scholarly journals Occurrence of hail storms and strategies to minimize its effect on crops

MAUSAM ◽  
2021 ◽  
Vol 68 (1) ◽  
pp. 75-92
Author(s):  
N. CHATTOPADHYAY ◽  
S. SUNITHA DEVI ◽  
GRACY JOHN ◽  
V. R. CHOUDHARI
Keyword(s):  
Tamil Nadu ◽  
India Meteorological Department ◽  
Crop Damage ◽  
Extreme Weather Events ◽  
Maximum Probability ◽  
Probability Of Occurrence ◽  
Horticultural Crops ◽  
The North ◽  
Weather Events ◽  
Rabi Crops

Among the extreme weather events hailstorm in recent past caused significant crop damage across the country. In 2014 and 2015 unseasonal rains and hailstorms during March and April damaged rabi crops as well as horticultural crops extensively in many parts of the country. In this paper, a detailed analysis of occurrence of hailstorm in four homogenous regions of India during past 35 years from 1981 to 2015 has been made, to find out the climatological and favourable synoptic aspects associated with hailstorms so that timely issuing of warning and Agromet Advisories could minimize the crop damage/loss. Maximum hailstorms were observed to have occurred in Maharashtra (31 years) during the period of study with highest occurrence of 11 days during 24 February to 14 March, 2014. Also Maharashtra is more prone to hailstorms than other States in the country with maximum probability of occurrence         (91-95%) while the probability of occurrence (6-10%) is least in Gujarat, Chhattisgarh, Tamil Nadu, Tripura, Meghalaya, Sikkim and Nagaland. The significant synoptic situations associated with occurrence of hailstorms are found to be the north-south line of wind discontinuity causing convective activity and systems in westerlies. The information generated in this study was found to be very useful in minimizing crop loss through operational agromet services launched by the India Meteorological Department/Ministry of Earth Sciences in collaboration with the Agromet Field Units (AMFUs) located at State Agricultural Universities and institutes of ICAR and IITs under the project Gramin Krishi Mausam Sewa (GKMS).  

scholarly journals Effect of Extreme Weather Events on the Sedimentation of the Bay of Samaná, Dominican Republic (1900–2016)

2019 ◽  
Vol 11 (3) ◽  
pp. 56 ◽  
Author(s):  
Ramón A. Delanoy ◽  
Misael Díaz-Asencio ◽  
Rafael Méndez-Tejeda
Keyword(s):  
Accumulation Rate ◽  
Marine Species ◽  
Extreme Weather ◽  
Extreme Weather Events ◽  
Rainfall Regime ◽  
Mountainous Area ◽  
Mountain Range ◽  
The South ◽  
The North ◽  
Weather Events

The Bay of Samaná, formed by tectonism and sedimentation, is delimited to the north by the peninsula of the same name, to the south by the north slope of the Eastern Mountain Range and Los Haitises National Park, to the east by the Atlantic Ocean, and to the west by the ancient Gran Estero, today the Lower Yuna. There follows a process of continuous degradation by the existing tectonic forces and the sediment contributions by the Yuna, Yabón, and La Yeguada rivers to the south as well as by the landslides of the mountainous area of the Samaná Peninsula, during periods of storms and hurricanes. The coastal area of Samaná Bay has altered by 2.17 km2 at the mouth of the Yuna River from 2003–2015. The high turbidity level has affected coral reefs and marine species.  The  mangroves  are  lost  faster  than  they  are  regenerated  by  the  coastline’s change. Variations in the elemental compositions of calcium and iron show the terrigenous influence on the dynamics of the bay during Extreme Weather Events (EWP) in the river basins that flow into it. Abrupt changes in the rainfall regime produced an equal change in the estuary sedimentation regime, according to the 210Pb. In the 2007–2016 period, a column of sediment that reached 38 cm and a 12 cm to 8.4 km column were deposited 4 km southeast of the municipality of Sánchez and east of the mouth of the Yuna River. The Sedimentary Accumulation Rate is very high, and the content of heavy metals exceeds the threshold values of Table SQuirt.

