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Workshop proceedings - Parametrization of Clouds and Precipitation across Model Resolutions
ECMWF, 2013
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Vol. 90A - February 2012 - Special issue on recent development on climate models and future climate projections
is an issue of Journal of the Meteorological Society of Japan. Meteorological Society of Japan, 2012
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64 - March 2011 - Meteorological Research Institute-Earth System Model Version 1 (MRI-ESM1) -Model Description
is an issue of 気象研究所技術報告. Yukimoto Seiji; Yoshimura H.; Hosaka Masahiro - Meteorological Research Institute, 2012
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A statistically predictive model for future monsoon failure in India
Schewe J. - IOPscience, 2012Indian summer monsoon (ISM) rainfall is the major prerequisite of agricultural productivity in the region and its variability severely affects the livelihoods of a large share of the world’s population. While average ISM rainfall has been relatively stable during the past century, rising trends have been observed in the annual number of extreme rain events. This study shows severe failure of ISM rainfall is possible but unlikely under present climatic conditions, according to a comprehensive climate model. However, monsoon failure is projected to become much more frequent over the next 200 yea ...
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JCOMM Technical Report, 68. 8th JCOMM-TCP Workshop on Storm Surge and Wave Forecasting (SSW-8): proceedings
The Eighth JCOMM-TCP Workshop on Storm Surge and Wave Forecasting (SSW-8) was held at the Institute for Meteorological Training and Research (IMTR), Nairobi, Kenya, from 19 to 23 November 2012.
This series of workshop is co-organized by the Joint WMO-IOC Technical Commission for Oceanography and Marine Meteorology (JCOMM) and the WMO Tropical Cyclone Programme (TCP), with a view to enhancing capacities of the National Hydrological and Meteorological Services (NMHSs) in providing necessary forecasting and warning services against natural marine hazards that complement b ...
Финансовые рынки стимулируют потребность в моделях климата
Оперативное прогнозирование климата завоевывает позиции в качестве самой современной, активно развивающейся области климатического обслуживания для финансового сектора.
Integración de los analistas financieros y científicos
Los planificadores nacionales están buscando inversores privados que contribuyan a financiar los planes de desarrollo basados en unas bajas emisiones de carbono.
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Dependence of the single-scattering properties of small ice crystals on idealized shape models
Atmospheric Chemistry and Physics (ACP), Vol. 11. N° 7. Um J.; McFarquhar G.M. - Copernicus GmbH, 2011The projections of small ice crystals (with maximum dimension <50 μm) appear quasi-circular when imaged by probes on aircraft flying through cloud. Therefore, idealized models constructed to calculate their single-scattering properties have included quasi-spherical models such as Chebyshev particles, Gaussian random spheres, and droxtals. Recently, an ice analogue grown from sodium fluorosilicate solution on a glass substrate, with several columns emanating from a common center of mass, was shown to be quasi-circular when imaged by state-of-the-art cloud probes. In this study, a new idealized ...
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Multi-scale modeling study of the source contributions to near-surface ozone and sulfur oxides levels over California during the ARCTAS-CARB period
Atmospheric Chemistry and Physics (ACP), Vol. 11. N° 7. Huang M.; Carmichael Gregory R.; Spak S.N.; et al. - Copernicus GmbH, 2011Chronic high surface ozone (O3) levels and the increasing sulfur oxides (SOx = SO2+SO4) ambient concentrations over South Coast (SC) and other areas of California (CA) are affected by both local emissions and long-range transport. In this paper, multi-scale tracer, full-chemistry and adjoint simulations using the STEM atmospheric chemistry model are conducted to assess the contribution of local emission sourcesto SC O3 and to evaluate the impacts of transported sulfur and local emissions on the SC sulfur budgetduring the ARCTAS-CARB experiment period in 2008. Sensitivity simulations quantify c ...
