In Situ Estimates of Freezing/Melting Point Depression in Agricultural Soils Using Permittivity and Temperature Measurements
We present a method to characterize soil moisture freeze‐thaw events and freezing/melting point depression using permittivity and temperature measurements, readily available from in situ sources. In cold regions soil freeze‐thaw processes play a critical role in the surface energy and water balance,...
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description | We present a method to characterize soil moisture freeze‐thaw events and freezing/melting point depression using permittivity and temperature measurements, readily available from in situ sources. In cold regions soil freeze‐thaw processes play a critical role in the surface energy and water balance, with implications ranging from agricultural yields to natural disasters. Although monitoring of the soil moisture phase state is of critical importance, there is an inability to interpret soil moisture instrumentation in frozen conditions. To address this gap, we investigated the freeze‐thaw response of a widely used soil moisture probe, the HydraProbe, in the laboratory. Soil freezing curves (SFCs) and soil thawing curves (STCs) were identified using the relationship between soil permittivity and temperature. The permittivity SFC/STC was fit using a logistic growth model to estimate the freezing/melting point depression (Tf/m) and its spread (s). Laboratory results showed that the fitting routine requires permittivity changes greater than 3.8 to provide robust estimates and suggested that a temperature bias is inherent in horizontally placed HydraProbes. We tested the method using field measurements collected over the last 7 years from the Environment and Climate Change Canada and the University of Guelph's Kenaston Soil Moisture Network in Saskatchewan, Canada. By dividing the time series into freeze‐thaw events and then into individual transitions, the permittivity SFC/STC was identified. The freezing and melting point depression for the network was estimated as Tf/m = − 0.35 ± 0.2,with Tf = − 0.41 ± 0.22 °C and Tm = − 0.29 ± 0.16 °C, respectively.
Key Points
The freeze‐thaw response of a widely used soil moisture probe was investigated, and permittivity soil freezing/thawing curves were identified
A logistic growth model was fitted to the permittivity soil freezing/thawing curves yielding freezing/melting point depression estimates
In situ estimates of the freezing/melting point depression and frozen water saturation provided for the Kenaston Soil Moisture Network |
doi_str_mv | 10.1029/2019WR026020 |
format | Article |
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Key Points
The freeze‐thaw response of a widely used soil moisture probe was investigated, and permittivity soil freezing/thawing curves were identified
A logistic growth model was fitted to the permittivity soil freezing/thawing curves yielding freezing/melting point depression estimates
In situ estimates of the freezing/melting point depression and frozen water saturation provided for the Kenaston Soil Moisture Network</description><identifier>ISSN: 0043-1397</identifier><identifier>EISSN: 1944-7973</identifier><identifier>DOI: 10.1029/2019WR026020</identifier><language>eng</language><publisher>Washington: John Wiley & Sons, Inc</publisher><subject>Agricultural land ; Climate change ; Cold regions ; cryosphere ; Disasters ; Environmental monitoring ; freeze thaw ; Freeze-thawing ; Freezing ; Freezing point ; freezing point depression ; Frozen ground ; Growth models ; Identification ; Instrumentation ; Laboratories ; Melting ; Melting point ; Melting points ; Moisture probe ; Natural disasters ; Permittivity ; seasonally frozen ground ; Soil ; Soil freezing ; soil freezing curve ; Soil investigations ; Soil moisture ; Soil temperature ; Soils ; Surface energy ; Surface properties ; Temperature measurement ; Thawing ; Water balance</subject><ispartof>Water resources research, 2020-05, Vol.56 (5), p.n/a</ispartof><rights>2020. American Geophysical Union. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a3308-54900fbbff6492069fd834c97f819c314d15ef89cb074e330755462862eafecc3</citedby><cites>FETCH-LOGICAL-a3308-54900fbbff6492069fd834c97f819c314d15ef89cb074e330755462862eafecc3</cites><orcidid>0000-0001-7412-1583 ; 0000-0001-8438-5662</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1029%2F2019WR026020$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1029%2F2019WR026020$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,11514,27924,27925,45574,45575,46468,46892</link.rule.ids></links><search><creatorcontrib>Pardo Lara, R.</creatorcontrib><creatorcontrib>Berg, A. A.</creatorcontrib><creatorcontrib>Warland, J.</creatorcontrib><creatorcontrib>Tetlock, Erica</creatorcontrib><title>In Situ Estimates of Freezing/Melting Point Depression in Agricultural Soils Using Permittivity and Temperature Measurements</title><title>Water resources research</title><description>We present a method to characterize soil moisture freeze‐thaw events and freezing/melting point depression using permittivity and temperature measurements, readily available from in situ sources. In cold regions soil freeze‐thaw processes play a critical role in the surface energy and water balance, with implications ranging from agricultural yields to natural disasters. Although monitoring of the soil moisture phase state is of critical importance, there is an inability to interpret soil moisture instrumentation in frozen conditions. To address this gap, we investigated the freeze‐thaw response of a widely used soil moisture probe, the HydraProbe, in the laboratory. Soil freezing curves (SFCs) and soil thawing curves (STCs) were identified using the relationship between soil permittivity and temperature. The permittivity SFC/STC was fit using a logistic growth model to estimate the freezing/melting point depression (Tf/m) and its spread (s). Laboratory results showed that the fitting routine requires permittivity changes greater than 3.8 to provide robust estimates and suggested that a temperature bias is inherent in horizontally placed HydraProbes. We tested the method using field measurements collected over the last 7 years from the Environment and Climate Change Canada and the University of Guelph's Kenaston Soil Moisture Network in Saskatchewan, Canada. By dividing the time series into freeze‐thaw events and then into individual transitions, the permittivity SFC/STC was identified. The freezing and melting point depression for the network was estimated as Tf/m = − 0.35 ± 0.2,with Tf = − 0.41 ± 0.22 °C and Tm = − 0.29 ± 0.16 °C, respectively.
