نتایج جستجو برای: snow gauges
تعداد نتایج: 21065 فیلتر نتایج به سال:
A new product, the Pan-Arctic Snowfall Reconstruction (PASR), is developed to address the problem of cold season precipitation gauge biases for the 1940–99 period. The method used to create the PASR is different from methods used in other large-scale precipitation data products and has not previously been employed for estimating pan-arctic snowfall. The NASA Interannual-to-Seasonal Prediction P...
Abstract Main aim of the study was to determine temporal and spatial patterns relations between monthly annual average river flow (RF) water temperature (WT) for 53 rivers in Poland. The research made use WT RF 88 gauges period 1971–2015. Correlations were established using Spearman’s rank correlation coefficient similarity RF–WT determined Ward’s hierarchical grouping. It demonstrated that cor...
1. INTRODUCTION Across much of the United States, and in many parts of the world, winter precipitation can come in many forms. It can range from all-liquid rain, to partially frozen particles, and completely frozen particles such as ice pellets or snow. The results of winter precipitation, then, are highly dependent on what type of precipitation falls. If rain falls into subfreezing environment...
In this study in order to monitor snow cover, the Moderate Resolution Imaging Spectroradiometer (MODIS) optical images were used, while for detection of snow covered areas, the snow index-NDSI, was applied. The results showed - according to the climatic conditions of the region- during the following months: December, January, February and March, most of the area is covered by snow and the max...
We present data on shock wave propagation in porous ice under conditions applicable to the outer solar system. The equation of state of porous ice under low temperature and low pressure conditions agrees well with measurements under terrestrial conditions implying that data on terrestrial snow may be applicable to the outer solar system. We also observe rarefaction waves from small regions of i...
A surface-precipitation-rate retrieval algorithm for 13-channel Advanced Microwave Sounding Unit (AMSU) millimeter-wave spectral observations from 23 to 191 GHz is described. It was trained using cloudresolving fifth-generation Pennsylvania State University–National Center for Atmospheric Research Mesoscale Model (MM5) simulations over 106 global storms. The resulting retrievals from the U.S. N...
The WMO Laboratory Intercomparison of Rainfall Intensity (RI) Gauges described in a companion paper was the very first attempt at understanding the performances of various types of rainfall intensity gauges in controlled laboratory conditions, and provided quantitative information regarding various errors associated with RI measurements. The conclusions report that all instruments analyzed were...
Introduction: Nuclear moisture density gauges are widely used in construction industry in different countries across the world, including Ghana, on a large scale. Like all irradiating devices, the nuclear gauges should be subjected to radiation safety assessment based on radiation protection and safety principles. Regarding this, the objective of this research was to i...
Tipping-bucket raingauges can produce misleading reports as a consequence of a number of factors. Very fast tips may result from gauge disturbance, faulty bucket positioning or abrupt snow melt. Very slow tips may result from partial blockage. An absence of tips is an indication of a major problem. This paper suggests easily programmable diagnostic checks that may be used to identify any of the...
Precipitation is the most fundamental input of water for terrestrial ecosystems. Most precipitation inputs are vertical, via rain, but can be horizontal, via wind-driven rain and snow, or, in some ecosystems such as tropical montane cloud forests (TMCFs), via fog interception. Fog interception can be particularly important in ecosystems where fog is frequently present and there are seasonal per...
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