The role of aerodynamic resistance in thermal remote sensing-based evapotranspiration models

Aerodynamic resistance (hereafter ra) is a preeminent variable in evapotranspiration (ET) modelling. The accurate quantification of ra plays a pivotal role in determining the performance and consistency of thermal remote sensing-based surface energy balance (SEB) models for estimating ET at local to...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Remote sensing of environment 2021-10, Vol.264, p.112602, Article 112602
Hauptverfasser: Trebs, Ivonne, Mallick, Kaniska, Bhattarai, Nishan, Sulis, Mauro, Cleverly, Jamie, Woodgate, William, Silberstein, Richard, Hinko-Najera, Nina, Beringer, Jason, Meyer, Wayne S., Su, Zhongbo, Boulet, Gilles
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page
container_issue
container_start_page 112602
container_title Remote sensing of environment
container_volume 264
creator Trebs, Ivonne
Mallick, Kaniska
Bhattarai, Nishan
Sulis, Mauro
Cleverly, Jamie
Woodgate, William
Silberstein, Richard
Hinko-Najera, Nina
Beringer, Jason
Meyer, Wayne S.
Su, Zhongbo
Boulet, Gilles
description Aerodynamic resistance (hereafter ra) is a preeminent variable in evapotranspiration (ET) modelling. The accurate quantification of ra plays a pivotal role in determining the performance and consistency of thermal remote sensing-based surface energy balance (SEB) models for estimating ET at local to regional scales. Atmospheric stability links ra with land surface temperature (LST) and the representation of their interactions in the SEB models determines the accuracy of ET estimates. The present study investigates the influence of ra and its relation to LST uncertainties on the performance of three structurally different SEB models. It used data from nine Australian OzFlux eddy covariance sites of contrasting aridity in conjunction with MODIS Terra and Aqua LST and leaf area index (LAI) products. Simulations of the sensible heat flux (H) and the latent heat flux (LE, the energy equivalent of ET in W/m2) from the SPARSE (Soil Plant Atmosphere and Remote Sensing Evapotranspiration), SEBS (Surface Energy Balance System) and STIC (Surface Temperature Initiated Closure) models forced with MODIS LST, LAI, and in-situ meteorological datasets were evaluated against flux observations in water-limited (arid and semi-arid) and energy-limited (mesic) ecosystems from 2011 to 2019. Our results revealed an overestimation tendency of instantaneous LE by all three models in the water-limited shrubland, woodland and grassland ecosystems by up to 50% on average, which was caused by an underestimation of H. Overestimation of LE was associated with discrepancies in ra retrievals under conditions of high atmospheric instability, during which uncertainties in LST (expressed as the difference between MODIS LST and in-situ LST) apparently played a minor role. On the other hand, a positive difference in LST coincided with low ra (high wind speeds) and caused a slight underestimation of LE at the water-limited sites. The impact of ra on the LE residual error was found to be of the same magnitude as the influence of LST uncertainties in the semi-arid ecosystems as indicated by variable importance in projection (VIP) coefficients from partial least squares regression above unity. In contrast, our results for the mesic forest ecosystems indicated minor dependency on ra for modelling LE (VIP 
doi_str_mv 10.1016/j.rse.2021.112602
format Article
fullrecord <record><control><sourceid>proquest_hal_p</sourceid><recordid>TN_cdi_hal_primary_oai_HAL_hal_04615813v1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0034425721003229</els_id><sourcerecordid>2580074337</sourcerecordid><originalsourceid>FETCH-LOGICAL-c450t-3f22d3e2a71aab0f0ea130532b476c33c65dc13a6291418f4d7b8b809bb14733</originalsourceid><addsrcrecordid>eNp9kEFr3DAQhUVoIdu0PyA3QU49eDsjyZaXnkJom8JCL3ssiLE87mqxra3kLOTfV4tLjz0NPN57zPuEuEfYImDz6bRNmbcKFG4RVQPqRmywtbsKLJg3YgOgTWVUbW_Fu5xPAFi3Fjfi5-HIMsWRZRwkcYr960xT8DJxDnmh2bMMs1yOnCYaizrFhWXmOYf5V9VR5l7yhc5xSTTnc0i0hDjLKfY85vfi7UBj5g9_7504fP1yeHqu9j--fX963Ffe1LBUelCq16zIIlEHAzChhlqrztjGa-2buveoqVE7NNgOprdd27Ww6zo0Vus78XGtPdLozilMlF5dpOCeH_fuqoFpylzUFyzeh9V7TvH3C-fFneJLmst3TtUtgDVa2-LC1eVTzDnx8K8WwV15u5MrvN2Vt1t5l8znNVOG8yVwctkHLvz6kNgvro_hP-k_EHCHxw</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2580074337</pqid></control><display><type>article</type><title>The