scholarly journals Consequences of Climate Change Impacts and Incidences of Extreme Weather Events in Relation to Crop Production in Bhutan

2020 ◽  
Vol 12 (10) ◽  
pp. 4319 ◽  
Author(s):  
Ngawang Chhogyel ◽  
Lalit Kumar ◽  
Yadunath Bajgai
Keyword(s):  
Climate Change ◽  
Crop Production ◽  
Climatic Factors ◽  
Climate Change Impacts ◽  
Extreme Weather ◽  
Crop Damage ◽  
Extreme Weather Events ◽  
Cropping Pattern ◽  
The People ◽  
Weather Events

Being a country in the Himalayas, Bhutan is highly prone to the vagaries of weather events that affect agricultural production and the subsequent livelihood of the people. To identify the main issues that affect crop production and the decisions of farmers, a survey was conducted in three different agro-ecosystems in Bhutan. Our key findings indicate that farming and the decisions of farmers were largely affected by different climatic and non-climatic factors. These were in descending order of importance: irrigation availability > farm labour > crop seasonality > crop damage (climatic) > land holding > crop damage (wildlife) > crop damage (diseases and pests). The most important consequences of climate change impacts were the drying of irrigation sources (4.35) and crop losses due to weather events (4.10), whereas land fallowing, the occurrence of flood and soil erosion, weed pressure and changes in cropping pattern (with mean ratings of 2.53–3.03) experienced lesser consequences. The extreme weather events, such as untimely rains, drought and windstorms, were rated as the ‘most common’ to ‘common’ occurrences, thus inflicting a crop loss of 1–19%. These confirm our hearsay knowledge that extreme weather events have major consequences on irrigation water, which is said to be either drying or getting smaller in comparison to the past. Therefore, Bhutan must step up its on-ground farmer-support system towards improving the country’s food production, whilst embracing climate smart farm technologies for adapting to the impacts of change.

scholarly journals Real time implementation of agricultural contingency plans to cope with weather aberrations in Indian agriculture

MAUSAM ◽  
2021 ◽  
Vol 67 (1) ◽  
pp. 183-194
Author(s):  
CH. SRINIVASA RAO RAO ◽  
G. RAVINDRA CHARY ◽  
N. RANI ◽  
V. S. BAVISKAR
Keyword(s):  
Real Time ◽  
Extreme Events ◽  
Agricultural Production ◽  
Extreme Weather Events ◽  
Horticultural Crops ◽  
Indian Agriculture ◽  
Weather Events ◽  
Overall Stability ◽  
Droughts And Floods ◽  
Seasonal Droughts

Weather aberrations impact agriculture and allied sectors in one or other parts of the India round the year. Seasonal droughts and extreme weather events in 21st century have caused alarming losses not only in agricultural production but also horticulture, livestock, poultry and fisheries. ICAR-CRIDA, SAUs and DAC, MoA, GoI, prepared more than 580 district level agriculture plans within formation on contingency measures for sustaining higher agriculture production and to cope with extreme events. Real-time contingency planning (RTCP) is being conceptualized and implemented at micro level in farmers’ fields in this country. RTCP implementation during delayed onset of monsoon, seasonal droughts and floods resulted in better crop performance, higher agricultural production, better incomes and overall stability in house-hold livelihoods. In this paper, the real-contingency measures to cope with extreme events for management of horticultural crops, livestock, poultry and fisheries are proposed. Further, the preparedness for RTCP implementation with policy initiatives is also suggested.

