My GeoNetwork catalogue
Hourly station observations of 2 m air temperature and humidity for Germany
These data originate from the stations of the DWD and legally as well as qualitatively equal partner network stations. Extensive station metadata, such as station relocations, instrument changes, reference time changes, algorithm changes or operator information are included.
The dataset is divided into a versioned part with completed quality check, in the directory ./historical/.
And a part for which the quality check has not yet been completed, in the directory ./recent/.
The folder ./timeseries_overview/ contains information about long time series.
Simple
- Alternate title
-
urn:x-wmo:md:de.dwd.cdc::obsgermany-climate-hourly-air_temperature
- Date (Publication)
- 2022-04-29
- Date (Revision)
- 2022-04-29
- Edition
-
v24.03
- Edition date
- 2024-03-29
- Citation identifier
-
urn:x-wmo:md:de.dwd.cdc::obsgermany-climate-hourly-air_temperature
CDC2.1:WMO-URN CDC2.1:WMO-URN 2021
- Citation identifier
-
54
CDC2.1:DWH.PRODUCT_ID CDC2.1:DWH.PRODUCT_ID 2018
+49 (0) 69 8062-4162
www.dwd.de
- Presentation form
- Digital map
- Presentation form
- Digital table
- Status
- On going
+ 49 (0) 69 8062-4499
https://dwd.de
- Hours of service
-
09:00 - 16:00
- Maintenance and update frequency
- Daily
- Update scope
- Dataset
- Maintenance note
-
[Data maintenance]: In the directory recent/ the data files are updated daily. On a rolling basis, the data of the last 500 days - up to yesterday - are exchanged.
Quality control has not yet been completed for these data, so there may always be changes in the values.
+ 49 (0) 69 8062-4499
https://dwd.de
- Hours of service
-
09:00 - 16:00
- Maintenance and update frequency
- Annually
- Maintenance note
-
In the directory historical/ the data files are updated annually.
Quality control has been completed for this data, so that the values for the version are constant.
During the annual version change, both corrections and historical additions are incorporated.
+ 49 (0) 69 8062-4499
https://dwd.de
- Hours of service
-
09:00 - 16:00
-
DWD Climate Data Center Vocabulary - Statistische Bearbeitung
-
-
time series
-
hourly value
-
-
DWD Climate Data Center Vocabulary - Datenherkunft
-
-
station data
-
-
DWD Climate Data Center Vocabulary - Zeitliche Auflösung
-
-
hourly
-
-
DWD Climate Data Center Vocabulary - Parameterklasse
-
-
temperature
-
humidity parameters
-
-
DWD Climate Data Center Vocabulary - Vertikale Auflösung
-
-
near surface atmosphere
-
2 m above surface
-
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DWD Climate Data Center Vocabulary - Parameter
-
-
relative humidity
-
air temperature at 2 m
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GEMET - INSPIRE themes, version 1.0
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Atmosphärische Bedingungen
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Meteorologisch-geografische Kennwerte
-
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DWD Climate Data Center Vocabulary - Einheit
-
-
%
-
°C
-
-
DWD Climate Data Center Vocabulary - Geographische Region
-
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Germany
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INSPIRE - Spatial scope
-
-
National
-
- Keywords
-
-
opendata
-
- Specific usage
-
When using the "historical/" and "recent/" directories together, the temporal overlap must be taken into account and that the type of quality control differs.
For long-term stability, the information from the section Uncertainties is relevant.
- User determined limitations
- considerations
- Specific usage
-
The stations are nowadays selected and operated according to WMO guidelines. Though these guidelines aim at minimizing possible local effects, still some applications of certain parameters may require the consideration of local and regional effects. Note that when going back to historical times, such guidelines might not have been in place. Depending on the application, local, regional and influences changing with time should be considered, which can be location- and parameter specific. Sources of long-term uncertainty are (1) changes in station height when station was re-located, information on this is within the station's zip-files in Metadaten_Geographie*.
Uncertainties are also expected from (2) changes in instrumentation, see Metadaten_Geraete* and possibly also from (3) varying quality control procedures (Behrendt et al., 2011).
