Evaluating micrometeorological estimates of groundwater discharge from Great Basin Desert Playas
| Publication Date: |
2018-03-06
|
|---|---|
| Publisher: |
Wiley-Blackwell
|
| Print ISSN: |
0017-467X
|
| Electronic ISSN: |
1745-6584
|
| Topics: |
Energy, Environment Protection, Nuclear Power Engineering
Geosciences
|
| Published by: |
| _version_ | 1836398822280921089 |
|---|---|
| autor | Tracie R. Jackson, Keith J. Halford, Philip M. Gardner |
| beschreibung | Groundwater availability studies in the arid southwestern United States traditionally have assumed that groundwater discharge by evapotranspiration (ET g ) from desert playas is a significant component of the groundwater budget. However, desert playa ET g rates are poorly constrained by Bowen Ratio energy budget (BREB) and eddy-covariance (EC) micrometeorological measurement approaches. Best attempts by previous studies to constrain ET g from desert playas have resulted in ET g rates that are within the measurement error of micrometeorological approaches. This study uses numerical models to further constrain desert playa ET g rates that are within the measurement error of BREB and EC approaches, and to evaluate the effect of hydraulic properties and salinity-based groundwater-density contrasts on desert playa ET g rates. Numerical models simulated ET g rates from desert playas in Death Valley, California and Dixie Valley, Nevada. Results indicate that actual ET g rates from desert playas are significantly below the uncertainty thresholds of BREB- and EC-based micrometeorological measurements. Discharge from desert playas likely contributes less than 2 percent of total groundwater discharge from Dixie and Death Valleys, which suggests discharge from desert playas also is negligible in other basins. Simulation results also show that ET g from desert playas primarily is limited by differences in hydraulic properties between alluvial fan and playa sediments and, to a lesser extent, by salinity-based groundwater density contrasts. |
| citation_standardnr | 6186594 |
| datenlieferant | ipn_articles |
| feed_id | 53327 |
| feed_publisher | Wiley-Blackwell |
| feed_publisher_url | http://www.wiley.com/wiley-blackwell |
| insertion_date | 2018-03-06 |
| journaleissn | 1745-6584 |
| journalissn | 0017-467X |
| publikationsjahr_anzeige | 2018 |
| publikationsjahr_facette | 2018 |
| publikationsjahr_intervall | 7984:2015-2019 |
| publikationsjahr_sort | 2018 |
| publisher | Wiley-Blackwell |
| quelle | Ground Water |
| relation | http://onlinelibrary.wiley.com/resolve/doi?DOI=10.1111%2Fgwat.12647 |
| search_space | articles |
| shingle_author_1 | Tracie R. Jackson, Keith J. Halford, Philip M. Gardner |
| shingle_author_2 | Tracie R. Jackson, Keith J. Halford, Philip M. Gardner |
| shingle_author_3 | Tracie R. Jackson, Keith J. Halford, Philip M. Gardner |
| shingle_author_4 | Tracie R. Jackson, Keith J. Halford, Philip M. Gardner |
| shingle_catch_all_1 | Evaluating micrometeorological estimates of groundwater discharge from Great Basin Desert Playas Groundwater availability studies in the arid southwestern United States traditionally have assumed that groundwater discharge by evapotranspiration (ET g ) from desert playas is a significant component of the groundwater budget. However, desert playa ET g rates are poorly constrained by Bowen Ratio energy budget (BREB) and eddy-covariance (EC) micrometeorological measurement approaches. Best attempts by previous studies to constrain ET g from desert playas have resulted in ET g rates that are within the measurement error of micrometeorological approaches. This study uses numerical models to further constrain desert playa ET g rates that are within the measurement error of BREB and EC approaches, and to evaluate the effect of hydraulic properties and salinity-based groundwater-density contrasts on desert playa ET g rates. Numerical models simulated ET g rates from desert playas in Death Valley, California and Dixie Valley, Nevada. Results indicate that actual ET g rates from desert playas are significantly below the uncertainty thresholds of BREB- and EC-based micrometeorological measurements. Discharge from desert playas likely contributes less than 2 percent of total groundwater discharge from Dixie and Death Valleys, which suggests discharge from desert playas also is negligible in other basins. Simulation results also show that ET g from desert playas primarily is limited by differences in hydraulic properties between alluvial fan and playa sediments and, to a lesser extent, by salinity-based groundwater density contrasts. Tracie R. Jackson, Keith J. Halford, Philip M. Gardner Wiley-Blackwell 0017-467X 0017467X 1745-6584 17456584 |
