nntsuzu/KFTT huggingface dataset:
English: In China, "黄梅雨" (fan-mei-yu) which means "rain in the period in which fruit of Japanese apricot matures and their color changes to yellow" is often used.
Japanese: 中国では、梅が熟して黄色くなる時期の雨、という意味の「黄梅雨」（ファンメイユー）もよく用いられる。
English: When the season changes from spring to summer in East Asia, those air masses with different nature struggle with each other.
Japanese: 春から夏に季節が移り変わる際、東アジアでは性質の違うこれらの気団がせめぎ合う。
English: In the Mainland China area, the Yangzi jiang air mass in the north and the tropical monsoon air mass in the south struggle with each other.
Japanese: 中国大陸方面では北の揚子江気団と南の熱帯モンスーン気団がせめぎあう。
English: In Japanese Islands area, the Okhotsk Sea air mass and the Ogasawara air mass struggle with each other.
Japanese: 日本列島方面では北のオホーツク海気団と南の小笠原気団が、せめぎあう。
English: Between air masses in the north or between air masses in the south, no collision occurs and no front is formed because they have similar nature with each other.
Japanese: 北側の気団同士、南側の気団同士は、性質が似ていることなどから衝突せず、前線は形成されない。
English: In the part where northern and southern air masses collide with each other, a baiu front is formed for several thousands kilometers from east to west and it moves to the north gradually over several months.
Japanese: 北と南の気団が衝突した部分には、東西数千kmに渡って梅雨前線（ばいうぜんせん）ができ、数ヶ月に渡って少しずつ北上していく。
English: It rains continuously in the vicinity of this front and the period for continual rain lasts for one to two months in each district.
Japanese: この前線付近では雨が降り続くが、長雨の期間は各地域で1か月～2か月にもなる。
English: During winter, a wide range from Siberia to China is covered by cold and dry Siberia air mass.
Japanese: 冬の間、シベリアから中国大陸にかけての広範囲を、冷たく乾燥したシベリア気団が覆っている。
English: The Siberia air mass comes down the south often accompanied by cold wave and brings a heavy snow to Japan on the Japan Sea side, but in Tibetan Plateau, high mountains prevent the air mass from further going down to the south.
Japanese: シベリア気団はしばしば南下して寒波をもたらし、日本の日本海側に大雪を降らせるが、チベット高原では高い山脈が邪魔して気団がそれ以上南下できない。
English: Subtropical jet stream flows in the sky of between India and Philippines to the south of Tibetan Plateau.
Japanese: そのチベット高原の南側、インド～フィリピンにかけての上空を、亜熱帯ジェット気流が流れる。
English: If the winter ends and the spring comes closer, Siberia air mass loses its strength and moves up to the north.
Japanese: 冬が終わり春が近づくにつれ、シベリア気団は勢力が弱くなり、次第に北上していく。
English: Instead of it, warm and dry Yangzi jiang air mass begins to be spawned and increases its strength.
Japanese: 代わって中国大陸には暖かく乾燥した揚子江気団ができ始め、勢力を強めていく。
English: If spring comes, the Yangzi jiang air mass releases a migratory anticyclone to Japanese islands and Korean Peninsula in its east.
Japanese: 春になると、揚子江気団は東の日本列島や朝鮮半島などに移動性高気圧を放出する。
English: The migratory anticyclone is carried by the westerlies to the east and causes changeable spring weather together with the low-pressure system generated between high-pressure systems.
Japanese: これが偏西風に乗って東に進み、高気圧の間にできた低気圧とともに春の移り変わりやすい天候を作り出している。
English: If spring comes close to its end, the tropical monsoon air mass in the vicinity of the South China Sea increases its strength and comes up to the north.
Japanese: 春が終わりに差し掛かるにつれて、南シナ海付近にある熱帯モンスーン気団が勢力を増し北上してくる。
English: By looking at surface weather chart, we can find that high-pressure system spawned by the Yangzi jiang air mass and the high-pressure system spawned by the tropical monsoon air mass are struggling with each other on the South China Sea and the front has been formed between them.
Japanese: 地上天気図でみると、揚子江気団からできた高気圧と熱帯モンスーン気団からできた高気圧が南シナ海上でせめぎあい、その間に前線ができていることがわかる。
English: Every year, a belt of cloud that is the forerunner of formation of baiu front (technically, it is sometimes called as "quasi-steady cloud belt") is spawned.