Further, uncertainties are known to come from (4) errors during data transfer or errors in the software, (5) change of observing personnel, and (6) others, see Freydank, 2014.
- User determined limitations
- uncertainties
- Access constraints
- Other restrictions
- Other constraints
- no Limitations
- Use constraints
- Other restrictions
- Other constraints
- The Creative Commons BY 4.0 - Licence 'CC BY 4.0' apply.
Resource constraints
- Spatial representation type
- Text, table
- Language
- Deutsch
- Topic category
-
- Climatology, meteorology, atmosphere
))
- Geographic identifier
- stations in Germany
- Begin date
- 1893-01-01
- Supplemental Information
-
For the most recent data the quality control is not completed yet. There are still issues to be discovered in the historical data. We welcome any hints to improve the data basis (see contact).
- Unique resource identifier
- EPSG:4326
- Distribution format
-
-
OpenData files (free access)
()
-
OpenData files (free access)
()
+ 49 (0) 69 8062-4499
www.dwd.de
- OnLine resource
- Behrendt, J., et al.: Beschreibung der Datenbasis des NKDZ. Version 3.5, Offenbach, 15.02.2011. ( WWW:LINK-1.0-http--link )
- OnLine resource
- Kaspar, F., et al.: Monitoring of climate change in Germany – data, products and services of Germany`s National Climate Data Centre. Adv. Sci. Res., 10, doi:10.5194/asr-10-99-2013, 99–106, 2013. ( WWW:LINK-1.0-http--link )
- OnLine resource
- Spengler, R.: The new Quality Control- and Monitoring System of the Deutscher Wetterdienst. Proceedings of the WMO Technical Conference on Meteorological and Environmental Instruments and Methods of Observation, Bratislava, 2002. ( WWW:LINK-1.0-http--link )
- OnLine resource
- DWD Vorschriften und Betriebsunterlagen Nr. 3 (VuB 3), Technikerhandbuch (THB) für Wettermeldestellen des synoptisch-klimatologischen Mess- und Beobachtungsnetzes, März 2014b. ( WWW:LINK-1.0-http--link )
- OnLine resource
- DWD Vorschriften und Betriebsunterlagen Nr. 3 (VuB 3), Beobachterhandbuch (BHB) für Wettermeldestellen des synoptisch-klimatologischen Mess- und Beobachtungsnetzes, März 2014a. ( WWW:LINK-1.0-http--link )
- OnLine resource
- DWD Vorschriften und Betriebsunterlagen Nr. 2 (VuB 2), Wetterschlüsselhandbuch Band D, Nov 2013. ( WWW:LINK-1.0-http--link )
- OnLine resource
- Freydank, E.: 150 Jahre staatliche Wetter- und Klimabeobachtungen in Sachsen. Tharandter Klimaprotokolle Band 21, 2014 ( WWW:LINK-1.0-http--link )
- OnLine resource
-
obsgermany-climate-hourly-air_temperature-historical
(
WWW:LINK-1.0-http--download
)
In the folder recent/ for each station a zip-archive is provided.
The zip-archive contains the data and meta information about the station, instruments and algorithms.
The naming schema of the zip-archives is: *_{product_code}_{station_id}_{begin_date}_{end_date}_hist.zip
- OnLine resource
-
obsgermany-climate-hourly-air_temperature-recent
(
WWW:LINK-1.0-http--download
)
In the folder recent/ for each station a zip-archive is provided.
The zip-archive contains the data and meta information about the station, instruments and algorithms.
The naming schema of the zip-archives is: *_{product_code}_{station_id}_akt.zip
- OnLine resource
-
TU_Stundenwerte_Beschreibung_Stationen
(
WWW:LINK-1.0-http--download
)
The file Datei TU_Stundenwerte_Beschreibung_Stationen.txt contains information on the recent geographical position and the temporal data coverage per station.
- OnLine resource
-
timeseries overview
(
WWW:LINK-1.0-http--download
)
In the folder ./timeseries_overview, information on long time series is available. The files provided (TimeSeries_[DataType]_[Interval]_GE_[XXXYears]_[Parameter].html or ***.txt) contain a sorted overview of stations for which time series of >=100, >=50 and >=30 years are available. Information on the proportion of missing values is also provided.