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Saharan and Asian dust: similarities and differences determined by CALIPSO, AERONET, and a coupled climate-aerosol microphysical model
This study compares the properties of atmospheric dust from the Saharan deserts and the Asian deserts using data from CALIPSO and AERONET during 2006 and 2007 along with simulations using a coupled climate-microphysical sectional model. Saharan deserts are largely south of 30° N, while Asian ones are primarily north of 30° N, hence they experience different meteorological regimes. Saharan dust lifting occurs all year long, primarily due to subtropical weather systems. However, Asian dust is lifted mostly in spring when mid-latitude frontal systems lead to high winds. Rainfall is more abundant ...
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Evaluating a 3-D transport model of atmospheric CO2 using ground-based, aircraft, and space-borne data
Atmospheric Chemistry and Physics (ACP), Vol. 11. N° 3. Feng L.; Palmer P.I.; Yang Y.; et al. - Copernicus GmbH, 2011We evaluate the GEOS-Chem atmospheric transport model (v8-02-01) of CO2 over 2003–2006, driven by GEOS-4 and GEOS-5 meteorology from the NASA Goddard Global Modeling and Assimilation Office, using surface, aircraft and space-borne concentration measurements of CO2. We use an established ensemble Kalman Filter to estimate a posteriori biospheric+biomass burning (BS + BB) and oceanic (OC) CO2 fluxes from 22 geographical regions, following the TransCom-3 protocol, using boundary layer CO2 data from a subset of GLOBALVIEW surface sites. Global annual net BS + BB + OC CO2 fluxes over 2004–2006 for ...
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Sensitivity of mesoscale model urban boundary layer meteorology to the scale of urban representation
Atmospheric Chemistry and Physics (ACP), Vol. 11. N° 3. Flagg D.D.; Taylor P.A. - Copernicus GmbH, 2011Mesoscale modeling of the urban boundary layer requires careful parameterization of the surface due to its heterogeneous morphology. Model estimated meteorological quantities, including the surface energy budget and canopy layer variables, will respond accordingly to the scale of representation. This study examines the sensitivity of the surface energy balance, canopy layer and boundary layer meteorology to the scale of urban surface representation in a real urban area (Detroit-Windsor (USA-Canada)) during several dry, cloud-free summer periods. The model used is the Weather Research and Forec ...
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Representation of tropical deep convection in atmospheric models – Part 1: Meteorology and comparison with satellite observations
Atmospheric Chemistry and Physics (ACP), Vol. 11. N° 3. Russo M.R.; Marécal V.; Hoyle C.R.; et al. - Copernicus GmbH, 2011Fast convective transport in the tropics can efficiently redistribute water vapour and pollutants up to the upper troposphere. In this study we compare tropical convection characteristics for the year 2005 in a range of atmospheric models, including numerical weather prediction (NWP) models, chemistry transport models (CTMs), and chemistry-climate models (CCMs). The model runs have been performed within the framework of the SCOUT-O3 (Stratospheric-Climate Links with Emphasis on the Upper Troposphere and Lower Stratosphere) project. The characteristics of tropical convection, such as seasonal c ...
CAWCR technical report, 39. Assessment of international seasonal rainfall forecasts for Australia and the benefit of multi-model ensembles for improving reliability
In this report we assess forecasts from Predictive Ocean Atmosphere Model for Australia (POAMA) in comparison to international dynamical coupled model forecast systems, which are archived as part of the ENSEMBLES project. We investigate how universal the lack of reliability is in dynamical forecasts of regional rainfall, in order to highlight any potential for improvement of the POAMA system. The systems assessed in this report show that overconfidence and lack of reliability for regional rainfall forecasts is a common problem. Due to the clear need for improved reliability and more accurate s ...
