Data from radar observations of the hydrometeorological center. Animation map of weather phenomena - cloudiness, precipitation. Radar data used to develop storm warnings

Animated map of events for the last 3 hours.

Click on the map above. Opens in a new window, latest release, you can zoom in to 1500x1100 px.
• A daily updated map of weather phenomena according to the radar complexes of the observation network of Roshydromet, Ukraine and Belarus. Animation (animated map) current data radar observations for ETP → weather phenomena for the last 3 hours (look almost in real time). If the map does not load here, then "click" on the link
  » animated weather map for the last 3 hours
• Another "MORE VISUAL" animated map of all weather phenomena in the European territory of Russia (ETR) in real time
  » Animated map of DMRL weather events for the last 3 hours

Above was, let's say, a "global" map of weather phenomena, including the entire European territory of Russia.
Now go to the map at a different URL » map DMRL

On this map there will be areas highlighted gray color and, when hovered over, the cursor should change.
If the location you are interested in falls into such places on the map, then you can learn more about current weather patterns in that region (at the top will be the date and time of the snapshot).
On the "DMRL map" set the "cursor" to the desired city or any selected place, click on it with the left mouse button (see the figure on the left).
For clarity, below is a screenshot of the map, i.e. what image will you get.
You can find everything in the picture. conventions weather events, etc..

Department of Experimental Atmospheric Physics

essay

On the topic : Weather radar stations

Completed by: student of group MP-480

Poteryaiko E. V.

St. Petersburg

2012

SECTION 1. METEOROLOGICAL RADAR MRL-5………………………………3

The purpose of the station and the principle of operation ……………………………………………………………..3

Schematic diagram of MRL-5……………………………………………………………………………5

Main technical data of MRL-5 …………………………………………………………....6

Antenna-waveguide system…………………………………………………………………………7

Transmitting device…………………………………………………………………………………9

Receiving device ………………………..………………………………………………………..9

Indicator device ……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………… 10 SECTION 2.OBTAINING PRIMARY INFORMATIONRADAR

OBSERVATIONS IN THE NEAR AND FAR ZONES……………………………….12

Section 4. Automated meteorological

RADAR COMPLEX “METEO-CELL……………………………………….. 17

weather radarMRL-5.

1. The purpose of the station and the principle of operation.

The MRL-5 weather radar is a specialized storm warning and hail protection radar designed to solve the following tasks:

detection and location of centers of thunderstorms, hail and heavy precipitation within a radius of 300 km;

 determining the horizontal and vertical extent of meteorological formations, the direction and speed of their movement;

 determination of the upper and lower boundaries of clouds of any shape;

 measurements of the average power of the radio echo of meteorological targets.

selection of the radio echo of meteorological objects against the background of interfering signals reflected from local objects;

 ensuring hail protection, i.e. detection and localization of hail sources in clouds (measuring their coordinates and determining their physical characteristics)

MRL-5 two-wave high-potential meteorological radar. It is produced in two modifications: mobile - MRL-5A, stationary - MRL-5B. In the mobile version, MRL-5 was created on the basis of a specialized trailer PAU - 1, divided into two compartments: indicator (warm) and transceiver (cold). The system antenna is installed on the roof of the trailer under the windproof shell.

In the stationary version, the MRL is located on the second floor of a typical building for MRL-5 or on the top floor in two isolated rooms.

The station is based on the pulse method of radar.

The transmitting device generates powerful short pulses microwave electromagnetic energy that enters the antenna through waveguide paths. The radiation of electromagnetic energy into space is produced by an antenna in the form of a narrow, highly directional beam. If the emitted signal, propagating in space, encounters obstacles in its path in the form of local objects, clouds and other meteorological formations, then it is reflected in different directions from the object, including in the direction of the MRL. The reflected pulses are received by the same antenna and are fed through the waveguide path to the receiving device. In the receiving device, the reflected signals, after amplification and conversion, enter the indicator screens. MRL-5 has a number of features:

 two separate channels - 3 cm (channel 1) and 10 cm (channel 2); the storm warning mode can be implemented on each of the channels, and the hail protection maintenance mode is implemented mainly when both channels work together;

antenna system with a parabolic reflector and a dual-band feed, forming narrow radiation patterns; the use of such an antenna provides a high resolution in angular coordinates and alignment of the radiation patterns of both ranges with high accuracy.

 high sensitivity of receiving devices allows to increase the detection range of meteorological objects, and a wide dynamic range ensures high accuracy of quantitative measurements.

 a universal indication system that provides the possibility of observing and recording radio echo from meteorological objects:

combined indicators of IKO and IDV with a wide range of scanning scales, providing measurements, observations and photographic recording of radio echo in the horizontal and vertical planes;

 two-beam indicator based on ST-55 oscilloscope for observing the radio echo of meteorological objects in the amplitude-range coordinates;

 equipment for converting angular information, providing: the output of the azimuth of meteorological targets in geographical and artillery coordinates with high accuracy (0.10).