Key Points
The freeze‐thaw response of a widely used soil moisture probe was investigated, and permittivity soil freezing/thawing curves were identified
A logistic growth model was fitted to the permittivity soil freezing/thawing curves yielding freezing/melting point depression estimates
In situ estimates of the freezing/melting point depression and frozen water saturation provided for the Kenaston Soil Moisture Network</description><subject>Agricultural land</subject><subject>Climate change</subject><subject>Cold regions</subject><subject>cryosphere</subject><subject>Disasters</subject><subject>Environmental monitoring</subject><subject>freeze thaw</subject><subject>Freeze-thawing</subject><subject>Freezing</subject><subject>Freezing point</subject><subject>freezing point depression</subject><subject>Frozen ground</subject><subject>Growth models</subject><subject>Identification</subject><subject>Instrumentation</subject><subject>Laboratories</subject><subject>Melting</subject><subject>Melting point</subject><subject>Melting points</subject><subject>Moisture probe</subject><subject>Natural disasters</subject><subject>Permittivity</subject><subject>seasonally frozen ground</subject><subject>Soil</subject><subject>Soil freezing</subject><subject>soil freezing curve</subject><subject>Soil investigations</subject><subject>Soil moisture</subject><subject>Soil temperature</subject><subject>Soils</subject><subject>Surface energy</subject><subject>Surface properties</subject><subject>Temperature measurement</subject><subject>Thawing</subject><subject>Water balance</subject><issn>0043-1397</issn><issn>1944-7973</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp9kEtLAzEURoMoWKs7f0DArWPzmkeWpVottCh90OUwnd6UlJnMmGSUij_eaF24cnU2534XDkLXlNxRwuSAESrXc8ISwsgJ6lEpRJTKlJ-iHiGCR5TL9BxdOLcnhIo4SXvoc2LwQvsOPziv68KDw43CYwvwoc1uMIPKB-KXRhuP76G14JxuDNYGD3dWl13lO1tUeNHoyuGV-5HB1tp7_ab9ARdmi5dQt2CLYAKeQeECazDeXaIzVVQOrn7ZR6vxw3L0FE2fHyej4TQqOCdZFAtJiNpslEqEZCSRaptxUcpUZVSWnIotjUFlstyQVEA4SeNYJCxLGBQKypL30c1xt7XNawfO5_umsya8zJkIeyzhkgbr9miVtnHOgspbG5LYQ05J_t03_9s36Pyov-sKDv-6-Xo-mrMQPONfmpJ9ng</recordid><startdate>202005</startdate><enddate>202005</enddate><creator>Pardo Lara, R.</creator><creator>Berg, A. A.</creator><creator>Warland, J.</creator><creator>Tetlock, Erica</creator><general>John Wiley & Sons, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QH</scope><scope>7QL</scope><scope>7T7</scope><scope>7TG</scope><scope>7U9</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H94</scope><scope>H96</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope><scope>M7N</scope><scope>P64</scope><orcidid>https://orcid.org/0000-0001-7412-1583</orcidid><orcidid>https://orcid.org/0000-0001-8438-5662</orcidid></search><sort><creationdate>202005</creationdate><title>In Situ Estimates of Freezing/Melting Point Depression in Agricultural Soils Using Permittivity and Temperature Measurements</title><author>Pardo Lara, R. ; Berg, A. A. ; Warland, J. ; Tetlock, Erica</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a3308-54900fbbff6492069fd834c97f819c314d15ef89cb074e330755462862eafecc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Agricultural land</topic><topic>Climate change</topic><topic>Cold regions</topic><topic>cryosphere</topic><topic>Disasters</topic><topic>Environmental monitoring</topic><topic>freeze thaw</topic><topic>Freeze-thawing</topic><topic>Freezing</topic><topic>Freezing point</topic><topic>freezing point depression</topic><topic>Frozen ground</topic><topic>Growth models</topic><topic>Identification</topic><topic>Instrumentation</topic><topic>Laboratories</topic><topic>Melting</topic><topic>Melting point</topic><topic>Melting points</topic><topic>Moisture probe</topic><topic>Natural disasters</topic><topic>Permittivity</topic><topic>seasonally frozen ground</topic><topic>Soil</topic><topic>Soil freezing</topic><topic>soil freezing curve</topic><topic>Soil investigations</topic><topic>Soil moisture</topic><topic>Soil temperature</topic><topic>Soils</topic><topic>Surface energy</topic><topic>Surface properties</topic><topic>Temperature measurement</topic><topic>Thawing</topic><topic>Water balance</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Pardo Lara, R.