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for results at 250hPa (which equates to FL340), over the Northern Hemisphere (90N-20N). The graphs below display the accuracy of these two forecasts, with the smaller the error being a better value forecast to airline operators. Performance measure: ≤ 2.85m/s for Wind and ≤ 0.56K for Temperature (based

of 2018. Weather, 74: 390- 396. https://doi.org/10.1002/wea.3628 Murphy JM, Harris GR, Sexton DMH, Kendon EJ, Bett PE, Clark RT, Eagle KE, Fosser G, Fung F, Lowe JA, McDonald RE, McInnes RN, McSweeney CF, Mitchell JFB, Rostron JW, Thornton HE, Tucker S, Yamazaki K. (2019) UKCP18 Land Projections

information for any warnings by omission of missing timesteps. The metadata header will only expose the timesteps that have been generated successfully, therefore if a timestep/s is missing then it should be concluded that they have failed to be generated for that time/s

value forecast to airline operators. Performance measure: ≤ 2.85m/s for Wind and ≤ 0.56K for Temperature (based on 12-month mean values) Root Mean Square Vector Error 4.00 3.80 3.60 3.40 3.20 3.00 2.80 Northern Hemisphere T+24 Wind (m/s) at 250hPa Monthly Rolling 12-month mean Target Latest value

of the UK annual mean temperature anomaly for 2026, relative to a baseline period of 1901 – 1930, was 1.95°C, compared to 2022’s anomaly of 1.88°C. It is clear just from the time series in Figure 3 that this new annual record is not extreme in the current climate, and that considerably higher annual mean

D, Bett PE, Bricheno L, Brown S, Calvert D, Clark RT, Eagle KE, Edwards T, Fosser G, Fung F, Gohar L, Good P, Gregory J, Harris GR, Howard T, Kaye N, Kendon EJ, Krijnen J, Maisey P, McDonald RE, McInnes RN, McSweeney CF, Mitchell JFB, Murphy JM, Palmer M, Roberts C, Rostron JW, Sexton DMH, Thornton

desired product. Implementation outside the scope of UKCP18. References Borgomeo, E., Pflug, G., Hall, J.W, Hochrainer-Stigler, S. (2015). Assessing water resource system vulnerability to unprecedented hydrological drought using copulas to characterize drought duration and deficit, Water Resour

on the horizon or, when in bands cross the whole sky, towards two opposite points on the horizon, called ‘radiation point(s)’. This term applies mainly to stratocumulus, cumulus, altocumulus, altostratus and cirrus clouds. Vertebratus (ve) – clouds whose filaments are arranged in a manner suggestive of vertebrae

research cruise at 32°S in the Indian Ocean, where he gained 'hands on' experience of collecting ocean observations and deploying Argo floats. Since joining the Met Office in 2005, Matt's work has focused on understanding ocean heat content change using both observational analyses and climate model