Japanese: 例年、華南や南西諸島南方沖付近で5月上旬に梅雨前線のでき始めとなる雲の帯（専門的には準定常的な雲帯と呼ぶことがある。）が発生する。
English: Around the middle of May, the baiu front appears clearly on the weather chart and becomes stationary in South China and the vicinity of Nansei Islands.
Japanese: 5月中旬ごろになると、梅雨前線ははっきりと天気図上に現れるようになり、華南や南西諸島付近に停滞する。
English: On the other hand, around May in which the early summer begins, the subtropical jet stream moves also to the north and reaches Tibetan Plateau.
Japanese: 一方、初夏に入った5月ごろ、亜熱帯ジェット気流も北上し、チベット高原に差し掛かる。
English: However, as Tibetan Plateau is higher than the subtropical jet stream, the latter is divided by the former into two streams, northern and southern streams.
Japanese: しかし、チベット高原は上空を流れる亜熱帯ジェット気流よりも標高が高いため、亜熱帯ジェット気流はチベット高原を境に北と南の2つの流れに分かれてしまう。
English: From divided subtropical jet streams, the northern split flow joins together with the polar jet stream in the vicinity of Sakhalin.
Japanese: 分かれた亜熱帯ジェット気流のうち、北側の分流は、樺太付近で寒帯ジェット気流と合流する。
English: If the air in the sky becomes stationary because of the impact of this joining of streams, a descending air current is spawned and high-pressure system is created on the Okhotsk Sea below it.
Japanese: この合流の影響で上空の大気が滞ると、下降気流が発生して、その下層のオホーツク海上に高気圧ができる。
English: This high-pressure system is called Okhotsk anticyclone and cold and wet air mass which is the mother of this anticyclone is called Okhotsk air mass.
Japanese: この高気圧をオホーツク海高気圧といい、この高気圧の母体となる冷たく湿った気団をオホーツク海気団という。
English: Around the same time, also on the sea in the middle of Pacific Ocean, an anticyclone increases its strength and enlarges its area to the west.
Japanese: 同じごろ、太平洋中部の洋上でも高気圧が勢力を増し、範囲を西に広げてくる。
English: This high-pressure system is called Pacific anticyclone and warm and wet air mass which is the mother of this anticyclone is called Ogasawara air mass.
Japanese: この高気圧が太平洋高気圧であり、この母体となる暖かく湿った気団を小笠原気団という。
English: Around the end of May or beginning of June, Kyushu and Shikoku regions begin to be influenced by the baiu front.
Japanese: 5月下旬から6月上旬ごろになると、九州や四国が梅雨前線の影響下に入り始める。
English: Around this time, in the eastern part of the baiu front, the Okhotsk air mass and the Ogasawara air mass frequently collide with each other.
Japanese: このころから、梅雨前線の東部ではオホーツク海気団と小笠原気団のせめぎあいの色が濃くなってくる。
English: On the other hand, in North China, Korean Peninsula and eastern part of Japan, weather as in spring, in which high-pressure systems and low-pressure systems come alternately.
Japanese: 一方、華北や朝鮮半島、東日本では、高気圧と低気圧が交互にやってくる春のような天気が続く。
English: In mid-June, baiu front which continues to go up to the north becomes stationary in China in the vicinity of Nanling and extends its force to the area near Honshu (the main island of Japan).
Japanese: 北上を続ける梅雨前線は、6月中旬に入ると、中国では南嶺山脈付近に停滞、日本では本州付近にまで勢力を広げてくる。
English: Then, the baiu front moves up to the north to North China and the north-eastern district and, with the middle and end of August as the border, it begins to move down to the south.
Japanese: 次に梅雨前線は華北・東北部に北上し、8月中旬・下旬を境に再び南下を始める。
English: In any place where two air masses which are different in their natures collide with each other, the state of air becomes unstable and a front is spawned.
Japanese: 性質の違う2つの空気（気団という）がぶつかる所は大気の状態が不安定になり、前線が発生する。
English: Because air masses which compose the baiu front has similar strength with each other, it becomes a stationary front that moves slowly between the south and north.
Japanese: 梅雨前線を構成する気団はいずれも勢力が拮抗しているため、ほぼ同じ地域を南北にゆっくりと移動する停滞前線となる。
English: If two high-pressure systems struggle with each other and the strength of both systems is balanced, the baiu front hardly moves.
