Get precise, timely rainfall measurements for enhanced flood warnings and more accurate hydrological models. Gauge-Adjusted Radar Rainfall (GARR) combines rain gauge and weather radar data for superior accuracy over standalone systems.
More accurately characterizes rainfall by providing a rainfall measurement between rain gauges.
Unique quality controlled, spatially- and temporally-varied approach.
Receive hyperlocal rainfall data when rain gauges fail or during radar outages.
HIGHEST ACCURACY
Rainfall is variable in both time and space and can be difficult to accurately measure. By uniquely combining rain gauge and weather radar data, Gauge-Adjusted Radar Rainfall (GARR) provides a more accurate rainfall measurement than either system can produce alone.
DATA QUALItY
AEM’s GARR is produced using a unique quality controlled, spatially- and temporally-varied approach that better represents rainfall quantity, location, and timing from sewer catchments to river basins and more. Quality, accurate data is is required to inform critical decision-making for real-time and predictive rainfall applications, such as emergency flooding response or active real-time control.
GARR combines the precision of rain gauges with the extensive coverage of radar to deliver accurate, real-time rainfall data across large regions. By merging these two sources, GARR minimizes errors in rainfall measurements, helping organizations make informed decisions during flood events and other weather-related incidents.
GARR provides high-resolution rainfall measurements, offering data that updates every five minutes. This timeliness is crucial for flood early warning systems, allowing cities like Raleigh, North Carolina to proactively anticipate and respond to flash floods. With GARR, emergency managers can monitor rainfall across entire regions, ensuring that they have the visibility and predictive capabilities to mitigate flood risks.
GARR is versatile and can be used in a variety of fields, including: Regulatory reporting and forensic analysis, flood early warning systems, watershed and stormwater management, emergency operations response, agricultural water management, environmental impact assessments, and sewer collection system monitoring.
While rain gauges provide localized readings and radar offers broader coverage, neither can fully capture the spatial and temporal variability of rainfall. GARR merges these two data streams, reducing blind spots and ensuring accurate rainfall measurements even in areas with sparse rain gauges. This combined approach also helps predict the impact of rainfall on flooding, making it an essential tool for real-time flood monitoring.
GARR can monitor rain gauge performance, alerting you when maintenance is required. Additionally, it supports regulatory reporting by providing historical rainfall data and ensuring compliance with rainfall measurement standards through bias correction algorithms and quality control mechanisms.
