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Satellite Signals from Space: Smart Science for Understanding Weather and Climate
Want to know about COSMIC, and how satellite signals can provide information about Earth's atmosphere? This video provides anyone interested in the topic with a brief overview of the Constellation Observing System for Meteorology, Ionosphere, and Climate, called COSMIC. Targeted to students and teachers in Grades 5-9 but accessible to anyone, the video introduces the latest COSMIC mission (COSMIC-2), which uses satellites orbiting near Earth to measure how the atmosphere affects signals from global positioning system (GPS) satellites high above the surface. This technique is called radio occul ...
Forecasters' Overview of the Middle East
This lesson provides an introduction to the Middle East for Navy meteorologists. It focuses on the major aspects of synoptic and mesoscale weather patterns, hazards to aviation and maritime operations, geography, oceanography, and climatology. The “Geography” Unit covers major political boundaries, cities, ports, topographical features, rivers, and seismicity. The “Oceanography” Unit includes major bathymetric features, mean sea surface temperature, vertical temperature profiles, salinity and velocity, ocean currents, and tidal ranges. The “Climatology” Unit covers the seasonal climatology of ...
Caribbean 2017 Hurricane Season an evidence-based assessment of the Early Warning System
World Meteorological Organization (WMO) ; World Bank the; Global Facility for Disaster Reduction and Recovery, the ; et al. - WMO, 2018This report presents the key findings and recommendations for strengthening multi-hazard early warning systems in the Caribbean, following the first-ever systematic review of their performance in a post-disaster environment. The review took place after the passage of Hurricanes Harvey, Irma and Maria which significantly impacted more than 12 island States in the region in 2017.
Saison des ouragans 2017 dans les Caraïbes : évaluation des systèmes d'alerte précoce fondée sur des éléments factuels
Organisation météorologique mondiale (OMM); Banque mondiale ; Global Facility for Disaster Reduction and Recovery, the ; et al. - OMM, 2018Le présent rapport contient les principales conclusions et recommandations relatives au renforcement des systèmes d’alerte précoce multidangers dans les Caraïbes, qui découlent de la première étude systématique de leurs performances dans un contexte post-catastrophe. L’étude a été effectuée après le passage des ouragans Harvey, Irma et Maria, qui ont gravement déstabilisé plus de 12 États insulaires de la région en 2017.
The State of the Polar Oceans 2018 : Making Sense of Our Changing World
Foreign & Commonwealth Office ; Norwegian Ministry of Foreign Affairs - British Antarctic Survey, 2018
Forecasters' Overview of the Mediterranean and Europe
This module provides an introduction to the European continent and the Mediterranean and Black Sea areas for weather forecasters. It focuses on geography, climatology, oceanography, major aspects of the synoptic and mesoscale weather patterns, and hazards to aviation and maritime operations. Geography covers major political boundaries, cities, ports, topographical features, rivers, and volcanic areas. Climatology covers the seasonal climatology of jet stream, synoptic weather systems, extratropical cyclones, and high winds and seas. Oceanography includes major bathymetric features; mean sea su ...
SatFC-G: Tropical to Extratropical Transition
This lesson uses water vapor satellite imagery from Himawari-8 to describe the typical extratropical transition of a tropical cyclone. The Himawari-8 imager previews comparable capabilities coming online with the GOES-R ABI imager. The lesson also provides a brief overview of subtropical cyclones and their transition to tropical cyclones. This lesson is a part of the NWS Satellite Foundation GOES-R Course.
INDARE, Indian Ocean Data Rescue Initiative : summary report
This publication provides a summary of a capacity building workshop on Data Rescue (DARE), Quality Control (QC), Homogenisation and Climate Change Indices held in Arusha, Tanzania from 9-14 November 2015 as part of the implementation of the Indian Ocean Data Rescue (INDARE) initiative. The National Meteorological and Hydrological Services of Comoros, Kenya, Madagascar, Maldives, Mozambique, Seychelles, Sri Lanka and Tanzania participated in the workshop and received the necessary knowledge and software to undertake QC and homogenisation of their climate time series and use them for analysing c ...
Pacific Islands Meteorological Services in Action : A Compendium of Climate Services Case Studies
SPREP ; Finnish Meteorological Institute (FMI); Ministry for Foreign Affairs of Finland ; et al. - SPREP, 2016
The Sahel Drought Mechanism: insights from two contrasting extreme events
The Sahel drought mechanism: insights from two contrasting extreme events during boreal summer July-August-September (JAS) is investigated in this study using the standardized precipitation index (SPI). Empirical orthogonal function (EOF) and composite analyses were deployed in this study, where the global precipitation climatology center (GPCC) rainfall data is used. The SPI shows large widespread decreasing rainfall trend in the Sahel in the mid-1980s; thereafter, Sahel rainfall have recovered somewhat through the late 1990s, even though the drought conditions have not ended in the region. A ...
Variability of Benin JJAS Precipitation associated with MAM SST Anomaly in the Atlantic Ocean
Precipitations vary consistently in Benin from 1981 to 2010. The present study reveals that the variation of Benin JJAS precipitation is positively correlated to MAM Sea Surface Temperature (SST) in Atlantic Ocean with correlation coefficient more than 0.7. When the SST is higher (lower) in the Atlantic Ocean, precipitation over Benin tends to be above (below) normal. The years 1988, 1989, 2003, 2007 and 2008, were wet with 1988, 2003, 2008 high SST over Tropical Southern Atlantic Ocean (STAO) while the years 1982, 1983, 1992 and 1997 formed the dry years with low SST over Tropical Southern At ...
Satellite-Derived Climatology Products for Monitoring Convection Over West and Central Africa
A weather forecaster’s knowledge of climatology is important to the success of a forecast, especially where convection is involved. That’s particularly true over Central and West Africa where convection has a strong diurnal cycle and usually develops over particular geographic regions and during specific time intervals. The lesson describes satellite-derived cloud climatology products and several global instability indices, all of which can be integrated with other products to forecast convection. Although the lesson uses examples of climatology products from specific months, it makes the full ...
Extreme High Swell Events on the Moroccan Atlantic Coast
High swell events can develop far from the coast under cyclonic conditions, and take several days to travel to land. If early warnings are not issued, they can take an area by surprise and have a devastating impact. This lesson aims to improve the ability of marine forecasters to forecast extreme marine events related to high swells. It does so by providing background information on winds and waves, and presenting a process for monitoring and forecasting high swell events using a variety of data. These include ASCAT scatterometer wind data and the ECMWF Extreme Forecast Index (EFI) product, wh ...
Lake Chad-HYCOS, A component of the World Hydrological Cycle Observing System (WHYCOS) : Project document
World Meteorological Organization (WMO) ; Lake Chad Basin Commission (LCBC) ; World Meteorological Organization (WMO) - WMO, 2015
DBCP Technical Document, 49. Proceedings of the Second Capacity Building Workshop of the DBCP for the North Pacific Ocean and its Marginal Seas (NPOMS-2) : Application of Regional Ocean Observations for Increasing Society’s Understanding and Forecasting of Typhoons
Establishment and Operation of a Flood Information System in the Hindu Kush Himalayas “Making information travel faster than floods”, HKH HYCOS User Phase 2015-2019 : Project Document
International Centre for Integrated Mountain Development (ICIMOD); World Meteorological Organization (WMO) - WMO, 2014Submitted to the Ministry of Foreign Affairs, Government of Finland by International Centre for Integrated Mountain Development (ICIMOD), Kathmandu, Nepal
Arctic Ocean acidification 2013: an overview
This overview report presents a summary of the first comprehensive assessment of Arctic Ocean acidification (AOA) conducted by the Arctic Monitoring and Assessment Programme (AMAP).
Forecasters' Overview of the Gulf of Mexico and Caribbean Sea
This module provides an introduction to the Gulf of Mexico and Caribbean Sea for weather forecasters. It focuses on major aspects of the geography, oceanography, and climatology. Geography covers major political boundaries, cities, ports, topographical features, rivers, and volcanic areas. Oceanography includes major bathymetric features, mean sea surface temperature and surface salinity, ocean currents, and tidal ranges. Climatology covers the seasonal climatology of jet streams and synoptic weather systems, extratropical cyclones in the Gulf of Mexico, and monthly and seasonal statistics of ...
