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| - | ='''Preparation of ten-daily rainfall and ET<sub>0</sub> records for crop forecasting '''= | + | ='''Preparation of ten-daily rainfall and ET<sub>0</sub> maps for crop forecasting '''= |
| Crop forecasting based on water balance calculations is usually done in a ten-day timestep. A ten day period is called a “dekad”. However, should daily weather data of good spatial and temporal extend be available, the water balance can be run in AgrometShell on a daily basis. | Crop forecasting based on water balance calculations is usually done in a ten-day timestep. A ten day period is called a “dekad”. However, should daily weather data of good spatial and temporal extend be available, the water balance can be run in AgrometShell on a daily basis. | ||
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| * Normal rainfall data | * Normal rainfall data | ||
| * Normal ET<sub>0</sub> data | * Normal ET<sub>0</sub> data | ||
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| + | These data form indicators in itself, even without using them directly in a water balance calculation. Some examples are given below: | ||
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| + | A simple rainfall map for the current dekad | ||
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| + | {|"class=prettytable" cellpadding="15" border="1" style="border-collapse:collapse" | ||
| + | |width="300"| Start the “Database-Map” function. This example will display rainfall data for a specific dekad in 2002 for Bangladesh.||[[Image:graph37.jpg|400px|]] | ||
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| + | |width="225"| ||[[Image:graph29.jpg|400px|]] | ||
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| </blockquote> | </blockquote> | ||
Revision as of 09:17, 18 August 2006
Preparation of ten-daily rainfall and ET0 maps for crop forecasting
Crop forecasting based on water balance calculations is usually done in a ten-day timestep. A ten day period is called a “dekad”. However, should daily weather data of good spatial and temporal extend be available, the water balance can be run in AgrometShell on a daily basis.
In order to do crop forecasting the following weather data have to be gathered:
- Actual decadal rainfall data for the running season.
- Actual decadal ET0 data for the running season
- Normal rainfall data
- Normal ET0 data
These data form indicators in itself, even without using them directly in a water balance calculation. Some examples are given below:
A simple rainfall map for the current dekad
Start the “Database-Map” function. This example will display rainfall data for a specific dekad in 2002 for Bangladesh. 