Japanese: 2つの高気圧がせめぎあい、勢力のバランスがほぼつり合っているとき、梅雨前線はほとんど動かない。
English: If the balance between two high-pressure systems is lost or a low-pressure system approaches, however, the front may change temporarily to a warm front or a cold front.
Japanese: しかし、2つの高気圧の勢力のバランスが崩れたときや、低気圧が近づいてきたり、前線付近に低気圧が発生したりしたときは、一時的に温暖前線や寒冷前線となることもある。
English: Baiu is deemed to have ended when activities of the baiu front are weakened by expansion of strength of the Pacific anticyclone or the baiu front has been forced to move the north of each area and no rain is expected because of the influence of the front.
Japanese: 梅雨前線の活動が太平洋高気圧の勢力拡大によって弱まるか、各地域の北側に押し上げられ、今後前線の影響による雨が降らない状況になったとき、梅雨が終わったとみなされる。
English: This is partly because the baiu front becomes stationary mainly on Honshu and also because precipitation because of baiu is seldom observed in Hokkaido since the strength of the front is lost in the end phase of baiu and the speed of moving up to the north is high.
Japanese: これは梅雨前線がおもに本州上に停滞することや、梅雨の終わりには前線の勢力が衰え、北上する速度が非常に速くなっていることから、北海道で梅雨によると思われる降水が観測されないことが多いからである。
English: With respect to the Tohoku region, no announcement of tsuyuake is given in certain years and, because of this, the summer in the Tohoku region is in fact shorter than in Hokkaido.
Japanese: 東北地方では年によっては梅雨明けの発表がされないこともあり、これによって東北地方の夏は実は北海道よりも短いといわれている。
English: Therefore, the length of meteorological summer is extremely different between the southern part of Hokkaido (Hakodate and so on) which has comparatively warm climate and Shimokita and Tsugaru regions of Aomori Prefecture which are on the northern end of Honshu.
Japanese: そのため、北海道の中でも比較的温暖な道南（函館など）と、本州の北端に位置する青森県下北・津軽地方とでは、気象学上の夏の長さが極端に異なる。
English: Ogasawara Islands (Bonin Islands) have no baiu because the Pacific anticyclone is dominant since the early summer and the baiu front cannot come close and the region is covered by the real summer air.
Japanese: 小笠原諸島は初夏より太平洋高気圧に支配されて梅雨前線が近付けず、真夏の空気に包まれるため、こちらも梅雨がない。
English: As both of two air masses which compose the southern part of the baiu front are air masses which have an ocean as its base (martitime air mass), they absorb a large amount of moisture from the ocean and contain wet air.
Japanese: 梅雨前線の南側を構成する2つの気団はともに海洋を本拠地とする気団（海洋性気団）のため、海洋から大量の水蒸気を吸収して湿潤な空気を持っている。
English: On the other hand, air masses which compose the north and south of the front consist normally of weak rain cloud of nimbostratus because the difference in temperature between them is small.
Japanese: しかし、前線の南北を構成する気団は、お互いの温度差が小さいため、通常はほとんどが乱層雲の弱い雨雲で構成される。
English: If cold air flows into the sky, or parent cloud for cumulonimbus called cloud cluster advances toward the east from the vicinity of Mainland China, however, a large amount of moisture is condensed to form cloud in the vicinity of the baiu front which cloud becomes strong rain cloud often accompanied by cumulonimbus.
Japanese: しかし、上空に寒気が流入したり、クラウドクラスターと呼ばれる積乱雲の親雲が中国大陸付近から東進してくると、梅雨前線付近で大量の水蒸気が凝結して雲を作り、対流活動が活発化して、しばしば積乱雲を伴った強い雨雲となる。
English: The baiu front is meteorologically a front which brings monsoon (monsoon front).
Japanese: 梅雨前線は、気象学的にはモンスーンをもたらす前線（モンスーン前線）の1つである。
English: Monsoons in the South Asia including India and Southeast Asia are caused by air current of monsoon originated in the Indian Ocean.
Japanese: インドをはじめとした南アジアや東南アジアのモンスーンは、インド洋に端を発するモンスーンの気流が原因である。
English: This air current extends further to the east and influences tropical monsoon air mass on the South China Sea and has relationship.
