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Estimating the temporal domain when the discount of the net evaporation term affects the resulting net precipitation pattern in the moisture budget using a 3-D Lagrangian approach.

Castillo R, Nieto R, Drumond A, Gimeno L - PLoS ONE (2014)

Bottom Line: The methodology identifies the contribution of humidity to the moisture budget in a region by computing the changes in specific humidity along backward (or forward) trajectories of air masses over a period of ten days beforehand (afterwards), thereby allowing the calculation of monthly, seasonal and annual averages.The current study calculates as an example the climatological seasonal mean and variance of the net precipitation for regions in which precipitation exceeds evaporation (E-P<0) for the North Atlantic moisture source region using different time periods, for winter and summer from 1980 to 2000.The results show that net evaporation (E-P>0) can be discounted after when the integration of E-P is done without affecting the general net precipitation patterns when it is discounted in a monthly or longer time scale.

View Article: PubMed Central - PubMed

Affiliation: EPhysLab, Departamento de Física Aplicada, Facultade de Ciencias, Universidade de Vigo, Ourense, Spain.

ABSTRACT
The Lagrangian FLEXPART model has been used during the last decade to detect moisture sources that affect the climate in different regions of the world. While most of these studies provided a climatological perspective on the atmospheric branch of the hydrological cycle in terms of precipitation, none assessed the minimum temporal domain for which the climatological approach is valid. The methodology identifies the contribution of humidity to the moisture budget in a region by computing the changes in specific humidity along backward (or forward) trajectories of air masses over a period of ten days beforehand (afterwards), thereby allowing the calculation of monthly, seasonal and annual averages. The current study calculates as an example the climatological seasonal mean and variance of the net precipitation for regions in which precipitation exceeds evaporation (E-P<0) for the North Atlantic moisture source region using different time periods, for winter and summer from 1980 to 2000. The results show that net evaporation (E-P>0) can be discounted after when the integration of E-P is done without affecting the general net precipitation patterns when it is discounted in a monthly or longer time scale.

Show MeSH
Approaches used to estimate the seasonal climatological mean and the seasonal-interannual variance of E-P<0 net through the E-P budget, by discounting the net evaporation E-P>0 from E-P at different time scales.Where the analysis abbreviations mean; hrs/hours, day/daily, int/integrated, month/monthly, season/seasonal and clim/climatological.
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pone-0099046-g002: Approaches used to estimate the seasonal climatological mean and the seasonal-interannual variance of E-P<0 net through the E-P budget, by discounting the net evaporation E-P>0 from E-P at different time scales.Where the analysis abbreviations mean; hrs/hours, day/daily, int/integrated, month/monthly, season/seasonal and clim/climatological.

Mentions: Figure 2 summarises the different approaches used, which were:


Estimating the temporal domain when the discount of the net evaporation term affects the resulting net precipitation pattern in the moisture budget using a 3-D Lagrangian approach.

Castillo R, Nieto R, Drumond A, Gimeno L - PLoS ONE (2014)

Approaches used to estimate the seasonal climatological mean and the seasonal-interannual variance of E-P<0 net through the E-P budget, by discounting the net evaporation E-P>0 from E-P at different time scales.Where the analysis abbreviations mean; hrs/hours, day/daily, int/integrated, month/monthly, season/seasonal and clim/climatological.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4044024&req=5

pone-0099046-g002: Approaches used to estimate the seasonal climatological mean and the seasonal-interannual variance of E-P<0 net through the E-P budget, by discounting the net evaporation E-P>0 from E-P at different time scales.Where the analysis abbreviations mean; hrs/hours, day/daily, int/integrated, month/monthly, season/seasonal and clim/climatological.
Mentions: Figure 2 summarises the different approaches used, which were:

Bottom Line: The methodology identifies the contribution of humidity to the moisture budget in a region by computing the changes in specific humidity along backward (or forward) trajectories of air masses over a period of ten days beforehand (afterwards), thereby allowing the calculation of monthly, seasonal and annual averages.The current study calculates as an example the climatological seasonal mean and variance of the net precipitation for regions in which precipitation exceeds evaporation (E-P<0) for the North Atlantic moisture source region using different time periods, for winter and summer from 1980 to 2000.The results show that net evaporation (E-P>0) can be discounted after when the integration of E-P is done without affecting the general net precipitation patterns when it is discounted in a monthly or longer time scale.

View Article: PubMed Central - PubMed

Affiliation: EPhysLab, Departamento de Física Aplicada, Facultade de Ciencias, Universidade de Vigo, Ourense, Spain.

ABSTRACT
The Lagrangian FLEXPART model has been used during the last decade to detect moisture sources that affect the climate in different regions of the world. While most of these studies provided a climatological perspective on the atmospheric branch of the hydrological cycle in terms of precipitation, none assessed the minimum temporal domain for which the climatological approach is valid. The methodology identifies the contribution of humidity to the moisture budget in a region by computing the changes in specific humidity along backward (or forward) trajectories of air masses over a period of ten days beforehand (afterwards), thereby allowing the calculation of monthly, seasonal and annual averages. The current study calculates as an example the climatological seasonal mean and variance of the net precipitation for regions in which precipitation exceeds evaporation (E-P<0) for the North Atlantic moisture source region using different time periods, for winter and summer from 1980 to 2000. The results show that net evaporation (E-P>0) can be discounted after when the integration of E-P is done without affecting the general net precipitation patterns when it is discounted in a monthly or longer time scale.

Show MeSH