Soil moisture anomaly : the difference between the historical normal soil moisture deficit (or surplus) for a given time of year and actual soil moisture deficits. See the table below for more detail. Maps of some variables, for example sunshine hours, are based on fewer recording sites than others, for example rainfall. Regions experiencing significant soil moisture deficits are deemed “hotspots”. When the soil store is full, it is assumed to be saturated and the excess rainfall becomes surface runoff. Soil Moisture Clim; Soil Wetness Clim; Evaporation Precipitation Runoff Temperature Summary Recent Anomalies OUTLOOK: About Us Our Mission Who We Are Contact Us CPC Information CPC Web Team : HOME >Land Surface Monitoring and Prediction: Soil Moisture (mm) Move cursor over product parameter name to display the graphic. All NIWA stations from the mid-north down are recording soil moisture deficits from 108-125mm, well below the average for this time of the year. Soil moisture anomaly : the difference between the historical normal soil moisture deficit (or surplus) for a given time of year and actual soil moisture deficits. A weekly update describing soil moisture patterns across the country to show where dry to extremely dry conditions are occurring or imminent. Number of days with soil moisture deficit. Climate records held by the National Institute of Water and Atmospheric Research (Niwa) show it was the sixth driest April since weather data started being recorded here in 1905. Soil moisture deficit: the amount of water needed to bring the soil moisture content back to field capacity, which is the maximum amount of water the soil can hold. Gerard Hutching 11:06, Mar 29 2017. Source: NIWA – National Institute of Water and Atmospheric Research. NIWA has projected 75% chance of average to below average rainfall with an 80% chance of average to below average river flows and soil moisture levels until December 2018. The index, called the New Zealand Drought Index (NZDI), is a climate data-based indicator of drought based on four commonly-used climatological drought indicators: the Standardised Precipitation Index, the Soil Moisture Deficit, the Soil Moisture Deficit Anomaly, and the Potential Evapotranspiration Deficit. Niwa forecaster Nava Fedaeff said soil moisture was lower than normal for this time of year, particularly in Northland, Auckland, north Waikato and Coromandel. Definition: Climate station data of the number of days in soil moisture deficit from around New Zealand was sourced from NIWA. The model keeps track of the soil store for each timestep. Soil moisture deficit: the amount of water needed to bring the soil moisture content back to field capacity, which is the maximum amount of water the soil can hold.

Soil moisture deficit: the amount of water needed to bring the soil moisture content back to field capacity, which is the maximum amount of water the soil can hold. Soil moisture deficit: the amount of water needed to bring the soil moisture content back to field capacity, which is the maximum amount of water the soil can hold. The daily mean soil temperatures at Dargaville and Warkworth have spiked up late November 2017, running at 4-5 degrees warmer than expected. Rainfall is assumed to infiltrate into a soil store from which moisture is depleted by evapotranspiration loss.

Soil moisture anomaly : the difference between the historical normal soil moisture deficit (or surplus) for a given time of year and actual soil moisture deficits.

The analysis is done for an average soil type where the available water capacity is taken to be 150 mm. Total: Anomaly: Percentile: Change: Daily: Monthly : Last Day … 1983/84 is an example of a wet growing season, with much of New Zealand having a potential evapotranspiration deficit (PED) of less than 100mm.