 device for automatic selection of hail sources;

 a light panel that provides prompt reading and photographic recording of the date, time, number of the observed channel, the sign of the norm of the energy potential of the radar, the level of isoech after 6 dB, scale, azimuth, antenna tilt angle, horizontal and slant range, the height of the target selected on the indicator;

 A device for monitoring the sensitivity of receiving devices, the power of transmitting devices and the energy potential of the station as a whole;

 Controlled microwave attenuators based on p-n-pdiodes, providing measurement of radio echo powers and their correction per squared distance;

Special photo-recording equipment for documenting radio echo patterns;

 power supply system, which provides for the power supply of equipment either from an industrial three-phase network 50 Hz 380 V, or from an autonomous three-phase network 50 Hz 220 V.

The method of radar interferometry is indispensable for the timely detection of shifts earth's surface over areas of underground mining, mapping of deformations of the sides and ledges of quarries, as well as for monitoring natural and man-made displacements and deformations of structures.

Radar interferometry detects the slightest shifts - down to a few millimeters minimizes the risk of emergencies and significantly reduces their possible consequences.

The main advantage of radar interferometry is an independent remote assessment of changes over the entire image area. For the calculation, an array of satellite radar data is used, obtained at intervals of up to 8 times a month.

Radar monitoring of displacements and deformations takes place in two stages:

At this stage, it is necessary to obtain the initial array of radar observation data - 30 radar surveys for 30 different dates.

Radar data can be collected over 5–6 months (for monitoring intense displacements of up to 1 meter per year, the period from April to October is ideal) or over several years (suitable for monitoring in cities where displacements are not too intense).

2. Interferometric data processing of multipass radar satellite imagery.

At this stage, maps of displacements and deformations of the earth's surface and structures are calculated from the array of initial data of radar observations.

As a result, the customer receives maps that record changes in the earth's surface and structures as of each survey date in vector and raster formats, accompanied by technical reports. Additionally, maps of vertical and horizontal shifts can be calculated, and areal data processing can also be performed using the SBas method, which gives output raster files of displacements and displacement isolines.

Permanent diffusers in the center of Astana. The stable buildings of the House of Ministries (center), the Supreme Court (top left), the parliamentary complex and the presidential administration (high-rise buildings in the background) and the residence of the President of Kazakhstan (background). Reflectors along the embankment are also stable.

An example of monitoring displacements of the earth's surface in the area of ​​a gas field and a groundwater field. Based on the results of a 30-pass survey of this area for 6 months (frame area 40 × 40 km), 5,000,000 points were identified - constant radar signal scatterers, for each of which offsets are known for each survey date relative to the date of the first survey.

A fragment of a raster map of earth surface displacements in color coding. In pixel - the values ​​of the shift of the earth's surface in millimeters. Negative values ​​correspond to subsidence, positive values ​​correspond to uplifts. By pixels with equal values ​​of offsets, isolines of offsets are drawn.

Glossary

The first radar stations that came to meteorologists after the war could only detect hazmat cumulonimbus clouds. It took several decades to modernize them and develop measuring circuits that could extract information not only from the height of the radio echo, but also from the results of the signals reflected from the clouds. The ability to observe the appearance of dangerous phenomena, calculate their speed and direction of movement for a long time allowed the SSR to take a leading position in storm warning.

For 60 years, weather radar has been an indispensable tool for detecting phenomena that accompany convective clouds - thunderstorms, hail, showers, squalls.

Meteorological incoherent radars determine HH (hazardous phenomena) by indirect signs - measurements of the height of the upper boundary of the radio echo and the reflectivity of cumulonimbus clouds, and make a decision using radar hazard criteria.

Radar Minsk-2. Minsk, Belarus
Radar Gomel, Belarus MRL Doppler. Wavelength 5.5 cm. Viewing radius 200 km. Observation mode is automatic, once every 10 minutes. Receipt and processing of radar information - .	Radar Vitebsk, Belarus DMRL-S - Doppler weather radar. Wavelength 5.3 cm. Radius of view 200 km. Observation mode is automatic, once every 10 minutes. Receiving and processing of radar information - "Meteocell" software.
Boryspil Radar. Kyiv, Ukraine MRL Doppler. Wavelength 5.5 cm. Viewing radius 200 km. Observation mode is automatic, once every 10 minutes. Receipt and processing of radar information - .	Radar Zaporozhye international. Zaporozhye, Ukraine MRL-5 is incoherent. Wavelength 3.2 cm. Viewing radius 200 km. The period of observation when working with OH is 30 minutes. Receipt and processing of radar information - . MRL Zaporozhye coordinates on Google map. The position of the weather radar at the Zaporozhye airfield: