WP1 URV – digitization and long-series construction NMA-RO – User-oriented analysis of climate variability and change MeteoSwiss – update on extended Alpine.

WP1 URV – digitization and long-series

constructionNMA-RO – User-oriented analysis of

climate variability and changeMeteoSwiss – update on extended Alpine

precipitation datasetMF – QC of rainfall data using radar data

UEA – updating of CRUTS 3.1KNMI – surface solar irradiance

DWD -

URV-Digitisation: status and prospects.

51 Tx/Tn daily records & approximate length

A general look at the digitisation effort

2675399, 70%

790955, 21%

342370, 9%

data digitised by EURO4M

non-digital data gathered pendingdigitisationnon-digital data located but not yet accessed

A more complete view of the whole effort: temperature records

2011 2012

ORAN data sourcesEuropean Climate Assessment & Dataset (1965-2012)

ORAN data sourcesTemporal span: 1852-2012 (with major gaps in 1870s & 1940s)

ORAN stationsCap Falcon, City, Es Senia, Tafaroui

Summary

Data rescue activities. NMA-RO has used sources which were prior identified (listed in deliverable D.1.14) to rescue data at Romanian stations covering time intervals prior to 1960. Monthly bulletins issued by the Romanian Meteorological Service were used and snow data and catchment average precipitation for 17 river basins have been digitized for the interval 1921-1940 (e.g. figure 1). In addition, daily bulletins issued by the Romanian Meteorological Service (from year 1925) have been used as alternative sources to fill some gaps of digitized air pressure data for 2 stations from Northern and Eastern Mediterranean areas (Tripoli and Tanger).

Figure 1. Evolution of monthly sum of precipitation (in mm) over Siret Basin recovered for the interval 1921-1940.

Siret basin – newly rescued and digitized data for 1921-40

The precipitation climate of the Alps, as seen from an extended rain-gauge dataset

F. A. Isotta, D. Masson and C. Frei3rd April 2012

Data contributions

Austria Lebensministerium ~960

Croatia Meteorological service ~130

France Météo-France ~1500

Germany DWD ~700

ItalyRegional & national services

ARCIS (Climatological Archive for Northern Italy, www.arcis.it) and additional sources

~750

Slovenia Hidrometeorološki Zavod ~170

Switzerland MeteoSwiss ~440

Mean # stations (instantaneous)

• Domain: Lon. 2-17.5E, lat. 43-49N (including flatland & adjacent hill ranges)• Typical inter-station distance: 10 – 15 km• Daily sums (ca. 06:00-06:00), (1961-) 1971-recent

Stations (old)

Stations (new)

Spatial control of rain gauge precipitations using radar data

(Contribution to WP1)

F Mounier, P Lassègues, A-L Gibelin, J-P Céron, J-M Veysseire

Meteo-France DCLIM / CNRM-GAME

MAIN PROBLEMS of rain gauges: density, quality, instrument types

•Real-time Meteo-France (~1500-1800)

•volunteers (~2800)

Construct a 2007-2010 reference estimate of spatialized precipitation for rain gauges control and validation at fine scale.

PROPOSED SOLUTION

Use radar network in the spatialization process of the

precipitation estimate

Radar data need Radar data need also to be qualifiedalso to be qualified

UEA• Updating of CRU TS 3.1• Paper about to be submitted• Includes Potential Evapotranspiration

using Penman-Monteith formula (FAO)

• Ge Verver will talk about comparisons with ECA&D

DWD and KNMI