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Climate change in the Himalayas : current state of knowledge
This paper reviews the literature on the potential biophysical and economic impacts of climate change in the Himalayas. Existing observations indicate that the temperature is rising at a higher rate in Nepal and Chinese regions of the Himalayas compared with rest of the Himalayas. A declining trend of monsoon in the western Indian Himalayas and an increasing trend in the eastern Indian Himalayas have been observed, whereas increasing precipitation and stream flow in many parts of Tibetan Plateau are noted. Glaciers in both the eastern and western Himalayas are mostly retreating, but the majori ...
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Climate change and water resources in the tropical Andes
Climate change will without a doubt affect future access to clean drinking water, as well as to water for sanitation, irrigation and agriculture, mining operations, and hydro power production in the tropical Andes. Social, economic and environmental conflicts surrounding the struggle for control over water will be exacerbated in areas where water scarcity is juxtaposed with rapidly growing water demand due to population pressure and expanding economic activities. This paper describes the challenges surrounding current and future water use in the tropical Andes by first reviewing the modern and ...
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66 - February 2012 - A method for estimating the sea-air CO2 flux in the Pacific Ocean
is an issue of 気象研究所技術報告. Meteorological Research Institute, 2012In this technical report, we describe a newly developed method for evaluating monthly fields of oceanic pCO2 and the subsequent temporal variations of the sea-air CO2 flux over extensive regions of the North and South Pacific by using synthesized observational data. The application of this method is expected to contribute to understanding of future changes in the ocean carbon sink and the ocean's role in controlling the rate of atmospheric CO2 increase.
Arctic Meteorology and Oceanography
Diminishing sea ice has opened the Arctic to navigation and operations like never before. Forecasters are increasingly predicting weather in support of those operations. This module is intended to provide forecasters with a brief introduction to the Arctic, including its geography, climatology, and the forecast problems they are likely to encounter. The module follows a U.S. Coast Guard Cutter on a voyage from Dutch Harbor, in the Aleutian Islands, to Barrow, on the north coast of Alaska. Various topics are addressed along the way in a series of short, stand-alone lessons.
ASMET: Flooding in West Africa
The rainy season in Sahelian West Africa extends from June to September and is tied to the position of the intertropical front. During this period, mesoscale convective systems (MCSs) often produce significant rainfall that can lead to flooding. This module examines an extreme flooding event that occurred in Ouagadougou, Burkina Faso from 31 August to 1 September 2009. Learners assume the role of forecaster, assessing meteorological conditions to see if an MCS will develop that can lead to heavy rain and flooding. They follow a forecast process that emphasizes the use of satellite data, standa ...
Climate ExChange
Climate ExChange is a fully illustrated 250-page book with over 100 authors relating their work in weather, climate and water services at international, regional, national and local levels. The commentaries draw upon experiences around the world reflecting how people are using climate information to improve their lives. Climate ExChange reflects the progress and challenges in these fields, highlighting good practices in a wide variety of societies and disciplines.
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CGIAR Working paper, 23. Impacts of climate change on the agricultural and aquatic systems and natural resources within the CGIAR’s mandate
CCAFS, 2012The document attempts to distil what is currently known about the likely impacts of climate change on the commodities and natural resources that comprise the mandate of CGIAR and its 15 Centres. It was designed as one background document for a review carried out by the High Level Panel of Experts on Food Security and Nutrition (HLPE) at the behest of the UN Committee on World Food Security (CFS) on what is known about the likely effects of climate change on food security and nutrition, with a focus on the most affected and vulnerable regions and populations. A total of 25 summaries covering 22 ...
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Mediterranean ecological footprint trends
Global Footprint Network, 2012The Mediterranean’s ever-widening ecological deficit and its economic implications is the main theme of the new Mediterranean Ecological Footprint Trends report, the result of a two-year study by Global Footprint Network and the focus of the conference.
