THE HYDROLOGICAL CYCLE

By Codesign

THE HYDROLOGICAL CYCLE

THE MOVIE

INSIDE DATA

INSIDE DATA

Water is a finite resource, in the sense that the amount of water present on our planet has always been constant throughout its history. Nevertheless it has always been moving around: changing state and distribution. This continuous closed-loop process of water moving on, above, and below the surface of the Earth is called the hydrological cycle. It is the journey
of a water drop that moves and transforms by the physical processes of precipitation, runoff and infiltration, subsurface flow, evaporation and condensation. This cycle can be dramatically altered under the pressure of given natural or anthropogenic factors, in turn affecting the availability of freshwater (both quantitatively and qualitatively).

The arrival of humans and the increasing impact of their actions on the environment have altered this cycle in direct and indirect ways. Direct impacts are caused by groundwater abstraction – causing groundwater levels to drop, saltwater intrusion along coasts to develop – , land use changes through deforestation and urbanization – leading to increased runoff, decreased evapotranspiration, reduced groundwater recharge –and man-made pollution of rivers and water bodies – leading to eutrophication and low water quality – . The most important indirect impact occurs through climate change by which an increase of the average earth surface temperature leads to a speeding up of the hydrological cycle. This leads to a wide range of effects such as higher evaporation rates combined with an increased capability of the atmosphere to hold water moisture, thereby leading to higher intensity rainfall, and an increased frequency and intensity of storms or hurricanes.

CODESIGN

THE AUTHOR

Since 1995, CODESIGN srl specializes in audiovisual communication, with particular regard for graphic and motion design.
Over its 20 years of activity, Codesign has developed a unique experience over social communication, and has developed strong collaboration ties with important Italian and international organizations such as WWF, UNICEF, UNESCO, FAO, ONU, MEDICI SENZA FRONTIERE, etc. That led to the production of medium and short format videos.
Collaboration with FAO started back in 2000 and is now as solid as ever, making Codesign a point of reference for the design of the communication language and the production of rich content across the various departments.
In 2011, Codesign wins the PRIX italy award for social communication.

RELEVANT RESOURCES

Below you may find a selection of resources related to the topics displayed and discussed in the short movie. This is a non-exhaustive list which only serves to provide with additional background material. Most of the subjects tackled have been covered by different World Water Development Reports which are listed in a separate section, followed by a number of external resources.

SCIENTIFIC PUBLICATIONS

The Water Cycle (S.J. Marshall, 2015)
GO TO THE LINK
Warming is accelerating global water cycle (ScienceNews, 2010)
GO TO THE LINK

VIDEOS

NASA – Earth’s Water Cycle
WATCH THE VIDEO

The Water Cycle (National Science Foundation)
WATCH THE VIDEO

WEBSITES/EXTERNAL LINKS

US Geological Survey (USGS): “The Water cycle”
GO TO THE LINK

A tutorial to test knowledge on hydrological cycle
GO TO THE LINK

OTHER VIDEOS

WHERE IS WATER?

By Steve Cutts

 

THE WATER NEXUS GAMES

By Bitmama

 

THE (GOOD) GOVERNANCE RECIPE

By Francesca Ferrario

 

WAR OR PEACE?

By Studio Bozzetto

 

© UNESCO 2016

WWAP Secretariat - Programme Office for Global Water Assessment
Division of Water Sciences, UNESCO - Villa La Colombella, Perugia - Italy - Tel: +39 075 59 11 01 - Email: wwap@unesco.org