Enhanced radiosonde sounding data have been used for assimilation

While radiosonde observation onboard the Mirai has been started since August 5, enhanced radiosonde soundings (from 12-hourly to 6-hourly) at Palau and Yap have also been started since August 6. In addition, it is expected to have another enhancement at PAGASA Legaspi site, Philippines soon.
Thank you, Palau Weather Service, Yap Weather Service, US/NOAA, and PAGASA for your great help and contributions!
According to the ECMWF report of geographical coverage of observations used for their data assimilation system, those enhanced sounding data have been successfully used by them! We can confirm three red dots in the tropical western Pacific, which were not appeared on the chart as of August 4.

Acknowledgment. Those figures are taken from ECMWF website at https://www.ecmwf.int/en/forecasts/charts/monitoring/dcover

Loading in the rain

During the R/V Mirai was at-berth at Shimizu Port from July 20 through 31, various observation tools were loaded and equipped. In particular, heavy instruments were loaded on July 30 using a crane truck.

This time, due to COVID-19 pandemic, on-board participants took PCR test prior to the cruise and all were proved as “negative.”  Now everything has been set for the start.

The R/V Mirai MR20-E01 cruise is scheduled to depart on the morning of August 1, 2020.  (KY)

   

Finish of the intensive observation in Laoag

The intensive observation in Laoag, Republic of the Philippines, as a part of YMC-BSM 2018 was successfully finished today. I appreciate all the staffs of PAGASA who participated in this project.

In addition to the 6-hourly radiosonde observation that started on July 1, a mobile X-band weather radar was in operation during the whole month of August, observing lots of convective signals around the city. Actually, monthly rainfall at the Laoag weather station in August is more than 1,000 mm, which is about three times as high as monthly climatology, according to the chief meteorological officer of the station. I look forward to analyzing the observed data to examine intraseasonal variability in rainfall and wind field, as well as diurnal cycle.

At Laoag, JAMSTEC has conducted surface meteorological observation with an AWS system for more than 10 years, which was of course a component of the intensive observation project. Although the project was finished, we continue the surface meteorological observation.

SY

AWS

YMC-BSM in Vietnam is finished

We successfully finished the YMC-BSM observation in Ha Noi and Ho Chi Minh, Vietnam. The obtained data will be utilized in the study on the water and ozone transportation due to the Asian summer monsoon. I thank all the staff of the Vietnam Meteorological and Hydrological Administration for their great effort in getting the valuable data. (SYO)

Note

This is a small note telling some photos taken during the campaigns at Laoag, Philippines, and at Kototabang or Bukittingi, Indonesia have been uploaded in “Photo Gallery” page. Please enjoy.

 

 

 

PAGASA Laoag Synop Airport Upper Air Station

Wednesday, August 1, 2018

Today I left Laoag earlier than my colleagues a little bit.
I enjoyed much my stay there. Of course, in terms of observation we could do what we planned. But frankly speaking, I have another reason for my excitement.
Laoag is a special place for me personally, as I feel like a kind of nostalgia from its name. In Japan, Japan Meteorological Agency broadcasts weather reports for southeast Asia through radio once a day at 16:00 (it used to be three times per day; 09:10, 16:00, and 22:00), so that anyone can draw a weather chart on a blank weather map. A report from Laoag is sometimes sent out only when the report from Basco is not available. When I was a high school student, I drew weather chart for over two years every day. Indeed, I missed to draw only 3 days or so. Anyway, when I could hear the name of Laoag, I thought something happened, and Laoag staff must be happy as their data were reported. Of course, I knew nothing about Laoag itself.
This time, we are conducting our observations at Laoag, and this synop station is our base. Can you imagine how I felt? If yes, you must be a boy who draws your own weather chart.

Dear Mam Cynthia, Chief Meteorological Officer, and her able staff, we deeply appreciate your help for our observations as well as generous hospitality shown to us.
Observations will continue. Please take care of yourself as much as possible and have good days.   (ky)

Day after day

Tuesday, July 31, 2018

We have kept routine work with daytime intercomaprison in addition to 6-hourly soundings. According to the report by PAGASA radar engineer, their mobile radar was set well and could monitor rain area over the SCS. Radar continuous observation will start from tomorrow for one month. NICAM forecast also says we may have a chance of heavy rain in the coming days over the coast or ocean. Thus, we have no heavy cloud and no rain over our site. That is why we continue the intercomparison work day after day. (ky)

Radar has come

Monday, July 30, 2018

 

PAGASA’s mobile X-band multi-parameter radar equipped on a car has arrived at PAGASA Laoag station this morning. Then, they moved to the top of smal hill, where Paoay lake is located on the foot. Its operation will be conducted from August 1 through one month. Currently, PAGASA’s staff are setting up and will conduct calibration tomorrow. (ky)

 

UP has come

Saturday, July 28, 2018

 

The University of the Philippines Prof. Cabrera and her 7 students have visited the PAGASA Laoag Station after a long overnight drive from Quezon. While they learn about observation, some students may pursue to develop correction scheme of radiosonde data for a master thesis. After they listened to a lecture telling overview of the campaign as well as intercomparison experiment, they joined to make a rigging frame for simultaneous launch of three radiosondes. PAGASA Laoag station has been occupied with their young and cheerful energy.  (ky)