II. CLIMATIC HIGHLIGHTS for the PERIOD 1St to 10Th DECEMBER, 2019
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OBSERVATOIRE NATIONAL SUR Dekadal Bulletin from 1st to 10th December, 2019 LES CHANGEMENTS CLIMATIQUES Bulletin no 28 NATIONAL OBSERVATORY ON CLIMATE CHANGE DIRECTION GENERALE - DIRECTORATE GENERAL ONACC ONACC-NOCC www.onacc.cm; email: [email protected]; Tel (237) 693 370 504 CLIMATE ALERTS AND PROBABLE IMPACTS FOR THE PERIOD 1st to 10th DECEMBER, 2019 Supervision NB: It should be noted that this forecast is Prof. Dr. Eng. AMOUGOU Joseph Armathé, Director, National Observatory on Climate Change developed using spatial data from: (ONACC) and Lecturer in the Department of Geography at the University of Yaounde I, Cameroon. - the International Institute for Climate and Ing. FORGHAB Patrick MBOMBA, Deputy Director, National Observatory on Climate Change Society (IRI) of Columbia University; (ONACC). - the National Oceanic and Atmospheric ProductionTeam (ONACC) Administration (NOAA); Prof. Dr. Eng. AMOUGOU Joseph Armathé, Director, ONACC and Lecturer in the - AccuWeather (American Institution Department of Geography at the University of Yaounde I, Cameroon. specialized in meteorological forecasts); Eng. FORGHAB Patrick MBOMBA, Deputy Director, ONACC. - the African Centre for Applied BATHA Romain Armand Soleil, Technical staff, ONACC. Meteorology for Development (ACMAD). ZOUH TEM Isabella, MSc in GIS-Environment. - Spatial data for Atlantic Ocean Surface NDJELA MBEIH Gaston Evarice, M.Sc. in Economics and Environmental Management. Temperature (OST) as well as the intensity MEYONG René Ramsès, M.Sc. in Climatology/Biogeography. ELONG Julien Aymar, M.Sc. Business and Environmental law. of the El-Niño episodes in the Pacific. ANYE Victorine Ambo, Administrative staff, ONACC - ONACC’s research works. I. INTRODUCTION This ten-day alert bulletin n°28 reveals the climatic conditions and climate forecasts developed for the five Agro-ecological zones for the period December 1 to 10, 2019. It also highlights the potential risks and impacts, observable in certain socio-economic sectors in the five agro-ecological zones of Cameroon. This period is characterized by the gradual installation of the Harmattan in the Far North and North Regions and the displacement of the Inter-Tropical Front (ITF) towards the southern part of the country. II. CLIMATIC HIGHLIGHTS FOR THE PERIOD 1st to 10th DECEMBER, 2019 II.1. For Temperatures We expect: - an overall increase from 0.6°C to 1.3°C in the average maximum temperatures compared to the historical average recorded for the same period from 1950 to 2015 and from 0.5 to 1°C compared to that registered during the previous dekad from November 21 to 30, 2019. However, particular attention should be paid to the following localities; - Mindif and Yagoua in the Far North region; - Garoua, Pitoa, Lagdo, Rey-Bouba and Tchollire in the North region; - Banyo, Tibati and Meiganga in the Adamawa region; - Bafia, Nanga Eboko, Obala, Nkoteng, Eseka, Mbandjock, Yaounde, Akonolinga and Mbalmayo in the Centre region; - Betare Oya, Belabo, Bertoua, Batouri, Abong-Mbang and Mindourou in the East region; - Foumban, Foumbot, Bafang, Tonga, Bangangte and Dschang and in the West region; - Mundemba, Kumba, and Mamfe in the South West region; - Douala, Dizangue, Edea, Manjo and Melong in the Littoral region; - Sangmelima and Kribi in the South region. - an increase in the number of days with temperatures above 35°C throughout the national territory. - an overall decrease from 0 to 0.4°C in average minimum temperatures compared to the historical average recorded for the same period from 1950 to 2015, and a decrease from 0.4 to 0.8°C compared to the average recorded during the dekad from November 21 to 30, 2019 in the following localities; - Maroua, Mindif, Kaele and Bogo in the Far North region; - Guider, Pitoa and Garoua in the North region; - Meiganga, Banyo and Ngaoundere in the Adamawa region; - Garoua Boulai, Betare Oya, Bertoua, Batouri, Abong Mbang and Mindourou in the East region; - Kumbo, Bamenda, Fundong, Santa and Bali in the North West region; - Bafoussam, Dschang, Bazou, Bafang and Mbouda in the West region. - Fontem, Mundemba and Kumba in the South West region; - Melong in the Littoral region. - an increase in daily thermal differences in the localities of Bogo, Mora and Mokolo in the Far North region; Tchollire, Guider, and Rey Bouba in the North region; Meiganga, Banyo and Ngaoundere in the Adamawa region; Kumbo, Bamenda, Fundong, Wum and Bali in the North West region; Bafoussam, Dschang and Mbouda in the West region. II.2. For Precipitations Rainfall amounts are expected to be around the mean recorded during the dekad from 11th to 20th November 2019 in the localities of: - Makary, Kousseri, Waza, Maroua, Mora, Maga, Bogo, Mindif, Gamboura, Yagoua and Kaele in the Far North region; - Guider, Dembo, Pitoa, Garoua, Lagdo, Rey Bouba, Tchollire, Gamboura, Mindif, Kaele and Yagoua in the North region; - Tignere and Ngaou Mbol kognoli in the Adamawa region; - Eseka, Monatele, Ngoro, Bafia