Hydrological cycle

"The water cycle — technically known as the hydrological cycle — is the continuous circulation of water within the Earth's hydrosphere, and is driven by solar radiation. This includes the atmosphere, land, surface water and groundwater. As water moves through the cycle, it changes state between liquid, solid, and gas phases. Water moves from compartment to compartment, such as from river to ocean, by the physical processes of evaporation, precipitation, infiltration, runoff, and subsurface flow." (European Environmental Agency, 2019). "Water moves at very small scales too. It is in us, plants, and other organisms. Human activities impact the water cycle, affecting where water is stored, how it moves, and how clean it is." (USGS, 2022).

By clicking any of the pools and fluxes below, you will get redirected to the Space4Water glossary term, learn about terminology and see what Space4Water actors including stakeholders, professionals and young professionals have on the Portal and what content is available.

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Sources

European Environmental Agency. "Water glossary". Accessed March 2, 2019. Available at: https://www.eea.europa.eu/themes/water/glossary

United States Geological Survey. "Water Cycle". Accessed November 7, 2022. https://www.usgs.gov/special-topics/water-science-school/science/water-…

Related Content

Article

Interview with Ioana Popescu, Associate Professor of Hydroinformatics at IHE Delft Institute for Water Education

Please describe how your professional (and/or personal) experience relates to space technologies and their applications to water resources management.

I am an expert in hydroinformatics, mainly involved in research projects and research supervision of MSc and PhD students. My research focusses on physically based models for inland waters (rivers and lakes). One of the major fields where modelling is used in water resources is flooding. In order to have adequate representation of floods, most models require large amounts of data, both for model building and model usage.

卫星遥感技术在气溶胶监测以及水文循环研究的应用

Translated by Dr. Mengyi Jin

短时强降雨或长期干旱等极端天气事件往往会对地区经济、生态系统以及城市社区的正常运行造成负面影响。这些极端天气事件和大气中气溶胶的存在密切相关。气溶胶是悬浮于空气中的微小颗粒,它能够改变云的性质和降水过程,从而影响整个水文循环。因此,深入理解气溶胶、云以及水文循环之间的相互作用,对于应对气候变化具有重要意义。

近年来,随着太空技术的不断发展,尤其是卫星遥感技术的突破,气溶胶研究取得了重大进展。例如激光雷达(LiDAR)和多角度成像光谱辐射计等卫星遥感技术的广泛应用,使科学家们能够获取大气中气溶胶分布及其动态变化的高精度监测数据。这些数据有助于科学家们深入探讨气溶胶、降水以及水资源分布之间的关联(Winker等, 2009)。通过大量实时监测数据,卫星遥感技术不仅提升了对水文循环的预测能力,也为提出应对水资源危机的政策建议提供了有力支持。

卫星遥感技术在气溶胶监测以及水文循环研究的应用

Translated by Dr. Mengyi Jin

短时强降雨或长期干旱等极端天气事件往往会对地区经济、生态系统以及城市社区的正常运行造成负面影响。这些极端天气事件和大气中气溶胶的存在密切相关。气溶胶是悬浮于空气中的微小颗粒,它能够改变云的性质和降水过程,从而影响整个水文循环。因此,深入理解气溶胶、云以及水文循环之间的相互作用,对于应对气候变化具有重要意义。

近年来,随着太空技术的不断发展,尤其是卫星遥感技术的突破,气溶胶研究取得了重大进展。例如激光雷达(LiDAR)和多角度成像光谱辐射计等卫星遥感技术的广泛应用,使科学家们能够获取大气中气溶胶分布及其动态变化的高精度监测数据。这些数据有助于科学家们深入探讨气溶胶、降水以及水资源分布之间的关联(Winker等, 2009)。通过大量实时监测数据,卫星遥感技术不仅提升了对水文循环的预测能力,也为提出应对水资源危机的政策建议提供了有力支持。

Space-based technology for aerosol monitoring and its role in the hydrological cycle

Extreme weather events, such as sudden downpours or prolonged droughts, disrupt economies, ecosystems, and communities. These events are closely linked to aerosols—tiny atmospheric particles that influence the hydrological cycle by altering cloud properties and precipitation. Understanding the interactions between aerosols, clouds, and the hydrological cycle is essential for managing climate variability.

