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Mobile system for atmospheric temperature profile monitoring: mobile MTP-5. Mikhail Khaikine 1) , Arkady Koldaev 1) , Evgene Kadygrov 1) , Evgene Miller 1) Vladimir Sokolov 2) Nikolay Sokolov 3)

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slide1

Mobile system for atmospheric temperature profile monitoring: mobile MTP-5

Mikhail Khaikine1), Arkady Koldaev1), Evgene Kadygrov1), Evgene Miller1)Vladimir Sokolov2) Nikolay Sokolov3)

1) Central Aerological Observatory, Federal Service for Hydrometeorology and the Environmental Monitoring (Roshydromet) , Moscow, Russia,

e-mail: khaikine@mail.ru

2) Upper Volga Interregional Territorial Department, Roshydromet, Nijny Novgorod, Russia

3) The Committee for Environmental Protection and Natural Resources Management of the Nizhny Novgorod Region, Nijny Novgorod, Russia

Nijny Novgorod

slide2

Mobile system for atmospheric temperature profile monitoring: mobile MTP-5

Introduction

Studies of ground temperature heterogeneity show that the heat island inside of the city can have heterogeneous structure so-called "multicupolas". But this assumes, in turn, the three-dimensional heterogeneity of temperature profile. Thus, in the city can be observed different conditions for forming and destroying the inversions and, therefore, can be formed different prerequisites for pollution concentration increase in the Atmospheric Boundary Layer (ABL).

MMTP-5

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Mobile system for atmospheric temperature profile monitoring: mobile MTP-5

The technique and equipment used in the measurements.

The investigations of space heterogeneity of atmospheric temperature stratification were carried out by mobile system MMTP-5 in the large city Nijny Novgorod and in its suburb in August-October 2004. The measurements of temperature profiles were conducted simultaneously by MMTP-5 and by stationary MTP-5 installed on the roof of hotel “Oka” at the altitude 235 m. The special equipment installed on the mobile system MMTP-5 allowed measuring air pollution concentration.

The results of temperature profile measurements in 12 points of Nijny Novgorod and its suburb (5 points) are presented in this report.

Stationary MTP-5

Mobile system MMTP-5

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Mobile system for atmospheric temperature profile monitoring: mobile MTP-5

Main objectives for MMTP-5

1) Possibility of measurements in different locations with the use of unique, high cost device

2) Possibility of making measurements in the immediate vicinity of sores of air pollution

3) Possibility of scientific study of features in Urban climate and correspondent distribution of air pollutions (WMO GURME project)

4) Possibility of emergency service with “on site” air pollution diagnostic and forecast in case of industrial and public catastrophe

5) Commercial usage of the system as a rent or lease for environment protection services in industry and for scientific groups

MMTP

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Mobile system for atmospheric temperature profile monitoring: mobile MTP-5

Features of MMTP-5 construction

1) Absence of any microwave units inside the car – installation on the roof of car.

2) Harsh weather and road condition protection – installation inside the standard car roof box.

3) Vibrating protection against car structure vibration and vibration caused by the road – three levels of vibrating protection:

a) Solid state assembling of microwave radiometer;

b) Vibrating isolation of microwave radiometer and housing

c) Vibrating isolation of the complete system and car body in transport position

4) Power supply on the base of standard car battery – set of power converters and stabilizers

5) On line time and space location – GPS and GSM modem integrated in to the process of measurements

MMTP

slide8

Relative positions of measuring points

12,13

1,2,3

4

Volga

Oka

Measuring points altitude [m]

slide9

August 6, 2004

Temperature profile measured

by MMTP-5

12,13

1,2,3

4

slide10

August 7, 2004

Temperature profile measured

by MMTP-5

12,13

1,2,3

4

slide11

August 6, 2004

Mobile MTP-5

Stationary MTP-5

Time variation

August 7, 2004

Space variation

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Particular results of immediate comparisons of Mobile and Stationary devices August 6, 2004

N10

N0

N1

N0

N2

N0

N11

N0

N5

N0

N12

N0

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Vertical temperature gradient g [degree/100 m]

g = (Th+1-Th)*2

Temperature difference [OC]

dT = TMTPM-5-TMTP-5

August 6, 2004

slide15

Vertical temperature gradient g [degree/100 m]

g = (Th+1-Th)*2

Temperature difference [OC]

dT = TMMTP-5-TMTP-5

August 7, 2004

slide16

September 1, 2004

Temperature profile measured

by MMTP-5

12,13

1,2,3

4

slide17

Vertical temperature gradient g [degree/100 m]

g = (Th+1-Th)*2

Temperature difference [OC]

dT = TMMTP-5-TMTP-5

September 1, 2004

slide18

October 16-17, 2004

Temperature profile measured

by MMTP-5

12,13

1,2,3

4

slide19

Vertical temperature gradient g [degree/100 m]

g = (Th+1-Th)*2

Temperature difference [OC]

dT = TMMTP-5-TMTP-5

October 16-17, 2004

slide20

October 17-18, 2004

Temperature profile measured

by MMTP-5

12,13

1,2,3

4

slide21

Vertical temperature gradient g [degree/100 m]

g = (Th+1-Th)*2

Temperature difference [OC]

dT = TMMTP-5-TMTP-5

October 17-18, 2004

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Conclusion

  • The measurements of temperature stratification in the Nijny-Novgorod industrial agglomeration carried out by means of mobile (MMTP-5) and stationary temperature profilers MTP-5 showed:
  • Mobile measuring temperature profiler MMTP-5 allows to investigate the spatial variability of atmospheric boundary layer temperature stratification.
  • In the inspected territory it was observed 3-5 sufficiently well resolved and steady zones distinguishing by the thermal structure of ABL. These zones are coupled with the orographical features of the city. The sizes and internal structure of these zones depended on the synoptic situation.
  • The zone of representative using of stationary MTP-5 data for the forecast of bad weather conditions (BWC) was determined on the basis of data obtained during these measurements. As consequent from the analysis, the data of stationary MTP-5 can be used regularly in the forecast of BWC within the radius 6-8 km. The extending of forecast to entire territory on the city and its suburb is possibly only under the specified synoptic conditions.
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Mobile system for atmospheric temperature profile monitoring: mobile MTP-5

Thanks a lot for Your Attention!

THE END