Content description
Stations_id := Identifier of the station;
Start := Start date of the time series;
End := End date of the time series;
Number_years := Number of years of measurement operation;
Missing_Years := Number of missing years of measurement operation;
Missing_values := number of missing values ;
max(Missing_period)>=25 := More than 25 years missing in the time series: Indication of start date and end date;
Station name := Station name of the current location ;
Federal state := Name of the federal state
Translated with www.DeepL.com/Translator (free version)
- Hierarchy level
- Dataset
Conformance result
- Date (Publication)
- 2010-12-08
- Pass
- Yes
Conceptual consistency
- Name of measure
- quality_estimation
Conformance result
- Explanation
-
The quality check and uncertainty assessment is explained in Kaspar et al., 2013. Different stages of quality control are run through depending on the age of the data. In addition to manual quality control, automatic tests check completeness, temporal and spatial consistency, and compare against statistical thresholds (QualiMet software, Spengler, 2002).
- Pass
- Yes
Conceptual consistency
- Name of measure
- quality_level
- Measure description
-
The QUALITAETS_NIVEAU (QN) shows the quality control procedure applied for a data report (of several parameters) for a certain reporting time.
Data before and including 1980 can reach as best quality check level QN=5. Data after 1980 can reach QN=10 as best quality check level.
Conformance result
- Explanation
-
QN = 1 : only formal control;
QN = 2 : controlled with individually defined criteria;
QN = 3 : automatic control and correction;
QN = 5 : historic, subjective procedures;
QN = 7 : second control done, before correction;
QN = 8 : quality control outside ROUTINE;
QN = 9 : not all parameters corrected;
QN = 10 : quality control finished, all corrections finished.
- Pass
- Yes
Conceptual consistency
- Name of measure
- quality_byte
- Measure description
-
The QUALITAETS_BYTE (QB) denotes whether the value was objected to and/or corrected.
Conformance result
- Explanation
-
QB = 0 : denotes not flagged,
QB = 1 : had no objections (either checked and not objected, or not checked and not objected, this can be interpreted only when considering QN);
QB = 2 : corrected;
QB = 3 : confirmed with objection rejected;
QB = 4 : added or calculated;
QB = 5 : objected;
QB = 6 : only formally checked;
QB = 7 : formal objection;
QB = -999 : quality flag does not exist.
- Pass
- Yes
- Statement
-
The data are taken from the station measuring networks of Deutscher Wetterdienst as well as its predecessor organisations.
The dataset is regularly updated with recent as well as with recovered historical data.
From 1997 onwards, the data have been imported operationally into the central specialist database and archived, see Behrendt et al., 2011, and Kaspar et al., 2013. Note that when going back to historical times, guidelines on observation procedure, instruments and observation times were issued by the authority in charge (see, e.g., Freydank, 2014), and might be incompletely recorded in the metadata of the stations.
As explained in Kaspar et al., 2013 in the early years numerous meteorological agencies were active in the area of todays Germany. After establishment of the der International Meteorological Organization (IMO) in 1873, the various standards were gradually harmonized, resulting in a single standard 1936. After 1945, the standards in East and West Germany developed differently, and were harmonized again after re-unification in 1990.
Between the end of the nineties and 2009 many stations were changed from manual to automated.
- File identifier
- urn:x-wmo:md:de.dwd.cdc::obsgermany-climate-hourly-air_temperature XML
- Metadata language
- Deutsch
- Character set
- UTF8
- Hierarchy level
- Dataset
- Date stamp
- 2024-07-27T05:42:16
- Metadata standard name
-
ISO 19115-2 Geographic information Metadata Part 2: Extensions for imagery and gridded data
- Metadata standard version
-
ISO 19115-2:2009-02-15
+49 (0) 69 8062-4162
www.dwd.de
- Dataset URI
-
urn:x-wmo:md:de.dwd.cdc::obsgermany-climate-hourly-air_temperature
Overviews
Spatial extent
Provided by
