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You searched for: Subject "seasonal variation" Remove constraint Subject: "seasonal variation"
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1. Field evaluation of fertigation performance for a drip irrigation system with different lateral layouts under low operation pressures

Author:
Zhen Wang; Zhihao Zhang; Jiusheng Li; Yanfeng Li
Source:
Irrigation science 2022 v.40 no.2 pp. 191-201
ISSN:
0342-7188
Subject:
seasonal variation,   etc   ; fertigation; microirrigation; water distribution;     Show all 4 Subjects
Abstract:
... For a drip irrigation system, different lateral layouts and water feeding modes may be used. Furthermore, the actual operating conditions may greatly deviate from the designed ones, deteriorating system performance of irrigation and fertigation. Field experiments were conducted to evaluate the seasonal variation of the hydraulic performance of three drip irrigation subunits with either single end ...
DOI:
10.1007/s00271-021-00760-0

2. Intraseasonal scale ensemble forecasts of precipitation and evapotranspiration for the Madeira River basin using different physical parameterizations

Author:
Weslley de Brito Gomes; Prakki Satyamurty; Francis Wagner Silva Correia; Sin Chan Chou; Leonardo Alves Vergasta; André de Arruda Lyra
Source:
Atmospheric research 2022 v.270 pp. 106086
ISSN:
0169-8095
Subject:
seasonal variation,   etc   ; basins; evapotranspiration; research; watersheds;     Show all 5 Subjects
Abstract:
... Eta Regional Model of CPTEC-INPE is used to obtain intraseasonal (30-day) 8-member ensemble forecasts over the Madeira River basin for the period 2002–2012. The initial and boundary conditions are taken from Atmospheric General Circulation Global Model in six members and from Global Coupled Ocean-Atmosphere Model in two members. The intraseasonal forecasts produced by dynamic downscaling with Eta ...
DOI:
10.1016/j.atmosres.2022.106086

3. Relative performance of CMIP5 and CMIP6 models in simulating rainfall in Peninsular Malaysia

Author:
Sahar Hadi Pour; Shamsuddin Shahid; Mohammed Mainuddin
Source:
Theoretical and applied climatology 2022 v.149 no.1-2 pp. 709-725
ISSN:
0177-798X
Subject:
seasonal variation,   etc   ; climate; climatology; probability distribution; rain; Malaysia;     Show all 6 Subjects
Abstract:
... This study evaluated the skills of global climate models (GCMs) of the fifth and sixth Coupled Model Intercomparison Project (CMIP5 and CMIP6) in simulating observed rainfall climatology, seasonal variability, and probability distribution function (PDF) in Peninsular Malaysia. Monthly rainfall records of eighty stations for 1975 − 2005 were employed for this purpose. The Kling-Gupta efficiency was ...
DOI:
10.1007/s00704-022-04076-7

4. Evaluation of GPM IMERG Performance Using Gauge Data over Indonesian Maritime Continent at Different Time Scales

Author:
Ravidho Ramadhan; Helmi Yusnaini; Marzuki Marzuki; Robi Muharsyah; Wiwit Suryanto; Sholihun Sholihun; Mutya Vonnisa; Harmadi Harmadi; Ayu Putri Ningsih; Alessandro Battaglia; Hiroyuki Hashiguchi; Ali Tokay
Source:
Remote Sensing 2022 v.14 no.5 pp. -
ISSN:
2072-4292
Subject:
seasonal variation,   etc   ; altitude; hydrometeorology; probability; rain; rain gauges; satellites;     Show all 7 Subjects
Abstract:
... Accurate precipitation observations are crucial for water resources management and as inputs for a gamut of hydrometeorological applications. Precipitation data from Integrated Multi-Satellite Retrievals for Global Precipitation Measurement (GPM) (IMERG) have recently been widely used to complement traditional rain gauge systems. However, the satellite precipitation data needs to be validated befo ...
DOI:
10.3390/rs14051172

5. Analysis of observed and projected interannual variability in the summer season onset, length, and end dates across the Iran

Author:
Mahdi Sedaghat; Hamid Nazaripour
Source:
Theoretical and applied climatology 2022 v.147 no.1-2 pp. 549-558
ISSN:
0177-798X
Subject:
seasonal variation,   etc   ; climatology; data collection; summer; surface temperature; tropopause; Iran;     Show all 7 Subjects
Abstract:
... It is very important to study the role of global warming on the variability of summer characteristics in arid and semi-arid climates such as Iran, because of its impact on natural and social systems. The aim of this study is to detect interannual variability in the onset, end, and duration of the summer season in Iran. To achieve this goal, three indices are defined: physical (PI), dynamic (DI), a ...
DOI:
10.1007/s00704-021-03852-1