Space-based technology for aerosol monitoring and its role in the hydrological cycle

Extreme weather events, such as sudden downpours or prolonged droughts, disrupt economies, ecosystems, and communities. These events are closely linked to aerosols—tiny atmospheric particles that influence the hydrological cycle by altering cloud properties and precipitation. Understanding the interactions between aerosols, clouds, and the hydrological cycle is essential for managing climate variability.

卫星遥感技术在气溶胶监测以及水文循环研究的应用

Translated by Dr. Mengyi Jin

短时强降雨或长期干旱等极端天气事件往往会对地区经济、生态系统以及城市社区的正常运行造成负面影响。这些极端天气事件和大气中气溶胶的存在密切相关。气溶胶是悬浮于空气中的微小颗粒,它能够改变云的性质和降水过程,从而影响整个水文循环。因此,深入理解气溶胶、云以及水文循环之间的相互作用,对于应对气候变化具有重要意义。

近年来,随着太空技术的不断发展,尤其是卫星遥感技术的突破,气溶胶研究取得了重大进展。例如激光雷达(LiDAR)和多角度成像光谱辐射计等卫星遥感技术的广泛应用,使科学家们能够获取大气中气溶胶分布及其动态变化的高精度监测数据。这些数据有助于科学家们深入探讨气溶胶、降水以及水资源分布之间的关联(Winker等, 2009)。通过大量实时监测数据,卫星遥感技术不仅提升了对水文循环的预测能力,也为提出应对水资源危机的政策建议提供了有力支持。

Space-based technology for aerosol monitoring and its role in the hydrological cycle

Extreme weather events, such as sudden downpours or prolonged droughts, disrupt economies, ecosystems, and communities. These events are closely linked to aerosols—tiny atmospheric particles that influence the hydrological cycle by altering cloud properties and precipitation. Understanding the interactions between aerosols, clouds, and the hydrological cycle is essential for managing climate variability.

Interview with Ioana Popescu, Associate Professor of Hydroinformatics at IHE Delft Institute for Water Education

Please describe how your professional (and/or personal) experience relates to space technologies and their applications to water resources management.

I am an expert in hydroinformatics, mainly involved in research projects and research supervision of MSc and PhD students. My research focusses on physically based models for inland waters (rivers and lakes). One of the major fields where modelling is used in water resources is flooding. In order to have adequate representation of floods, most models require large amounts of data, both for model building and model usage.

Event

Stakeholder

IHE Delft Institute for Water Education

IHE Delft Institute for Water Education is the largest international graduate water education facility in the world and is based in Delft, the Netherlands. Since 1957 the Institute has provided water education and training to 23.000 professionals from over 190 countries, the vast majority from Africa, Asia and Latin America. Also, numerous research and institutional strengthening projects are carried out in partnership to strengthen capacity in the water sector worldwide.

Mozaika

Mozaika, The Humanizing Technologies Lab, provides research and development in the field of data science, natural interfaces (human-computer interaction), knowledge management and human insight. At Mozaika we are trying to leverage data science with natural interfaces to provide solutions tailored to human behavior, attitudes and comprehension. The company specializes in building information infrastructures that serve a variety of applications in data as a service or intelligence as a service modes. Our solutions are either human user facing or modules of larger systems.

b.geos GmbH

b.geos offers Earth Observation services using state-of-the-art remote sensing technologies. We develop value-added products, conduct basic research, provide consultancy in remote sensing technologies and applications, as well as training.

Govind Ballabh Pant University of Agriculture and Technology Pantnagar

G. B. Pant University of Agriculture and Technology, also known as Pantnagar University, is the first agricultural university in India. The University lies in the campus town of Pantnagar in Kichha Tehseel and in the district of Udham Singh Nagar, Uttarakhand. The university is regarded as the harbinger of the Green Revolution in India. Pantnagar University is regarded as a significant force in the development and transfer of High Yielding Variety of seeds and related technology.

Person

Space-based Solution

Flood modeling for melting glacier - discontinued

Assessment of the challenge

  • Need more data about the location of the community and their usage of water
  • Split the challenge into a “glacier” and a down-stream challenge
  • No up-to-date weather data available since 2011
  • Discharge and temperature, rainfall and snow data available
  • Digital elevation surface and terrain model available

Outline steps to a solution & status

  1. Inventory of the snow cover and watershed area (completed)
  2. Build a regression model using historical data to assess the relationship