Cost reductions through converting platforms from permanently manned to manned-evacuated

2020 ◽  
Vol 60 (2) ◽  
pp. 637
Author(s):  
Matt Keys
Keyword(s):  
Action Plan ◽  
Effective Means ◽  
Cost Effective ◽  
Extreme Weather ◽  
Extreme Weather Events ◽  
Risk Level ◽  
Original Design ◽  
Safety Level ◽  
The North ◽  
Weather Events

Most platforms in Australia and the North Sea were originally designed to be permanently manned facilities. As long-term predictions of extreme weather events have intensified, it has become challenging to demonstrate acceptable life safety levels. Extreme weather events have been an ongoing area of development. With an increasing database of information and potential climate change effects, the intensity of the environmental conditions for even recently installed facilities have increased significantly. The Gulf of Mexico estimate of environmental loading has increased 63% in the past 15 years alone, with similar increases in all other regions. To continue to operate these facilities as permanently manned while maintaining the original design safety level requires extensive strengthening. In cases assessed, associated costs have been shown to easily exceed US$100 million. With the advancements in forecasting, facilities now have adequate information available to ensure a facility is evacuated, shut in or both before any major risk to the safety of the personnel and environment is intolerable. The platform response to a forecast can be referred to as a severe weather action plan (SWAP). These can be shown to be a more cost-effective means than strengthening the asset, and most assets may only require evacuation or shut-in once in their lifetime. The benefits of a manned-evacuated platform also extend to new platforms where the cost of the jacket or hull can be reduced to achieve a target risk level provided a SWAP is in place.

scholarly journals European Climate Extremes and the North Atlantic Oscillation

2008 ◽  
Vol 21 (1) ◽  
pp. 72-83 ◽  
Author(s):  
Adam A. Scaife ◽  
Chris K. Folland ◽  
Lisa V. Alexander ◽  
Anders Moberg ◽  
Jeff R. Knight
Keyword(s):  
North Atlantic Oscillation ◽  
North Atlantic ◽  
General Circulation ◽  
Climate Model ◽  
Circulation Model ◽  
Extreme Weather Events ◽  
The North ◽  
Weather Events ◽  
The North Atlantic ◽  
The North Atlantic Oscillation

Abstract The authors estimate the change in extreme winter weather events over Europe that is due to a long-term change in the North Atlantic Oscillation (NAO) such as that observed between the 1960s and 1990s. Using ensembles of simulations from a general circulation model, large changes in the frequency of 10th percentile temperature and 90th percentile precipitation events over Europe are found from changes in the NAO. In some cases, these changes are comparable to the expected change in the frequency of events due to anthropogenic forcing over the twenty-first century. Although the results presented here do not affect anthropogenic interpretation of global and annual mean changes in observed extremes, they do show that great care is needed to assess changes due to modes of climate variability when interpreting extreme events on regional and seasonal scales. How changes in natural modes of variability, such as the NAO, could radically alter current climate model predictions of changes in extreme weather events on multidecadal time scales is also discussed.

scholarly journals Heavy Precipitation Events in Marmara Region and connections with the North Atlantic and Arctic Oscillation Patterns

2016 ◽  
Vol 6 (4) ◽  
pp. 1 ◽  
Author(s):  
Sevinc A. Sirdas ◽  
Ali Behzat Diriker ◽  
Vinay Kumar
Keyword(s):  
Linear Regression ◽  
North Atlantic ◽  
Arctic Oscillation ◽  
Linear Regression Analysis ◽  
Heavy Precipitation ◽  
Extreme Weather Events ◽  
Marmara Region ◽  
The North ◽  
Weather Events ◽  
The Relationship

The prediction and understanding of the extreme weather events became one of the top priorities of the forecasting centers. To analyze the heavy rainfall events, the data from reanalysis and station datasets are utilized. The linear regression analysis and principle component analysis (PCA) are applied on precipitation, temperature, Arctic Oscillation Indices (AO) and North Atlantic Oscillation Indices (NAO) datasets. The results indicate that the relationship between these variables can be expressed neither by linear regression nor by PCA, which falls in short in capturing the complexity of the problem. The results indicate the importance of low-level jet in two cases out of three cases considered here.

scholarly journals FASAL concept in meeting the requirements of assessment and forecasting crop production affected by extreme weather events

MAUSAM ◽  
2021 ◽  
Vol 67 (1) ◽  
pp. 93-104
Author(s):  
JAI SINGH PARIHAR
Keyword(s):  
Remote Sensing ◽  
Crop Production ◽  
Remote Sensing Data ◽  
Extreme Weather ◽  
Crop Damage ◽  
Extreme Weather Events ◽  
Production Forecast ◽  
Sensing Data ◽  
Production Forecasting ◽  
Weather Events

