Navigation Links
Scientists compiled 20th century temperature data in Spain as evidence of climatic change
Date:4/11/2008

This release is available in Spanish.

This research work is the first step to confirm the existence of a temperature change. Their main goal has been to detect the signs of the Climatic Change through the temperatures in Spain, explained to SINC the researcher of the department of Applied Physics of the University of Granada and main author, Matthias Staudt.

The compilation of maximum and minimum temperature series of every month since the end of the 19th century until the beginning of the 21st century has not always been an easy task. The data, which have been collected in 45 Spanish observatories, were not homogeneous in every case. In climatology, a series of data (temporary series) is considered as homogeneous when its content reflects exclusively the climatic evolution (this is, when the different indexed factors are absent). Therefore, the researchers work has mainly consisted in removing inhomogeneous pollution in data.

According to the scientist, analysing the quality of the data which were published in November in the International Journal of Climatology- becomes, the best method to believe in the final results. Technical preparation is essential to take the second step and do research into the rise of temperature at an unquestionable statistical level, he added.

Data homogeneization

Changing a thermometer which has been calibrated in a different way is one of the factors why temperature data usually present incoherencies. In addition, the different reading interpretations of a human being or the frequent location changes of the observatories (changes from a urban environment to an airport, altitude changes, etc.) are problems with which the scientific team has had to deal with.

Moving a thermometer without recording this fact gives rise to a very strange result which can not be explained 50 years later, explained Staudt. Besides this, there are human typographical errors which present non-homogeneous data.

Scientists have been working for five years to find out, evaluate and repair the data series. In order to make them as reliable as possible without converting them into a pretext for those reluctant to admit the existence of the Climatic Change, explained the researcher. Although he admits that he has not obtained absolute conclusions, he has managed to establish a normality criterion in the behaviour of temperatures. With a high level of probability, a qualitative decrease of seven degrees from April to May is not normal, as there should be a rise in any case, he said.

Due to the homogeneization problems specified in the analysed monthly series, the researchers have set themselves a very strict detection of un-homogeneities criterion. Despite this, the instrumental error in a temperature measurement is in the order of 0.1C, and the error of a difference between data, previously treated with the homogeneization method, rises to the order of 0.4C. This error is not negligible but anyway it is considerably smaller than the gross data.

To come to conclusions that confirm climatic change in Spain, at a high level of reliability, this technical work involves a necessary and obvious effort. Staudt said that the results obtained about the Climatic Change are not new, but they will confirm what we (almost) already knew.


'/>"/>

Contact: Antonio Marn
amarin@ugr.es
34-958-242-935
Universidad de Granada
Source:Eurekalert

Related biology news :

1. Atmospheric scientists gear up for collaborative airborne campaigns
2. AMNH scientists grace Science & Nature covers
3. Scientists uncover the potential to control adult stem cells
4. Scientists ask whether microscaffolding can help stem cells rebuild brain after stroke damage
5. Scientists find a fingerprint of evolution across the human genome
6. Death protein research secures funding for UCF scientists
7. Yale scientists visualize the machinery of mRNA splicing
8. Cold Spring Harbor Laboratory scientists devise potential approach to treat spinal muscular atrophy
9. Scientists discover 356 animal inclusions trapped in 100 million years old opaque amber
10. Great Ape Trust to gather internationally recognized scientists for Decade of the Mind III
11. CSHL scientists part of team that discovers role of rare gene mutations in schizophrenia
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/15/2016)... , June 15, 2016 ... market report titled "Gesture Recognition Market by Application Market - Global ... 2016 - 2024". According to the report, the  global ... billion in 2015 and is estimated to grow ... 48.56 billion by 2024.  Increasing application ...
(Date:6/7/2016)... , June 7, 2016  Syngrafii Inc. ... a business relationship that includes integrating Syngrafii,s patented ... branch project. This collaboration will result in greater ... the credit union, while maintaining existing document workflow ... http://photos.prnewswire.com/prnh/20160606/375871LOGO ...
(Date:6/2/2016)... 2016   The Weather Company , an IBM Business ... industry-first capability in which consumers will be able to interact ... questions via voice or text and receive relevant information about ... Marketers have long sought an advertising solution that can ... personal, relevant and valuable; and can scale across millions of ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... 23, 2016 /PRNewswire/ - FACIT has announced the ... biotechnology company, Propellon Therapeutics Inc. ("Propellon" or ... of a portfolio of first-in-class WDR5 inhibitors for ... as WDR5 represent an exciting class of therapies, ... medicine for cancer patients. Substantial advances have been ...
(Date:6/23/2016)... 23, 2016  The Prostate Cancer Foundation (PCF) is pleased to ... faster cures for prostate cancer. Members of the Class of 2016 were selected ... Read More About the Class of 2016 PCF Young Investigators ... ... ...
(Date:6/23/2016)... ... June 23, 2016 , ... STACS DNA Inc., the sample tracking ... Arkansas State Crime Laboratory, has joined STACS DNA as a Field Application Specialist. ... Jocelyn Tremblay, President and COO of STACS DNA. “In further expanding our capacity as ...
(Date:6/23/2016)... 2016 Andrew D ... http://doi.org/10.17925/OHR.2016.12.01.22 Published recently in ... from touchONCOLOGY, Andrew D Zelenetz , discusses ... care is placing an increasing burden on healthcare ... therapies. With the patents on many biologics expiring, ...
Breaking Biology Technology: