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season total rainfall and seasonal average temperature have significant correlations with crop yield. With improved seasonal forecasts, there is potential to provide information on timescales relevant to agriculture and food security decisions, provided information is communicated in appropriate

northwestern areas, but many places will see a dry end to Friday and a dry start to Saturday. The next weather front will move in from the northwest, bringing a spell of very wet weather, particularly to northern and western regions. Rainfall totals are expected to build up through the weekend

of rainfall at Honister Pass, with other sites in the county exceeding 200 millimetres. North Wales and the Isle of Skye have also seen totals above 100 millimetres. This deluge has been driven by a weather front that became stuck over northwestern parts of the country. In contrast, the south and east have

to bring rain to western areas, particularly southwest England and south Wales, where the ground is already saturated. These regions could experience some further heavy rainfall totals, adding to local surface water and flooding concerns. Sunday: Cloudy and damp for many By Sunday morning, low

and into Friday, another weather system will approach from the west, bringing heavy and persistent rain to Northern Ireland and western Scotland. This rain will linger into Friday, with some heavy bursts and brisk winds helping to push the rain up over hills, increasing rainfall totals

to 60 mph, or even higher in exposed spots. Rainfall totals could reach 30 to 50 millimetres in some locations, enough to cause localised disruption. With cold air in place, there is also the potential for sleet and snow over higher ground, especially around the South Pennines. The exact extent

the potential for prolonged rainfall. Eastern Scotland is a particular concern, with southeasterly winds forcing moisture‑laden air over the hills. Rainfall totals of 60mm are expected widely, with over 100mm possible on higher ground. Warnings are already in force, and there is a risk of flooding. Elsewhere

rainfall totals this weekend are not expected to be excessive, any further wet weather could cause localised issues due to the cumulative effect of previous downpours. Rainfall patterns through the weekend Rainfall accumulation charts show that, while rainfall amounts are not especially large

Decreasing trends in total gaseous mercury observations in baseline air at Mace head, Ireland from 1996 to 2009. Accepted Atmospheric Environment, Jan 2011. Fleming, Z., P.S. Monks, A.J. Manning, Review: Untangling the influence of air-mass history in interpreting observed atmospheric composition. (2012

estimates and true emissions for NWEU in this idealised case study. The median emission total when no noise is added to the pseudo observations is excellent and the uncertainty bars are small. When noise is added to the measurements the median fit is still good but the uncertainty range is larger (solid