GAW Report, 202. Workshop on Modelling and Observing the Impacts of Dust Transport/Deposition on Marine Productivity
In this report we evaluate the state-of-art knowledge and uncertainties regarding the deposition of dust on the ocean and its mineralogical composition provided by models and measurement datasets. Global climate models were recently intercompared by Huneeus et al. (2011) using results from the AEROCOM model intercomparison. The deposition calculations from these global models are frequently used as input for biological productivity calculations. A model measurement comparison (Huneeus, 2011) shows that global models do reproduce the observed data over several orders of magnitude. However, the ...
GAW Report, 199. Tropospheric Ozone Changes : observations, state of understanding and model performances
This report presents an almost complete collection of extended abstracts of the oral and poster presentations of the second workshop on tropospheric ozone changes. For some presentations no extended abstract is included as their content has already been published in peer reviewed literature or manuscripts are under preparation. A summary of this workshop has been submitted as a newsletter article of the International Global Atmospheric Chemistry Project (IGAC, 2011). The original workshop presentations are available from the meeting web site at
Assessement of selected global models in short range forecasting over West Africa: case study of Senegal
World Meteorological Organization (WMO) ; ANAMS ; National Oceanic and Atmospheric Administration (NOAA) - WMO, 2011Severe weather events in West Africa are associated mainly with meso-scale thunderstorms and squall lines. Forecasting such severe weather to reduce the risk of hazards is one of the challenges faced by many met services. However, the recent progress in the area of numerical weather prediction has enabled some countries to forecast these events in a better way.
Due to lack of capacity, many of the West African countries were not able to use numerical weather prediction systems effectively in their day to day forecasting activities. The CPC/African Desk has been playing big role in buil ...
How trees and people can co-adapt to climate change : reducing vulnerability in multifunctional landscapes
In this section we provide a more in-depth look at the role trees play in the provision of goods and services in multifunctional landscapes. Tree growth is, however, vulnerable to climate variability, depending on the physiological properties of the tree and characteristics of the site. A further quantification of climate variability and climate change is needed to advise on what types of trees can be grown where, to be ready for the likely local climate-change during their lifetime. This leads to a discussion of the two-way relationship between climate change adaptation and rewards for enviro ...
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The impact of climate change on global tropical storm damages
This paper constructs an integrated assessment model of tropical cyclones in order to quantify the impact that climate change may have on tropical cyclone damages in countries around the world. The paper relies on a tropical cyclone generator in each ocean and several climate models to predict tropical cyclones with and without climate change. A damage model is constructed to compute the resulting damage when a cyclone strikes each country. Economic development is expected to double global tropical cyclone damages because more will be in harm's way. Climate change is expected to double global ...
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Synoptic Typing and Its Application for Evaluating Climatic Impact on Air Quality in Urumqi
Atmospheric and Oceanic Science Letters, Volume 3 Number 6. Wang Li-Li; Wang Yue-Si; Li Yuan-Yuan - Science Press, 2010An automated procedure employing principal-component analysis and a two-stage cluster analysis was developed to classify the synoptic meteorological conditions prevailing over Urumqi, one of the most heavily polluted cities in the world. Six clusters representing different circulation patterns and air-mass characteristics were classified using surface- and upper-meteorological variables during the heating period from 2001 to 2008, and the relationships between synoptic clusters and air quality were evaluated. The heaviest air-pollution episodes occurred when Urumqi was in either an extremely c ...
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Tropical Cyclone Initialization with Dynamical Retrieval from a Modified UWPBL Model
Journal of the Meteorological Society of Japan, Vol.88 No.5. Ma Lei-Ming; Tan Zhe-Min - Meteorological Society of Japan, 2010A new scheme, termed Vortex Initialization with the Assimilation of Retrieved Variables (VIRV), is presented to improve the initialization of regional numerical model for Tropical Cyclone (TC) prediction. In this scheme, the horizontal winds in Planetary Boundary Layer (PBL) and the sea level pressure (SLP), retrieved from Quick Scatterometer (QuikSCAT) data obtained using a modified University of Washington Planetary Boundary Layer (UWPBL) model, are assimilated with a cycled three-dimensional variational (3DVAR) technique to produce the initialized analysis. The procedures of retrieval are i ...
