scholarly journals Evaluation of Observation Environment for Weather Stations Located in Metropolitan Areas

2015 ◽  
Vol 31 (2) ◽  
pp. 193-203 ◽  
Author(s):  
Ho-Jin Yang ◽  
Jae-Jin Kim
2000 ◽  
Author(s):  
N. Esmen ◽  
T. Hall ◽  
D. Johnson ◽  
R. Lynch ◽  
M. Phillips ◽  
...  

2020 ◽  
Vol 82 ◽  
pp. 149-160
Author(s):  
N Kargapolova

Numerical models of the heat index time series and spatio-temporal fields can be used for a variety of purposes, from the study of the dynamics of heat waves to projections of the influence of future climate on humans. To conduct these studies one must have efficient numerical models that successfully reproduce key features of the real weather processes. In this study, 2 numerical stochastic models of the spatio-temporal non-Gaussian field of the average daily heat index (ADHI) are considered. The field is simulated on an irregular grid determined by the location of weather stations. The first model is based on the method of the inverse distribution function. The second model is constructed using the normalization method. Real data collected at weather stations located in southern Russia are used to both determine the input parameters and to verify the proposed models. It is shown that the first model reproduces the properties of the real field of the ADHI more precisely compared to the second one, but the numerical implementation of the first model is significantly more time consuming. In the future, it is intended to transform the models presented to a numerical model of the conditional spatio-temporal field of the ADHI defined on a dense spatio-temporal grid and to use the model constructed for the stochastic forecasting of the heat index.


2005 ◽  
Vol 3 (1) ◽  
pp. 67-104 ◽  
Author(s):  
Chikan Richard Hung

This article analyzes the characteristics of Asian American nonprofit organizations in major U.S. metropolitan areas. The data are based on internet archives of nonprofit organization Form 990 and related information. Asian American nonprofits are less than 20 years old on average. They remain a relatively small part of the nonprofit sector. Religious organizations are generally the largest group among Asian American nonprofits, followed by cultural organizations, service agencies, and public interest associations of similar proportions. Asian American secular organizations as a group tend to be younger, are more likely to be in central cities, in wealthy and poor communities, as well as in metropolitan areas with a more homogenous Asian ethnic population and a relatively more active general population in community organizing. The opposite is true for religious Asian American organizations. The pattern is less consistent among Asian American cultural, service, and public interest organizations. Regarding organization size, more established Asian American nonprofits, Pan Asian American organizations, and those agencies located in communities with larger Asian American population have more total assets and annual revenue.


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