Variation of main rainy‐season precipitation in eastern China and relevance to regional warming

2020 ◽  
Author(s):  
Li Liu ◽  
Xiaojuan Wang ◽  
Guolin Feng ◽  
Muhammad Mubashar Dogar ◽  
Feng Zhang ◽  
...  
Keyword(s):  
Rainy Season ◽  
Eastern China ◽  
Regional Warming ◽  
Main Rainy Season

Pollination of Amorphophallus johnsonii (Araceae) by carrion beetles (Phaeochrous amplus) in a Ghanaian rain forest

1996 ◽  
Vol 12 (3) ◽  
pp. 409-418 ◽  
Author(s):  
Daniel D. N. Beath
Keyword(s):  
Rain Forest ◽  
Rainy Season ◽  
Male Inflorescence ◽  
Large Numbers ◽  
Female Phase ◽  
Male Phase ◽  
Carrion Beetles ◽  
Main Rainy Season

ABSTRACTAmorphophallus johnsonii (N. E. Brown) flowers during April in the main rainy season in Ghana. Anthesis starts at dusk with fluid oozing from the upper spadix accompanied by a strong aminoid odour. Just after dark large numbers of carrion beetles (Phaeochrous amplus) and occasional dung fly species (Hemigymnochaeta unicolor and Paryphodes tigrinus) visit the inflorescences. The beetles become trapped in the lower spathe overnight and remain in the spadix until the following evening. Between 1630 and 1645 h the following day, the anthers produce long threads of sticky pollen. The trapped beetles escape just after dark by crawling up the spadix, past the dehisced anthers and fly away from the spadix tip. Marked beetles were seen to transfer pollen from male phase to female phase inflorescences. Successful fertilisation was only effected if pollen was transferred on the same night from a male inflorescence 30 m or less away. Pollen is psilate and typical of beetle pollinated Araceae. Berries ripen approximately 70 d after fertilization and ripen basisetally in the infructescence.

scholarly journals Climate resources analysis for use of planning in crop production and rainfall water management in the central highlands of Ethiopia, the case of Bishoftu district, Oromia region

2010 ◽  
Vol 7 (3) ◽  
pp. 3733-3763 ◽  
Author(s):  
F. Yemenu ◽  
D. Chemeda
Keyword(s):  
Markov Chain ◽  
Standard Deviation ◽  
Coefficient Of Variation ◽  
Rainy Season ◽  
Growing Season ◽  
Entire Study ◽  
Dry Spell ◽  
The Mean ◽  
Central Highlands ◽  
Main Rainy Season

Abstract. Agricultural practices and water resources management in the central highlands of Ethiopia is highly dependant and associated with climatic resources and their pattern and hence wise use of those resources is a priority for the region. Accordingly, a study was conducted to asses and critically quantity the climate resources of the central high lands of Ethiop, Bishoftu district. Thirty three years of weather record data has been used for the work. The onset, duration and end of the growing seasons were defined and quantified based on FAO and Reddy models while the dry and wet spell distributions and the drought events were calculated using the Markov chain models and the standardized precipitation index (SPI) respectively. The results revealed that the mean onset of the main (Kiremt) growing season was found to occur during the second meteorological decade and ended during the end of September. Similarly, though unreliable and only few occurred during the entire study period, the mean onset of the shorter (Belg) season was found to occur during the beginning of the first decade of April. The length of the growing season during the main rainy season, (Kiremt,) ranged from 112 to 144 days with a standard deviation of 9.6 days and coefficient of variation of 7.5%. However, the mean growing length during the Belg season was found to be 22.4 days with a standard deviation of 27 days and coefficient of variation of 122%. The results of analysis obtained both from the Markov Chain and Reddy models indicated higher probabilities of dry spell occurrences during the shorter season (Belg) but the occurrences of the same in the main rainy season (Kiremt) was very minimal. Like wise, the SPI model detected some drought events ranging from mild to severe classes in both seasons based on one a month time scale analysis. A considerable attention of maximizing crop harvest during the main rainy season is practically important.

scholarly journals AVAILABILITY OF FEED RESOURCES FOR GOATS IN PASTORAL AND AGRO-PASTORAL DISTRICTS OF SOUTH OMO ZONE, ETHIOPIA

2017 ◽  
Vol 5 (3) ◽  
pp. 154-160
Author(s):  
Tekleyohannes Berhanu ◽  
Girma Abebe ◽  
Jameroen Thingtham ◽  
Sayan Tusdri ◽  
Somkiert Prasanpanich
Keyword(s):  
Rainy Season ◽  
Crop Residues ◽  
Survey Methods ◽  
Group Discussion ◽  
Feed Resources ◽  
Hot Dry Season ◽  
South Omo ◽  
Main Rainy Season ◽  
Western Ethiopia ◽  
Structured Questionnaire