role of aerodynamic resistance in thermal remote sensing-based evapotranspiration models</title><source>Access via ScienceDirect (Elsevier)</source><creator>Trebs, Ivonne ; Mallick, Kaniska ; Bhattarai, Nishan ; Sulis, Mauro ; Cleverly, Jamie ; Woodgate, William ; Silberstein, Richard ; Hinko-Najera, Nina ; Beringer, Jason ; Meyer, Wayne S. ; Su, Zhongbo ; Boulet, Gilles</creator><creatorcontrib>Trebs, Ivonne ; Mallick, Kaniska ; Bhattarai, Nishan ; Sulis, Mauro ; Cleverly, Jamie ; Woodgate, William ; Silberstein, Richard ; Hinko-Najera, Nina ; Beringer, Jason ; Meyer, Wayne S. ; Su, Zhongbo ; Boulet, Gilles</creatorcontrib><description>Aerodynamic resistance (hereafter ra) is a preeminent variable in evapotranspiration (ET) modelling. The accurate quantification of ra plays a pivotal role in determining the performance and consistency of thermal remote sensing-based surface energy balance (SEB) models for estimating ET at local to regional scales. Atmospheric stability links ra with land surface temperature (LST) and the representation of their interactions in the SEB models determines the accuracy of ET estimates. The present study investigates the influence of ra and its relation to LST uncertainties on the performance of three structurally different SEB models. It used data from nine Australian OzFlux eddy covariance sites of contrasting aridity in conjunction with MODIS Terra and Aqua LST and leaf area index (LAI) products. Simulations of the sensible heat flux (H) and the latent heat flux (LE, the energy equivalent of ET in W/m2) from the SPARSE (Soil Plant Atmosphere and Remote Sensing Evapotranspiration), SEBS (Surface Energy Balance System) and STIC (Surface Temperature Initiated Closure) models forced with MODIS LST, LAI, and in-situ meteorological datasets were evaluated against flux observations in water-limited (arid and semi-arid) and energy-limited (mesic) ecosystems from 2011 to 2019. Our results revealed an overestimation tendency of instantaneous LE by all three models in the water-limited shrubland, woodland and grassland ecosystems by up to 50% on average, which was caused by an underestimation of H. Overestimation of LE was associated with discrepancies in ra retrievals under conditions of high atmospheric instability, during which uncertainties in LST (expressed as the difference between MODIS LST and in-situ LST) apparently played a minor role. On the other hand, a positive difference in LST coincided with low ra (high wind speeds) and caused a slight underestimation of LE at the water-limited sites. The impact of ra on the LE residual error was found to be of the same magnitude as the influence of LST uncertainties in the semi-arid ecosystems as indicated by variable importance in projection (VIP) coefficients from partial least squares regression above unity. In contrast, our results for the mesic forest ecosystems indicated minor dependency on ra for modelling LE (VIP &lt; 0.4), which was due to a higher roughness length and lower LST resulting in the dominance of mechanically generated turbulence, thereby diminishing the importance of buoyancy production for the determination of ra. •Modelled latent heat flux is uncertain under drought due to aerodynamic resistance.•Overestimation of aerodynamic resistance at water-limited sites for low wind speed.•Stability links aerodynamic resistance with surface temperature and sensible heat.•Novel formulations for aerodynamic resistance are needed to model latent heat flux.