The space-based component of the Global Observing System and its in situ counterpart form World Weather Watch’s System. (GOS) was established during formation Meteorological Organization (WMO) Watch (WWW). During nearly four decades since WWW, space based GOS evolved from a constellation one or more polar-orbiting meteorological satellites to two constellations comprised at least near-polar-orb...

The lives and livelihoods of people around the world are increasingly threatened by climate-related risks as climate change increases frequency severity high-impact weather. In turn, risk multiple hazards occurring simultaneously grows compound impacts become more likely. World Meteorological Organization (WMO) proposed use multi-hazard impact-based forecasting (IbF) to better anticipate reduce...

Automatic Weather Stations (AWS) are extensively used for gathering meteorological and climatic data. The World Meteorological Organization (WMO) provides publications with guidelines the implementation, installation, usages of these stations. Nowadays, in new era Internet Things, there is an ever-increasing necessity implementation automatic observing systems that will provide scientists real-...

isfahan province is located in the center of iran and has arid and semi-arid climate. in recent years, water shortage has increased in this region and has affected crop production. wheat is one of the most important crops of the province. in the present research, an index (dei) has been developed for drought evaluation using long term climatic data through application of principle components an...

Timely and accurate monitoring of global weather anomalies and drought conditions is essential for assessing global crop conditions. Soil moisture observations are particularly important for crop yield fluctuations provided by the US Department of Agriculture (USDA) Production Estimation and Crop Assessment Division (PECAD). The current system utilized by PECAD estimates soil moisture from a 2-...

[1] World Meteorological Organization (WMO) regression models for precipitation gauge bias developed by Goodison et al. (1998) were optimized using the very fast simulated annealing algorithm. The regression model uncertainties were estimated by use of a Bayesian stochastic inversion (BSI) algorithm. Legates and Willmott’s (1990) precipitation correction factors database (applicable to average ...

Abstract. The weather information value chain provides a framework for characterising the production, communication, and use of by all stakeholders in an end-to-end warning system covering hazard monitoring, modelling forecasting, risk assessment, communication preparedness activities. Warning services are typically developed provided through multitude complex malleable chains (networks), often...

in order to identify the pressure patterns causing the cold weather over the northwestern iran, daily lowest temperatures of six stations of the study area during january- march months of the 1986-2003 period were obtained from meteorological organization of islamic republic of iran (irimo) in the quality controlled format. according to the defined threshold, the very cold days were extracted a...

We present an automated algorithm for testing surface broadband radiation measurements to detect erroneous data. The methodology has been developed using data from the US Department of Energy Atmospheric Radiation Measurement (ARM) Program. The testing includes physically possible limits as determined by the World Meteorological Organization (WMO) Baseline Surface Radiation Network, as well as ...