlenecks” for moisture flow and the water‐dominated areas with less evaporative actions. The contrasting features of two‐layer network coefficients have provided a qualitative picture of moisture circulation and recirculation over many hydrological hotspot regions, such as the Amazonian basin, Indian subcontinents, and the Sahel region. The derived results can be employed to gain insights into the global water cycle’s multiple interacting processes (e.g., land‐atmosphere interactions). |
| format | Article |
| id | doaj-art-3f2e222bd99e432ca0e072a04bbd0fac |
| institution | Kabale University |
| issn | 0043-1397 1944-7973 |
| language | English |
| publishDate | 2024-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Water Resources Research |
| spelling | doaj-art-3f2e222bd99e432ca0e072a04bbd0fac2025-08-20T03:30:53ZengWileyWater Resources Research0043-13971944-79732024-02-01602n/an/a10.1029/2023WR034861Quantifying the Precipitation, Evapotranspiration, and Soil Moisture Network's Interaction Over Global Land Surface Hydrological CycleSomnath Mondal0Ashok Mishra1Center of Hydrological Innovations Arizona State University Tempe AZ USAZachry Department of Civil & Environmental Engineering Texas A&M University College Station TX USAAbstract Enhancing our understanding of the intricate interplay among hydro‐climatic processes is crucial for a comprehensive assessment of water availability and climate extremes across global land regions. Here, we propose an integrated framework to investigate networks of the global fields of multiple hydrological variables (Precipitation, Evapotranspiration, Soil Moisture). We apply a two‐layer complex network concept to formulate the independent networks of each hydrological variable and their interactions. Intra‐ (Single‐layer) and cross‐ (two‐layer) network coefficients are derived from the formulated hydrological network to quantify the linkage, spatial connection density, and scale for the independent hydrological fields (or variables) and their interactions. The joint distribution of the intra‐network coefficients reveals multiple spatial scales of connectivity for a moderately well‐connected location in case of evapotranspiration and soil moisture. With increasing global mean temperature, spatially synchronized evapotranspiration over such a large scale may lead to multi‐continental droughts and heatwaves. Furthermore, the (cross‐) network coefficients have identified regions acting as “bottlenecks” for moisture flow and the water‐dominated areas with less evaporative actions. The contrasting features of two‐layer network coefficients have provided a qualitative picture of moisture circulation and recirculation over many hydrological hotspot regions, such as the Amazonian basin, Indian subcontinents, and the Sahel region. The derived results can be employed to gain insights into the global water cycle’s multiple interacting processes (e.g., land‐atmosphere interactions).https://doi.org/10.1029/2023WR034861precipitationsoil moistureevapotranspirationcomplex networks |
| spellingShingle | Somnath Mondal Ashok Mishra Quantifying the Precipitation, Evapotranspiration, and Soil Moisture Network's Interaction Over Global Land Surface Hydrological Cycle Water Resources Research precipitation soil moisture evapotranspiration complex networks |
| title | Quantifying the Precipitation, Evapotranspiration, and Soil Moisture Network's Interaction Over Global Land Surface Hydrological Cycle |
| title_full | Quantifying the Precipitation, Evapotranspiration, and Soil Moisture Network's Interaction Over Global Land Surface Hydrological Cycle |
| title_fullStr | Quantifying the Precipitation, Evapotranspiration, and Soil Moisture Network's Interaction Over Global Land Surface Hydrological Cycle |
| title_full_unstemmed | Quantifying the Precipitation, Evapotranspiration, and Soil Moisture Network's Interaction Over Global Land Surface Hydrological Cycle |
| title_short | Quantifying the Precipitation, Evapotranspiration, and Soil Moisture Network's Interaction Over Global Land Surface Hydrological Cycle |
| title_sort | quantifying the precipitation evapotranspiration and soil moisture network s interaction over global land surface hydrological cycle |
| topic | precipitation soil moisture evapotranspiration complex networks |
| url | https://doi.org/10.1029/2023WR034861 |
| work_keys_str_mv | AT somnathmondal quantifyingtheprecipitationevapotranspirationandsoilmoisturenetworksinteractionovergloballandsurfacehydrologicalcycle AT ashokmishra quantifyingtheprecipitationevapotranspirationandsoilmoisturenetworksinteractionovergloballandsurfacehydrologicalcycle |