A survey was conducted in Hamer and Bena-Tsemay pastoral and agro-pastoral districts of South Omo zone, south western Ethiopia in between January to May 2011 with the objective to describe availability of feed resource for goats. Data were collected from the two districts by informal and formal survey methods using focused group discussion and semi-structured questionnaire administered to 250 households. Natural pastures from rangelands are major feed sources for goats. Higher feed availability is reported in March to April (during the main rainy season). However, availability of feed extends up to October in Bena-Tsemay district due to the higher rainfall in the district.  In both districts, the hot dry season (November to February) is the period of feed scarcity and during which high mortality of goats have been reported. Crop residues and some food left over are also available for supplementing animals especially in the agro-pastoral areas. The efficiency of goat production in the studied districts could be increased by optimizing goats breeding season with the availability of feed resources.

scholarly journals Long-Term Changes in Rainfall over Eastern China and Large-Scale Atmospheric Circulation Associated with Recent Global Warming

2010 ◽  
Vol 23 (6) ◽  
pp. 1544-1562 ◽  
Author(s):  
Ping Zhao ◽  
Song Yang ◽  
Rucong Yu
Keyword(s):  
Tibetan Plateau ◽  
North Pacific ◽  
Rainy Season ◽  
Western North Pacific ◽  
Southern China ◽  
Eastern China ◽  
Northern China ◽  
Positive Trend ◽  
Eastern Tibetan Plateau

Abstract Using precipitation data from rain gauge stations over China, the authors examine the long-term variation of the durations of persistent rainfall over eastern China for the past 40 years. The variation in the regional rainfall was related to a change in the global-mean surface temperature from the relatively cold period of the 1960s–70s to the relatively warm period of the 1980s–90s. Compared to the cold period, the persistent rainfall in the warm period began earlier and ended later over southern China, lengthening the rainy season by 23 days, but it began later and ended earlier over northern China, shortening the rainy season by 14 days. This change in the durations of persistent rainfall contributed to the pattern of the long-term change in rainfall: southern floods and northern droughts. The earlier beginning of the rainy season over southern China was associated with a more westward subtropical high over the western North Pacific and a stronger low-level low near the eastern Tibetan Plateau during spring. On the other hand, the later ending of the rainy season over southern China and the shorter rainy season over northern China were related to a more westward subtropical high over the western Pacific and a weaker trough near the eastern Tibetan Plateau during summer. The snow cover over the Tibetan Plateau exhibited a positive trend in winter and spring, which increased the local soil moisture content and cooled the overlying atmosphere during spring and summer. The sea surface temperature over the tropical Indian Ocean and the western North Pacific also displayed a positive trend. The cooling over land and the warming over oceans reduced the thermal contrast between East Asia and the adjacent oceans. Moreover, the low-level low pressure system over East Asia weakened during summer. Under such circumstances, the East Asian summer monsoon circulation weakened, with anomalous northerly winds over eastern China. Correspondingly, the mei-yu front stagnated over the Yangtze River valley, and the associated pattern of vertical motions increased the rainfall over the valley and decreased the rainfall over northern China.

Extending the processing of cocoa beans into the rainy season and increasing production by application of newly developed drying methods

2017 ◽  
Author(s):  
Global Cocoa Farmers and Processing Firms and Processing Firms ◽  
IQUAIBOM AKPAN MEX (MEXICATEL SERVICES LIMITED)
Keyword(s):  
Rainy Season ◽  
Drying Methods ◽  
Cocoa Beans

EPIDEMIOLOGY, ECOLOGY AND PREVALENCE OF SOIL TRANSMITTED HELMINTHS FROM KOSHI REGION OF NORTH BIHAR.

2018 ◽  
Vol 24 (1) ◽  
Author(s):  
LAKSHMI CHOUDHARY ◽  
PRABHAWATI PRABHAWATI
Keyword(s):  
Relative Humidity ◽  
Ascaris Lumbricoides ◽  
Rainy Season ◽  
Climatic Factors ◽  
Trichuris Trichiura ◽  
Hookworm Infection ◽  
Soil Transmitted Helminths ◽  
High Incidence ◽  
Apparently Healthy

Prevalence of soil transmitted helminthes infections in apparently healthy school going children and other 528 people of different districts of Koshi regions of North Bihar were evaluated. Over all incidences of STHs infection was 39.39% during study. High incidence of STH was seen in the rainy season i.e., in the month of July and August, September, significantly higher (P<0.05) .The incidence of Ascaris lumbricoides was highest in the month of August (18.64%). The month of September was 15.25% followed by that of July (14.4%) and October with 10.16%. Also the incidence of hookworm registered the highest incidence in the month of June (19.27%) and lowest in the month of December (4.82%) during the study period. However prevalence of Trichuris trichiura was negligible and it was almost nil in the most of the months but was highest in month of September with 28.57% and lowest in October with 14.00% The climatic factors are responsible for soil transmitted helminthes which are temperature, rainfall and relative humidity. Ascariasis, Trichuriasis and Ancyclostomiasis (Hookworm infection) are found to be endemic in this region.

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