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Measuring Glacier Change in the Himalayas: In UN Environment Programme (UNEP) Global Environmental Alert Service (GEAS), September 2012
UNEP, 2012A serious lack of reliable and consistent data severely hampers scientific knowledge about the state of Himalayan glaciers. As a result, the contribution of glacial melt to the Himalayan river basins remains uncertain. This is of grave importance because declining water availability could threaten the food security of more than 70 million people. There is thus an urgent need to improve cross-boundary scientific collaboration and monitoring of glaciers to bridge the knowledge gap and allow policy options to be based on appropriate scientific evidence.
Himalayan Glaciers: Climate Change, Water Resources, and Water Security
National Academies Press, 2012Scientific evidence shows that most glaciers in South Asia's Hindu Kush Himalayan region are retreating, but the consequences for the region's water supply are unclear, this report finds. The Hindu Kush Himalayan region is the location of several of Asia's great river systems, which provide water for drinking, irrigation, and other uses for about 1.5 billion people. Recent studies show that at lower elevations, glacial retreat is unlikely to cause significant changes in water availability over the next several decades, but other factors, including groundwater depletion and increasing human wat ...
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Adapting to climate-change induced water stress in the Nile basin
This summary report addresses the need for national and intergovernmental projects to reduce the impact of climate change on the Nile River basin. It indicates that any future changes in water quantity and quality caused by climate change will have a negative impact on economies, environment, and livelihoods in the Nile region. Provided in this summary report is information to help governments decide a better course of action for dealing with high population growth and rising levels of water scarcity, such as creating measures that will have both a local effect and positively impact countries. ...
Ending the everyday emergency: resilience and children in the Sahel
This report demonstrates that shortage of food is only part of the severe and life-threatening crisis facing children in the Sahel region of west Africa in 2012. It focuses in particular on the experience of children, and makes detailed recommendations around disaster risk reduction, nutrition, and social protection to build resilience. The report also addresses the urgent need for political ambition to change the international system and end the everyday emergencies.
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Le Karakorum, glacier de l'Himalaya qui ne fond pas: In lemonde.fr
2012Les glaciers de l'Himalaya fondent lentement, mais une partie d'entre eux sont dans un état stable, voire regagnent légèrement du volume : c'est ce qui ressort de deux articles scientifiques parus dans les revues Science du 20 avril et Nature Geoscience du 15 avril.
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L'accumulation inquiétante des polluants dans l'Arctique: In lemonde.fr
2012S'il est vrai, comme le pense l'ex-première ministre norvégienne Gro Harlem Brundtland, que "les régions polaires demeurent celles du monde sur lesquelles on a le moins de connaissances", les travaux présentés du 22 au 27 avril à Montréal, lors de la conférence de l'Année polaire internationale 2012, ont permis de mesurer les avancées scientifiques réalisées.
C'est particulièrement le cas pour les études concernant la présence en Arctique de métaux - comme le mercure - et de polluants organiques persistants (POP), dont les impacts sur la santé et l'environnement sont très nocif ...
El cambio climático en los Andes y la Amazonía : preguntas frecuentes
Este documento ofrece respuestas claras y concisas a las más frecuentes preguntas sobre: cambio climático; conocimiento tradicional; y, ecosistemas andinos y amazonia.
Seasonal variability in the optical properties of Baltic aerosols
A five-year dataset of spectral aerosol optical thickness was used to analyse the seasonal variability of aerosol optical properties (the aerosol optical thickness (AOT) at wavelength λ=500 nm, AOT(500) and the Ångström exponent for the 440-870 nm spectral range, α(440, 870)) over the Baltic Sea and dependence of these optical properties on meteorological factors (wind direction, wind speed and relative humidity). The data from the Gotland station of the global radiometric network AERONET (Aerosol Robotic Network, http://aeronet.gsfc.nasa.gov) were taken to be representative of the Baltic Sea ...
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Synergetic monitoring of Saharan dust plumes and potential impact on surface: a case study of dust transport from Canary Islands to Iberian Peninsula
Atmospheric Chemistry and Physics (ACP), Vol. 11. N° 7. Córdoba-Jabonero C.; Sorribas M.; Guerrero-Rascado J.L.; et al. - Copernicus GmbH, 2011The synergetic use of meteorological information, remote sensing both ground-based active (lidar) and passive (sun-photometry) techniques together with backtrajectory analysis and in-situ measurements is devoted to the characterization of dust intrusions. A case study of air masses advected from the Saharan region to the Canary Islands and the Iberian Peninsula, located relatively close and far away from the dust sources, respectively, was considered for this purpose. The observations were performed over three Spanish geographically strategic stations within the dust-influenced area along a co ...