Japanese: この気流はさらに東にまで伸びて南シナ海の熱帯モンスーン気団にも影響を与えており、関連性がある。
English: If we look at the air in the sky in the vicinity of the baiu front, the polar front which forms a border between the winter air and spring or autumn air and the subtropical front which forms the border between the summer air and the spring or autumn air exist close to each other.
Japanese: また梅雨前線付近の上空の大気を見ると、冬の空気と春・秋の空気の境目となる寒帯前線、春・秋の空気と夏の空気の境目となる亜熱帯前線が接近して存在している。
English: In Japan, the local meteorological observatory in each region and the Japan Meteorological Agency declare tsuyuiri and tsuyuake every year.
Japanese: 日本では、各地の地方気象台・気象庁が毎年梅雨入り・梅雨明けの発表をする。
English: When it is deemed that tsuyuiri or tsuyuake occurs, provisional declaration is given and, after examining around September every year the progression of weather from May to August in a comprehensive manner, the judgment becomes final.
Japanese: 梅雨入り、梅雨明けしたと思われる時期に暫定的な発表を行い、例年9月頃、5月から8月の天候経過を総合的に検討して、最終的なものとしている。
English: On this occasion, the date of tsuyuiri or tsuyuake may be amended or an expression "not identified" may be given.
Japanese: この際、梅雨入り、梅雨明けの期日の修正が行われたり、「特定せず」という表現になることがある。
English: In general, baiu comes earlier in the southern region and, on an average, it is from the middle of May to the end of June in Okinawa and from the end of June to the end of July in the Tohoku region and the Hokuriku region.
Japanese: 一般に、南の地域ほど梅雨の到来は早く、沖縄は5月中旬から6月下旬、東北・北陸では6月下旬から7月下旬頃となるのが平均的である。
English: There is no significant difference in the length of the period of baiu and it is around 40 to 50 days, but the amount of annual precipitation during the period is larger toward west and south.
Japanese: 梅雨の期間はどの地方でも40日から50日前後と大差はないが、期間中の降水量は西や南に行くほど多くなる。
English: If the baiu front stays stationary until risshu (the first day of autumn) comes, no declaration of tsuyuake is made.
Japanese: ただし、梅雨前線が停滞したまま立秋を過ぎると、梅雨明けの発表はされなくなる。
English: However, it is not considered that "One year passed without tsuyuake and another tsuyuake occurs redundantly."
Japanese: しかし、「梅雨明けがないまま一年を越して重畳的にまた梅雨入りとなる」とは考えられていない。
English: Announcement of the end of the period of baiu is called tsuyuake sengen (declaration of tsuyuake), but baiu does not end because of the declaration by the Japan Meteorological Agency.
Japanese: 梅雨期間の終了発表のことを俗に梅雨明け宣言というが、気象庁の発表によって梅雨が明けるわけではない。
English: Usually, tsuyuake occurs in the direction from south to north, but, in certain cases, it does not occur in such order.
Japanese: 基本的に、南から北の方向に梅雨明けになっていくが、必ずしもそのように順番になっていない場合もある。
English: If the front remains in certain region, tsuyuake occurs earlier in the area that is located to the north of such region.
Japanese: 前線が一部地域に残存してしまうような場合には、より北の地方の方が先に梅雨明けになる場合もある。
English: In the past, there were cases in which tsuyuake occurred in the Hokuriku region earlier than in the Chugoku region in which tsuyuiri occurred earlier and tsuyuake in the Kanto region was delayed largely compared to western Japan.
Japanese: 過去に、先に梅雨入りした中国地方より後に梅雨入りした北陸地方が先に梅雨明けしたり、関東地方の梅雨明けが西日本より大幅に遅れたりした例がある。
English: On the other hand, with respect to the period after tsuyuake until the beginning of August, it is said "tsuyuake toka" (literally, ten days after tsuyuake) and the weather is stabilized and sometimes boiling hot days come.
Japanese: 逆に梅雨明け後から8月上旬くらいまでは「梅雨明け十日」と言って天候が安定することが多く、猛暑に見舞われることもある。
English: It is said that the Japan Meteorological Agency began to provide information of tsuyuiri and tsuyuake around 1955 and it was communicated to information mediums as "oshirase" (notice).
