### Abstract

The Monin-Obukhov similarity theory for carbon dioxide (c) and water vapor (q) is investigated using data obtained over a rice field. First, the similarity theory is applied to the standard deviations of c and q. It is noticed that the standard deviations normalized by their friction concentrations show very similar stability dependence: σ_{c}/|c_{∗}| = 3.0(1-7.0ζ)^{-1/3} and σ_{q}/|q_{∗}| = 2.9(1-7.0ζ)^{-1/3} under unstable conditions, and σ_{c}/|c_{∗}| = 3.0(1 +7.0ζ)^{1/3} and σ_{q}/|q_{∗}| = 2.9(1 +7.0ζ)^{1/3} under stable conditions. This results in the situation that the correlation coefficient between c and q can be expressed as the ratio of 2.9/3.0≈ 1, where numerals of 3.0 and 2.9 are the value of the normalized standard deviation of c and q under neutral conditions.

Original language | English |
---|---|

Pages (from-to) | 209-214 |

Number of pages | 6 |

Journal | Journal of Agricultural Meteorology |

Volume | 60 |

Issue number | 3 |

DOIs | |

Publication status | Published - 2004 |

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### Keywords

- Atmospheric surface layer
- Carbon dioxide
- Monin-Obukhov similarity theory
- Water vapor

### ASJC Scopus subject areas

- Agronomy and Crop Science
- Atmospheric Science

### Cite this

*Journal of Agricultural Meteorology*,

*60*(3), 209-214. https://doi.org/10.2480/agrmet.60.209

**Monin-Obukhov Similarity Theory for Carbon Dioxide, Water Vapor and Vertical Wind Velocity.** / Ushikawa, Nozomi; Iwata, Toru; Miura, Takeshi; Ohtaki, Eiji; Ohtou, Akinori; Higuchi, Yoshihisa.

Research output: Contribution to journal › Article

*Journal of Agricultural Meteorology*, vol. 60, no. 3, pp. 209-214. https://doi.org/10.2480/agrmet.60.209

}

TY - JOUR

T1 - Monin-Obukhov Similarity Theory for Carbon Dioxide, Water Vapor and Vertical Wind Velocity

AU - Ushikawa, Nozomi

AU - Iwata, Toru

AU - Miura, Takeshi

AU - Ohtaki, Eiji

AU - Ohtou, Akinori

AU - Higuchi, Yoshihisa

PY - 2004

Y1 - 2004

N2 - The Monin-Obukhov similarity theory for carbon dioxide (c) and water vapor (q) is investigated using data obtained over a rice field. First, the similarity theory is applied to the standard deviations of c and q. It is noticed that the standard deviations normalized by their friction concentrations show very similar stability dependence: σc/|c∗| = 3.0(1-7.0ζ)-1/3 and σq/|q∗| = 2.9(1-7.0ζ)-1/3 under unstable conditions, and σc/|c∗| = 3.0(1 +7.0ζ)1/3 and σq/|q∗| = 2.9(1 +7.0ζ)1/3 under stable conditions. This results in the situation that the correlation coefficient between c and q can be expressed as the ratio of 2.9/3.0≈ 1, where numerals of 3.0 and 2.9 are the value of the normalized standard deviation of c and q under neutral conditions.

AB - The Monin-Obukhov similarity theory for carbon dioxide (c) and water vapor (q) is investigated using data obtained over a rice field. First, the similarity theory is applied to the standard deviations of c and q. It is noticed that the standard deviations normalized by their friction concentrations show very similar stability dependence: σc/|c∗| = 3.0(1-7.0ζ)-1/3 and σq/|q∗| = 2.9(1-7.0ζ)-1/3 under unstable conditions, and σc/|c∗| = 3.0(1 +7.0ζ)1/3 and σq/|q∗| = 2.9(1 +7.0ζ)1/3 under stable conditions. This results in the situation that the correlation coefficient between c and q can be expressed as the ratio of 2.9/3.0≈ 1, where numerals of 3.0 and 2.9 are the value of the normalized standard deviation of c and q under neutral conditions.

KW - Atmospheric surface layer

KW - Carbon dioxide

KW - Monin-Obukhov similarity theory

KW - Water vapor

UR - http://www.scopus.com/inward/record.url?scp=31544454332&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=31544454332&partnerID=8YFLogxK

U2 - 10.2480/agrmet.60.209

DO - 10.2480/agrmet.60.209

M3 - Article

AN - SCOPUS:31544454332

VL - 60

SP - 209

EP - 214

JO - J. AGRICULTURAL METEOROLOGY

JF - J. AGRICULTURAL METEOROLOGY

SN - 0021-8588

IS - 3

ER -