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African biomass burning plumes over the Atlantic: aircraft based measurements and implications for H2SO4 and HNO3 mediated smoke particle activation
Atmospheric Chemistry and Physics (ACP), Vol. 11. N° 7. Fiedler V.; Arnold F.; Ludmann S.; et al. - Copernicus GmbH, 2011Airborne measurements of trace gases and aerosol particles have been made in two aged biomass burning (BB) plumes over the East Atlantic (Gulf of Guinea). The plumes originated from BB in the Southern-Hemisphere African savanna belt. On the day of our measurements (13 August 2006), the plumes had ages of about 10 days and were respectively located in the middle troposphere (MT) at 3900–5500 m altitude and in the upper troposphere (UT) at 10 800–11 200 m. Probably, the MT plume was lifted by dry convection and the UT plume was lifted by wet convection. In the more polluted MT-plume, numerous me ...
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Latitudinal distributions of organic nitrogen and organic carbon in marine aerosols over the western North Pacific
Atmospheric Chemistry and Physics (ACP), Vol. 11. N° 7. Miyazaki Y.; Kawamura K.; Jung J.; et al. - Copernicus GmbH, 2011Marine aerosol samples were collected over the western North Pacific along the latitudinal transect from 44° N to 10° N in late summer 2008 for measurements of organic nitrogen (ON) and organic carbon (OC) as well as isotopic ratios of total nitrogen (TN) and total carbon (TC). Increased concentrations of methanesulfonic acid (MSA) and diethylammonium (DEA+) at 40–44° N and subtropical regions (10–20° N) together with averaged satellite chlorophyll-a data and 5-day back trajectories suggest a significant influence of marine biological activities on aerosols in these regions. ON exhibited incre ...
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Saharan and Asian dust: similarities and differences determined by CALIPSO, AERONET, and a coupled climate-aerosol microphysical model
This study compares the properties of atmospheric dust from the Saharan deserts and the Asian deserts using data from CALIPSO and AERONET during 2006 and 2007 along with simulations using a coupled climate-microphysical sectional model. Saharan deserts are largely south of 30° N, while Asian ones are primarily north of 30° N, hence they experience different meteorological regimes. Saharan dust lifting occurs all year long, primarily due to subtropical weather systems. However, Asian dust is lifted mostly in spring when mid-latitude frontal systems lead to high winds. Rainfall is more abundant ...
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New particle formation events in semi-clean South African savannah
Atmospheric Chemistry and Physics (ACP), Vol. 11. N° 7. Vakkari V.; Laakso H.; Kulmala M.; et al. - Copernicus GmbH, 2011This study is based on 18 months (20 July 2006–5 February 2008) of continuous measurements of aerosol particle size distributions, air ion size distributions, trace gas concentrations and basic meteorology in a semi-clean savannah environment in Republic of South Africa. New particle formation and growth was observed on 69% of the days and bursts of non-growing ions/sub-10 nm particles on additional 14% of the days. This new particle formation frequency is the highest reported from boundary layer so far. Also the new particle formation and growth rates were among the highest reported in the li ...
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Understanding the transport of Patagonian dust and its influence on marine biological activity in the South Atlantic Ocean
Atmospheric Chemistry and Physics (ACP), Vol. 11. N° 3. Johnson M.S.; Meskhidze N.; Kiliyanpilakkil V.P.; et al. - Copernicus GmbH, 2011The supply of bioavailable iron to the high-nitrate low-chlorophyll (HNLC) waters of the Southern Ocean through atmospheric pathways could stimulate phytoplankton blooms and have major implications for the global carbon cycle. In this study, model results and remotely-sensed data are analyzed to examine the horizontal and vertical transport pathways of Patagonian dust and quantify the effect of iron-laden mineral dust deposition on marine biological productivity in the surface waters of the South Atlantic Ocean (SAO). Model simulations for the atmospheric transport and deposition of mineral du ...
