理學院
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學院概況
理學院設有數學系、物理學系、化學系、生命科學系、地球科學系、資訊工程學系6個系（均含學士、碩士及博士課程），及科學教育研究所、環境教育研究所、光電科技研究所及海洋環境科技就所4個獨立研究所，另設有生物多樣性國際研究生博士學位學程。全學院專任教師約180人，陣容十分堅強，無論師資、學術長現、社會貢獻與影響力均居全國之首。
特色理學院位在國立臺灣師範大學分部校區內，座落於臺北市公館，佔地約10公頃，是個小而美的校園，內含國際會議廳、圖書館、實驗室、天文臺等完善設施。
理學院創院已逾六十年，在此堅固基礎上，理學院不僅在基礎科學上有豐碩的表現，更在臺灣許多研究中獨占鰲頭，曾孕育出五位中研院院士。近年來，更致力於跨領域研究，並在應用科技上加強與業界合作，院內教師每年均取得多項專利，所開發之商品廣泛應用於醫、藥、化妝品、食品加工業、農業、環保、資訊、教育產業及日常生活中。
在科學教育研究上，臺灣師大理學院之排名更高居世界第一，此外更有獨步全臺的科學教育中心，該中心就中學科學課程、科學教與學等方面從事研究與推廣服務；是全國人力最充足，設備最完善，具有良好服務品質的中心。
在理學院紮實、多元的研究基礎下，學生可依其性向、興趣做出寬廣之選擇，無論對其未來進入學術研究領域、教育界或工業界工作，均是絕佳選擇。
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Item 利用數值試驗探討黑潮入侵南海的機制(2011) 許珮慈黑潮是北太平洋的西方邊界流，屬於北赤道洋流碰到西邊界陸地後向北的分支，途中經過菲律賓東岸、呂宋海峽後，再沿著東台灣通道繼續往東北流。在流經呂宋海峽時，有時會發生入侵至南海的情形。透過分析AVISO衛星資料發現，黑潮在呂宋海峽的入侵現象，存在著季節變化，當冬季東北季風強盛時，黑潮較常被發現到會入侵至南海內部，而西南季風盛行的夏季期間，並未發現有入侵的情況。 本研究透過模式試驗，發現黑潮入侵南海的現象與臺灣西南邊的風應力旋度有關。冬季時，臺灣西南邊負的風應力旋度轉為強烈，黑潮會明顯偏向西側，進而入侵至南海。反之，夏季時，臺灣西南邊的風應力旋度微弱甚至消散，黑潮則會沿著呂宋海峽東側一路向北前進，並未入侵至南海。 進一步將臺灣西南邊（119.5。E~121。E、21。N~22。N）的風應力旋度，與黑潮入侵至南海所流經區域（120。E~122。E、21。N~20.5。N）之動能計算其相關性，得到的相關係數達0.67，呈現顯著正相關，再次證實，臺灣西南邊的風應力旋度與黑潮入侵南海存在著密不可分的關係。Item 臺灣東部外海氣旋渦引起黑潮截斷之研究(2019) 劉宗銘; Liu, Tsung-Ming本研究探討氣旋渦西移至臺灣東部外海，撞擊黑潮後，對黑潮造成的影響。研究結果顯示，在研究期間 (1993年1月至2016年4月)，衛星高度計資料指出，氣旋渦西移至臺灣東部外海 (123°E) 共發生18次，並且其中8次發生後有伴隨黑潮入侵呂宋海峽事件。氣旋渦西移路徑大致可以分3種：(1) 從呂宋島東側往西北移動(18°N~20°N) (2)從呂宋海峽東側向西移(20°N~22°N) (3)從臺灣東部外海西移(22°N~23°N)。本研究針對第三種氣旋渦移動路徑：從臺灣東部外海西移的氣旋渦事件進一步分析，發現當氣旋渦西移至123°E時，臺灣東部外海的黑潮受到氣旋渦影響，導致黑潮向北的流速減弱，隨後在黑潮上游處發生黑潮入侵呂宋海峽事件，並在臺灣西南產生順時針渦流。另一部份黑潮則向東沿著氣旋渦以逆時針方向向北流動，與Kuo& Chern (2011)有相同的結果。氣旋渦由黑潮東邊向西傳遞時，向西移動到經度123°E氣旋渦強度就會開始減弱，可能是受到黑潮北向流的影響而減弱並往北移，與Liang et al. (2003)所定義的黑潮東邊邊界123°E相符合。進一步用ROMS模式（Regional Ocean Modeling System）模擬，也同樣發現氣旋渦西移到臺灣東岸撞擊黑潮後，臺灣東岸的黑潮流速減弱，且發現黑潮上游有入侵呂宋海峽的現象，在臺灣西南也發現一順時針渦流產生。由ROMS模式結果輸出的地轉流場，計算呂宋海峽區域內的渦度情形，發現當氣旋渦碰撞黑潮時，渦度值從低值有顯著增加的現象發生，為黑潮入侵呂宋海峽所造成。進一步藉由渦度變化來解釋黑潮入侵呂宋海峽現象，當氣旋渦西移撞擊黑潮，導致臺灣東岸的黑潮向北流速減弱，進而造成呂宋海峽東側的黑潮流速減弱，使得呂宋海峽區域的渦度產生改變(正渦變小)，為了維持區域內渦度守恆，因此黑潮向西轉而入侵呂宋海峽(正渦增加)。Item 黑潮入侵呂宋海峽對區域大氣的影響(2017) 翁敏娟; Weng, Min-Chuan黑潮是北太平洋的西方邊界流，其流經呂宋海峽的區段有時會以套流(loop current) 的型態向西入侵北南海。過往研究已證實台灣東北黑潮海表面溫度變異可對區域大氣帶來影響，本研究欲藉由衛星觀測資料及數值模式探討呂宋海峽黑潮套流入侵南海的事件是否對區域大氣造成影響。研究結果顯示東風期間（11－4月），臺灣西南外海因黑潮入侵所帶來海表增溫會伴隨近海表風速及降雨有增加的現象。近一步利用大氣數值模式WRF（Weather Research and Forecast model）以理想實驗對照有無黑潮套流入侵南海的情況下區域性大氣的差異，結果顯示黑潮入侵所伴隨的較高海表溫會增強低層大氣的垂直運動，並使垂直風切減弱，增加垂直混合效應，因而使近海表風速與降雨率增強。Item An updated examination of the Luzon Strait transport.(American Geophysical Union (AGU), 2012-03-01) Hsin, Y.-C.; C.-R. Wu; S.-Y. ChaoDespite numerous previous estimates of Luzon Strait transport (LST), we attempt an update using a fine-resolution model. With these improvements, the circulation in and around Luzon Strait shows up rather realistically. Intrusion of a Kuroshio meander into the South China Sea (SCS) is seasonally varying. The LST, especially in the upper ocean, caused by a small difference between the large meander inflow and outflow, is also seasonally varying and subject to large standard deviation. The annual mean LST is estimated to be westward (−4.0 ± 5.1 Sv) along 120.75°E. We have also conducted process of elimination experiments to assess the relative importance of open ocean inflow/outflow, wind stress, and surface heat flux in regulating LST and its seasonality. The East Asian monsoon winds stand out as the predominant forcing. Without it, the upper ocean LST changes from westward to eastward (ranging up to 4 Sv) and, with misaligned seasonality, triggering an inflow from the Mindoro Strait to the SCS to replenish the water mass loss. Discounting monsoon winds, sea level in the Sulu Sea is generally higher because it receives the Indonesian Throughflow before the SCS, which causes an inflow from the Sulu Sea to the SCS. On the other hand, the annual mean wind from the northeast invites outflow from the SCS to the Sulu Sea (or inflow from the Luzon Strait). Weighing the two competing factors together, we see the cessation of northeast monsoon as a condition favorable for the Luzon Strait outflow or the Mindoro Strait inflow.Item Blocking and westward passage of eddies in the Luzon Strait.(ELSEVIER, 2010-10-01) Sheu, W.-J.; C.-R. Wu; L.-Y. OeySatellite observations have shown the abundance of generally westward-propagating eddies in the subtropical regions in the North Pacific Ocean, especially north of 10衹. Eddies transport mass, and can significantly impact the circulation as well as the heat, salt and nutrient balances of the western Pacific marginal seas. This paper uses a numerical model to examine the conditions when eddies can or cannot freely propagate westward through the Luzon Strait into the South China Sea (SCS). Composite analyses on the 10-year model data show that the fates of eddies depend on the strength and path of the Kuroshio. In one path that exists mostly during fall and winter, the Kuroshio loops westward into the SCS, the potential vorticity (PV) across the current is weak, and eddies are likely to propagate freely through the Luzon Strait. In another path, which exists mostly during spring and summer, the Kuroshio tends to leap directly northward bypassing the SCS, the PV across it strengthens, and eddies are then blocked and are constrained to also follow the northward path. Nonlinear eddy-current interaction and the existence of a cyclone north of the Luzon Island during the looping phase explain why eddies of both signs can pass through the strait. It is shown also that the upstream state of the Kuroshio in the western tropical Pacific plays an important role in dictating the different paths of the Kuroshio. The looping (leaping) path is caused by a weakened (stronger) Kuroshio transport related to the northward (southward) shift of the North Equatorial Current in wintertime (summertime).Item Mesoscale eddies in the northern South China Sea(ELSEVIER, 2007-07-01) Wu, C.-R.; T.-L. ChiangA fine-grid resolution model with realistic bathymetry and forcing has been developed to study the characteristics of the mesoscale eddies for the northern South China Sea (SCS). The SCS model derives its open-boundary conditions from a larger-scale model, which minimizes errors related to the uncertainty of the Kuroshio intrusion at the open boundaries. The model results are consistent with previous observations. Model sea-surface height anomaly demonstrates that the hydrography and circulation in the northern SCS are modulated by westward-propagating mesoscale eddies originating in the vicinity of the Luzon Strait. This explains the observed intra-seasonal fluctuations at the SouthEast Asian Time-series Study (SEATS) station. The mesoscale eddies have the same propagation speed as baroclinic Rossby waves (∼0.1 ms−1). The periods of eddy shedding estimated from Strouhal number are around 40–50 days in December and 80–120 days in August, respectively. The seasonal variability of the Kuroshio intrusion results in more eddies in winter than in summer.