Air purifier?

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tmkedmw

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Extreme dry season hits North Sumatra as Riau prepares fake rain
Apriadi Gunawan and Rizal Harahap,
The Jakarta Post, Medan/Pekanbaru
Tue, June 23 2015, 8:18 AM

An extreme dry season has hit Medan and a number of other regions in North Sumatra, triggering fears of possible forest fires. In response, Riau is preparing artificial rain to prevent the possible spread of fire.

Lestari Purba, a staff member with the Meteorology, Climatology and Geophysics Agency (BMKG) Region I Medan, said that last week’s air temperature in Medan and other regions had reached 36 degrees Celsius.

“This is already categorized as extreme because the normal temperature for these regions never exceeds 35 degrees Celsius,” said Lestari, adding that the normal temperature was between 32 and 35 degrees.

She blamed the condition on wind patterns and the position of the sun directly above North Sumatra. She also said that the hot temperature was predicted to last until the end of June.

The current dry season, she said, was the second this year, as the first one occurred in February. She said that hotspots were expected to be found in a number of regions because of high air temperatures.

Meanwhile, the head of the North Sumatra Forestry Agency, Halen Purba, said that the province was prone to forest fires during dry seasons, in particular the areas of Padang Lawas, North Padang Lawas, Labuhan Batu and Mandailing Natal regencies, as well as in parts of the Tapanuli area.

He said that his office had prepared a forest firefighter unit in anticipation.

“In North Sumatra, forest fires are mostly caused by individuals. Only a few have been caused by companies,” Halen told The Jakarta Post on Monday.

Meanwhile in Riau, to help deal with the increase in temperature in the region, the provincial administration in cooperation with the Agency for the Assessment and Application of Technology (BPPT) has started preparing an artificial rain operation.

The move is intended to make sure that the increase in temperature does not lead to forest and field fires in the region.

The weather modification technology was also stepped-up following a decision by acting Riau Governor Arsyadjuliandi “Andi” Rachman to extend the forest and land fire emergency status until December 2015.

“We expect this will be effective in preventing the reoccurrence of the haze disaster that has hit Riau for the last 17 years,” Andi said after the launch of the operation together with National Disaster Mitigation Agency (BNPB) head Syamsul Maarif in Pekanbaru on Monday.

Andi reminded his listeners of the negative impacts of the haze disaster in 2013 on the region’s economy, health and education.

During the haze disaster, he said, thousands of students were sent home.

“We don’t want this to be repeated. That’s why all elements in the community are expected to be side by side with the government and other stakeholders to conduct early forest and field fire preventive and mitigation measures,” he said.

Syamsul Maarif said that BNPB had allocated Rp 15 billion in funds for the development beginning on June 26 of 103 canal blockings in Rokan Hilir, Siak and Bengkalis regencies.

“The development of the canal blockings in the regencies is aimed at increasing the wetness of the areas thus making them difficult to set ablaze,” Syamsul said. -

Source: http://www.thejakartapost.com/news/...ts-north-sumatra-riau-prepares-fake-rain.html
 

chuanz

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Sauce: http://www.smh.com.au/environment/w...will-last-well-into-2016-20150623-ghvhlc.html

Peter Hannam
Environment Editor, The Sydney Morning Herald
June 23, 2015

El Nino strengthens with models predicting it will last well into 2016

The El Nino weather pattern continues to consolidate in the Pacific with most climate models indicating it will extend well into next year, the Bureau of Meteorology said.

The event, which typically boosts global surface temperatures and leads to warmer and drier than average conditions for much of Australia, may also be a strong one, the bureau said in its fortnightly update.

Sea-surface temperatures in the equatorial Pacific - stretching from just west of the international dateline all the way eastwards to the South American coast - are at least one degree warmer than normal.

"It is unusual to have such a broad extent of warmth across the tropical Pacific," the bureau said. "The last time this occurred was during the [super] 1997-98 El Nino."
 

chuanz

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For those depending on AQICN for readings, please note that they are no longer (maybe temporarily, I dunno) tracking the PM2.5 readings for Singapore since around Saturday or Sunday.

yCU06Pn.png
 

chuanz

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Yellows on the Peninsular... but not really that many hot spots around.

c9t1IZb.png
 

WussRedXLi

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This is what I was talking about last week. Latest Westerly Wind Burst (WWB) along the equator forecasted to start right about now. If it does play out (and it probably will get played out), this will take us for a home run at very possibly a strong El Nino. (Meteorologists/scientists will not say this online as they are still very cautious after 2014's screw up, which isn't their fault, seriously)

NB. Just that it the orange esp red areas are needed to ramp up the SSTs/Sea Surface Temperatures to strengthen the El Nino. They are the WWBs.