The research in remote sensing application in India started first in agriculture way back in 1969. With the improvement in satellite sensors, data processing algorithms, models and computational power over time, this research culminated into development of operational projects of CAPE and FASAL, tackling an important issue of operationally providing pre-harvest crop production forecast to stakeholders. This review paper details the sequential developments in the use of remote sensing data for crop production forecasting. The scientific developments in the use of single and multi-temporal optical and microwave satellite images for crop identification and yield estimation in India have been reviewed.  The case studies on use of remote sensing data for crop assessment under extreme weather events are also presented. These include the assessment of crop damage due to extreme weather events of floods, drought, and hailstorm. Examples on use of remote sensing for crop damage assessment due to pest and diseases and forecasting their incidence using satellite derived weather parameters are reviewed.

scholarly journals Botanic Garden Profile Inverewe: gardening on the edge

2020 ◽  
pp. 19-35
Author(s):  
Kevin Frediani
Keyword(s):  
Extreme Weather Events ◽  
North Coast ◽  
Management Approach ◽  
Scottish Highlands ◽  
Herbaceous Perennials ◽  
The North ◽  
Weather Events ◽  
Plant Collection ◽  
Experimental Approaches ◽  
The Uk

Set in the heart of the Scottish Highlands, Inverewe is one of the most spectacular garden locations in the UK. Situated beside the A382 on the North Coast 500 tourist route, the property receives over 100,000 visitors each year, drawn to see a diversity of plants and to enjoy the breathtaking backdrop of mountains and seascape it affords. Since its first plantings in 1864, the property has been a centre for experimental approaches to establishing and growing tender woody and herbaceous perennials, while a diaspora of alumni have gone on to fulfil prominent roles in the horticultural industry over the years. The garden today covers approximately 22 ha of mainly woodland gardens, renowned for the diversity of their designed elements and whose conservation management is based on a thorough understanding, appreciation and analysis of the garden’s historical development and its significance in local, regional and national contexts.In recent years, Inverewe has faced a number of challenges related to the growing impact of global change, with increased occurrences of extreme weather events, and emergent pest and disease incidents associated with climate change and the movement of plants and their vectors, which include human-aided transport of problems between sites. In this context, this article provides a lens on the drivers of change that the plant collection is facing in the early decades of the 21st century. After an introduction to the garden, its evolved collections and management approach, three case studies are highlighted as examples of emerging threats to Inverewe as a garden and work of art. Inverewe is presented as a landscape that endures through adaptation to social, economic and, increasingly, environmental challenges that shape the direction it takes as a garden and plant collection growing on the edge.

scholarly journals Climate-change studies in the western Himalaya

2010 ◽  
Vol 51 (54) ◽  
pp. 105-112 ◽  
Author(s):  
M.S. Shekhar ◽  
H. Chand ◽  
S. Kumar ◽  
K. Srinivasan ◽  
A. Ganju
Keyword(s):  
Climate Change ◽  
Indian Subcontinent ◽  
Western Himalaya ◽  
Extreme Weather Events ◽  
The North ◽  
Western Disturbances ◽  
Current Trends ◽  
Weather Events ◽  
Region Data

AbstractThe high Himalayan mountains in the north of India are important sources for generating and maintaining the climate over the entire northern belt of the Indian subcontinent. They also influence extreme weather events, such as the western disturbances over the region during winter. The work presented here describes some current trends in weather and climate over the western Himalaya and suggests some possible explanations in the context of climate change. The work also shows how the special features of Indian orography in the western Himalaya affect climate change in the long term, changing the pattern of precipitation over the region. Data analysis of different ranges of the western Himalaya shows significant variations in temperature and snowfall trends in the past few decades. Possible explanations for the changing climate over the western Himalaya are proposed, in terms of variations in cloudiness. The possible effects of climate change on the number of snowfall days and the occurrences of western disturbances over the western Himalaya are also analysed.

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