| Author | Iwata, Toru| |
|---|---|
| Published Date | 2004-03-25 |
| Publication Title | |
| Content Type | Thesis or Dissertation |
| Author | 楊 冬梅| 岩田 徹| 三浦 健志| |
|---|---|
| Published Date | 2003-12 |
| Publication Title | 岡山大学農学部センター報告 |
| Volume | volume25 |
| Issue | issue1 |
| Content Type | Departmental Bulletin Paper |
| Author | 北垣 順大| 牛川 希望| 岩田 徹| 大滝 英治| |
|---|---|
| Published Date | 2003-12 |
| Publication Title | 岡山大学農学部センター報告 |
| Volume | volume24 |
| Issue | issue1 |
| Content Type | Departmental Bulletin Paper |
| JaLCDOI | 10.18926/fest/11459 |
|---|---|
| Title Alternative | CO(2) Fluxes Measured by Eddy Correlation and Aerodynamic Techniques |
| FullText URL | 009_069_073.pdf |
| Author | Inohara, Sachiko| Iwata, Toru| Ohtaki, Eiji| |
| Abstract | To elucidate the seasonal and inter-annual variation of CO(2) exchanges between the atmosphere and cultivated field in Japan, the CO(2) flux has been measured by the eddy correlation technique at the experimental farm of Agricultural Faculty, Okayama University since December in 1998. The CO(2) sensor, however, does not work under rainy conditions. The improved aerodynamic technique was developed and used to cover CO(2) flux data which were not collected. This technique gives reasonable CO(2) fluxes even in rainy days. The reliability of the technique was also confirmed by comparing CO(2) fluxes with those measured by the eddy correlation technique using data in fine weather conditions. |
| Keywords | CO(2) flux Eddy correlation technique Aerodynamic techniques Dimensionless profile |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2004-02-27 |
| Volume | volume9 |
| Issue | issue1 |
| Start Page | 69 |
| End Page | 73 |
| ISSN | 1341-9099 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002313999 |
| JaLCDOI | 10.18926/fest/11461 |
|---|---|
| Title Alternative | The Study of Monin-Obukhov Similarity of Vertical Wind Velocity and Scalar Quantities in the Atmospheric Surface Layer |
| FullText URL | 009_075_079.pdf |
| Author | Ushikawa, Nozomi| Iwata, Toru| Ohtaki, Eiji| |
| Abstract | Standard deviations for vertical wind velocity and scalar quantities, such as carbon dioxide,c, and water vapor,q, were analyzed on the basis of Monin-Obukhov similarity theory in the atmospheric surface layer. The correlation coefficient between scalar quantities c and q ,|R(cq)|, was derived from the similarity functions and can be expressed as the ratio of B(q)/B(c)(B(q)≤B(c)), where parameter B is the value of the normalized standard deviation of carbon dioxide and water vapor at neutral conditions. |
| Keywords | Monin-Obukhov similarity theory Standard deviation Correlation coefficient Carbon dioxide Water vapor |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2004-02-27 |
| Volume | volume9 |
| Issue | issue1 |
| Start Page | 75 |
| End Page | 79 |
| ISSN | 1341-9099 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002313729 |
| JaLCDOI | 10.18926/fest/11463 |
|---|---|
| Title Alternative | Heat Budget on Rice Field |
| FullText URL | 009_081_085.pdf |
| Author | Yang, Dongmei| Iwata, Toru| Miura, Takeshi| Ohtaki, Eiji| |
| Abstract | Experience of flux measurements over tall canopies has revealed that the eddy flux of sensible plus latent heat is about 30% smaller than the available radiant energy flux. A systematic observation was carried out to investigate the imbalance problem on rice field. The rice field represents a complex system consisting of rice plant, irrigated water and soil. Date obtained in this experiment show that appreciable understimations of sensible and latent heat fluxes are not recognized but understimations of 15 to 23% are counted in the soil heat flux. |
| Keywords | Heat budget Eddy correlation method Sensible heat flux Latent heat flux Soil heat flux |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2004-02-27 |
| Volume | volume9 |
| Issue | issue1 |
| Start Page | 81 |
| End Page | 85 |
| ISSN | 1341-9099 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002313468 |
| Author | 牛川 希望| Iwata, Tooru| Miura, Takeshi| |
|---|---|
| Published Date | 2004-07-01 |
| Publication Title | 岡山大学農学部センター報告 |
| Volume | volume26 |
| Content Type | Departmental Bulletin Paper |
| Author | 猪原 幸子| Iwata, Tooru| Miura, Takeshi| |
|---|---|
| Published Date | 2004-07-01 |
| Publication Title | 岡山大学農学部センター報告 |
| Volume | volume26 |
| Content Type | Departmental Bulletin Paper |