| shingle_catch_all_2 | Evaluating micrometeorological estimates of groundwater discharge from Great Basin Desert Playas Groundwater availability studies in the arid southwestern United States traditionally have assumed that groundwater discharge by evapotranspiration (ET g ) from desert playas is a significant component of the groundwater budget. However, desert playa ET g rates are poorly constrained by Bowen Ratio energy budget (BREB) and eddy-covariance (EC) micrometeorological measurement approaches. Best attempts by previous studies to constrain ET g from desert playas have resulted in ET g rates that are within the measurement error of micrometeorological approaches. This study uses numerical models to further constrain desert playa ET g rates that are within the measurement error of BREB and EC approaches, and to evaluate the effect of hydraulic properties and salinity-based groundwater-density contrasts on desert playa ET g rates. Numerical models simulated ET g rates from desert playas in Death Valley, California and Dixie Valley, Nevada. Results indicate that actual ET g rates from desert playas are significantly below the uncertainty thresholds of BREB- and EC-based micrometeorological measurements. Discharge from desert playas likely contributes less than 2 percent of total groundwater discharge from Dixie and Death Valleys, which suggests discharge from desert playas also is negligible in other basins. Simulation results also show that ET g from desert playas primarily is limited by differences in hydraulic properties between alluvial fan and playa sediments and, to a lesser extent, by salinity-based groundwater density contrasts. Tracie R. Jackson, Keith J. Halford, Philip M. Gardner Wiley-Blackwell 0017-467X 0017467X 1745-6584 17456584 |
| shingle_catch_all_3 | Evaluating micrometeorological estimates of groundwater discharge from Great Basin Desert Playas Groundwater availability studies in the arid southwestern United States traditionally have assumed that groundwater discharge by evapotranspiration (ET g ) from desert playas is a significant component of the groundwater budget. However, desert playa ET g rates are poorly constrained by Bowen Ratio energy budget (BREB) and eddy-covariance (EC) micrometeorological measurement approaches. Best attempts by previous studies to constrain ET g from desert playas have resulted in ET g rates that are within the measurement error of micrometeorological approaches. This study uses numerical models to further constrain desert playa ET g rates that are within the measurement error of BREB and EC approaches, and to evaluate the effect of hydraulic properties and salinity-based groundwater-density contrasts on desert playa ET g rates. Numerical models simulated ET g rates from desert playas in Death Valley, California and Dixie Valley, Nevada. Results indicate that actual ET g rates from desert playas are significantly below the uncertainty thresholds of BREB- and EC-based micrometeorological measurements. Discharge from desert playas likely contributes less than 2 percent of total groundwater discharge from Dixie and Death Valleys, which suggests discharge from desert playas also is negligible in other basins. Simulation results also show that ET g from desert playas primarily is limited by differences in hydraulic properties between alluvial fan and playa sediments and, to a lesser extent, by salinity-based groundwater density contrasts. Tracie R. Jackson, Keith J. Halford, Philip M. Gardner Wiley-Blackwell 0017-467X 0017467X 1745-6584 17456584 |
| shingle_catch_all_4 | Evaluating micrometeorological estimates of groundwater discharge from Great Basin Desert Playas Groundwater availability studies in the arid southwestern United States traditionally have assumed that groundwater discharge by evapotranspiration (ET g ) from desert playas is a significant component of the groundwater budget. However, desert playa ET g rates are poorly constrained by Bowen Ratio energy budget (BREB) and eddy-covariance (EC) micrometeorological measurement approaches. Best attempts by previous studies to constrain ET g from desert playas have resulted in ET g rates that are within the measurement error of micrometeorological approaches. This study uses numerical models to further constrain desert playa ET g rates that are within the measurement error of BREB and EC approaches, and to evaluate the effect of hydraulic properties and salinity-based groundwater-density contrasts on desert playa ET g rates. Numerical models simulated ET g rates from desert playas in Death Valley, California and Dixie Valley, Nevada. Results indicate that actual ET g rates from desert playas are significantly below the uncertainty thresholds of BREB- and EC-based micrometeorological measurements. Discharge from desert playas likely contributes less than 2 percent of total groundwater discharge from Dixie and Death Valleys, which suggests discharge from desert playas also is negligible in other basins. Simulation results also show that ET g from desert playas primarily is limited by differences in hydraulic properties between alluvial fan and playa sediments and, to a lesser extent, by salinity-based groundwater density contrasts. Tracie R. Jackson, Keith J. Halford, Philip M. Gardner Wiley-Blackwell 0017-467X 0017467X 1745-6584 17456584 |
| shingle_title_1 | Evaluating micrometeorological estimates of groundwater discharge from Great Basin Desert Playas |
| shingle_title_2 | Evaluating micrometeorological estimates of groundwater discharge from Great Basin Desert Playas |
| shingle_title_3 | Evaluating micrometeorological estimates of groundwater discharge from Great Basin Desert Playas |
| shingle_title_4 | Evaluating micrometeorological estimates of groundwater discharge from Great Basin Desert Playas |
| timestamp | 2025-06-30T23:33:11.467Z |
| titel | Evaluating micrometeorological estimates of groundwater discharge from Great Basin Desert Playas |
| titel_suche | Evaluating micrometeorological estimates of groundwater discharge from Great Basin Desert Playas |
| topic | ZP TE-TZ |
| uid | ipn_articles_6186594 |