</creatorcontrib><creatorcontrib>Berg, A. A.</creatorcontrib><creatorcontrib>Warland, J.</creatorcontrib><creatorcontrib>Tetlock, Erica</creatorcontrib><collection>CrossRef</collection><collection>Aqualine</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><jtitle>Water resources research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Pardo Lara, R.</au><au>Berg, A. A.</au><au>Warland, J.</au><au>Tetlock, Erica</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>In Situ Estimates of Freezing/Melting Point Depression in Agricultural Soils Using Permittivity and Temperature Measurements</atitle><jtitle>Water resources research</jtitle><date>2020-05</date><risdate>2020</risdate><volume>56</volume><issue>5</issue><epage>n/a</epage><issn>0043-1397</issn><eissn>1944-7973</eissn><abstract>We present a method to characterize soil moisture freeze‐thaw events and freezing/melting point depression using permittivity and temperature measurements, readily available from in situ sources. In cold regions soil freeze‐thaw processes play a critical role in the surface energy and water balance, with implications ranging from agricultural yields to natural disasters. Although monitoring of the soil moisture phase state is of critical importance, there is an inability to interpret soil moisture instrumentation in frozen conditions. To address this gap, we investigated the freeze‐thaw response of a widely used soil moisture probe, the HydraProbe, in the laboratory. Soil freezing curves (SFCs) and soil thawing curves (STCs) were identified using the relationship between soil permittivity and temperature. The permittivity SFC/STC was fit using a logistic growth model to estimate the freezing/melting point depression (Tf/m) and its spread (s). Laboratory results showed that the fitting routine requires permittivity changes greater than 3.8 to provide robust estimates and suggested that a temperature bias is inherent in horizontally placed HydraProbes. We tested the method using field measurements collected over the last 7 years from the Environment and Climate Change Canada and the University of Guelph's Kenaston Soil Moisture Network in Saskatchewan, Canada. By dividing the time series into freeze‐thaw events and then into individual transitions, the permittivity SFC/STC was identified. The freezing and melting point depression for the network was estimated as Tf/m = − 0.35 ± 0.2,with Tf = − 0.41 ± 0.22 °C and Tm = − 0.29 ± 0.16 °C, respectively.
Key Points
The freeze‐thaw response of a widely used soil moisture probe was investigated, and permittivity soil freezing/thawing curves were identified
A logistic growth model was fitted to the permittivity soil freezing/thawing curves yielding freezing/melting point depression estimates
In situ estimates of the freezing/melting point depression and frozen water saturation provided for the Kenaston Soil Moisture Network</abstract><cop>Washington</cop><pub>John Wiley & Sons, Inc</pub><doi>10.1029/2019WR026020</doi><tpages>16</tpages><orcidid>https://orcid.org/0000-0001-7412-1583</orcidid><orcidid>https://orcid.org/0000-0001-8438-5662</orcidid></addata></record> |
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subjects | Agricultural land Climate change Cold regions cryosphere Disasters Environmental monitoring freeze thaw Freeze-thawing Freezing Freezing point freezing point depression Frozen ground Growth models Identification Instrumentation Laboratories Melting Melting point Melting points Moisture probe Natural disasters Permittivity seasonally frozen ground Soil Soil freezing soil freezing curve Soil investigations Soil moisture Soil temperature Soils Surface energy Surface properties Temperature measurement Thawing Water balance |
title | In Situ Estimates of Freezing/Melting Point Depression in Agricultural Soils Using Permittivity and Temperature Measurements |
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