annual cycle of humidity?

T. Martin timm at
Tue Dec 17 13:55:08 EST 1996

Depending on the time step of your model, this might help:

Castellvi, F., P.J. Perez, J.M. Villar and J.I. Rosell. 1996. Analysis of
methods for estimating vapor pressure deficits and relative humidity.
Agricultural and Forest Meteorology 82:29-45.

| Tim Martin                  |
| College of Forest Resources |
| University of Washington    |

On 17 Dec 1996, Barbara & Mirella wrote:

> Date: 17 Dec 1996 07:27:39 -0800
> From: Barbara & Mirella <barmier at>
> Newsgroups: bionet.ecology.physiology
> Subject: annual cycle of humidity?
> Hi all,
> I've a question. I'm busy modelling the effects of UV-B depletion on
> the decomposition of litter. The model is based on experiments done on
> Calamagrostis epigeios in Heemskerk, Holland. The model is going to be
> written in Pascal. In this model the decomposition is corrected for
> temperature, the quality of litter, humidity, etc. I've found a
> equation which describes the annual cycle of temperature. This
> equation is used in the Arrheniusequation to correct the model for
> temperature. I've been looking for the same kind of relationship with
> regard to humidity, but untill today I haven't found such a
> relationship. Can someone help me finding a annual cycle of humidity?
> Any suggetsions, solutions, or literature references are much
> appreciated.
> Greetings,
> M. de Vries.

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