6. Differences in diversity and community assembly processes between planktonic and benthic diatoms in the upper reach of the Jinsha River, China

Author:
Jiancheng Hu; Zhibin Song; Jiacheng Zhou; Janne Soininen; Lu Tan; Qinghua Cai; Tao Tang
Source:
Hydrobiologia 2022 v.849 no.7 pp. 1577-1591
ISSN:
0018-8158
Subject:
seasonal variation,   etc   ; Bacillariophyceae; data collection; plankton; rivers; species diversity; summer;     Show all 7 Subjects
Abstract:
... Comparing spatio-temporal patterns between planktonic and benthic algae is helpful for understanding their associations and differences. However, such studies are still rare especially in large rivers. We used a dataset collected in the upper reach of the Jinsha River in different seasons to explore biodiversity and assembly processes of planktonic and benthic diatom assemblages. We found that pla ...
DOI:
10.1007/s10750-022-04801-3

7. Empirical evidence shows that air quality changes during COVID-19 pandemic lockdown in Jakarta, Indonesia are due to seasonal variation, not restricted movements

Author:
Alana Jakob; Saberina Hasibuan; Dian Fiantis
Source:
Environmental research 2022 v.208 pp. 112391
ISSN:
0013-9351
Subject:
seasonal variation,   etc   ; COVID-19 infection; air quality; rain; research; Indonesia;     Show all 6 Subjects
Abstract:
... Implementing a lockdown or activity restriction to reduce the spread of COVID-19 cases is assumed to improve air quality in highly populated cities. The effect of lockdown on air quality is often quantified by comparing pre- and during-lockdown air quality parameters without considering confounding meteorological factors. We demonstrated that rainfall can explain changes in PM10 and PM2.5 paramete ...
DOI:
10.1016/j.envres.2021.112391

8. Effect of the Intensified Sub‐Thermocline Eddy on Strengthening the Mindanao Undercurrent in 2019

Author:
Fuad Azminuddin; Jae Hak Lee; Dongchull Jeon; Chang‐Woong Shin; Cesar Villanoy; Seok Lee; Hong Sik Min; Dong Guk Kim
Source:
Journal of geophysical research 2022 v.127 no.2 pp. e2021JC017883
ISSN:
2169-9275
Subject:
seasonal variation,   etc   ; Philippines; acoustics; coasts; energy; geophysics; models; research; New Guinea;     Show all 9 Subjects
Abstract:
... The northward‐flowing Mindanao Undercurrent (MUC) was directly measured by acoustic Doppler current profilers from a subsurface mooring at about 8°N, 127°E during 2 years (November 2017–December 2019). Its depth covers a range from 400 m to deeper than 1,000 m with its core appearing at around 900 m. The mean velocity of MUC's core was approximately 5.8 cm s⁻¹ with a maximum speed of about 47.6 cm ...
DOI:
10.1029/2021JC017883

9. Exploring sources and health risks of metals in Beijing PM2.5: Insights from long-term online measurements

Author:
Xi Yang; Mei Zheng; Yue Liu; Caiqing Yan; Junyi Liu; Jiumeng Liu; Yuan Cheng
Source:
Science of the total environment 2022 v.814 pp. 151954
ISSN:
0048-9697
Subject:
seasonal variation,   etc   ; air; coal; combustion; dust; environment; pollution; spring; winter; China;     Show all 10 Subjects
Abstract:
... To gain a comprehensive understanding of sources, health risks, and regional transport of PM₂.₅-bound metals in Beijing, one-year continuous measurement (K, Fe, Ca, Zn, Pb, Mn, Ba, Cu, As, Se, Cr, and Ni) was conducted from December 2016 to November 2017 and Positive Matrix Factorization analysis (PMF) was applied for source apportionment. It was found that the seasonal variation of sources could ...
DOI:
10.1016/j.scitotenv.2021.151954

10. Invited review: Risk factors for transition period disease in intensive grazing and housed dairy cattle

Author:
Ruan R. Daros; Daniel M. Weary; Marina A.G. von Keyserlingk
Source:
Journal of dairy science 2022 v.105 no.6 pp. 4734-4748
ISSN:
0022-0302
Subject:
seasonal variation,   etc   ; dairy cattle; dairy science; disease incidence; lameness; late lactation;     Show all 6 Subjects
Abstract:
... Transition period (±3 wk around calving) diseases are prevalent in dairy systems. In this review we describe the physiological and behavioral changes experienced by cows during the transition period and during the dry period leading up to this. Our narrative review examines risk factors associated with these diseases in zero-grazing and grazing systems. The available research indicates that cows i ...
DOI:
10.3168/jds.2021-20649