</description><identifier>ISSN: 0034-4257</identifier><identifier>EISSN: 1879-0704</identifier><identifier>DOI: 10.1016/j.rse.2021.112602</identifier><language>eng</language><publisher>New York: Elsevier Inc</publisher><subject>Aerodynamic resistance ; Aerodynamics ; Aridity ; Atmospheric models ; Atmospheric stability ; Ecosystems ; Eddy covariance ; Energy balance ; Energy limitation ; Enthalpy ; Environmental Sciences ; Evapotranspiration ; Evapotranspiration estimates ; Evapotranspiration models ; Fluctuations ; Forest ecosystems ; Grasslands ; Heat flux ; Heat transfer ; Land surface temperature ; Latent heat ; Latent heat flux ; Leaf area ; Leaf area index ; Least squares method ; Modelling ; MODIS ; Remote sensing ; Roughness length ; Sensible heat ; Sensible heat flux ; Surface energy ; Surface energy balance ; Surface energy balance model ; Surface properties ; Surface stability ; Surface temperature ; Terrestrial ecosystems ; Thermal remote sensing ; Thermal resistance ; Uncertainty ; Wind speed ; Woodlands</subject><ispartof>Remote sensing of environment, 2021-10, Vol.264, p.112602, Article 112602</ispartof><rights>2021 The Authors</rights><rights>Copyright Elsevier BV Oct 2021</rights><rights>Attribution - NonCommercial - NoDerivatives</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c450t-3f22d3e2a71aab0f0ea130532b476c33c65dc13a6291418f4d7b8b809bb14733</citedby><cites>FETCH-LOGICAL-c450t-3f22d3e2a71aab0f0ea130532b476c33c65dc13a6291418f4d7b8b809bb14733</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.rse.2021.112602$$EHTML$$P50$$Gelsevier$$Hfree_for_read</linktohtml><link.rule.ids>230,314,780,784,885,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://hal.science/hal-04615813$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Trebs, Ivonne</creatorcontrib><creatorcontrib>Mallick, Kaniska</creatorcontrib><creatorcontrib>Bhattarai, Nishan</creatorcontrib><creatorcontrib>Sulis, Mauro</creatorcontrib><creatorcontrib>Cleverly, Jamie</creatorcontrib><creatorcontrib>Woodgate, William</creatorcontrib><creatorcontrib>Silberstein, Richard</creatorcontrib><creatorcontrib>Hinko-Najera, Nina</creatorcontrib><creatorcontrib>Beringer, Jason</creatorcontrib><creatorcontrib>Meyer, Wayne S.</creatorcontrib><creatorcontrib>Su, Zhongbo</creatorcontrib><creatorcontrib>Boulet, Gilles</creatorcontrib><title>The role of aerodynamic resistance in thermal remote sensing-based evapotranspiration models</title><title>Remote sensing of environment</title><description>Aerodynamic resistance (hereafter ra) is a preeminent variable in evapotranspiration (ET) modelling. The accurate quantification of ra plays a pivotal role in determining the performance and consistency of thermal remote sensing-based surface energy balance (SEB) models for estimating ET at local to regional scales. Atmospheric stability links ra with land surface temperature (LST) and the representation of their interactions in the SEB models determines the accuracy of ET estimates. The present study investigates the influence of ra and its relation to LST uncertainties on the performance of three structurally different SEB models. It used data from nine Australian OzFlux eddy covariance sites of contrasting aridity in conjunction with MODIS Terra and Aqua LST and leaf area index (LAI) products. Simulations of the sensible heat flux (H) and the latent heat flux (LE, the energy equivalent of ET in W/m2) from the SPARSE (Soil Plant Atmosphere and Remote Sensing Evapotranspiration), SEBS (Surface Energy Balance System) and STIC (Surface Temperature Initiated Closure) models forced with MODIS LST, LAI, and in-situ meteorological datasets were evaluated against flux observations in water-limited (arid and semi-arid) and energy-limited (mesic) ecosystems from 2011 to 2019. Our results revealed an overestimation tendency of instantaneous LE by all three models in the water-limited shrubland, woodland and grassland ecosystems by up to 50% on average, which was caused by an underestimation of H. Overestimation of LE was associated with discrepancies in ra retrievals under conditions of high atmospheric instability, during which uncertainties in LST (expressed as the difference between MODIS LST and in-situ LST) apparently played a minor role. On the other hand, a positive difference in LST coincided with low ra (high wind speeds) and caused a slight underestimation of LE at the water-limited sites. The impact of ra on the LE residual error was found to be of the same magnitude as the influence of LST uncertainties in the semi-arid ecosystems as indicated by variable importance in projection (VIP) coefficients from partial least squares regression above unity. In contrast, our results for the mesic forest ecosystems indicated minor dependency on ra for modelling LE (VIP &lt; 0.4), which was due to a higher roughness length and lower LST resulting in the dominance of mechanically generated turbulence, thereby diminishing the importance of buoyancy production for the determination of ra. •Modelled latent heat flux is uncertain under drought due to aerodynamic resistance.