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The meteorological ** who comes here is not only to observe the sky, but also to measure the earth and explore space.
At that time, the meteorological department will provide more thoughtful services to the public,** including the ground, ocean, and space environments; In addition to routine monitoring of temperature, precipitation, wind, etc., the impact of the ground environment on the weather; And from the current short-term forecast to the climate across quarters and years**.
Qin Dahe said that the future of the earth's environment will be different from the traditional meteorological forecast, it includes the impact of natural activities on the earth's atmosphere, the monitoring and analysis of various physical and chemical phenomena in the atmosphere, the monitoring and analysis of global and regional climate change, global and regional weather monitoring and forecasting, the impact of different underlying surface local and regional characteristics on the atmosphere, the analysis and evolution of comprehensive environmental conditions and trends, and the impact of the comprehensive atmospheric environment on the relevant spheres. the impact of the comprehensive atmospheric environment on social and economic activities and the ecological environment.
This kind of development has become the general trend of the development of the world's meteorological undertakings. At present, the role and status of meteorological departments in various countries are being repositioned, traditional public welfare meteorological services have been diversified, and meteorological departments in some developed countries are studying and formulating new meteorological operational technical systems, which have been proposed in the United States"Seamless"Forecast Service Strategy.
China's meteorological department also has the basis to expand this new business. At present, the meteorological department has a huge ground-based and air-based geo-environmental observation system, which can not only carry out traditional meteorological observations, but also can observe atmospheric physical and chemical elements such as radiation, acid rain, pollution, sandstorms, and the spread of nuclear pollution, and collect information on the ecological environment such as forests, vegetation, oceans, water surfaces, land surfaces, ice and snow, etc. In terms of information analysis, processing, processing and technology, in addition to the traditional meteorological elements, the meteorological department has the ability to gradually produce other physical, chemical, ecological and other aspects related to the earth's environment.
In addition, the meteorological department's understanding of the earth's environmental methods and the development law of the atmosphere has developed from general qualitative statistical analysis to in-depth and detailed quantitative analysis of many physical processes.
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I think that the current meteorological observation system is not meticulous enough, especially the observers, who have too much to do with the observation part, and the psychology is quite serious.
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WeatherWhen you walk through the lush forest and listen to the chirping of a hundred birds, you will be addicted to it. At this point, you think about what the birds might teach you.
Scientists have confirmed that the complex chirping of birds is actually half like a human being talking and singing, to express a certain emotion or communicate certain information. For example, calling friends to attract companions, mothers looking forward to the return of their children, choosing a mate for songs, and so on. Sometimes, the birds will also inform the industrious farmer of the agricultural time, ** weather, intelligent humans naturally understand.
In ancient China, there was a saying that "birdsong knows the four seasons". The Song Dynasty poet Lu You's poem "Bird Cry": "Savages have no calendar, and birds know four hours."
In February, spring ploughing must not be delayed. In March, when the orioles were heard, the young women were hungry for silkworms. In April, the Mingbu Valley, the silkworms are clustered; Uncle Crow in May, Miao is tired of grass.
In some mountainous areas of Jiangxi Province, there is a bird that calls every time February comes: "Spring rises". At the beginning of the summer, he shouted again
Spring goes also. In the Changbai Mountains of Jilin Province, before and after the valley rain, the cuckoo reminded people to "cut wheat and plant crops"; There is also a wonderful spring bird, whose voice says, "Don't pick flowers." "Tell people that destroying flowers and branches will yield no fruit.
In order to learn more about the relationship between agricultural weather and birds, I think I can get the answer from the farmer's uncle, who often arranges farming according to the arrival of migratory birds. So, I took a pen and paper and went deep into the fields to visit some old farmers.
Crows are not very welcome, because the high-pitched and vigorous chirping of crows is often the 'siren' of the coming wind, and the hoarse crow of the crow is coming, and the rain is coming. So said the farmers.
These are also folk proverbs that have been passed down to this day: the magpie arrives early, which is a sign of good weather; If you jump between the branches and scream with your head down, it will often be rainy in one day. Sparrows are also "barometers".
