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Frontiers | The Recent Relationships Between Andean Ice-Core Dust Record and Madeira River Suspended Sediments on the Wet Season

Dust particle studies in ice cores from the tropical Andes provide important information about climate dynamics. We investigated dust concentrations from a 22.7 m ice-core recovered from the Quelccaya Ice Cap (QIC) in 2018, representing 14 years of snow accumulation. The dust seasonality signal was still preserved with homogenization of the record due to surface melting and percolation. Using a microparticle counter, we measured the dust concentration from 2–60 μm and divided the annual dust concentration into three distinct groups: fine particle percentage (FPP, 2−10 μm), coarse particle percentage (CPP, 10−20 μm), and giant particle percentage (GPP, 20−60 μm). Increased dust was associated with the warm stage of the Pacific Decadal Oscillation index (PDO) after 2013 with significant increases in FPP and a relative decrease in CPP and GPP. There was a positive correlation between PDO and FPP (r = 0.70, p-value < 0.005). CPP and GPP were dominant during the mainly PDO co

UAE: Environment Agency improved air quality monitoring programme in 2021

Detailed text transcripts for TV channel - DW - 20190221:05:19:00

a no go like it was the wind conditions are wetter that s drawing to up. and it s the material from the floor about old like silk and little silica organisms called diatoms to get blown away high up into the air and can travel huge distances. there s a range of countries primarily neighboring the sahara because this is the major source of sand and dust storms both to the north and south but equally to the east where we are talking of iraq iran syria kuwait the emirates the gulf states saudi arabia but increasingly moving to the east we run into the stands as we call them afghanistan took many stars and here the difficulty is that they re affected in both directions sand and dust being driven to the south from the gobi desert from the tibetan plateau and all through asia so there s a whole range of countries with a long plume starting from the western edge of the sahara all the way through and

Detailed text transcripts for TV channel - DW - 20190221:05:23:00

dust storm activity in the one nine hundred forty s. and on woods and that does show that we can do something about it if we wish in the right circumstances. and dust blowing from the sun harra but the region itself is increasingly becoming a source of dust decreasing rainfall combined with the over use of water for agriculture making the soil dangerously dry. why don t we get dust storms any time we have wind because we have higher soil moisture. the soil moisture acts like a glue it keeps the soil particles. connected to each other so the wind cannot lift them as soon as we lose the morays sure you disconnect these particles and these particles. are blown away easily whenever you have a wait so when you have

Detailed text transcripts for TV channel - DW - 20190221:05:21:00

we had a big phenomena or tragedy call the dust bowl of the united states in the nineteenth thirty s. the american dustbowl is famous as a human induced environmental disaster. in the one nine hundred twenty s. and thirty s crops were planted on newly created farms on form across lands but drought and over farming on course soils meant the crops failed year after year. with no vegetation thousands of tons of soil blew away creating choking storms of dust for days on end. how did it happen some unusually what people here made people think that water is available i mean you can plough anywhere you like and water would follow and this was the dominant thinking

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