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of the properties of convective clouds have been made by international field studies, such BOMEX, RICO, TOGA-COARE and TWP-ICE. But it is challenging to get enough detail from these data to study the small-scale processes often responsible for initiating convection. Further insight can be gained
Convection WG Overview Model Issues Timing of convective initiation Spatial structure of convection Methods Robustness Rainfall amounts Elevated Convection Observations Rain (radar + satellite) Profiles (aircraft + sondes) Cloud (radar + satellite) Amounts, distribution, cell statistics etc
) - - Integrated Diffuse Downward SW radiation kJ/m2 Hourly to T+360 (6) - - Instantaneous SW is the power (per unit area); integrated SW is the energy (per unit area) over the previous hour, commonly expressed as kWh (1kWh = 3600kJ) Cloud Cloud Amount < 200feet oktas Hourly to T+360 - - Low cloud amount
who adopt a more conservative approach. Unlike the SQI more than one category threshold is used by the GSS (see table 1). The Met Office assess all the TAF cloud base and visibility categories defined by ICAO. At the time of writing, the following categories are used for TAF assessment: Surface
those who adopt a more conservative approach. Unlike the SQI more than one category threshold is used by the GSS (see table 1). The Met Office assess all the TAF cloud base and visibility categories defined by ICAO. At the time of writing, the following categories are used for TAF assessment: Surface
to be a cycling instructor - so I’m often out and about. Since getting more into photography, I also tend to use those activities as an opportunity to take photographs. I can spend an hour or more waiting for the sky to change to capture sunsets and sunrises, different cloud formations and for colours to emerge
who adopt a more conservative approach. Unlike the SQI more than one category threshold is used by the GSS (see table 1). The Met Office assess all the TAF cloud base and visibility categories defined by ICAO. At the time of writing, the following categories are used for TAF assessment: Surface
those who adopt a more conservative approach. Unlike the SQI more than one category threshold is used by the GSS (see table 1). The Met Office assess all the TAF cloud base and visibility categories defined by ICAO. At the time of writing, the following categories are used for TAF assessment: Surface
. The lightning information from LEELA is delivered in Met Office bulletins, 24 hours a day, 365 days a year. LEELA is more sensitive to cloud to ground lightning than in-cloud lightning and does not discriminate between these different forms of lightning in its bulletins. Resolution: Although LEELA
some locations may not fall below 18-20°C. Outlook for Friday Friday will continue the trend of warm and settled weather. Most areas will remain dry with sunny or clear spells, although medium to high-level cloud may persist for a time, particularly during the morning, reducing solar input
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