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Comparisons of Low-Level Circulation Characteristics between ECHAM5/MPI-OM Results and NCEP/NCAR Re-Analysis Data in East Asia
Atmospheric and Oceanic Science Letters, Volume 3 Number 4. Zhao De-Ming; Fu Cong-Bin - Science Press, 2010Regional climate models (RCMs) can provide far more precise information than general circulation models (GCMs). However, RCMs depend on GCM results for re-analysis products providing boundary conditions, especially for future climate scenarios. Meanwhile, the capacity of RCMs to reproduce precipitation is strongly connected to its performance on circulation and moisture transport simulations in the low troposphere, which is the key problem with RCMs at present. In the Regional Climate Model Inter-comparison Project for East Asia (RMIP III), the results of ECHAM5/MPI-OM (the European Centre-Ham ...
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Diapycnal Mixing in Transient Responses of the Atlantic Meridional Overturning Circulation in an Enhanced Freshwater Perturbation Experiment
Atmospheric and Oceanic Science Letters, Volume 3 Number 4. Yu Lei; Gao Yong-Qi; Helge Drange; et al. - Science Press, 2010It has been reported recently that the simulated Atlantic meridional overturning circulation (AMOC) using the coupled Bergen climate model (BCM) showed initial intensity declines followed by gradual recoveries over a 150-year enhanced freshwater input experiment. Stratification-dependent oceanic diapycnal mixing has been hypothesized as a reason for the simulated recovery of the AMOC. This study investigated the role of diapycnal mixing in transient responses of simulated AMOCs. Our results showed that stratification-dependent diapycnal mixing can cause stronger upwelling of deep water in the ...
Verification of NCEP-GFS model forecast versus NCEP/CPC RFE over DRCONGO from October to December 2008 : NOAA Project Report
Kalaki Kasongo Ado - NOAA, 2009Introduction: Model verification is an essential part of a Weather Prediction system. It is a helpful knowledge to enhance the forecaster’s assessment in Weather bulletin production. The aim of this study is to compare the global Forecast system (GFS) model rainfall prediction accumulated for 24 hours and averaged over October, November and December 2008 with the African Rain Fall Estimate (RFE 2.0) (Love et al.,2002) over DRCongo and the neighboring areas (from 15S to 6N latitudes and from 10E to 32E longitudes) fig.0.
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N°44 (Vol. 13, No. 1) - January 2008 - Furthering the science of ocean climate modelling
is an issue of Exchanges. International CLIVAR Project Office, 2008
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56 - November 2008 - Estimation of the Future Distribution of Sea Surface Temperature and Sea Ice Using the CMIP3 Multi-model Ensemble Mean
is an issue of 気象研究所技術報告. Mizuta Ryo; Adachi Yukimasa; Yukimoto Seiji; et al. - Meteorological Research Institute, 2008
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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 ...
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Seasonal prediction of sea surface temperatures anomalies using a suite of 13 coupled atmosphere-ocean models
Improved seasonal prediction of sea surface temperature (SST) anomalies over the global oceans is the theme of this paper. Using 13 state-of-the-art coupled global atmosphere-ocean models and 13 yr of seasonal forecasts, the performance of individual models, the ensemble mean, the bias-removed ensemble mean, and the Florida State University (FSU) superensemble are compared. A total of 23 400 seasonal forecasts based on 1-month lead times were available for this study. Evaluation metrics include both deterministic and probabilistic skill measures, such as verification of anomalies based on mode ...
