Problem 8.1. On a given day, the following meteorological and surface measurements were collected at noon from a bare soil field site in the Emerald Lake watershed: Air temperature = 11.5°C Air relative humidity 46.5% 714 mb - = Surface air pressure Wind speed at 2m height 1.9 m s-¹ Soil surface temperature = 22.5°C The measurements are taken on the first sunny day after a rainstorm (you can assume the soil is saturated). The soil roughness elements have an average characteristic height of 5 cm. For simplicity, assume neutral atmospheric conditions. - a) What additional information/input data would you need if the soil were not saturated? b) Use the appropriate model to compute the instantaneous latent and sensible heat fluxes. c) What is the equivalent evaporation rate (in mm/day) from the surface at noon?
Problem 8.1. On a given day, the following meteorological and surface measurements were collected at noon from a bare soil field site in the Emerald Lake watershed: Air temperature = 11.5°C Air relative humidity 46.5% 714 mb - = Surface air pressure Wind speed at 2m height 1.9 m s-¹ Soil surface temperature = 22.5°C The measurements are taken on the first sunny day after a rainstorm (you can assume the soil is saturated). The soil roughness elements have an average characteristic height of 5 cm. For simplicity, assume neutral atmospheric conditions. - a) What additional information/input data would you need if the soil were not saturated? b) Use the appropriate model to compute the instantaneous latent and sensible heat fluxes. c) What is the equivalent evaporation rate (in mm/day) from the surface at noon?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Problem 8.1. On a given day, the following meteorological
and surface measurements were collected at noon from a bare
soil field site in the Emerald Lake watershed:
Air temperature 11.5°C
Air relative humidity = 46.5 %
:
Surface air pressure
714 mb
Wind speed at 2m height = 1.9 m s‐¹
Soil surface temperature
22.5°C
-
-
The measurements are taken on the first sunny day after a
rainstorm (you can assume the soil is saturated). The soil
roughness elements have an average characteristic height of 5
cm. For simplicity, assume neutral atmospheric conditions.
a) What additional information/input data would you need if
the soil were not saturated?
b) Use the appropriate model to compute the instantaneous
latent and sensible heat fluxes.
c) What is the equivalent evaporation rate (in mm/day) from
the surface at noon?
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