You can already see the past 2-3 days starting 130-160E range. Actually you can see it in the ASMC map in post #4344 2 posts above

u.anom.30.5S-5N.gif


28.png


59.png
 
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WussRedXLi

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They revised the WWBs to peak even more in the next few days. Lets see how it plays out. Very strong El Nino is possible. Super El Nino cannot be ruled out.

u.anom.30.5S-5N.png
 

WussRedXLi

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Finally open mouth liao......

My colleagues were predicting this week that this year won't have haze. Jin satki.... :s13:

http://www.channelnewsasia.com/news/singapore/drier-warmer-weather-in/1942924.html



SINGAPORE: Due to moderate El Nino conditions which are likely to further develop during this monsoon season, the Republic can expect drier and warmer weather for the next four months, announced the National Environment Agency on Friday (Jun 26).

The average daily maximum and minimum temperatures for June (as of Jun 25) are 31.9°C and 26.5°C, about 0.6°C and 1.7°C above the long-term average respectively. In 2009, the last time moderate El Nino conditions were seen, the average daily temperature was 28.5°C.

The risk of transboundary haze is also predicted to be higher - the Meteorological Service Singapore has said that sporadic hotspot activities with smoke plumes were recently seen in Sumatra. This could affect Singapore, but would depend on factors like wind direction and rainfall. Rainfall is expected to be from 15 per cent to 45 per cent below average.

As such, the Inter-Agency Haze Task Force (HTF) is co-ordinating the agencies’ respective action plans in preparation for haze. NEA’s haze forecasts and advisories will take into account the Ministry of Health's health advisories and Ministry of Manpower's workplace guidelines.

The total rainfall recorded for June was 38 per cent below the long-term average. Authorities are urging the public to conserve water as reservoir stock levels will likely be affected.
 

WussRedXLi

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https://robertscribbler.wordpress.c...kelvin-wave-to-raise-extreme-el-nino-by-fall/

Third Warm Kelvin Wave to Raise Extreme El Nino by Fall?


More fuel for El Nino’s fire and a record hot 2015 on the way…

Last week, a set of climate models predicted the emergence of a large and moderately strong westerly wind burst running against the trades associated with an eastward propagating cloudy and rainy phase of the Madden-Julian Oscillation (MJO). And, over the past few days a moderate strength, but very wide-ranging, westerly wind pattern appeared.

Today, 20 to 35 mile per hour westerly winds are prevalent along a 2,500 mile stretch of ocean running from just east of the Philippines, across an equatorial zone just north of New Guinea, and on eastward for hundreds more miles in the direction of the Date Line. The winds are associated with numerous low pressure systems developing both north and south of the Equator — their cyclonic wind patterns joining in a daisy chain like feature to drive a large synoptic westerly wind back-burst (WWB).

Over the next few days, winds within the zone are predicted to strengthen to near gale force intensity. But it’s the size of the zone that may have the greatest impact.

Strong, long-fetch westerlies in this region of the world have a tendency to push warm surface waters, now topping off at 31 degrees Celsius (and 1-2 C above the already hotter than normal 1979 to 2000 average), downward and eastward. This heat pump action generates what, in meteorological parlance, are known as warm Kelvin Waves. And warm Kelvin Waves are high energy fuel for strengthening El Ninos.

During mid-March, the Strongest Madden Julian Oscillation on record drove an extreme westerly wind burst (WWB) and produced a very strong Kelvin Wave. This Kelvin Wave ensured the progression to El Nino during 2015, an El Nino event that would have probably reached moderate strength by summer on the force of this single Kelvin Wave’s heating alone. An El Nino ensuring, when combined with the greenhouse gas heat forcing produced by humans, that 2015 would march into the record books as yet one more hottest year in the global climate record.

By early May, a second, albeit somewhat weaker, WWB generated another warm Kelvin Wave, heightening the potential for strong El Nino yet again. This time El Nino model forecasts picked up the doubled Kelvin Wave signal and began to produce some rather extreme predictions for El Nino come Fall. Late spring is an uncertain time for El Nino models due to an ocean tendency to cool down by September. So the impact of strong Kelvin Waves during spring can be somewhat muted. However, as June arrived, the model consensus for a strong El Nino emerging by Fall had solidified, if not along a range quite so extreme as some of the May numbers indicated.

Meanwhile, in the Central Pacific, anomalous warm sea surface temperatures were continuing to build. By mid-May, Central Pacific sea surface temperatures exceeded the moderate El Nino threshold of 1 C above average. By Monday, June 22, NOAA’s weekly El Nino statement had indicated that the Central Pacific region had warmed to a 1.4 degree Celsius positive anomaly. A level just 0.1 C short of strong El Nino intensity.

