ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Volume 14,Issue 1,1988 Table of Contents
1988, 14(1):3-7.
DOI: 10.7519/j.issn.1000-0526.1988.01.001
Abstract:
Polymer layer capacitor humidity sensor is a sort of hew humidity detecting element of thin film capacitor pattern with high accuracy and rapid responce, which can be worked in all range of humidity and in the temperature range of + 40℃ to-40℃. This paper discribes chiefly the research of this sensor that includes its operational Principle, constitution, specifications and test conditions in fields.This sensor have been measured in laboratory by using standard equipments in the range of temperature down to-40℃ and tested at some weather stations for half to one years. It is proved that its specifications obtaind the level of the same type of sensor made of VAISALA Company in Finland.
Polymer layer capacitor humidity sensor is a sort of hew humidity detecting element of thin film capacitor pattern with high accuracy and rapid responce, which can be worked in all range of humidity and in the temperature range of + 40℃ to-40℃. This paper discribes chiefly the research of this sensor that includes its operational Principle, constitution, specifications and test conditions in fields.This sensor have been measured in laboratory by using standard equipments in the range of temperature down to-40℃ and tested at some weather stations for half to one years. It is proved that its specifications obtaind the level of the same type of sensor made of VAISALA Company in Finland.
1988, 14(1):8-11.
DOI: 10.7519/j.issn.1000-0526.1988.1.002
Abstract:
This paper analysed variety ef raindrop spectra and their characteristic parameters along a horizontal level. Within horizontal scale ranging 60km (elevation 1.-1.8km) Existed apparently three peaks of raindrop concentration and precipitation intensity.Raindrop spectra and their characteristic parameters were different at peaks and troughs of precipitation intensity. Raindrop spectra may be fitted with exponential form n(D) = NO exp (-XD). Samples of correlation signification level a<0.01 hold 71. 8% of total samples.
This paper analysed variety ef raindrop spectra and their characteristic parameters along a horizontal level. Within horizontal scale ranging 60km (elevation 1.-1.8km) Existed apparently three peaks of raindrop concentration and precipitation intensity.Raindrop spectra and their characteristic parameters were different at peaks and troughs of precipitation intensity. Raindrop spectra may be fitted with exponential form n(D) = NO exp (-XD). Samples of correlation signification level a<0.01 hold 71. 8% of total samples.
1988, 14(1):12-16.
DOI: 10.7519/j.issn.1000-0526.1988.1.003
Abstract:
In this paper using indirect method inferred long variation of atmospheric quality and the seasonal variation of air pollution, by the variation of atmospheric radiation) process, transparency and turbidity in 1962-1985. Its resutl shows the urban air pollution has been developing gradually, by decreasing of radiative flux and transparency of atmosphere, increasing of atmospheric turbidity, due to increasing of pollution particle. TR-the turbidity factor of atmospheric pollutant-discussed in this paper, reflected objectively annual variation of air pollution over Fuzhou City.
In this paper using indirect method inferred long variation of atmospheric quality and the seasonal variation of air pollution, by the variation of atmospheric radiation) process, transparency and turbidity in 1962-1985. Its resutl shows the urban air pollution has been developing gradually, by decreasing of radiative flux and transparency of atmosphere, increasing of atmospheric turbidity, due to increasing of pollution particle. TR-the turbidity factor of atmospheric pollutant-discussed in this paper, reflected objectively annual variation of air pollution over Fuzhou City.
1988, 14(1):17-22.
DOI: 10.7519/j.issn.1000-0526.1988.01.004
Abstract:
In this paper, the author have applied the fundamental theory of multilevel recursion to short-range thunderstorm forecast and proposed model A and B. It is shown that the method of multilevel recursion is suitable for short-range weather forecast.
In this paper, the author have applied the fundamental theory of multilevel recursion to short-range thunderstorm forecast and proposed model A and B. It is shown that the method of multilevel recursion is suitable for short-range weather forecast.
1988, 14(1):23-27.
DOI: 10.7519/j.issn.1000-0526.1988.1.005
Abstract:
The bandpass filter has been utilized to analysis two cases of squall line event in North China. The realistic wind field has been successfully seperated into a slowly variable, more stable macroscale environment field and an obviously movable meso-scale disturbances field. In general, there are several meso-a scale(250-2500km) disturbances emerged into the disturbances field, some of them is deep and moving steadily. The squall line systems occurred in a region of strong air flow associated with one of these disturbances, which is larger and formed earlier and persisted quite longer than the life cycle of the squall lines.
The bandpass filter has been utilized to analysis two cases of squall line event in North China. The realistic wind field has been successfully seperated into a slowly variable, more stable macroscale environment field and an obviously movable meso-scale disturbances field. In general, there are several meso-a scale(250-2500km) disturbances emerged into the disturbances field, some of them is deep and moving steadily. The squall line systems occurred in a region of strong air flow associated with one of these disturbances, which is larger and formed earlier and persisted quite longer than the life cycle of the squall lines.
1988, 14(1):28-31.
DOI: 10.7519/j.issn.1000-0526.1988.01.006
Abstract:
According to the relationships between crop yield formation and agronomic characteristics, the crop-climate parameters were constructed, with which, the Baier-Robertson's Model was revised in this paper. Wheat yield prediction model in Zhen-jiang City was then developed, basing on the significance, stability and independence of the predictors and wheat yield in 1987 was estimated.
According to the relationships between crop yield formation and agronomic characteristics, the crop-climate parameters were constructed, with which, the Baier-Robertson's Model was revised in this paper. Wheat yield prediction model in Zhen-jiang City was then developed, basing on the significance, stability and independence of the predictors and wheat yield in 1987 was estimated.
Mobile website
® 2024 All Rights Reserved
Supported by:Beijing E-Tiller Technology Development Co., Ltd.
ISSN:1000-0526 CN:11-2282/P