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Measurement and simulation of the 16/17 April 2010 Eyjafjallajökull volcanic ash layer dispersion in the northern Alpine region
Atmospheric Chemistry and Physics (ACP), Vol. 11. N° 3. Emeis S.; Forkel R.; Junkermann W.; et al. - Copernicus GmbH, 2011The spatial structure and the progression speed of the first ash layer from the Icelandic Eyjafjallajökull volcano which reached Germany on 16/17 April is investigated from remote sensing data and numerical simulations. The ceilometer network of the German Meteorological Service was able to follow the progression of the ash layer over the whole of Germany. This first ash layer turned out to be a rather shallow layer of only several hundreds of metres thickness which was oriented slantwise in the middle troposphere and which was brought downward by large-scale sinking motion over Southern Germa ...
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Distribution and air-sea exchange of mercury (Hg) in the Yellow Sea
Atmospheric Chemistry and Physics (ACP), Vol. 11. N° 3. Ci Z.J.; Zhang X.S.; Wang Z.W.; et al. - Copernicus GmbH, 2011The Yellow Sea, surrounded by East China and the Korea Peninsula, is a potentially important receptor for anthropogenic mercury (Hg) emissions from East Asia. However, there is little documentation about the distribution and cycle of Hg in this marine system. During the cruise covering the Yellow Sea in July 2010, gaseous elemental mercury (GEM or Hg(0)) in the atmosphere, total Hg (THg), reactive Hg (RHg) and dissolved gaseous mercury (DGM, largely Hg(0)) in the waters were measured aboard the R/V Kexue III. The mean (±SD) concentration of GEM over the entire cruise was 2.61 ± 0.50 ng m−3 (ra ...
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Chemical composition and mixing-state of ice residuals sampled within mixed phase clouds
Atmospheric Chemistry and Physics (ACP), Vol. 11. N° 3. Ebert M.; Worringen A.; Benker N.; et al. - Copernicus GmbH, 2011During an intensive campaign at the high alpine research station Jungfraujoch, Switzerland, in February/March 2006 ice particle residuals within mixed-phase clouds were sampled using the Ice-counterflow virtual impactor (Ice-CVI). Size, morphology, chemical composition, mineralogy and mixing state of the ice residual and the interstitial (i.e., non-activated) aerosol particles were analyzed by scanning and transmission electron microscopy. Ice nuclei (IN) were identified from the significant enrichment of particle groups in the ice residual (IR) samples relative to the interstitial aerosol. In ...
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Origin and radiative forcing of black carbon transported to the Himalayas and Tibetan Plateau
Atmospheric Chemistry and Physics (ACP), Vol. 11. N° 3. Kopacz M.; Mauzerall D.L.; Wang J.; et al. - Copernicus GmbH, 2011The remote and high elevation regions of central Asia are influenced by black carbon (BC) emissions from a variety of locations. BC deposition contributes to melting of glaciers and questions exist, of both scientific and policy interest, as to the origin of the BC reaching the glaciers. We use the adjoint of the GEOS-Chem model to identify the location from which BC arriving at a variety of locations in the Himalayas and Tibetan Plateau originates. We then calculate its direct and snow-albedo radiative forcing. We analyze the seasonal variation in the origin of BC using an adjoint sensitivity ...
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Origin and radiative forcing of black carbon transported to the Himalayas and Tibetan Plateau
Atmospheric Chemistry and Physics (ACP), Vol. 11. N° 3. Kopacz M.; Mauzerall D.L.; Wang J.; et al. - Copernicus GmbH, 2011The remote and high elevation regions of central Asia are influenced by black carbon (BC) emissions from a variety of locations. BC deposition contributes to melting of glaciers and questions exist, of both scientific and policy interest, as to the origin of the BC reaching the glaciers. We use the adjoint of the GEOS-Chem model to identify the location from which BC arriving at a variety of locations in the Himalayas and Tibetan Plateau originates. We then calculate its direct and snow-albedo radiative forcing. We analyze the seasonal variation in the origin of BC using an adjoint sensitivity ...
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