11. Biodiversity and seasonal variation of microzooplankton contaminating pilot-scale cultures of Chlorella sorokiniana

Author:
Danni Yuan; Junchu Liu; Hongxia Wang; Qiang Hu; Yingchun Gong
Source:
Algal research 2022 v.64 pp. 102722
ISSN:
2211-9264
Subject:
seasonal variation,   etc   ; Chlorella sorokiniana; biodiversity; biomass; community structure; microalgae; research; summer; zooplankton;     Show all 9 Subjects
Abstract:
... Contaminating microzooplankton have a great influence on the growth of microalgae. To illustrate how harmful contaminants affect the growth of Chlorella sorokiniana and to investigate the microzooplankton community composition, the succession of microzooplankton contaminating pilot-scale C. sorokiniana cultures was surveyed in four different seasons. Nineteen species of microzooplankton (including ...
DOI:
10.1016/j.algal.2022.102722

12. Hydro-geomorphological characteristics in response to the water-sediment regulation scheme of the Xiaolangdi Dam in the lower Yellow River

Author:
Mengwen Lu; Qinghe Zhao; Shengyan Ding; Shuoqian Wang; Zhendong Hong; Yaru Jing; An Wang
Source:
Journal of cleaner production 2022 v.335 pp. 130324
ISSN:
0959-6526
Subject:
seasonal variation,   etc   ; geomorphology; humans; river regulation; rivers; sediments; stream channels; Yellow River;     Show all 8 Subjects
Abstract:
... Water-sediment regulation schemes (WSRS) enacted by dams drive downstream hydrological and geomorphic processes. However, few studies have been conducted to reveal the seasonal variation in the relationship between hydrological and geomorphic processes and the main factors driving river channel geomorphology. In this study, the effects of the WSRS of Xiaolangdi Dam (XLD) on the hydro-morphological ...
DOI:
10.1016/j.jclepro.2021.130324

13. Moderate climate warming scenarios during embryonic and post‐embryonic stages benefit a cold‐climate lizard

Author:
Wan‐li Liu; Peng Liu; Luo‐xin Cui; Yu Meng; Shi‐ang Tao; Xing‐zhi Han; Bao‐jun Sun
Source:
Functional ecology 2022 v.36 no.5 pp. 1137-1150
ISSN:
0269-8463
Subject:
seasonal variation,   etc   ; body size; ectothermy; grasses; latitude; lizards; metabolism; ovipary; progeny; China;     Show all 10 Subjects
Abstract:
... Warming temperatures caused by climate change are predicted to vary temporally and spatially. For mid‐ and high‐latitude reptiles, the seasonal variation in warming temperatures experienced by embryos and hatchlings may determine offspring fitness, yet this has remained largely unexplored. To evaluate the independent and interactive influence of seasonal variation in warming temperatures on embryo ...
DOI:
10.1111/1365-2435.14032

14. Remote sensing reconstruction of long-term water level and storage variations of a poorly-gauged river in the Tibetan Plateau

Author:
Linghong Ke; Jiahui Xu; Chenyu Fan; Kai Liu; Tan Chen; Shidong Wang; Xiaobing Chen; Lijuan Song; Chunqiao Song
Source:
Journal of hydrology 2022 v.40 pp. 101020
ISSN:
2214-5818
Subject:
seasonal variation,   etc   ; altitude; basins; climate; river water; rivers; runoff; water storage; China;     Show all 9 Subjects
Abstract:
... The upper Brahmaputra River, China. The long-term water level and storage variations of the upper Brahmaputra River (UBR) are not yet clear due to the low accessibility of gauged data in high-altitude and harsh environments. The main objective of this study is to facilitate investigations of long-term river water level and storage variations over the UBR. Here we developed a hypsometric method to ...
DOI:
10.1016/j.ejrh.2022.101020

15. Seasonality of Four Types of Baroclinic Instability in the Global Oceans

Author:
Ling Feng; Chuanyu Liu; Armin Köhl; Fan Wang
Source:
Journal of geophysical research 2022 v.127 no.5 pp. e2022JC018572
ISSN:
2169-9275
Subject:
seasonal variation,   etc   ; Gulf Stream; autumn; geophysics; research; spring; summer; winter; Antarctic region;     Show all 9 Subjects
Abstract:
... Distinct geographical distributions of four types of mesoscale baroclinic instabilities (BCIs) exist in the global oceans, implying preferences of surface or subsurface mesoscale eddies to specific regions. This study explores seasonal variations of global BCI types and their dependence on varying background ocean states with a focus on three representative regions. First, the regions of the Kuros ...
DOI:
10.1029/2022JC018572

