All “anomaly” maps show the difference between the predicted monthly average values of various meteorological variables compared to the reference period. These reference periods vary depending on the selected model. Several third-party models are available, as well as a super ensemble (SA-ENSEMBLE) created by Meteoblue. The maps carry a relatively high degree of uncertainty. However, they are essential in certain economic sectors, such as agriculture, to enable long-term planning.
The anomaly forecast screen is divided into seven different maps, as described below:
6.3.1 – 2m Temperature
6.3.2 – 850mb Temperature
6.3.3 – Precipitation
6.3.4 – Evapotranspiration
6.3.5 – Sea Level Pressure
6.3.6 – Wind Speed
6.3.7 – El Niño
Below, we will discuss each of these maps in detail.
6.3.1 – 2m Temperature
The 2m temperature anomaly map (Nº1) illustrates the temperature anomalies using different colors on the map (Nº2) compared to historical data. Figure 6.3.1A below shows how the anomaly map is presented on the platform.
Figure 6.3.1A – 2m Temperature Map
Hovering the mouse over the map displays the different temperature anomaly values at 2m (Nº3) compared to the historical values of the region. If preferred, the map values can be compared to the legend (Nº4) located in the bottom left corner of the screen. The time selector bar (Nº5) shows the different available dates for checking anomaly forecasts for the given region. If the user needs to adjust the image’s zoom on the screen, they can use the pre-set Zoom options bar (Nº6) located in the top right corner of the screen.
6.3.2 – 850mb Temperature
The 850mb temperature anomaly map (Nº1) illustrates the temperature anomalies using different colors on the map (Nº2) compared to historical data. Figure 6.3.2A below shows how the anomaly map is presented on the platform.
Figure 6.3.2A – 850mb Temperature Map
Hovering the mouse over the map displays the different temperature anomaly values at 850mb (Nº3) compared to the historical values of the region. If preferred, the map values can be compared to the legend (Nº4) located in the bottom left corner of the screen. The time selector bar (Nº5) shows the different available dates for checking anomaly forecasts for the given region. If the user needs to adjust the image’s zoom on the screen, they can use the pre-set Zoom options bar (Nº6) located in the top right corner of the screen.
6.3.3 – Precipitation
The precipitation anomaly map (Nº1) illustrates the variations in precipitation anomalies using different colors on the map (Nº2) compared to historical data. Figure 6.3.3A below shows how the anomaly map is presented on the platform.
Figure 6.3.3A – Precipitation Map
Hovering the mouse over the precipitation anomaly map presents the different precipitation values (Nº3) when compared to historical values for the region. If preferred, the map values can be compared to the legend (Nº4) located in the bottom left corner of the screen. The time selector bar (Nº5) shows the different dates available for viewing anomaly forecasts for the given region. If the user needs to adjust the zoom on the screen, they can use the pre-set Zoom options bar (Nº6) located in the upper right corner of the screen.
6.3.4 – Evapotranspiration
The evapotranspiration anomaly map (Nº1) illustrates different evapotranspiration anomalies using various colors on the map (Nº2) compared to historical data. Figure 6.3.4A below shows how the anomaly map is presented on the platform.
Figure 6.3.4A – Evapotranspiration Map
Hovering the mouse over the evapotranspiration anomaly map presents the different expected evapotranspiration values (Nº3) when compared to historical values for the region. If preferred, the map values can be compared to the legend (Nº4) located in the bottom left corner of the screen. The time selector bar (Nº5) shows the different dates available for viewing anomaly forecasts for the given region. If the user needs to adjust the zoom on the screen, they can use the pre-set Zoom options bar (Nº6) located in the upper right corner of the screen.
6.3.5 – Sea Level Pressure
The sea level pressure anomaly map (Nº1) illustrates different pressure anomalies using various colors on the map (Nº2) compared to historical data. Figure 6.3.5A below shows how the anomaly map is presented on the platform.
Figure 6.3.5A – Sea Level Pressure Map
Hovering the mouse over the sea level pressure anomaly map presents the different expected pressure values (Nº3) when compared to historical values for the region. If preferred, the map values can be compared to the legend (Nº4) located in the bottom left corner of the screen. The time selector bar (Nº5) shows the different dates available for viewing anomaly forecasts for the given region. If the user needs to adjust the zoom on the screen, they can use the pre-set Zoom options bar (Nº6) located in the upper right corner of the screen.
6.3.6 – Wind Speed
The wind speed anomaly map (Nº1) illustrates different wind speed anomalies using various colors on the map (Nº2) compared to historical data. Figure 6.3.6A below shows how the anomaly map is presented on the platform.
Figure 6.3.6A – Wind Speed Map
Hovering the mouse over the wind speed anomaly map presents the different expected wind speed values (Nº3) when compared to historical values for the region. If preferred, the map values can be compared to the legend (Nº4) located in the bottom left corner of the screen. The time selector bar (Nº5) shows the different dates available for viewing anomaly forecasts for the given region. If the user needs to adjust the zoom on the screen, they can use the pre-set Zoom options bar (Nº6) located in the upper right corner of the screen.
6.3.7 – El Niño
The El Niño anomaly map (Nº1) illustrates different temperature anomalies using various colors on the map (Nº2) compared to historical data. Figure 6.3.7A below shows how the anomaly map is presented on the platform.
Figure 6.3.7A – El Niño Map
Hovering the mouse over the El Niño anomaly map presents the different temperature values (Nº3) when compared to historical values for the region due to the occurrence of the El Niño phenomenon. If preferred, the map values can be compared to the legend (Nº4) located in the bottom left corner of the screen. The time selector bar (Nº5) shows the different dates available for viewing anomaly forecasts for the given region. If the user needs to adjust the zoom on the screen, they can use the pre-set Zoom options bar (No. 6) located in the upper right corner of the screen.