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IOM Report, 102. CIMO Survey on national summaries of methods and instruments for solid precipitation measurement at automatic weather stations
This publication reports on the results of the CIMO survey, initiated in 2008, on the current methods, instruments and challenges for the measurement of solid precipitation at automatic weather stations. The current survey is the third in its category. It was built on the two previous surveys that were conducted by CIMO 10 and 20 years ago. Since then, the automatic stations have been providing an increased percentage of precipitation data, snow water equivalent, and depth of snow on the ground. The CIMO, at its 14th session, initiated this review to assess the methods for measurement and obse ...
Verification of the TIGGE and WRF Models in forecasting the precipitation event for 3rd February 2010 over Zambia
Nkonde Edson - NOAA, 2010In this case study, attempt was made to verify the performances of the TIGGE and WRF models in simulating rainfall over southern Africa for the period from 1st November 2009 to 10th February 2010, with 24 and 48 hrs lead time. We have tested the skills of the models in forecasting heavy rainfall event, in excess of 40mm per day. Special emphasis was given to rainfall event that occurred on the 3rd of February 2010 over Zambia. The associated atmospheric conditions prior and during the rainfall event were also analyzed, both in analysis and forecasted fields.
Over Southern Africa, all th ...
IOM Report, 99. WMO Field Intercomparison of Rainfall Intensity Gauges
The WMO Field Intercomparison of Rainfall Intensity Gauges was carried out in Vigna di Valle, Italy from October 2007 to April 2009, at the kind invitation of the Italian Meteorological Service. This intercomparison is following up on the Laboratory Intercomparison of Rainfall Intensity Gauges. CIMOXIV recommended that welldefined and accepted reference instruments and procedures were needed for the field intercomparison. CIMOXIV agreed that such reference might be based on a set of high quality devices applying different measuring techniques and had adopted a recommendation to that effect. Th ...
Understanding the predictabilty and seasonal rainfall variability patterns during OND and JFM over DRCongo
The objective of this work is thus to enhance an understanding on the regional and global patterns that may contribute to the knowledge of the variability and predictability of OND and JFM rains season over DRC for a better prediction of the rains season and also to improve the DRC seasonal models for a better decisions makers, and also assist potentials users on their needs.
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WCRP, 128. Assessment of global precipitation products : a project of the World Climate Research Programme Global Energy and Water Cycle Experiment (GEWEX) Radiation Panel
World Meteorological Organization (WMO) ; Levizzani Vincenzo; United Nations Educational, Scientific and Cultural Organization (UNESCO); et al. - WMO, 2008 (WMO/TD-No. 1430)This report is a synthesis of the current state of knowledge in measurements of global precipitation, a major component of the global water and energy cycle that influences significantly the Earth’s climate system, and in turn is affected by the climate system variability and change. It is a comprehensive assessment of the current global precipitation data records which have been assembled by combining observations from space-based and in situ measurements. These long-term records include observations over the land and oceans for a period of 25 years. The report describes in detail how these p ...
Towards improved seasonal rainfall forecast over Malawi : research report for WMO Class II 2005 to 2006
World Meteorological Organization (WMO) ; Institute for Meteorological Training and Research (IMTR) - IMTR, 2006Extreme climate events such as floods and droughts have devastating socio-economic impacts associated with food shortages, famine, lack of energy, water, shelter and other major basic needs. Because these events are recurrent in nature, effective, accurate and timely prediction and early warning of these events can enable Governments and other stakeholders to put into motion appropriate actions for mitigating or alleviating their adverse impacts. In this study, the relationship between seasonal rainfall and global Sea Surface Temperature anomalies was examined. The analysis was based primarily ...
IOM Report, 84. The WMO Laboratory Intercomparison of Rainfall Intensity Gauges: final report
World Meteorological Organization (WMO) ; Leroy Michel; Alexandropoulos C.; et al. - WMO, 2006 (WMO/TD-No. 1304)
PCT, 42. Técnicas de satélite para estimar la cantidad de lluvia asociada a los ciclones tropicales
OMM, 1999 (OMM/DT (ES)-No. 975)
WCRP, 81. Analysis methods of precipitation on a global scale : report of a GEWEX Workshop
World Meteorological Organization (WMO) ; Intergovernmental Oceanographic Commission (IOC) - WMO, 1993 (WMO/TD-No. 558)
WCRP, 60. The Global Precipitation Climatology Project : report of the fifth session of the International Working Group on Data Management
Global Precipitation Climatology Project ; World Meteorological Organization (WMO) - WMO, 1991 (WMO/TD-No. 436)
IOM Report, 39. Catalogue of national standard precipitation gauges
The present report contains tables with information on the national standard PGs of the WMO Members, including cross-sections of PGs, a brief review of the problems of accuracy of precipitation measurement. and of the results of wind tunnel tests regarding aerodynamical characteristics of PGs and correction procedures of the wind-induced error, wetting and evaporation.
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