7 research outputs found
The GNSS for Meteorology (G4M) Procedure and Its Application to Four Significant Weather Events
The authors conceived the GNSS for Meteorology (G4M) procedure to remote-sense the Precipitable Water Vapor (PWV) content in atmosphere with the aim to detect severe meteorological phenomena. It can be applied over an orographically complex area, exploiting existing networks of Global Navigation Satellite System (GNSS) Permanent Stations (PSs) and spread meteorological sensors, not necessarily co-located. The results of a posteriori analysis of four significant meteorological events are here presented, also in comparison with rain gauge data, to show the effectiveness of the method. The potentiality of G4M to detect and locate in space and time intense rainfall events is highlighted. The upcoming application of G4M in near-real time could provide a valuable support to existing Decision Support System for meteorological alerts
Recommended from our members
The amazon dense gnss meteorological network a new approach for examining water vapor and deep convection interactions in the tropics
The Amazon Dense Global Navigational Satellite System (GNSS) Meteorological Network ((ADGMN) provides high spatiotemporal resolution, all-weather precipitable water vapor for studying the evolution of continental tropical and sea-breeze convective regimes of Amazonia. The ADGMN campaign consisted of two experiments: a 6-week campaign in and around Belem, which coincided with the Cloud Processes of the Main Precipitation Systems in Brazil: A Contribution to Cloud-Resolving Modeling and to the Global Precipitation Measurement (CHUVA) and a 1-yr campaign in and around Manaus. The Belem network was composed of 15 GNSS/meteorological stations that provided high-frequency (5 min) PWV data as well as surface meteorological variables For the 6-week duration of the Belem experiment, days were categorized as convective (22 days) or nonconvective (19 days) based solely on a minimum cloud-top temperature of 240 K or below over the central portion of the network and a report of precipitation at at least one site during the afternoon or evening. The Manaus network commenced in April 2011 with 12 GNSS meteorological stations. Local circulations in Manaus driven by anthropogenic deforestation have, in particular, received attention
Recommended from our members
The amazon dense gnss meteorological network a new approach for examining water vapor and deep convection interactions in the tropics
The Amazon Dense Global Navigational Satellite System (GNSS) Meteorological Network ((ADGMN) provides high spatiotemporal resolution, all-weather precipitable water vapor for studying the evolution of continental tropical and sea-breeze convective regimes of Amazonia. The ADGMN campaign consisted of two experiments: a 6-week campaign in and around Belem, which coincided with the Cloud Processes of the Main Precipitation Systems in Brazil: A Contribution to Cloud-Resolving Modeling and to the Global Precipitation Measurement (CHUVA) and a 1-yr campaign in and around Manaus. The Belem network was composed of 15 GNSS/meteorological stations that provided high-frequency (5 min) PWV data as well as surface meteorological variables For the 6-week duration of the Belem experiment, days were categorized as convective (22 days) or nonconvective (19 days) based solely on a minimum cloud-top temperature of 240 K or below over the central portion of the network and a report of precipitation at at least one site during the afternoon or evening. The Manaus network commenced in April 2011 with 12 GNSS meteorological stations. Local circulations in Manaus driven by anthropogenic deforestation have, in particular, received attention
Tracking Hurricanes using GPS atmospheric precipitable water vapor field
Tropical cyclones are one of the most powerful
severe weather events that produce devastating socioeconomic
and environmental impacts in the areas they strike. Therefore,
monitoring and tracking of the arrival times and path
of the tropical cyclones are extremely valuable in providing
early warning to the public and governments. Hurricane
Florence struck the East cost of USA in 2018 and offers
an outstanding case study. We employed Global Positioning
System (GPS) derived precipitable water vapor (PWV)
data to track and investigate the characteristics of storm occurrences
in their spatial and temporal distribution using a
dense ground network of permanent GPS stations. Our findings
indicate that a rise in GPS-derived PWV occurred several
hours before Florence’s manifestation. Also, we compared
the temporal distribution of the GPS-derived PWV
content with the precipitation value for days when the storm
appeared in the area under influence. The study will contribute
to quantitative assessment of the complementary GPS
tropospheric products in hurricane monitoring and tracking
using GPS-derived water vapor evolution from a dense network
of permanent GPS station