and Nanga Eboko in the Centre region; - Kribi and Nyabizan in the South region; - Bamendjing, Bafoussam, Foumban, Mbouda, Foumbot, Bafang, Bangangte, Tonga, Dschang and Bazou in the West region. - Tiko, Bamusso, Idenau, Mundemba, Fontem, Kumba, Ekok, Eyumodjock, Ekang, Bamusso, Idenau, Mutenguene, Buea and Limbe in the South West region; - Edea, Mouanko, Dizangue, Melong, Nkongsamba, Manjo, Loum, Penja, Mbanga, Douala and Yabassi, in the Littoral region. ONACC| 1 Rainfall amounts are expected to be lower than the mean recorded during the dekad from 21st to 30th November 2019 in the localities of: - Banyo, Meiganga, Tibati, Kongolo and Mbakaou in the Adamawa region; - Ngambe Tikar, Mbalmayo, Nkoteng, Mbandjock, Obala, Yaounde, Akonolinga and Yoko in the Centre region. - Abong-Mbang, Batouri, Bertoua, Mbitom, Betare-Oya, Belabo, Mintoum, Lomie, Ngoila, Yokadouma, Libongo, Mambele, Moloundou, Belabo, Batouri, Libongo and Kika in the East region; - Zoetele, Djoum, Akom II, Ebolowa, Lolodorf and Sangmélima in the South region; - Benakuma and Bali in the North West region; They are expected to be around the mean in Tiko, Bamusso, Idenau, Mundemba, Fontem, Kumba, Ekok, Eyumodjock, Ekang, Bamusso, Idenau, Mutenguene, Buea and Limbe in the South West region. III. Climate forecasts for the five agro-ecological zones for the period from 1st to 10th December, 2019 e) In the monomodal rainfall forest zone For precipitations 1) - Precipitation amounts around the mean recorded in the dekad from We expect: 21st to 30th November 2019 in Tiko, Bamusso, Mundemba, Fontem, a) In the Sudano-sahelian zone Kumba, Ekok, Eyumodjock, Ekang, Bamusso, Idenau, Mutenguene, - Precipitation amounts around the mean recorded in the dekad st th Buea and Limbe and they would be lower than the mean recorded in from the 21 to 30 November, 2019 in the localities of Makary, the localities of Mamfe in the South West region. K ousseri, Waza, Maroua, Mora, Maga, Bogo, Mindif, Gamboura, - Precipitation amounts around the mean recorded in the dekad from Yagoua and Kaele in the Far North region. st th 21 to 30 November 2019 in Edea, Mouanko, Dizangue, Melong, - Precipitation amounts around the mean that was recorded in the Nkongsamba, Manjo, Loum, Penja, Mbanga, Douala and Yabassi in st th dekad from the 21 to 30 November, 2019 in the localities of the Littoral region. Guider, Dembo, Pitoa, Garoua, Lagdo, Rey Bouba Gamboura, NB : Mindif, Kaele, Yagoua and Tchollire in the North region; (1) During this period, it is expected that morning and night fog b) In the Guinean high savannah zone will increase in some localities on the outskirts of large cities Precipitation amounts around the mean recorded in the dekad and on the hillsides of the Centre, South, East, North West from the 21st to 30th November, 2019 in the localities of Mbe, and South West regions. Ngaoundere, Tignere, Banyo, Meiganga, Tibati, Kongolo, Ngaou (2) particular attention should be paid during this period to the Mbol, Kognoli and Mbakaou in the Adamawa region. localities of Kribi and Mouanko, for which the drying of the c) In the bimodal rainfall forest zone soil could lead to heavy rains. - Precipitation amounts lower than the mean recorded in the dekad from 21st to 30th November 2019 in the localities of Eseka, Monatele, Ngoro, Bafia and Nanga Eboko. They would be lower than the mean recorded for the same period in the localities of Ngambe Tikar, Mbalmayo, Nkoteng, Mbandjock, Obala, Yaounde, Akonolinga and Yoko in the Centre region; - Precipitation amounts lower than the mean recorded in the dekad from 21st to 30th November 2019 in Abong Mbang, Batouri, Bertoua, Mbitom, Mintoum, Belabo, Batouri, Ngoila, Mambele, Libongo, Betare Oya, Yokadouma, Lomie, Mouloundou and Kika in the East region. - Precipitation amounts around the mean recorded in the dekad from 21st to 30th November 2019 in the localities of Kribi, Nyabizan, and they would be lower than the mean recorded in the dekad from 21st to 30th November 2019 in Zoetele, Djoum, Akom II, Ebolowa, Lolodorf and Sangmelima in the South region. d) In the high plateau zone - Precipitation amounts around the mean recorded in the dekad from 21st to 30th November 2019 in the localities of Bamendjing, Bafoussam, Foumban, Mbouda, Foumbot, Bafang, Bagangte, Tonga, Dschang and Bazou in the West region. - Precipitation amounts around the mean recorded in the dekad Figure 1: Distribution of rainfall for the current dekad compared to that of st th from 21 to 30 November 2019 in Widikum, Ebang, Menka, the previous dekad from November 21 to 30, 2019 Batibo, Guzang, Munkep, Esu, Bamenda, Benakuma, Wum, Source : ONACC, December 2019 Kumbo, Santa, Bali, Bambalang and Fundong and they would be NB: This dekad from 1 to 10 December 2019 corresponds to the extension lower than the mean recorded in the dekad from 21st to 30th of the dry season in the Sudano-Sahelian zone; to the effective installation of November 2019 in the localities of Benakuma and Bali in the the dry season in the Guinean High Savannah zone, the Highlands zone and NorthLimbe West region.