In the morning light, flocks of finches chirped, and the day was mostly sunny and good; If they shrink their heads and squeak and scream, they tend to turn sunny to rainy; Entering the window early in the evening and screaming slowly by the window indicates that there will be rain that night or the next day. If the magpie nests high, there will be a large water potential. These proverbs, which are widely circulated among the people, were told to me by old farmers who have been working in the fields for decades.
Now it has become an accurate "forecaster" for people to observe agricultural meteorology.
Some waterfowl on the seashore, before the arrival of the flood season, often fly to the vicinity of the village in flocks, and keep singing, but if there is a continuous "chirping" sound in the air, it means that it has been sunny recently.
In India, the peacock is worshiped as the "sacred bird", not only because of its gorgeous feathers and elegant demeanor, but also because it can give the locals ** weather. When there is rain, the peacock's "Mi-woo" cry becomes "Ming-Ao", as if to say: "The rain is coming!"
When thunderstorms and typhoons come, peacocks will scream again.
Through a series of investigations, I have come to the conclusion that birds are very sensitive to the weather, and their different calls are often closely related to meteorological changes.
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Is it some kind of competition in Jiangsu? Yas. I'm writing about survival in adversity and that sort of thing. But how to put it on the weather. Meteorology: 1Meteorology 2Scenario 3Imposing. What the hell is it、、、
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It's really hard to write .........tat, but the downstairs inside is obviously not a discussion, it's obviously a casual ......We're also very distressed, but if you want to use meteorology as a topic, you must first clarify what the "meteorology" you want to write about is and what the central idea is. Look for topics that make sense. Then it's more difficult to make up your mind, and we won't .........It's very difficult for us) The rest of the arguments should be clear-sighted, and there should not be too many examples
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A variety of other types of weather radars exist. The WSR-88D long-range surveillance Doppler radar is often supplemented with a small medium-range weather radar used by television stations for local observations. In addition to the common commercial airborne weather avoidance and detection radars, airborne wind monitoring can provide detailed forecasts and warnings for the approaching Haiyang county winds.
Wind profile systems with fixed beams pointing vertically are routinely used to obtain continuous profiles of horizontal winds, while spaceborne weather radars measure a wide range of precipitation areas and wind characteristics at the equator. Meteorological research results are regularly transmitted to the weather radar community to achieve higher spatial and temporal resolution, improve data quality, and give birth to new weather radar products, all of which have led to significant improvements in weather forecasting. Doppler weather radar measures vector wind fields and rainfall areas in detail.
Small high-mobility scientific radars have many of the same capabilities as fixed radars. Dual-polarization technology is used to improve quantitative rainfall measurements, detect hail, and identify snow and ice micropulls in water (rain). In addition to this, ground-based research radars can now measure atmospheric humidity in the boundary layer of the Earth's surface.
Airborne research radars have many of the same features, but with a larger coverage area and greater maneuverability. The diversity of applications in scientific research and operations illustrates the vitality of weather radar technology and its evolution. The main distinguishing points between weather radars and radars for other purposes, such as aviation or military, are the attributes of the meteorological target, the final characteristics of the radar signal, and the means of processing meteorological echoes that produce only meaningful and critical weather information in order to suppress the human factor.
Important meteorological targets have a wide range of scatter echo intensities (-20 70dBz), distributed in distances less than lkm to long distances greater than 200 km, within 100 m close to the ground to the top of the atmosphere (20 km above the ground) that is important for weather conditions, and usually occupy the majority of the spatial resolution units observed by millions of radars. In addition, in order to estimate parameters such as rainfall rate, rainfall type, air flow, end-flow and wind shear, it is necessary to quantitatively measure the signal characteristics received by each spatially resolved unit (or meteorological target) of the radar. In addition, because most radar resolution units contain useful information, weather radars require high-speed digital signal processors, effective means of suppressing false targets generated by data density, high-data-rate recording systems, and informational displays of this information.
Therefore, while many non-weather radars are tasked with detecting, tracking, and detailing a relatively small number of required targets in areas with clutter such as large areas of weather, features, sea surfaces, bait, and birds, weather radars need to make accurate estimates of the properties of "meteorological clutter" itself. Whether it is aviation military radar or weather radar, it requires heavy processing activities, but because there are a large number of different important information that users need to extract when measuring widely distributed weather systems, the amount of data that is digested, recorded, processed, and displayed is often greater in weather radar.
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