•Overestimation of aerodynamic resistance at water-limited sites for low wind speed.•Stability links aerodynamic resistance with surface temperature and sensible heat.•Novel formulations for aerodynamic resistance are needed to model latent heat flux.</description><subject>Aerodynamic resistance</subject><subject>Aerodynamics</subject><subject>Aridity</subject><subject>Atmospheric models</subject><subject>Atmospheric stability</subject><subject>Ecosystems</subject><subject>Eddy covariance</subject><subject>Energy balance</subject><subject>Energy limitation</subject><subject>Enthalpy</subject><subject>Environmental Sciences</subject><subject>Evapotranspiration</subject><subject>Evapotranspiration estimates</subject><subject>Evapotranspiration models</subject><subject>Fluctuations</subject><subject>Forest ecosystems</subject><subject>Grasslands</subject><subject>Heat flux</subject><subject>Heat transfer</subject><subject>Land surface temperature</subject><subject>Latent heat</subject><subject>Latent heat flux</subject><subject>Leaf area</subject><subject>Leaf area index</subject><subject>Least squares method</subject><subject>Modelling</subject><subject>MODIS</subject><subject>Remote sensing</subject><subject>Roughness length</subject><subject>Sensible heat</subject><subject>Sensible heat flux</subject><subject>Surface energy</subject><subject>Surface energy balance</subject><subject>Surface energy balance model</subject><subject>Surface properties</subject><subject>Surface stability</subject><subject>Surface temperature</subject><subject>Terrestrial ecosystems</subject><subject>Thermal remote sensing</subject><subject>Thermal resistance</subject><subject>Uncertainty</subject><subject>Wind speed</subject><subject>Woodlands</subject><issn>0034-4257</issn><issn>1879-0704</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp9kEFr3DAQhUVoIdu0PyA3QU49eDsjyZaXnkJom8JCL3ssiLE87mqxra3kLOTfV4tLjz0NPN57zPuEuEfYImDz6bRNmbcKFG4RVQPqRmywtbsKLJg3YgOgTWVUbW_Fu5xPAFi3Fjfi5-HIMsWRZRwkcYr960xT8DJxDnmh2bMMs1yOnCYaizrFhWXmOYf5V9VR5l7yhc5xSTTnc0i0hDjLKfY85vfi7UBj5g9_7504fP1yeHqu9j--fX963Ffe1LBUelCq16zIIlEHAzChhlqrztjGa-2buveoqVE7NNgOprdd27Ww6zo0Vus78XGtPdLozilMlF5dpOCeH_fuqoFpylzUFyzeh9V7TvH3C-fFneJLmst3TtUtgDVa2-LC1eVTzDnx8K8WwV15u5MrvN2Vt1t5l8znNVOG8yVwctkHLvz6kNgvro_hP-k_EHCHxw</recordid><startdate>202110</startdate><enddate>202110</enddate><creator>Trebs, Ivonne</creator><creator>Mallick, Kaniska</creator><creator>Bhattarai, Nishan</creator><creator>Sulis, Mauro</creator><creator>Cleverly, Jamie</creator><creator>Woodgate, William</creator><creator>Silberstein, Richard</creator><creator>Hinko-Najera, Nina</creator><creator>Beringer, Jason</creator><creator>Meyer, Wayne S.</creator><creator>Su, Zhongbo</creator><creator>Boulet, Gilles</creator><general>Elsevier Inc</general><general>Elsevier BV</general><general>Elsevier</general><scope>6I.</scope><scope>AAFTH</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QO</scope><scope>7QQ</scope><scope>7SC</scope><scope>7SE</scope><scope>7SN</scope><scope>7SP</scope><scope>7SR</scope><scope>7TA</scope><scope>7TB</scope><scope>7TG</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>H8G</scope><scope>JG9</scope><scope>JQ2</scope><scope>KL.</scope><scope>KR7</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><scope>P64</scope><scope>1XC</scope><scope>VOOES</scope></search><sort><creationdate>202110</creationdate><title>The role of aerodynamic resistance in thermal remote sensing-based evapotranspiration models</title><author>Trebs, Ivonne ; Mallick, Kaniska ; Bhattarai, Nishan ; Sulis, Mauro ; Cleverly, Jamie ; Woodgate, William ; Silberstein, Richard ; Hinko-Najera, Nina ; Beringer, Jason ; Meyer, Wayne S. ; Su, Zhongbo ; Boulet, Gilles</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c450t-3f22d3e2a71aab0f0ea130532b476c33c65dc13a6291418f4d7b8b809bb14733</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Aerodynamic resistance</topic><topic>Aerodynamics</topic><topic>Aridity</topic><topic>Atmospheric