Adding a third significant Westerly Wind Burst on top of an already warming Equatorial Pacific throws yet one more variable into the dynamic El Nino forecast. A variable that could heighten the already strong potential for a major El Nino event late this Summer through to Fall. And one that could further heighten extreme global record hot temperatures during 2015. For the late June WWB is likely to produce an extraordinary third Warm Kelvin Wave, giving the currently strengthening El Nino yet one more shove toward increasingly extreme conditions.
 
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bakerqbal

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See my 1.38pm reply. The gist is there, things may change a bit here and there.

The probability of having no haze is v low.

I would bet it to be over a prolonged period that's similar to 2014. Intensity - likely to be higher than 2014. How high is higher? Dont know, every season is different.

PSI 401? V Unlikely.

Actually I dunno if I'm crazy or not. During the psi 400 days. I feel a little excited like movie. And heck, the family bonds are closer too coz everyone stay at home and chat on the haze conditions:p
 

WussRedXLi

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Actually I dunno if I'm crazy or not. During the psi 400 days. I feel a little excited like movie. And heck, the family bonds are closer too coz everyone stay at home and chat on the haze conditions:p

If you have enough air filtering capability and masks, then it feels like you special coz it's like having a break from your normal routine. Visibility drops, people talk about haze. And don't forget air conditioning. Something like extreme weather that we don't get often.

If you don't have such luxuries, then it becomes hell on earth.

I think the risk just dramatically rose over the past few days. Maybe still not 400 (need to be very close to SG + intense), but 100 plus to 200 plus for a sustained and prolonged period of a few weeks is not far-fetched. And that's going to be far worse than just 2 days of PSI 200-400.
 

Lucky177

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If you have enough air filtering capability and masks, then it feels like you special coz it's like having a break from your normal routine. Visibility drops, people talk about haze. And don't forget air conditioning. Something like extreme weather that we don't get often.

If you don't have such luxuries, then it becomes hell on earth.

I think the risk just dramatically rose over the past few days. Maybe still not 400 (need to be very close to SG + intense), but 100 plus to 200 plus for a sustained and prolonged period of a few weeks is not far-fetched. And that's going to be far worse than just 2 days of PSI 200-400.
Haiz... hopefully not too bad and not too long...

Sent from Android Mobile using GAGT
 

mikeeeey

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I found that the Sharp plasmacluster, the ones found in the air purifiers with HEPA, emit 1 ppb ozone. The permissible threshold is 50ppb. 50X lower. That is if you choose to turn on the plasmacluster function.

The thing is that even the super basic Sharp A28 HEPA air purifier at sgd99 has plasmacluster built in as feature. Consumers probably have come to expect this as normal, it's not an expensive option anyway.
Those dedicated Plasmacluster generators meant for cars and small spaces generate about 3-7 times more plasmacluster + and - ions compared to the modules found in the Sharp air purifiers.....if you want a figure, the built into APs ones generate 7000 ions per cm3 (measured in the middle of a X sq m room...forgot what X is) and the dedicated ones between 25,000 to 50,000 ions/cm3.

And seriously, every airconditioner out there from LG, Samsung, Mitsubishi, Panasonic, Daikin, Fujitsu, Sanyo out there have some sort of -ve ions generation feature anyway.

Mind sharing where can find a28 for $99?
 

bakerqbal

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How u guys attach pictures? My mum bought an air filter for fan and it seems good. Quite black after 2 months of usage. Took a pic but dunno how to attach it here
 

WussRedXLi

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Can use upload to imgur and then Insert Image here.

Sharp A28 I think not very useful for general usage during haze months. Get the purple 3M Filtrete from Taobao. (Amazon no more already, that usd17 for 30" x 60" size).

Just cleaned my MBR aircon FCU again for max efficiency. Weather really super fugged up.
 

bakerqbal

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Can use upload to imgur and then Insert Image here.

Sharp A28 I think not very useful for general usage during haze months. Get the purple 3M Filtrete from Taobao. (Amazon no more already, that usd17 for 30" x 60" size).

Just cleaned my MBR aircon FCU again for max efficiency. Weather really super fugged up.

Thanks for advice ;)
 

WussRedXLi

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Intense WWBs (Westerly Winds Burst) confirmed as forecasted. (ie forecast is accurate). These WWBs are needed to fuel and ramp up the El Nino further. This latest WWB would make sure the latest Kelvin Wave reaches Peru in mid Aug - late Aug. This shd be very intense.

Pink region. Spreading in size later too.

u.anom.30.5S-5N.png
 
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