Japanese: 気象庁が梅雨入り・梅雨明けの情報提供を始めたのは1955年（昭和30年）頃とされ、「お知らせ」として報道機関に連絡していた。
English: Declaration as weather information was begun in 1986.
Japanese: 気象情報として発表を始めたのは1986年（昭和61年）になってからである。
English: In the Mainlnad China, local meteorological observatory in each city and in Taiwan, Central Weather Bureau announce tsuyuiri and tsuyuake.
Japanese: 中国大陸部では各都市の気象台が、台湾では台湾気象局が梅雨入りと梅雨明けの発表を行っている。
English: According to a research on the average value of the date of tsuyuiri and tsuyuake in each city for 1971 through 2000, tsuyuiri in the downstream basin of the Yangtze River is June 14 and tsuyuake July 10 and, in the basin of the Huaihe River, Tsuyuiri is June 18 and tsuyuake July 11.
Japanese: ある研究では、1971年～2000年の各都市の梅雨入り・梅雨明けの平均値で、長江下流域の梅雨入りは6月14日、梅雨明けは7月10日、淮河流域の梅雨入りは6月18日、梅雨明けは7月11日となっている。
English: As rough indication, in Taiwan and South China, a long rain by the baiu front begins aroung the middle of May and ends around the end of June.
Japanese: 目安として、台湾や華南では、5月中旬ごろに梅雨前線による長雨が始まり6月下旬ごろに終わる。
English: The season of long rain comes to Center China (middle and downstream basin of the Yangtze River) between the middle of June and the beginning of July and to a part of North China between the end of June and the end of July.
Japanese: 6月中旬ごろから7月上旬ごろに華中（長江中下流域）、6月下旬ごろから7月下旬ごろに華北の一部が長雨の時期となる。
English: With respect to the southern part of Korean Peninsula, the period of long rain begins in a part of the Republic of Korea between the end of June and the end of July.
Japanese: 朝鮮半島南部では、6月下旬ごろから7月下旬ごろに韓国の一部が長雨の時期となる。
English: Korea Meteorological Administration announces tsuyuiri and tsuyuake of each region and carries out also forecast of tsuyuiri and tsuyuake in advance.
Japanese: 大韓民国気象庁は、各地域の梅雨入りや梅雨明けの発表を行っており、事前に梅雨入りや梅雨明けの予想も行っている。
English: Around May or June before tsuyuiri, weather that is similar to baiu is seen sometimes and it is called "hashiri tsuyu," "tsuyu no hashiri" or "mukae tsuyu."
Japanese: 梅雨入り前の5月～6月ごろ、梅雨に似た天候が見られることがあり、これを走り梅雨（はしりづゆ）、梅雨の走り（つゆのはしり）、あるいは迎え梅雨（むかえづゆ）と呼ぶ。
English: During the period of tsuyu, in particular in the case of long rain, as the hours of sunlight is short, the up and down of air temperature (difference between the highest and lowest air temperature in a day) is small and it is sometimes felt chilly.
Japanese: 梅雨の時期、特に長雨の場合は、日照時間が短いため、気温の上下（最高気温と最低気温の差、日較差）が小さく、肌寒く感じることがある。
English: Such chill is called "tsuyu samu" or "tsuyubie."
Japanese: この寒さや天候を、梅雨寒（つゆざむ）または梅雨冷（つゆびえ）と呼ぶ。
English: On the other hand, sunny spells during the period of baiu is called "tsuyubare" or "tsuyu no harema," and during such periods, the air temperature gets high and humidity is also high.
Japanese: 一方、梅雨期間中の晴れ間は梅雨晴れ（つゆばれ）または梅雨の晴れ間と呼ばれ、特に気温が高く、湿度も高い。
English: Therefore, on the day of tsuyubare, the discomfort index gets high and it is felt unbearable and it tends to cause heat attack.
Japanese: そのため、梅雨晴れの日は不快指数が高くなり過ごしにくく、熱中症が起こりやすい傾向にある。
English: In the end stage of baiu, the amount of rainfall tends to increase and localized torrential rain occurs sometimes.
Japanese: 梅雨末期には降雨量が多くなることが多く、時として集中豪雨になることがある。
English: This tendency is stronger in the south and west, and especially in Kyushu, at the rate of once in ten-odd years, the amount of rainfall equal to that for a year rains in a week.