models</topic><topic>Atmospheric stability</topic><topic>Ecosystems</topic><topic>Eddy covariance</topic><topic>Energy balance</topic><topic>Energy limitation</topic><topic>Enthalpy</topic><topic>Environmental Sciences</topic><topic>Evapotranspiration</topic><topic>Evapotranspiration estimates</topic><topic>Evapotranspiration models</topic><topic>Fluctuations</topic><topic>Forest ecosystems</topic><topic>Grasslands</topic><topic>Heat flux</topic><topic>Heat transfer</topic><topic>Land surface temperature</topic><topic>Latent heat</topic><topic>Latent heat flux</topic><topic>Leaf area</topic><topic>Leaf area index</topic><topic>Least squares method</topic><topic>Modelling</topic><topic>MODIS</topic><topic>Remote sensing</topic><topic>Roughness length</topic><topic>Sensible heat</topic><topic>Sensible heat flux</topic><topic>Surface energy</topic><topic>Surface energy balance</topic><topic>Surface energy balance model</topic><topic>Surface properties</topic><topic>Surface stability</topic><topic>Surface temperature</topic><topic>Terrestrial ecosystems</topic><topic>Thermal remote sensing</topic><topic>Thermal resistance</topic><topic>Uncertainty</topic><topic>Wind speed</topic><topic>Woodlands</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Trebs, Ivonne</creatorcontrib><creatorcontrib>Mallick, Kaniska</creatorcontrib><creatorcontrib>Bhattarai, Nishan</creatorcontrib><creatorcontrib>Sulis, Mauro</creatorcontrib><creatorcontrib>Cleverly, Jamie</creatorcontrib><creatorcontrib>Woodgate, William</creatorcontrib><creatorcontrib>Silberstein, Richard</creatorcontrib><creatorcontrib>Hinko-Najera, Nina</creatorcontrib><creatorcontrib>Beringer, Jason</creatorcontrib><creatorcontrib>Meyer, Wayne S.</creatorcontrib><creatorcontrib>Su, Zhongbo</creatorcontrib><creatorcontrib>Boulet, Gilles</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Biotechnology Research Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Computer and Information Systems Abstracts</collection><collection>Corrosion Abstracts</collection><collection>Ecology Abstracts</collection><collection>Electronics &amp; Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Materials Business File</collection><collection>Mechanical &amp; Transportation Engineering Abstracts</collection><collection>Meteorological &amp; Geoastrophysical Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ANTE: Abstracts in New Technology &amp; Engineering</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Copper Technical Reference Library</collection><collection>Materials Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>Meteorological &amp; Geoastrophysical Abstracts - Academic</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Computer and Information Systems Abstracts – Academic</collection><collection>Computer and Information Systems Abstracts Professional</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>Hyper Article en Ligne (HAL) (Open Access)</collection><jtitle>Remote sensing of environment</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Trebs, Ivonne</au><au>Mallick, Kaniska</au><au>Bhattarai, Nishan</au><au>Sulis, Mauro</au><au>Cleverly, Jamie</au><au>Woodgate, William</au><au>Silberstein, Richard</au><au>Hinko-Najera, Nina</au><au>Beringer, Jason</au><au>Meyer, Wayne S.</au><au>Su, Zhongbo</au><au>Boulet, Gilles</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The role of aerodynamic resistance in thermal remote sensing-based evapotranspiration models</atitle><jtitle>Remote sensing of environment</jtitle><date>2021-10</date><risdate>2021</risdate><volume>264</volume><spage>112602</spage><pages>112602-</pages><artnum>112602</artnum><issn>0034-4257</issn><eissn>1879-0704</eissn><abstract>Aerodynamic resistance (hereafter ra) is a preeminent variable in evapotranspiration (ET) modelling. The accurate quantification of ra plays a pivotal role in determining the performance and consistency of thermal remote sensing-based surface energy balance (SEB) models for estimating ET at local to regional scales. Atmospheric stability links ra with land surface temperature (LST) and the representation of their interactions in the SEB models determines the accuracy of ET estimates. The present study investigates