J 2019

Addressing the relocation bias in a long temperature record by means of land cover assessment

KNERR, Isabel, Manuel DIENST, Jenny LINDEN, Petr DOBROVOLNÝ, Jan GELETIČ et. al.

Basic information

Original name

Addressing the relocation bias in a long temperature record by means of land cover assessment

Authors

KNERR, Isabel (276 Germany, guarantor), Manuel DIENST (276 Germany), Jenny LINDEN (752 Sweden), Petr DOBROVOLNÝ (203 Czech Republic, belonging to the institution), Jan GELETIČ (203 Czech Republic), Ulf BÜNTGEN (276 Germany, belonging to the institution) and Jan ESPER (276 Germany)

Edition

Theoretical and Applied Climatology, Wien, Springer Wien, 2019, 0177-798X

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10509 Meteorology and atmospheric sciences

Country of publisher

Austria

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 2.882

RIV identification code

RIV/00216224:14310/19:00107722

Organization unit

Faculty of Science

UT WoS

000477054700085

Keywords in English

urban heat island; precipitation; air temperature; land cover; homogenization; vegetation; impact

Tags

Tags

Reviewed
Změněno: 29/4/2020 11:21, Mgr. Marie Šípková, DiS.

Abstract

V originále

The meteorological measurements in Brno, Czech Republic, is among the world's oldest measurements, operating since 1799. Like many others, station was initially installed in the city center, relocated several times, and currently operates at an airport outside the city. These geographical changes potentially bias the temperature record due to different station surroundings and varying degrees of urban heat island effects. Here, we assess the influence of land cover on spatial temperature variations in Brno, capitol of Moravia and the second largest city of the Czech Republic. We therefore use a unique dataset of half-hourly resolved measurements from 11 stations spanning a period of more than 3.5years and apply this information to reduce relocation biases in the long-term temperature record from 1799 to the present. Regression analysis reveals a significant warming influence from nearby buildings and a cooling influence from vegetation, explaining up to 80% of the spatial variability within our network. The influence is strongest during the warm season and for land cover changes between 300 and 500m around stations. Relying on historical maps and recent satellite data, it was possible to capture the building densities surrounding the past locations of the meteorological station. Using the previously established land cover-temperature relation, the anthropogenic warming for each measurement site could be quantified and hence eliminated from the temperature record accordingly, thereby increasing the long-term warming trend.

Links

GA205/09/1297, research and development project
Name: Víceúrovňová analýza městského a příměstského klimatu na příkladu středně velkých měst
Investor: Czech Science Foundation, Multilevel analysis of the urban and suburban climate taking medium-sized towns as an example