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- Author or Editor: Philip W. Suckling x
- Journal of Applied Meteorology and Climatology x
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Abstract
Relationships for determining the maximum permissible distance for extrapolating daily totals of solar radiation from measurement sites are established for mesoscale monitoring networks in southern Arizona and the Tennessee Valley Authority (TVA) region. The method involves calculation of the standard deviation of the daily differences in solar radiation receipt for pairs of measurement stations in order to determine a coefficient of variability. This is then plotted as a function of distance between station pairs to establish an extrapolation distance relationship.
Results indicate that the solar climate of southern Arizona has much greater spatial coherence than that for the TVA region, thus permitting extrapolation of data over longer distances. However. extrapolation distances for daily totals of solar radiation are very small in either study area. Applied to monthly totals for an error tolerance of ±10% at a 90% confidence level. permissible extrapolation distances of more than 400 km for southern Arizona and ∼200 km for the Tennessee Valley were found. However, the extrapolation distances may vary with season.
Abstract
Relationships for determining the maximum permissible distance for extrapolating daily totals of solar radiation from measurement sites are established for mesoscale monitoring networks in southern Arizona and the Tennessee Valley Authority (TVA) region. The method involves calculation of the standard deviation of the daily differences in solar radiation receipt for pairs of measurement stations in order to determine a coefficient of variability. This is then plotted as a function of distance between station pairs to establish an extrapolation distance relationship.
Results indicate that the solar climate of southern Arizona has much greater spatial coherence than that for the TVA region, thus permitting extrapolation of data over longer distances. However. extrapolation distances for daily totals of solar radiation are very small in either study area. Applied to monthly totals for an error tolerance of ±10% at a 90% confidence level. permissible extrapolation distances of more than 400 km for southern Arizona and ∼200 km for the Tennessee Valley were found. However, the extrapolation distances may vary with season.
Abstract
A suburban lawn was instrumented in order to study its energy balance components during summer conditions. Results indicate that substantial latent heat fluxes can be experienced with values exceeding net radiation during portions of some days. On average, the energy balance fluxes were similar to those found in previous studies for rural grass surfaces. Since lawns form a large portion of the suburban landscape, this implies that suburban evapotranspiration is an important and perhaps dominant term in the energy balance.
Abstract
A suburban lawn was instrumented in order to study its energy balance components during summer conditions. Results indicate that substantial latent heat fluxes can be experienced with values exceeding net radiation during portions of some days. On average, the energy balance fluxes were similar to those found in previous studies for rural grass surfaces. Since lawns form a large portion of the suburban landscape, this implies that suburban evapotranspiration is an important and perhaps dominant term in the energy balance.