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RAAOM report, 35. Research activities in atmospheric and oceanic modelling
World Meteorological Organization (WMO) ; CAS/JSC Working Group on Numerical Experimentation - WMO, 2005 (WMO/TD-No. 1276)
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RAAOM report, 34. Research activities in atmospheric and oceanic modelling
World Meteorological Organization (WMO) ; CAS/JSC Working Group on Numerical Experimentation - WMO, 2004 (WMO/TD-No. 1220)
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Technical reports in hydrology and water resources, 77. Intercomparison of forecast models for streamflow routing in large rivers
World Meteorological Organization (WMO) ; Crookshank N.L.; Willis D.H. - WMO, 2004 (WMO/TD-No. 1247)
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RAAOM report, 33. Research activities in atmospheric and oceanic modelling
World Meteorological Organization (WMO) ; CAS/JSC Working Group on Numerical Experimentation - WMO, 2003 (WMO/TD-No. 1161)
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RAAOM report, 32. Research activities in atmospheric and oceanic modelling
World Meteorological Organization (WMO) ; CAS/JSC Working Group on Numerical Experimentation - WMO, 2002 (WMO/TD-No. 1105)
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WCRP Informal/Series Report, 15/2001. Report of the ACSYS/GEWEX Glass-PILPS 2E Stage 1 Arctic hydrological model intercomparison study workshop
Lettenmaier D.P.; Bowling L.C.; Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 2001
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WCRP Informal/Series Report, 6/2000. Summary report of an ACSYS Meeting on data and data management in support of sea-ice/ocean modelling
World Meteorological Organization (WMO) ; International Council of Scientific Unions (ICSU); Intergovernmental Oceanographic Commission (IOC) - WMO, 2000
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RAAOM report, 30. Research activities in atmospheric and oceanic modelling
World Meteorological Organization (WMO) ; CAS/JSC Working Group on Numerical Experimentation - WMO, 2000 (WMO/TD-No. 987)
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WCRP Informal/Series Report, 11/2000. Report of the first session of the ACSYS Numerical experimentation group
Lemke P.; International Council of Scientific Unions (ICSU); Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 2000
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WCRP Informal/Series Report, 13/1999. Report of the GEWEX/ACSYS Workshop on cold regions hydrological modelling
World Meteorological Organization (WMO) ; International Council of Scientific Unions (ICSU); Intergovernmental Oceanographic Commission (IOC) - WMO, 1999
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RAAOM report, 28. Research activities in atmospheric and oceanic modelling
World Meteorological Organization (WMO) ; CAS/JSC Working Group on Numerical Experimentation - WMO, 1999 (WMO/TD-No. 942)
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WCRP Informal/Series Report, 12/1999. Report of the Hydrology models intercomparison planning meeting
World Meteorological Organization (WMO) ; International Council of Scientific Unions (ICSU); Intergovernmental Oceanographic Commission (IOC) - WMO, 1999
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RAAOM report, 27. Research activities in atmospheric and oceanic modelling
World Meteorological Organization (WMO) ; CAS/JSC Working Group on Numerical Experimentation - WMO, 1998 (WMO/TD-No. 865)
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RAAOM report, 25. Research activities in atmospheric and oceanic modelling
World Meteorological Organization (WMO) ; CAS/JSC Working Group on Numerical Experimentation - WMO, 1997 (WMO/TD-No. 792)
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WCRP Informal/Series Report, 5/1997. Report of the Third ACSYS sea-ice/ocean modelling workshop
Lemke P.; International Council of Scientific Unions (ICSU); Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 1997
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WCRP Informal/Series Report, 1/1997. Report of the Second ACSYS sea-ice/ocean modelling workshop
Lemke P.; International Council of Scientific Unions (ICSU); Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 1997
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RAAOM report, 23. Research activities in atmospheric and oceanic modelling
World Meteorological Organization (WMO) ; CAS/JSC Working Group on Numerical Experimentation - WMO, 1996 (WMO/TD-No. 734)
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RAAOM report, 24. Global tracer transport models: report of the scientific symposium
