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Author Bojar, W.; Żarski, J.; Knopik, L.; Kuśmierek-Tomaszewska, R.; Sikora, M.; Dzieża, G.
Title Markov Chain as a Model of Daily Total Precipitation and a Prediction of Future Natural Events Type Conference Article
Year 2016 Publication (up) Abbreviated Journal
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Publisher Place of Publication Berlin (Germany) Editor
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Area Expedition Conference International Crop Modelling Symposium iCROPM 2016, 2016-05-15 to 2016-05-17, Berlin, Germany
Notes Approved no
Call Number MA @ admin @ Serial 4911
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Author Bojar, W.; Knopik, L.; Żarski, J.; Sławiński, C.; Baranowski, P.; Żarski, W.
Title Impact of extreme climate changes on the forecasted agriculture production Type Journal Article
Year 2014 Publication (up) Acta Agrophysica Abbreviated Journal Acta Agrophysica
Volume 21 Issue 4 Pages 415-431
Keywords agricultural economics; agriculture; climate change; crop production; integrating assessments
Abstract The paper presents general characteristics of resources and outputs of agriculture in the Kujawsko-Pomorskie and Lubelskie Regions, based on statistical databases and literature review. Some specific features of the regions, with special consideration for the predicted extreme climate changes, are also included. Next, some statistically significant dependencies between the climatic parameters and yields of selected important crops in the abovementioned regions were worked out on the basis of empirical survey conducted in the University of Technology and Life Sciences, Bydgoszcz, and the Institute of Agrophysics in Lublin. Creating an appropriate method of forecasting long series of ten days without precipitation was necessary to find the desired dependencies. Third, some efforts were taken to make integrated assessments of forecast agricultural outputs influenced by climate extreme phenomena on the basis of the yield-precipitation relations obtained and on the data coming from wide area model regional outputs such as prices of farmland and produce.
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Notes CropM, TradeM, ft_macsur Approved no
Call Number MA @ admin @ Serial 4619
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Author Bojar, W.; Knopik, L.; Żarski, J.; Kuśmierek-Tomaszewska, R.
Title Integrated assessment of crop productivity based on the food supply forecasting Type Journal Article
Year 2016 Publication (up) Agricultural Economics – Czech Abbreviated Journal Agricultural Economics – Czech
Volume 61 Issue 11 Pages 502-510
Keywords climate changes; decision-making tools; estimation of parameters; forecasted outputs; gamma distribution; predicting yields; climate-change; emissions scenarios; impacts; potato; yield; growth; policy; scale; water
Abstract Climate change scenarios suggest that long periods without rainfall will occur in the future often causing instability of the agricultural products market. The aim of our research was to build a model describing the amount of precipitation and droughts for forecasting crop yields in the future. In this study, we analysed a non-standard mixture of gamma and one point distributions as the model of rainfall. On the basis of the rainfall data, one can estimate parameters of the distribution. Parameter estimators were constructed using a method of maximum likelihood. The obtained rainfall data allow confirming the hypothesis of the adequacy of the proposed rainfall models. Long series of droughts allow one to determine the probabilities of adverse phenomena in agriculture. Based on the model, yields of barley in the years 2030 and 2050 were forecasted which can be used for the assessment of other crops productivity. The results obtained with this approach can be used to predict decreases in agricultural production caused by prospective rainfall shortages. This will enable decision makers to shape effective agricultural policies in order to learn how to balance the food supplies and demands through an appropriate management of stored raw food materials and import/export policies.
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ISSN 0139-570x ISBN Medium Article
Area Expedition Conference
Notes CropM, TradeM, ft_macsur Approved no
Call Number MA @ admin @ Serial 4644
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Author Bojar, W.
Title Factsheets of the models Type Report
Year 2013 Publication (up) FACCE MACSUR Reports Abbreviated Journal
Volume 1 Issue Pages D-T1.1
Keywords
Abstract The exploration of adaptation and mitigation measures in the context of global challenges like climate change, food security and expected demographic boom is an field of research of growing importance. Over the last decades many research groups have been developing economic-trade models to analyse consequences on farm welfare, market supply and trade, some of them also address food security and other global concerns. There are many different ways to tackle these issues and the specific advantages and limitations of alternative modelling strategies are not yet well understood. The objective of the WP1 T1.1 task within TradeM theme of MACSUR is to use the results of a survey on trade and economic models of MACSUR Consortium partners to show which topics are currently addressed in the different models, which methods are used and how well these tools are prepared for an integration with other models like climate, crop and livestock models. This work was co-financed by NCBiR, Contract no. FACCE JPI/04/2012 – P100 PARTNER No Label
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Notes Approved no
Call Number MA @ admin @ Serial 2261
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Author Bojar, W.
Title MACSUR TradeM Workshop Exploring new ideas for trade and agriculture model integration for assessing the impacts of climate change on food security Type Report
Year 2013 Publication (up) FACCE MACSUR Reports Abbreviated Journal
Volume 1 Issue Pages M-T0.3
Keywords
Abstract The first TradeM workshop was held at Haifa University (Israel), 3-5 March 2013. It was a  state-of-the-art Workshop ‘Economic Modelling on Agriculture with Climate Change for  Food Security’. Sixteen papers are presented, following a call for abstracts submitted in  December 2012.  Presented, reviewed and discussed models, their inputs, outputs and main results of  case-study analyses let indicate of how the model can be used to analyze the  impacts of climate change on food security, how the model can contribute to, and  benefit from other economic and/or crop and livestock models and what input is  needed from CropM and LiveM. There were explored ideas for closer integration and  linkage between agriculture and economic models and between economic models at  different levels, addressing issues of model structure, scale and data processing. Focus was  on model comparison, gap analysis, scientific advancements and improvements. We also  addressed the key challenges of the economic models (macro- versus micro-economics;  uncertainty versus risks; variability and distribution), and identified ways to cope with  scaling, uncertainty, risks. The workshop let identify the requirements from CropM and  LiveM, find policy questions that MACSUR is going to address, start with the content of the  case studies and plan for publication of scientific papers.  The sessions were broadcast live via the internet. Twenty-four registered participants and  about 65 local visitors attended the workshop.This work was co-financed by NCBiR, Contract no. FACCE JPI/04/2012 – P100 PARTNER No Label
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Notes Approved no
Call Number MA @ admin @ Serial 2260
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