Sentences with phrase «change in instrumentation»

All differ slightly because they use slightly different data sets and have their own ways of adjusting for relocations of weather stations and changes in instrumentation over time.

• the inherent difficulties in correcting for changes in instrumentation and in the siting of radiosonde and surface stations.

However I also understood that trends determined from raw data can suffer from changes in instrumentation and / or changes in location.

F. Onto the graphs downloaded on January 10 from the USHCN, I superimposed changes in instrumentation (designated by the vertical red lines) and changes in location (designated by the blue arrows).

The answer to this lies in how the different datasets deal with having little or no data in remote parts of the world, measurement errors, changes in instrumentation over time and other factors that make capturing global temperature a less - than - straightforward task.

Temperature adjustments such as those resulting from change in instrumentation are, of course, necessary.

Onto the graphs downloaded on January 10 from the USHCN, I superimposed changes in instrumentation (designated by the vertical red lines) and changes in location (designated by the blue arrows).

Secondly, I expect that the changes in instrumentation, inaccuracy of a single Secchi - depth - to - chlorophyll conversion, and variation in sampling effort prevent identification of trends over the last century.

In the paper1, the authors used data from weather stations around the world; those in China «were selected on the basis of station history: we chose those with few, if any, changes in instrumentation, location or observation times», they wrote.

The processing of these observations is straightforward, but large gaps in spatial coverage compromise the reliability of global averages, and changes in instrumentation can give rise to spurious trends.

Many meteorological organisations keep quite detailed station history files, and keep track of any reported station relocations, modifications to the surroundings or changes in instrumentation or measuring techniques.

Changes in instrumentation and data availability have caused time - varying biases in estimates of global - and regional - average sea - surface temperature.

Lots of factors make measuring global temperature a difficult task, such as sparse data in remote places, random measurement errors and changes in instrumentation over time.

... Owing to changes in instrumentation, observing environment and procedure, SSTs measured from modern ships and buoys are not consistent with those measured before the early 1940s using canvas or wooden buckets.

Wherever there are documented changes to a weather station such as a change in instrumentation, then an adjustment is justified.

However after 1980, due to changes in instrumentation, it is not clear how much of the exaggerated rising trend is due to climatic factors (natural or CO2) or the result of a warming bias caused by new instruments.

Changes in instrumentation and protocols pervade both sonde and satellite records, obfuscating the modest long - term trends.

A station could be selected if either it had relatively few «changes in instrumentation» OR «changes in location» OR «changes in observation times».

A sudden shift in the town's temperature relationship with its neighbours is more likely to be related to non-climate factors such as a change in instrumentation.

Where Jones et al said «selected stations have relatively few, if any, changes in instrumentation, location, or observation times» this was probably conjunctive usage, equivalent to «and».

``... station histories: selected stations have relatively few, if any, changes in instrumentation, location, or observation times» [THIS IS ITEM «X»]

«Where possible, stations were chosen on the basis of station histories and / or local knowledge: selected stations have relatively few, if any, changes in instrumentation, location, or observation times»