@article{oai:ir.kagoshima-u.ac.jp:00001744, author = {伊藤, 祐二 and 籾井, 和朗 and 吉満, 由佳 and 面高, みさき and 中川, 啓 and 竹内, 真一}, journal = {鹿兒島大學農學部學術報告=Bulletin of the Faculty of Agriculture, Kagoshima University}, month = {2016-10-27}, note = {In estimating evapotraspiration from upland field using the Bowen ratio method, unacceptable values of evapotranspiration are often obtained due to observation errors caused by resolution limit and observation accuracy with measurement devices. In this study, estimation of evapotranspiration based on the Bowen ratio method was examined using field observation data and evaluation criteria for latent heat flux in an Italian ryegrass field. The results showed that the undesirable latent heat fluxes can be removed by the evaluation criteria. Most of the removed fluxes occured under the condition of negative or small net radiation and upward soil heat fluxes during night or early morning. Estimated evapotranspiration by the Bowen ratio method agreed with the results of the Penman method and the FAO Penman-Monteith method under no rainfall conditions for grass heights over 12 cm.}, pages = {21--28}, title = {Bowen比法による畑地の蒸発散量の推定に関する考察}, volume = {58}, year = {} }