Pyle J.; Prather Mickael; World Climate Research Programme (WCRP) ; et al. - WMO, 1996 (WMO/TD-No. 770)
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WCRP Informal/Series Report, 12/1996. Report of the First ACSYS sea-ice/ocean modelling workshop
World Meteorological Organization (WMO) ; International Council of Scientific Unions (ICSU); Intergovernmental Oceanographic Commission (IOC) - WMO, 1996
RAAOM report, 21. Research activities in atmospheric and oceanic modelling (WMO/TD-No. 665)
World Meteorological Organization (WMO) ; CAS/JSC Working Group on Numerical Experimentation - WMO, 1995
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RAAOM report, 19. Research activities in atmospheric and oceanic modelling
World Meteorological Organization (WMO) ; CAS/JSC Working Group on Numerical Experimentation - WMO, 1994 (WMO/TD-No. 592)
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RAAOM report, 18. Research activities in atmospheric and oceanic modelling
World Meteorological Organization (WMO) ; CAS/JSC Working Group on Numerical Experimentation - WMO, 1993 (WMO/TD-No. 533)
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RAAOM report, 14. Research activities in atmospheric and oceanic modelling
World Meteorological Organization (WMO) ; CAS/JSC Working Group on Numerical Experimentation - WMO, 1993 (WMO/TD-No. 396)
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MMROA Report, 27. A survey on multidisciplinary ocean modelling and forecasting
World Meteorological Organization (WMO) ; Intergovernmental Oceanographic Commission (IOC) - WMO, 1992 (WMO/TD-No. 516)
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RAAOM report, 17. Research activities in atmospheric and oceanic modelling
World Meteorological Organization (WMO) ; CAS/JSC Working Group on Numerical Experimentation - WMO, 1992 (WMO/TD-No. 467)
Operational hydrology report (OHR), 38. Simulated real-time intercomparison of hydrological models
This report presents essential elements of the history, design, implementation and results of the WMO project on the simulated real-time intercomparison of hydrological models. The aims of the project included a study to compare the abilities of both rainfall-runoff and snowmelt-runoff models to forecast stream flow under simulated real-time conditions and to report on case studies, thus offering guidance through demonstrations of the models' abilities in various situations. Fourteen models were used in the intercomparison which took place during a workshop held in Vancouver, Canada, in 1987.< ...
WCRP, 62. World Climate Research Programme (WCRP) sea-ice and climate : report of a workshop on polar radiation fluxes and sea-ice modelling
Raschke Ehrhard; World Meteorological Organization (WMO) ; International Council of Scientific Unions (ICSU) - WMO, 1991 (WMO/TD-No. 442)
WCRP, 42. PBL model evaluation workshop : European Centre for Medium-range Forecasts
Taylor Peter A.; Wyngaard John C.; European Centre for Medium-Range Weather Forecasts ; et al. - WMO, 1990 (WMO/TD-No. 378)
Operational hydrology report (OHR), 34. Hydrological models for water-resources system design and operation
Most hydrological models are used only for research studies, but in the last two decades many have been introduced into operational practice. This report presents a comprehensive international survey of such operational models, with particular attention being paid to models for real-time forecasting. The conclusions indicate a number of well-developed, operational models, while at the same time noting the serious gaps that require further research and model development.
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RAAOM report, 13. Research activities in atmospheric and oceanic modelling
World Meteorological Organization (WMO) ; CAS/JSC Working Group on Numerical Experimentation - WMO, 1989 (WMO/TD-No. 332)
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Technical report to the Commission for Hydrology, 21. Conceptual models used in hydrological studies
Workbook on numerical weather prediction for the tropics for the training of Class I and Class II meteorological personnel
This workbook has been prepared to assist Class I and Class II meteorological personnel in tackling coding and applying theoretical ideas. Many software models have been included.
The analysis of data collected from international experiments on lucerne : (report of the CAgM Working group on international experiments for the acquisition of Lucerne/Weather Data)
International experiments on lucerne are described and an analysis is given of the results with regard to growth, development and yield. Lucerne weather models are presented and recommendations made on the cultivation and adoption of this forage crop.
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