16. The seasonal variation of basal metabolic rate is related to the expression of torpor among small mammals

Author:
Michel Genoud
Source:
Journal of thermal biology 2022 v.104 pp. 103197
ISSN:
0306-4565
Subject:
seasonal variation,   etc   ; basal metabolic rate; body weight; climate; metabolism; phylogeny; resting periods;     Show all 7 Subjects
Abstract:
... A variety of responses to climate seasonality have evolved by small mammals, including adjustments of the basal rate of metabolism (BMR) and the use of daily or seasonal torpor (here referred to as short-bout and long-bout torpor). The seasonal variation of their BMR is known to depend mainly on the concurrent variation of body mass, but it should also be affected by structural and functional chan ...
DOI:
10.1016/j.jtherbio.2022.103197

17. A critical evaluation of the dynamic nature of indoor-outdoor air quality ratios

Author:
Samuel Stamp; Esfand Burman; Lia Chatzidiakou; Elizabeth Cooper; Yan Wang; Dejan Mumovic
Source:
Atmospheric environment 2022 v.273 pp. 118955
ISSN:
1352-2310
Subject:
seasonal variation,   etc   ; air quality; case studies; environment; hospitals; humans; nitrogen dioxide; particulates; pollutants;     Show all 9 Subjects
Abstract:
... Long term, continuous indoor and outdoor pollutant monitoring was evaluated from a case study hospital, school, office and 18 apartments in the UK. Data was examined in order to explore the dynamic behaviour of indoor-outdoor ratios (I/O) for both particulate matter and nitrogen dioxide. Traditionally I/O ratios have been determined as single aggregate values or static parameters, from passive sam ...
DOI:
10.1016/j.atmosenv.2022.118955

18. A multiresidue analytical method on air and rainwater for assessing pesticide atmospheric contamination in untreated areas

Author:
Céline Décuq; Marjolaine Bourdat-Deschamps; Pierre Benoit; Colette Bertrand; Rachid Benabdallah; Baptiste Esnault; Brigitte Durand; Benjamin Loubet; Clémentine Fritsch; Céline Pelosi; Sabrina Gaba; Vincent Bretagnolle; Carole Bedos
Source:
Science of the total environment 2022 v.823 pp. 153582
ISSN:
0048-9697
Subject:
seasonal variation,   etc   ; air; environment; experimental design; insecticides; pollution; pyrethrins; rain; topsoil; wet deposition;     Show all 10 Subjects
Abstract:
... The use of pesticides in agriculture to protect crops against pests and diseases generates environmental contamination. The atmospheric compartment contributes to their dispersion at different distances from the application areas and to the exposure of organisms in untreated areas through dry and wet deposition. A multiresidue analytical method using the same TD–GC‐MS analytical pipeline to quanti ...
DOI:
10.1016/j.scitotenv.2022.153582

19. Added Value of Ascophyllum nodosum Side Stream Utilization during Seaweed Meal Processing

Author:
Anna Þóra Hrólfsdóttir; Sigurjón Arason; Hildur Inga Sveinsdóttir; María Gudjónsdóttir
Source:
Marine drugs 2022 v.20 no.6 pp. -
ISSN:
1660-3397
Subject:
seasonal variation,   etc   ; Ascophyllum nodosum; biomass; carotenoids; ingredients; liquids; macroalgae; peptides; polyphenols; product development;     Show all 10 Subjects
Abstract:
... Ascophyllum nodosum contains many valuable compounds, including polyphenols, peptides, and carotenoids that have been shown to exhibit biological activities. These compounds are not a priority ingredient in seaweed meal products for the current users. Hence, the aim of the study was to investigate the chemical and bioactive characteristics of A. nodosum as affected by seasonal variation and evalua ...
DOI:
10.3390/md20060340

20. Age and seasonal variation and establishment of reference intervals for water-soluble vitamins determined by liquid chromatography tandem mass spectrometry

Author:
Wei-Wei Tong; Guang-Hui Tong; Meng-Han Yang; Xiao-Song Qin
Source:
Nutrition 2022 v.95 pp. 111490
ISSN:
0899-9007
Subject:
seasonal variation,   etc   ; liquid chromatography; retrospective studies; tandem mass spectrometry; vitamin deficiencies; water solubility;     Show all 6 Subjects
Abstract:
... We aimed to establish reference intervals for water-soluble vitamins determined by liquid chromatography tandem mass spectrometry to improve the diagnosis of vitamin deficiency and outcomes of associated conditions. In this retrospective analysis of 24 810 specimens, we aimed to examine sex-, age-, and season-related variations in vitamin levels in different groups, set reference-value intervals f ...
DOI:
10.1016/j.nut.2021.111490