This site provides useful practical information related to global and national weather observing practices and instruments, including independent equipment reviews.
You will find much of the background in my book The Weather Observer’s Handbook (published by Cambridge University Press), details of which can also be found on this site, together with useful links and downloads.
Author, The Weather Observer’s Handbook
A nation obsessed with the weather? Yes, certainly, but which nation?
Tip of The Day
The units of atmospheric pressure are hectopascals (hPa) – a hectopascal is numerically identical to the more familiar millibar. Inches of mercury are still used for some public weather communications within the United States – one inch of mercury is 33.86 hPa.
An automatic weather station (AWS) does not have to be the first rung on the weather measurement ladder. Short of funds? Not sure whether you’ll keep the records going and don’t want to spend a lot until you have given it a few months? Not sure where to start? Different options are explored in The Weather Observer’s Handbook.
Grass and earth temperatures are the most commonly observed temperature measurements, after air temperature. The lowest temperatures on a clear night will be recorded at or close to ground level. Where the surface is covered by short grass, the lowest temperatures are attained just above the tips of the grass blades. The so-called ‘grass minimum temperature’ (or ‘grass min’) is measured using a thermometer or electrical sensor freely exposed in this position. A ‘ground frost’ occurs when the grass minimum falls below 0°C.
Site metadata statements are important because they provide the essential information for any other user of the records to understand more about the location and characteristics of weather records made at any site, thereby enabling more informed use of the data to be made.
It is advisable to check and test all sensor / datalogger / software and communications thoroughly, over a period of at least a few days, before permanent hardware installation or embarking on any long-term data collection.