the influence of ra and its relation to LST uncertainties on the performance of three structurally different SEB models. It used data from nine Australian OzFlux eddy covariance sites of contrasting aridity in conjunction with MODIS Terra and Aqua LST and leaf area index (LAI) products. Simulations of the sensible heat flux (H) and the latent heat flux (LE, the energy equivalent of ET in W/m2) from the SPARSE (Soil Plant Atmosphere and Remote Sensing Evapotranspiration), SEBS (Surface Energy Balance System) and STIC (Surface Temperature Initiated Closure) models forced with MODIS LST, LAI, and in-situ meteorological datasets were evaluated against flux observations in water-limited (arid and semi-arid) and energy-limited (mesic) ecosystems from 2011 to 2019. Our results revealed an overestimation tendency of instantaneous LE by all three models in the water-limited shrubland, woodland and grassland ecosystems by up to 50% on average, which was caused by an underestimation of H. Overestimation of LE was associated with discrepancies in ra retrievals under conditions of high atmospheric instability, during which uncertainties in LST (expressed as the difference between MODIS LST and in-situ LST) apparently played a minor role. On the other hand, a positive difference in LST coincided with low ra (high wind speeds) and caused a slight underestimation of LE at the water-limited sites. The impact of ra on the LE residual error was found to be of the same magnitude as the influence of LST uncertainties in the semi-arid ecosystems as indicated by variable importance in projection (VIP) coefficients from partial least squares regression above unity. In contrast, our results for the mesic forest ecosystems indicated minor dependency on ra for modelling LE (VIP &lt; 0.4), which was due to a higher roughness length and lower LST resulting in the dominance of mechanically generated turbulence, thereby diminishing the importance of buoyancy production for the determination of ra. •Modelled latent heat flux is uncertain under drought due to aerodynamic resistance.•Overestimation of aerodynamic resistance at water-limited sites for low wind speed.•Stability links aerodynamic resistance with surface temperature and sensible heat.•Novel formulations for aerodynamic resistance are needed to model latent heat flux.</abstract><cop>New York</cop><pub>Elsevier Inc</pub><doi>10.1016/j.rse.2021.112602</doi><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier ISSN: 0034-4257
ispartof Remote sensing of environment, 2021-10, Vol.264, p.112602, Article 112602
issn 0034-4257
1879-0704
language eng
recordid cdi_hal_primary_oai_HAL_hal_04615813v1
source Access via ScienceDirect (Elsevier)
subjects Aerodynamic resistance
Aerodynamics
Aridity
Atmospheric models
Atmospheric stability
Ecosystems
Eddy covariance
Energy balance
Energy limitation
Enthalpy
Environmental Sciences
Evapotranspiration
Evapotranspiration estimates
Evapotranspiration models
Fluctuations
Forest ecosystems
Grasslands
Heat flux
Heat transfer
Land surface temperature
Latent heat
Latent heat flux
Leaf area
Leaf area index
Least squares method
Modelling
MODIS
Remote sensing
Roughness length
Sensible heat
Sensible heat flux
Surface energy
Surface energy balance
Surface energy balance model
Surface properties
Surface stability
Surface temperature
Terrestrial ecosystems
Thermal remote sensing
Thermal resistance
Uncertainty
Wind speed
Woodlands
title The role of aerodynamic resistance in thermal remote sensing-based evapotranspiration models
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-27T16%3A46%3A17IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_hal_p&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=The%20role%20of%20aerodynamic%20resistance%20in%20thermal%20remote%20sensing-based%20evapotranspiration%20models&rft.jtitle=Remote%20sensing%20of%20environment&rft.au=Trebs,%20Ivonne&rft.date=2021-10&rft.volume=264&rft.spage=112602&rft.pages=112602-&rft.artnum=112602&rft.issn=0034-4257&rft.eissn=1879-0704&rft_id=info:doi/10.1016/j.rse.2021.112602&rft_dat=%3Cproquest_hal_p%3E2580074337%3C/proquest_hal_p%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2580074337&rft_id=info:pmid/&rft_els_id=S0034425721003229&rfr_iscdi=true