Ganbat.B, Agro meteorology Section

Size: px

Start display at page:

Download "Ganbat.B, Agro meteorology Section"

Caren McKinney
5 years ago
Views:

1 NATIONAL AGENCY FOR METEOROLOGY, HYDROLOGY AND ENVIRONMENT MONITORING OF MONGOLIA Ganbat.B, Agro meteorology Section OF INSTITUTE OF METEOROLOGY AND HYDROLOGY 2009 YEAR

Location Climate Northern Asia, between China and Russia Desert, continental Natural Dust storms, grassland and Hazards forest fires, drought, and zud, which is harsh winter conditions Area 1565000

2 Location Climate Northern Asia, between China and Russia Desert, continental Natural Dust storms, grassland and Hazards forest fires, drought, and zud, which is harsh winter conditions Area km 2 Mongolia is located in the Northern Hemisphere temperate zone. Situated at an average altitude of 1500 m above the sea level separated from the oceans, surrounded by high mountain chains that are blocking the wet winds, Mongolia has an extreme continental climate. The winter continues long with cold temperature but summer is hot and not so long. Winter lasts from November to late April, Spring May through June. Summer continued from July through to September. The average summer temperature is +20c (+65F). Winter is 20c ( 13F). The wind is m/s. The average rainfall mm. In Mongolia there are 250 sunny days a year, often with clear cloudless skies. Therefore Mongolia is known to the world as a country of Blue Sky, Chinggis

3 High mountain Taiga, Wetland Forest steppe Steppe Desert steppe Desert /Gobi/

4 Drought monitoring and assessment of its impact on pasture biomass are very important in Mongolia, whose economy strongly depends on livestock production. Drought is a weather related natural disaster and is consequence of deficit rainfall. Drought assessment using weather data is limited by insufficient density of weather stations or non availability of data in real time. Drought methods Based on stations daily data Estimates for Drought Monitoring in Mongolia / ground observation / Defining of Drought index derived from satellite data /RSDI/

Based on stations daily data Estimates for

5 1.Drought assessment using ground observation Location of the observation stations. Meteorological station Province border - Based on stations daily data Estimates for Drought Monitoring in Mongolia - Used summer condition of over 320 stations data(earth observation).

6 Summer condition 31 August 2008 Ground estimation of summer condition: This summer condition estimation based on plant growth, plant stage and pasture productivity 4-good summer condition (green color) plant growth is high, no much damage, plant stages are observed at normal time, pasture productivity is high 3-moderate drought (yellow color) plant growth is not even, growth is slow, pasture productivity is less than that during normal years, some plants have withered and are damaged 2-severe drought (orange color) plant stage is observed at a late time, some stages are not observed, very poor vegetation and pasture productivity is very low.

7 2. Defining of Drought index derived from satellite data /RSDI/ The RSDI is calculated by following formula. RSDI Drought severity assessment: The RSDI value gives the following classes as follow. ijk = NDVI NDVI max max ij ij NDVI NDVI ijk min ij RSDI value Drought intensity Color in map 0.20 non drought, summer condition is very good dark green non drought, summer condition is good light green non drought, around norm pink slight drought brown 0.80 severe drought yellow

8 Drought monitor result of the third decade.august by NOAA-18 satellite data Summer condition 31 August 2008

9 Drought maps, 2008

10 Agro-meteorological information bulletin To prepare Agro-meteorological information bulletin every 10 days, included the drought monitoring map. To provide agricultural meteorological information to the governments, ministries and users.

Drought occur frequently in Mongolia (1972-2000) Drought occurrence has being increased

11 Drought occur frequently in Mongolia ( ) Drought occurrence has being increased from north to south and east to west in Mongolia. Distribution of the frequency map of Drought

12 Fig.4 The summer condition (31 July, 2003) The summer condition (31 July, 2001) Summer condition, % good summer condition (70,2%) moderate drought (24,9%) severe drought (4.9%) Summer condition, % good summer condition (22,8%) moderate drought (47,9%) severe drought (29.4%)

13 To compare of NDVI and ground observation during 2002 and 2003 at different sites in Mongolia. Validation with field observation

14 THANK YOU FOR ATTENTION

The agroclimatic resource change in Mongolia

The agroclimatic resource change in Mongolia Azzaya D, Gantsetseg B, Munkhzul D Institute of Meteorology and Hydrology,Juulchny gudamj-5, Ulaanbaatar-46, Mongolia, 210646, meteoins@magicnet.mn, azzaya23@yahoo.com