Japanese: 南及び西ほどこの傾向が強く、特に九州では、十数年に1回程度の割合で、この時期に一年分の降水量がわずか一週間で降ることもある。
English: To the contrary, in eastern Japan such as Kanto and Tohoku regions, the amount of rainfall is bigger in the period of akisame (autumnal rain) that in the period of baiu.
Japanese: 逆に関東や東北など東日本では梅雨の時期よりもむしろ秋雨の時期のほうが雨量が多い。
English: Rain in the last stage of baiu is called "arazuyu" or "abarezuyu."
Japanese: 梅雨末期の雨を荒梅雨（あらづゆ）あるいは暴れ梅雨（あばれづゆ）とも呼ぶ。
English: In addition in the last stage of baiu, it often rains accompanies by thunder and it is called "okurizuyu."
Japanese: また、梅雨の末期には雷を伴った雨が降ることが多く、これを送り梅雨（おくりづゆ）と呼ぶ。
English: Sometimes even after tsuyuake, it continues to rain or, after becoming sunny once, it rains again.
Japanese: また、梅雨明けした後も、雨が続いたり、いったん晴れた後また雨が降ったりすることがある。
English: It is called "kaerizuyu" (it is written as '返り梅雨' instead of '帰り梅雨') or "modorizuyu."
Japanese: これを帰り梅雨（かえりづゆ、返り梅雨とも書く）または戻り梅雨（もどりづゆ）と呼ぶ。
English: In the year in which tsuyuake is delayed, there is a tendency a cold summer occurs and tends to cause cold weather damage.
Japanese: なお、梅雨明けが遅れた年は冷夏となる場合も多く、冷害が発生しやすい傾向にある。
English: If karatsuyu occurs, in many cases, water to be used in the summer cannot be secured resulting in drought.
Japanese: 空梅雨の場合、夏季に使用する水が確保できなくなり、渇水を引き起こすことが多い。
English: In the northern Kyushu and Setouchi regions in which the amount of rainfall in autumn and winter is small, if there is no considerable amount of rainfall by typhoon and so on after karatsuyu, such drought continues for more than a year sometimes.
Japanese: 秋・冬の降水量が少ない北部九州や瀬戸内地方などでは、空梅雨の後、台風などによるまとまった雨がない場合、渇水が1年以上続くこともある。
English: Baiu in which not so strong rainfall continues for a long period of time is expressed as negative baiu and is baiu in which, if it rains, a large amount of rainfall occurs in a short time and, if not rains, sunny weather comes is expressed as positive baiu.
Japanese: あまり強くない雨が長く続くような梅雨を陰性の梅雨、雨が降るときは短期間に大量に降り、降らないときはすっきりと晴れるような梅雨を陽性の梅雨と表現することもある。
English: Negative baiu is called also "onnazuyu" (literally, 'female baiu'), and positive baiu "otokozuyu" (literally, 'male baiu'), but they are seldom used in recent year as such expressions are deemed as discrimination by sex.
Japanese: 陰性の梅雨を女梅雨（おんなづゆ）、陽性の梅雨を男梅雨（おとこづゆ）とも呼ぶが、性差別的な表現であるとされ、近年ではあまり使われない。
English: As a general tendency, in the case of negative baiu, strength of Okhotsk anticyclon tends to be large and, in the case of positive baiu, strength of Pacific anticyclone tends to be large; however, this is not necessarily appropriate as it also depends on the conditions such as passage of the westerlies, and Arctic oscillation or southern oscillation (ENSO, El Nino/La Nina).
Japanese: 傾向として、陰性の場合は、オホーツク海高気圧の勢力が強いことが多く、陽性の場合は、太平洋高気圧の勢力が強いことが多いが、偏西風の流路や、北極振動・南方振動（ENSO、エルニーニョ・ラニーニャ）なども関係しているため、一概には言えない。
English: Typhoon and tropical cyclone suck up air from the environment in the space near ground surface on one hand, and on the other hand, in the upper troposphere several thousands to ten thousands meters high, makes sucked air wet and discharges it in large amount into the environment.
Japanese: 台風や熱帯低気圧は、地上付近では周囲から空気を吸い上げる一方、上空数千m～1万mの対流圏上層では、吸い上げた空気を湿らせて周囲に大量に放出している。
English: Therefore, if typhoon or tropical cyclone comes close to or lands in the vicinity of bail front, the baiu front which has been supplied with plenty of moisture vapor becomes active resulting in torrential rain.
