A Semiempirical Method to Estimate Actual Evapotranspiration in Mediterranean Environments
Actual evapotranspiration (ETA) is a major term of site water balance whose knowledge is essential for numerous purposes. The classical ETA estimation approach based on the use of multitemporal crop coefficients (Kc) cannot be applied in water-limited environments without proper correction. Such cor...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
|
| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2018/9792609 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832547610229997568 |
|---|---|
| author | Marta Chiesi Piero Battista Luca Fibbi Lorenzo Gardin Maurizio Pieri Bernardo Rapi Maurizio Romani Fabio Maselli |
| author_facet | Marta Chiesi Piero Battista Luca Fibbi Lorenzo Gardin Maurizio Pieri Bernardo Rapi Maurizio Romani Fabio Maselli |
| author_sort | Marta Chiesi |
| collection | DOAJ |
| description | Actual evapotranspiration (ETA) is a major term of site water balance whose knowledge is essential for numerous purposes. The classical ETA estimation approach based on the use of multitemporal crop coefficients (Kc) cannot be applied in water-limited environments without proper correction. Such correction can be theoretically obtained by means of soil water content (SWC) measurements, which, however, are affected by several drawbacks, due to both their technical and operational characteristics. The current paper proposes a method to normalize annual SWC datasets and integrate them in an ETA estimation procedure suitable for monitoring both agricultural and natural Mediterranean ecosystems. Differently from previous approaches, the SWC normalization is obtained using data-specific information, which renders the new method mostly insensitive to the mentioned problems. The method is first described and then applied in three case studies representative of different Mediterranean ecosystems (i.e., grassland, coniferous, and deciduous forests). The results are evaluated versus latent heat measurements taken by eddy covariance flux towers. Satisfactory accuracy is obtained in all three case studies, with advantages and limitations which are discussed in the final concluding sections. |
| format | Article |
| id | doaj-art-ecae2ed492664fbbb615a05e0755f254 |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-ecae2ed492664fbbb615a05e0755f2542025-02-03T06:44:17ZengWileyAdvances in Meteorology1687-93091687-93172018-01-01201810.1155/2018/97926099792609A Semiempirical Method to Estimate Actual Evapotranspiration in Mediterranean EnvironmentsMarta Chiesi0Piero Battista1Luca Fibbi2Lorenzo Gardin3Maurizio Pieri4Bernardo Rapi5Maurizio Romani6Fabio Maselli7Institute of Biometeorology, CNR, Sesto Fiorentino 50019, ItalyInstitute of Biometeorology, CNR, Sesto Fiorentino 50019, ItalyInstitute of Biometeorology, CNR, Sesto Fiorentino 50019, ItalyInstitute of Biometeorology, CNR, Sesto Fiorentino 50019, ItalyInstitute of Biometeorology, CNR, Sesto Fiorentino 50019, ItalyInstitute of Biometeorology, CNR, Sesto Fiorentino 50019, ItalyInstitute of Biometeorology, CNR, Sesto Fiorentino 50019, ItalyInstitute of Biometeorology, CNR, Sesto Fiorentino 50019, ItalyActual evapotranspiration (ETA) is a major term of site water balance whose knowledge is essential for numerous purposes. The classical ETA estimation approach based on the use of multitemporal crop coefficients (Kc) cannot be applied in water-limited environments without proper correction. Such correction can be theoretically obtained by means of soil water content (SWC) measurements, which, however, are affected by several drawbacks, due to both their technical and operational characteristics. The current paper proposes a method to normalize annual SWC datasets and integrate them in an ETA estimation procedure suitable for monitoring both agricultural and natural Mediterranean ecosystems. Differently from previous approaches, the SWC normalization is obtained using data-specific information, which renders the new method mostly insensitive to the mentioned problems. The method is first described and then applied in three case studies representative of different Mediterranean ecosystems (i.e., grassland, coniferous, and deciduous forests). The results are evaluated versus latent heat measurements taken by eddy covariance flux towers. Satisfactory accuracy is obtained in all three case studies, with advantages and limitations which are discussed in the final concluding sections.http://dx.doi.org/10.1155/2018/9792609 |
| spellingShingle | Marta Chiesi Piero Battista Luca Fibbi Lorenzo Gardin Maurizio Pieri Bernardo Rapi Maurizio Romani Fabio Maselli A Semiempirical Method to Estimate Actual Evapotranspiration in Mediterranean Environments Advances in Meteorology |
| title | A Semiempirical Method to Estimate Actual Evapotranspiration in Mediterranean Environments |
| title_full | A Semiempirical Method to Estimate Actual Evapotranspiration in Mediterranean Environments |
| title_fullStr | A Semiempirical Method to Estimate Actual Evapotranspiration in Mediterranean Environments |
| title_full_unstemmed | A Semiempirical Method to Estimate Actual Evapotranspiration in Mediterranean Environments |
| title_short | A Semiempirical Method to Estimate Actual Evapotranspiration in Mediterranean Environments |
| title_sort | semiempirical method to estimate actual evapotranspiration in mediterranean environments |
| url | http://dx.doi.org/10.1155/2018/9792609 |
| work_keys_str_mv | AT martachiesi asemiempiricalmethodtoestimateactualevapotranspirationinmediterraneanenvironments AT pierobattista asemiempiricalmethodtoestimateactualevapotranspirationinmediterraneanenvironments AT lucafibbi asemiempiricalmethodtoestimateactualevapotranspirationinmediterraneanenvironments AT lorenzogardin asemiempiricalmethodtoestimateactualevapotranspirationinmediterraneanenvironments AT mauriziopieri asemiempiricalmethodtoestimateactualevapotranspirationinmediterraneanenvironments AT bernardorapi asemiempiricalmethodtoestimateactualevapotranspirationinmediterraneanenvironments AT maurizioromani asemiempiricalmethodtoestimateactualevapotranspirationinmediterraneanenvironments AT fabiomaselli asemiempiricalmethodtoestimateactualevapotranspirationinmediterraneanenvironments AT martachiesi semiempiricalmethodtoestimateactualevapotranspirationinmediterraneanenvironments AT pierobattista semiempiricalmethodtoestimateactualevapotranspirationinmediterraneanenvironments AT lucafibbi semiempiricalmethodtoestimateactualevapotranspirationinmediterraneanenvironments AT lorenzogardin semiempiricalmethodtoestimateactualevapotranspirationinmediterraneanenvironments AT mauriziopieri semiempiricalmethodtoestimateactualevapotranspirationinmediterraneanenvironments AT bernardorapi semiempiricalmethodtoestimateactualevapotranspirationinmediterraneanenvironments AT maurizioromani semiempiricalmethodtoestimateactualevapotranspirationinmediterraneanenvironments AT fabiomaselli semiempiricalmethodtoestimateactualevapotranspirationinmediterraneanenvironments |