The small number
of weather stations in the region with complete records since 1979 also indicates predominantly below - average temperatures over the past year.
The
number of weather stations recording very warm night - time temperatures and the frequency with which these occur has increased since the mid 1970s.
The only role of national governments is to provide an adequate
network of weather stations gathering a wider range of standardized data, which they make available to anyone.
According to me, on a
sample of weather stations, balanced to zero latitude, I get that earth started cooling down around the change of the new millennium.
As we will discuss later,
most of the weather stations with records stretching back to the late - 19th century (or earlier) are urban stations.
Combining the greater
share of weather stations in more urban areas over time with this urban heat effect also tends to increase the rate that recorded temperatures tend to rise over time.
Because the locations and measurement
practices of weather stations change over time, there are uncertainties in the interpretation of specific year - to - year global mean temperature differences.
The catalogue includes current
details of each weather station and a history of observations at the location, including record length and relevant metadata.
Temperature data from tens of thousands
of weather stations across the globe, many of which have incomplete records, are «very contentious,» Muller said in an interview.
The raw data, collected from hundreds
of weather stations around the world and analysed by his unit, has been used for years to bolster efforts by the United Nation's Intergovernmental Panel on Climate Change to press governments to cut carbon dioxide emissions.
However, as we will discuss in this essay,
many of the weather station records used for these estimates of global warming contain artificial warming biases, which are not representative of actual global temperatures.
Anyone who want's raw data from
hundreds of weather stations monitored by the Australian Bureau of Meteorology, NOAA etc only has to go to the websites.
[6] Across California, 68
percent of weather station located between 2,000 and 5,000 feet registered a lower percentage of winter precipitation falling as snow, according to 65 years of winter precipitation data.
The trouble is that while there are plenty
of weather stations on land, there are some pretty big gaps over the oceans, the polar regions, and even parts of Africa and South America.
Specifically, they have included the data from the International Surface Temperature Initiative database, which more than doubles the number
of weather stations available for the analysis.
Impact of the weather stations adjustments on the global land - ocean temperature record, calculated using the Skeptical Science temperature record calculator in «CRU» mode.
, I am puzzled by your statement that «although quite a
few of the weather stations qualify as urban... the UHI effect at those stations is not enormous»
Very little of the world's surface is urban, and although quite a few
of the weather stations qualify as urban, it turns out that the urban heat island effect at those stations, while measurable, is not enormous.