Japanese: そのため、梅雨前線の近くに台風や熱帯低気圧が接近または上陸すると、水蒸気をどんどん供給された梅雨前線が活発化して豪雨となる。
English: In certain cases, the baiu front comes up to north together with a typhoon or tropical cyclone which has lost its strength and the baiu ends all of a sudden.
Japanese: また、梅雨前線が、勢力が弱まった台風や温帯低気圧とともに北上して一気に梅雨が明けることがある。
English: It is said that, if you look into cases of heavy rain and torrential rain during the period of baiu, there are certain patterns.
Japanese: 梅雨の時期の大雨や豪雨の事例を見ていくと、気圧配置や気象状況にある程度のパターンがあるといわれている。
English: The pattern in which low-pressure system advances to the east in the vicinity of the baiu front which is stationary in the south Japan Sea tends to cause torrential rain on the Japan Sea side.
Japanese: 日本海側で豪雨になりやすいのが、日本海南部に停滞する梅雨前線付近を低気圧が東に進むパターンである。
English: Wet air flows into the low-pressure system from southwest and clashes to mountains and causes torrential rain locally.
Japanese: 低気圧に向かって南西から湿った空気が流れ込み、その空気が山脈にぶつかって局地的な豪雨となりやすい。
English: The pattern in which baiu front stays stationary for a long time period or baiu front is stationary in the vicinity of Pacific side and low-pressure system is stationary on the west side tends to cause torrential rain on the Pacific Ocean side.
Japanese: 太平洋側で豪雨になりやすいのが、梅雨前線が長期的に停滞するパターンや、太平洋側付近に梅雨前線、西側に低気圧がそれぞれ停滞するパターンである。
English: Wet air flows in from south or southeast and clashes to mountains and causes torrential rain locally.
Japanese: 南～南東から湿った空気が流れ込み、同じようにその空気が山脈にぶつかって局地的な豪雨となりやすい。
English: Also, sometimes, torrential rain is caused by a pattern in which unique moisture vapor called moist tongue flows in under above-mentioned conditions or by developed cumulonimbus such as tapering cloud becomes stationary or flows into the same region one after another.
Japanese: また、前述のような条件下で湿舌と呼ばれる特異な水蒸気の流れ込みパターンとなったり、テーパリングクラウドのような発達した積乱雲が、停滞したり同じ地域に次々と流れ込んだりして、豪雨をもたらすことがある。
English: From a statistical point of view, if El Nino in which the temperature of sea water increases in the middle and east Pacific Ocean and decreases in the west Pacific Ocean in the vicinity of the equator occurs, there is a tendency tsuyuiri and tsuyuake in Japan delay and the amount of rainfall stays as usual and the hours of sunlight increases.
Japanese: 統計的に見て、赤道付近の太平洋中部～東部にかけて海水温が上昇・西部で低下するエルニーニョ現象が発生したときは、日本各地で梅雨入り・梅雨明け共に遅くなる傾向にあり、降水量は平年並み、日照時間は多めとなる傾向にある。
English: If La Nina in which the temperature of sea water decreases in the middle and east Pacific Ocean and increases in the west Pacific Ocean in the vicinity of the equator occurs, there is a tendency tsuyuiri and tsuyuake in certain part of Japan come earlier than usual except Okinawa where tsuyuiri is delayed and the amount of rainfall increases excluding certain part and the hours of sunlight decreases.
Japanese: また、同じく中部～東部で海水温が低下・西部で上昇するラニーニャ現象が発生したときは、沖縄で梅雨入りが遅めになるのを除き、日本の一部で梅雨入り・梅雨明けともに早くなる傾向にあり、降水量は一部を除き多め、日照時間はやや少なめとなる傾向にある。
English: Continual rainfall mainly from the end of March to the beginning of April is called "Natanetsuyu."
Japanese: 主に3月下旬から4月上旬にかけての、連続した降雨を「菜種梅雨」（なたねつゆ）と言う。
English: It is rare that rainfall continues for several days or localized torrential rain is observed as in baiu, but there are many cloudy or rainy days and vague weather continues sometimes for many days.
Japanese: 梅雨のように何日も降り続いたり、集中豪雨を見ることは少ないが、やはり曇りや雨の日が多く、すっきりしない天気が何日も続くことが多い。