Results 1 to 10 of about 14,831,698 (353)

A degree-day model for forecasting adult phenology of Popillia japonica (Coleoptera: Scarabaeidae) in a temperate climate. [PDF]

open access: yesFront Insect Sci, 2022
Japanese beetle, Popillia japonica (Newman), was first detected in the United States in New Jersey in 1916. The beetle gradually spread to the Midwest U.S. region, and was first confirmed in Minnesota in the late 1960’s.
Ebbenga DN   +3 more
europepmc   +2 more sources

Heating degree day spatial datasets for Canada [PDF]

open access: yesData in Brief, 2023
Heating degree days (HDD) represent a concise measure of heating energy requirements used to inform decision making about the impact of climate change on heating energy demand.
Heather MacDonald   +5 more
doaj   +2 more sources

The influence of diurnal temperature variation on degree-day accumulation and insect life history. [PDF]

open access: yesPLoS One, 2015
Ectotherms, such as insects, experience non-constant temperatures in nature. Daily mean temperatures can be derived from the daily maximum and minimum temperatures.
Chen S   +3 more
europepmc   +2 more sources

A simple physics-based improvement to the positive degree day model

open access: yesJournal of Glaciology, 2018
Meltwater is important to understanding glacier health and dynamics. Since melt measurements are uncommon, ice ablation estimates are often based on models including the positive degree day (PDD) model.
VICTOR C. TSAI, XIAOZHOU RUAN
doaj   +2 more sources

Estimating degree-day factors from MODIS for snowmelt runoff modeling [PDF]

open access: yesHydrology and Earth System Sciences, 2014
Degree-day factors are widely used to estimate snowmelt runoff in operational hydrological models. Usually, they are calibrated on observed runoff, and sometimes on satellite snow cover data.
Z. H. He   +3 more
doaj   +2 more sources

Estimating degree-day factors of snow based on energy flux components

open access: yesThe Cryosphere, 2023
. Meltwater from mountainous catchments dominated by snow and ice is a valuable source of fresh water in many regions. At mid-latitudes, seasonal snow cover and glaciers act like a natural reservoir by storing precipitation during winter and releasing it
M. Ismail   +4 more
semanticscholar   +1 more source

Rice (Oryza sativa L.) Growth Modeling Based on Growth Degree Day (GDD) and Artificial Intelligence Algorithms

open access: yesAgriculture, 2022
Rice (Oryza sativa L.) growth prediction is key for precise rice production. However, the traditional linear rice growth forecasting model is ineffective under rapidly changing climate conditions.
Li-Wei Liu   +5 more
semanticscholar   +1 more source

Temperature-Dependent Development of the Post-Diapause Periods of the Apricot Seed Wasp Eurytoma maslovskii (Hymenoptera: Eurytomidae): An Implication for Spring Emergence Prediction Models

open access: yesInsects, 2022
The present study investigates the influence of temperature on the development of Eurytoma maslovskii after a diapause break up until adulthood. The insect development rate was fitted to both linear and nonlinear models to estimate thermal bioparameters,
Hai Nam Nguyen   +3 more
doaj   +1 more source

Positive degree-day sums in the Alps: a direct link between glacier melt and international climate policy

open access: yesJournal of Glaciology, 2022
Annual balances of eight alpine glaciers were slightly negative for 1961–90 and highly negative for 1991–2018. We explain this by changes in positive degree-day sums and summer temperatures extrapolated to the median altitudes of the glaciers.
R. Braithwaite, P. Hughes
semanticscholar   +1 more source

Degree-Day Index for Estimating the Thermal Requirements of a Greenhouse Equipped with an Air-Earth Heat Exchanger System [PDF]

open access: yesJournal of Agricultural Machinery, 2021
In this research, an attempt was made to utilize an Earth-Air Heat Exchanger (EAHE) system as a source of shallow geothermal energy to provide thermal demands of a commercial greenhouse located in Alborz province, Iran.
H Faridi   +3 more
doaj   +1 more source

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